U.S. patent application number 12/445218 was filed with the patent office on 2010-02-11 for composite concrete column and construction method using the same.
Invention is credited to Won-Kee Hong, Jum-Han Kim, Ho-Chan Lee.
Application Number | 20100031605 12/445218 |
Document ID | / |
Family ID | 39218979 |
Filed Date | 2010-02-11 |
United States Patent
Application |
20100031605 |
Kind Code |
A1 |
Hong; Won-Kee ; et
al. |
February 11, 2010 |
COMPOSITE CONCRETE COLUMN AND CONSTRUCTION METHOD USING THE
SAME
Abstract
A composite concrete column comprising: upper and lower concrete
column portions extending in the lengthwise direction and having an
exposed portion between the upper and lower concrete column
portions; an H-beam connected between the upper and lower concrete
column portions to be exposed at the exposed portion; and a
plurality of reinforcement bars embedded in the upper and lower
concrete column portions around the H-beam to extend in the
lengthwise direction.
Inventors: |
Hong; Won-Kee; (Yongin-si,
KR) ; Lee; Ho-Chan; (Anyang-si, KR) ; Kim;
Jum-Han; (Gunpo-si, KR) |
Correspondence
Address: |
STEIN MCEWEN, LLP
1400 EYE STREET, NW, SUITE 300
WASHINGTON
DC
20005
US
|
Family ID: |
39218979 |
Appl. No.: |
12/445218 |
Filed: |
April 25, 2008 |
PCT Filed: |
April 25, 2008 |
PCT NO: |
PCT/KR2008/002381 |
371 Date: |
April 10, 2009 |
Current U.S.
Class: |
52/839 ;
52/745.2 |
Current CPC
Class: |
E04C 3/34 20130101; E04C
3/293 20130101; E04B 5/43 20130101; E04B 1/30 20130101 |
Class at
Publication: |
52/839 ;
52/745.2 |
International
Class: |
E04C 3/293 20060101
E04C003/293; E04B 1/18 20060101 E04B001/18 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 26, 2007 |
KR |
1020070040724 |
Claims
1. A composite concrete column comprising: upper and lower concrete
column portions extending in the lengthwise direction and having an
exposed portion between the upper and lower concrete column
portions; an H-beam connected between the upper and lower concrete
column portions to be exposed at the exposed portion; and a
plurality of reinforcement bars embedded in the upper and lower
concrete column portions around the H-beam to extend in the
lengthwise direction.
2. A composite concrete column comprising: an H-beam having a pair
of flanges in parallel and a web connecting the pair of flanges
each other; a pair of upper and lower concrete column portions
formed on the side surfaces of the H-beam having an exposed portion
between the upper and lower concrete column portions to face each
other; and a plurality of reinforcement bars embedded in the upper
and lower concrete column portions around the H-beam to extend in
the lengthwise direction.
3. The composite concrete column according to claim 1, wherein a
plurality of brackets is formed on the side surface of the H-beam
at the exposed portion.
4. The composite concrete column according to claim 3, wherein a
support portion is laterally extended from the upper surface of the
concrete column portion.
5. The composite concrete column according to claim 1, wherein both
ends of the H-beam are embedded in the concrete column
portions.
6. The composite concrete column according to claim 5, wherein a
plurality of studs is provided on the side surface of the H-beam at
the portion embedded in the concrete column portions.
7. The composite concrete column according to claim 1, further
comprising embedded plates embedded in the lower end of the upper
concrete column portion and the upper end of the lower concrete
column portion with its one sides exposed, and wherein both ends of
the H-beam are connected to the one sides of the embedded
plates.
8. The composite concrete column according to claim 1, wherein the
H-beam is embedded in the concrete column portions through the
whole length of the concrete column portions.
9. The composite concrete column according to claim 1, wherein a
cavity is formed in the concrete column portions.
10. A construction method comprising the following steps of:
installing composite concrete columns including upper and lower
concrete column portions extending in the lengthwise direction with
having an exposed portion between the upper and lower concrete
column portions, an H-beam connected between the upper and lower
concrete column portions to be exposed at the exposed portion, and
a plurality of reinforcement bars embedded in the upper and lower
concrete column portions around the H-beam to extend in the
lengthwise direction; connecting ends of crossbeams to the H-beam
at the exposed portion of the composite concrete columns;
installing molds on the composite concrete columns and the
crossbeams; and putting concrete on the molds and curing the
same.
11. A construction method comprising the following steps of:
installing composite concrete columns including an H-beam having a
pair of flanges in parallel and a web connecting the pair of
flanges each other, a pair of upper and lower concrete column
portions formed on the side surfaces of the H-beam having an
exposed portion between the upper and lower concrete column
portions to face each other, and a plurality of reinforcement bars
embedded in the upper and lower concrete column portions around the
H-beam to extend in the lengthwise direction; connecting ends of
crossbeams to the H-beam at the exposed portion of the composite
concrete columns; installing molds on the composite concrete
columns and the crossbeams; and putting concrete on the molds and
curing the same.
12. The construction method according to claim 10, wherein a
plurality of brackets is formed on the side surface of the H-beam
at the exposed portion, and wherein the ends of the crossbeams are
connected with the brackets.
13. The construction method according to claim 12, wherein a
support portion is laterally extended from the upper surface of the
concrete column portion, and wherein the ends of crossbeams rest on
the support portion.
14. The construction method according to claim 13, wherein the
crossbeam is a composite concrete crossbeam comprising: an H-beam;
stirrup bars installed at a predetermined interval along the
H-beam; and concrete member embedding at least a portion of the
H-beam, and wherein a front end of the concrete member of the
composite concrete crossbeam rest on the support portion.
15. The construction method according to claim 14, wherein a
crossbeam installed on the outer portion of a wall comprises a
support provided on the edge of the upper surface of the concrete
member, and wherein an outer slab mold having a section of L-shape
is installed on the support.
16. The construction method according to claim 14, wherein a
crossbeam installed on the outer portion of a wall comprises a
support provided on the edge of the upper surface of the concrete
member, and a reinforcement angle bar connected between the upper
surface and the side surface of the support, and wherein an outer
slab mold having a section of L-shape is installed on the
support.
17. The construction method according to claim 10, wherein both
ends of the H-beam are embedded in the concrete column
portions.
18. The construction method according to claim 17, wherein a
plurality of studs is provided on the side surface of the H-beam at
the portion embedded in the concrete column portions.
19. The construction method according to claim 10, embedded plates
embedded in the lower end of the upper concrete column portion and
the upper end of the lower concrete column portion with its one
sides exposed are provided, and wherein both ends of the H-beam are
connected to the one sides of the embedded plates.
20. The construction method according to claim 10, wherein the
H-beam is embedded in the concrete column portions through the
whole length of the concrete column portions.
21. The construction method according to claim 20, wherein a cavity
is formed in the concrete column portions.
22. The construction method according to claim 10, wherein the
crossbeams connected with the composite concrete columns are
fastened each other by a traverse reinforcement member.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of PCT International
Patent Application No. PCT/KR2008/002381, filed Apr. 25, 2008, and
Korean Patent Application No. 2007-40724, filed Apr. 26, 2007, in
the Korean Intellectual Property Office, the disclosures of which
are incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a composite concrete column
and a construction method using the same, more particularly to a
composite concrete column and a construction method using the same
by which installation and construction is convenient and stability
and reliability is improved while shortening the period of
construction.
[0004] 2. Description of the Related Art
[0005] A building structure so called `a Rahmen structure` consists
of a crossbeam, a column and a slab. In constructing such a
building structure, a slab is formed on the column and crossbeam,
and cast in concrete. Since the procedure of installing the columns
and the beams and concreting is conducted in place, it takes time
and labor.
[0006] A PC (pre-cast concrete) is widely used to decrease the
period of construction and labor, in which a structure of
reinforcing bars and concrete is constructed in the factory and
transferred to be installed in the construction place. Accordingly
the PC structure has an advantage of shortening the period of
construction. However, the PC structure is so heavy and bulky to
handle in the construction place.
SUMMARY OF THE INVENTION
[0007] The present invention is designed to solve the above
problems of the prior art. It is an object of the invention to
provide a composite concrete column having advantages of shortening
the period of construction and reducing the size and weight of a
structure while providing enhanced resistance to earthquake in the
case of tall buildings compared to the conventional PC
structure.
[0008] A composite concrete column of the present invention may be
installed conveniently and quickly, and it is preferable to be used
together with a composite concrete crossbeam invented by the
inventor.
[0009] Another object of the present invention is to provide a
construction method using the composite concrete column.
[0010] In order to accomplish the above object, the present
invention provides a composite concrete column comprising: upper
and lower concrete column portions extending in the lengthwise
direction and having an exposed portion between the upper and lower
concrete column portions; an H-beam connected between the upper and
lower concrete column portions to be exposed at the exposed
portion; and a plurality of reinforcement bars embedded in the
upper and lower concrete column portions around the H-beam to
extend in the lengthwise direction.
[0011] According to another aspect of the present invention, there
is provided a composite concrete column comprising: an H-beam
having a pair of flanges in parallel and a web connecting the pair
of flanges each other; a pair of upper and lower concrete column
portions formed on the side surfaces of the H-beam having an
exposed portion between the upper and lower concrete column
portions to face each other; and a plurality of reinforcement bars
embedded in the upper and lower concrete column portions around the
H-beam to extend in the lengthwise direction.
[0012] Preferably, a plurality of brackets is formed on the side
surface of the H-beam at the exposed portion.
[0013] More preferably, a support portion is laterally extended
from the upper surface of the concrete column portion.
[0014] Preferably, both ends of the H-beam are embedded in the
concrete column portions.
[0015] More preferably, a plurality of studs is provided on the
side surface of the H-beam at the portion embedded in the concrete
column portions.
[0016] According to another embodiment, the present invention
further comprises embedded plates embedded in the lower end of the
upper concrete column portion and the upper end of the lower
concrete column portion with its one sides exposed, and wherein
both ends of the H-beam are connected to the one sides of the
embedded plates.
[0017] According to another still embodiment, the H-beam is
embedded in the concrete column portions through the whole length
of the concrete column portions.
[0018] Preferably, a cavity is formed in the concrete column
portions.
[0019] According to another aspect of the present invention, there
is provided a construction method comprising the following steps
of: installing composite concrete columns including upper and lower
concrete column portions extending in the lengthwise direction with
having an exposed portion between the upper and lower concrete
column portions, an H-beam connected between the upper and lower
concrete column portions to be exposed at the exposed portion, and
a plurality of reinforcement bars embedded in the upper and lower
concrete column portions around the H-beam to extend in the
lengthwise direction; connecting ends of crossbeams to the H-beam
at the exposed portion of the composite concrete columns;
installing molds on the composite concrete columns and the
crossbeams; and putting concrete on the molds and curing the
same.
[0020] According to another aspect of the present invention, there
is provided a construction method comprising the following steps
of: installing composite concrete columns including an H-beam
having a pair of flanges in parallel and a web connecting the pair
of flanges each other, a pair of upper and lower concrete column
portions formed on the side surfaces of the H-beam having an
exposed portion between the upper and lower concrete column
portions to face each other, and a plurality of reinforcement bars
embedded in the upper and lower concrete column portions around the
H-beam to extend in the lengthwise direction; connecting ends of
crossbeams to the H-beam at the exposed portion of the composite
concrete columns; installing molds on the composite concrete
columns and the crossbeams; and putting concrete on the molds and
curing the same.
[0021] Preferably, the crossbeam is a composite concrete crossbeam
comprising: an H-beam; stirrup bars installed at a predetermined
interval along the H-beam; and concrete member embedding at least a
portion of the H-beam, and wherein a front end of the concrete
member of the composite concrete crossbeam rest on the support
portion.
[0022] Preferably, a crossbeam installed on the outer portion of a
wall comprises a support provided on the edge of the upper surface
of the concrete member, and wherein an outer slab mold having a
section of L-shape is installed on the support.
[0023] More preferably, a crossbeam installed on the outer portion
of a wall comprises a support provided on the edge of the upper
surface of the concrete member, and a reinforcement angle bar
connected between the upper surface and the side surface of the
support, and wherein an outer slab mold having a section of L-shape
is installed on the support.
[0024] According to the present invention, since buildings are
constructed by installing pre-cast composite concrete columns and
connecting crossbeams to the composite concrete columns, the
construction procedure is simplified and the period of construction
is reduced.
[0025] Particularly, the composite concrete column would be
advantageous if it is used together with the composite concrete
crossbeams suggested by the inventor.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] These and/or other aspects and advantages of the invention
will become apparent and more readily appreciated from the
following description of the embodiments, taken in conjunction with
the accompanying drawings of which:
[0027] FIG. 1 is an exploded perspective view schematically showing
a composite concrete column according to a first preferred
embodiment of the present invention;
[0028] FIG. 2 is a front sectional view schematically showing a
composite concrete column according to the first preferred
embodiment of the present invention;
[0029] FIG. 3 is a side sectional view schematically showing a
composite concrete column according to the first preferred
embodiment of the present invention;
[0030] FIG. 4 is a side sectional view schematically showing a
composite concrete column according to a second preferred
embodiment of the present invention;
[0031] FIG. 5 is a side sectional view schematically showing a
composite concrete column according to a third preferred embodiment
of the present invention;
[0032] FIG. 6 is an exploded perspective view schematically showing
a composite concrete column in FIG. 5;
[0033] FIG. 7 is an exploded perspective view schematically showing
a composite concrete column according to a fourth preferred
embodiment of the present invention;
[0034] FIG. 8 is a side sectional view schematically showing a
composite concrete column according to a fourth preferred
embodiment of the present invention;
[0035] FIG. 9 is a planar sectional view schematically showing a
composite concrete column in FIG. 8.
[0036] FIG. 10 is an exploded perspective view schematically
showing a composite concrete column according to a fifth preferred
embodiment of the present invention;
[0037] FIG. 11 is a planar sectional view schematically showing a
composite concrete column in FIG. 10.
[0038] FIG. 12 is a side sectional view schematically showing a
construction state using the composite concrete column according to
the preferred embodiment of the present invention;
[0039] FIG. 13 is a planar sectional view schematically showing a
construction state using the composite concrete column according to
the preferred embodiment of the present invention;
[0040] FIG. 14 is a perspective view schematically showing a
composite concrete crossbeam connected to the composite concrete
column according to the preferred embodiment of the present
invention;
[0041] FIG. 15 is a plan view schematically showing a composite
concrete crossbeam connected to the composite concrete column
according to the preferred embodiment of the present invention;
[0042] FIG. 16 is a planar sectional view schematically showing a
construction state in which the composite concrete crossbeams are
connected to the composite concrete column according to the
preferred embodiment of the present invention;
[0043] FIG. 17 is a perspective view schematically showing a
composite concrete crossbeam for connecting another composite
concrete crossbeam according to the preferred embodiment of the
present invention;
[0044] FIG. 18 is a sectional view schematically showing a
construction state in which the composite concrete crossbeams are
connected with a traverse reinforcement member according to the
preferred embodiment of the present invention;
[0045] FIG. 19 is a sectional view schematically showing a
construction state of outer area according to the preferred
embodiment of the present invention; and
[0046] FIG. 20 is a sectional view schematically showing a
construction state of outer area according to anther preferred
embodiment of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0047] FIGS. 1 through 3 show a composite concrete column according
to a preferred embodiment of the present invention. Here, FIG. 1 is
a perspective view of a composite concrete column, FIG. 2 is a
front sectional view of a composite concrete column, and FIG. 3 is
a side sectional view of a composite concrete column.
[0048] Referring to the drawings, a composite concrete column of
the present invention comprises concrete column portions 10 and 20
extending lengthwise, an H-beam 30 connected between ends of the
concrete column portions 10 and 20 to be exposed, and a plurality
of reinforcement bars 40 embedded in the concrete column portions
10 and 20 around the H-beam 30 to extend lengthwise.
[0049] The concrete column portions comprise an upper concrete
column portion 10 and a lower concrete column portion 20 so that an
exposed portion 15 where the H-beam 30 and the reinforcement bars
40 are exposed is formed between the lower end of the upper
concrete column portion 10 and the upper end of the lower concrete
column portion 20. As described later, ends of crossbeams are
connected to the exposed portion 15 so that the exposed portion 15
is located as high as a slab is formed.
[0050] The exposed portion 15 has a plurality of brackets 51, 52,
53 and 54 to connect the crossbeam. For example, the brackets 51,
52, 53 and 54 may be T-shaped steel member having fastening holes
55 that is welded to the side surface of the H-beam 30. The H-beam
30 includes a pair of flanges 31 and 32 in parallel, and a web 33
connecting the pair of flanges 31 and 32 so that the brackets 51
and 53 are welded to the outer surfaces of the flanges 31 and 32,
and the brackets 52 and 54 are welded to both sides of the web 33
of the H-beam 30. However, the brackets are not limited to the
present embodiment, and may be modified so as to connect ends of
crossbeam by means of fasteners.
[0051] The concrete column portions 10 and 20 are body of the
column, and preferably have a section of square or circle, etc.
More preferably, upper ends of the concrete column portion 10 and
20 have a support portion 22 laterally extending to stably support
the end of the crossbeam. Accordingly, the end of the crossbeam is
rest on the support portion 22 to be stably supported. However, the
present embodiment does not restrict the configuration of the
concrete column portion. In an alternative embodiment, the concrete
column portion (see 20' of FIG. 4) may not have the support
portion.
[0052] According to the present embodiment, the H-beam 30 is
connected with the concrete column portions 10 and 20 so that the
ends of the H-beam 30 are embedded in the concrete column portions
10 and 20. That is, an upper end 30a of the H-beam is embedded in
the lower end of the upper concrete column portion 10, and lower
end 30b of the H-beam is embedded in the upper end of the lower
concrete column portion 20. More preferably, a plurality of studs
34 are formed on the side surface of the H-beam 30 that is embedded
in the concrete column portion, which results in firm connection
with the concrete column portion.
[0053] The reinforcement bars 40 are installed around the H-beam 30
to extend along the length of the concrete column portions 10 and
20 so that most of the length of the reinforcement bars 40 is
embedded in the concrete column portions 10 and 20 while only a
part of them is exposed at the exposed portion 15. The
reinforcement bars may include modifications as long as it is able
to reinforce the composite concrete column of the present
invention.
[0054] Although the present embodiment illustrates the composite
concrete column having two concrete column portions, the number of
the concrete column portion is not limited to this, and the
composite concrete column of the present invention may comprise
three concrete column portions.
[0055] FIGS. 5 and 6 show a composite concrete column according to
a third embodiment of the present invention. Here, the same numeral
references as the previous embodiment denote the same members.
[0056] Referring to the drawings, a composite concrete column of
the present embodiment comprises concrete column portions 10 and 20
extending lengthwise, embedded plates 60 which are embedded in the
ends of the concrete column portions 10 and 20 so that one sides of
the embedded plates 60 are exposed, an H-beam 301 connected to the
embedded plates 60, and a plurality of reinforcement bars 40
embedded in the concrete column portions 10 and 20 around the
H-beam 30a to extend lengthwise.
[0057] In the present embodiment, embedded plates 60 made of steel
are installed at the lower end of the upper concrete column portion
10 and the upper end of the lower concrete column portion 20,
respectively. The embedded plates 60 are embedded in the concrete
column portions 10 and 20 of which one sides are exposed. Also, the
embedded plates 60 have a plurality of studs 62 at the other ends
to be fixed in the concrete column portions 10 and 20.
[0058] The end of H-beam 301 is welded to the exposed surface of
the embedded plate 60 as shown in FIG. 6. According to the present
embodiment, the H-beam 301 has the same height as the exposed
portion 15. Also, like the previous embodiment, a plurality of
brackets 51, 52, 53 and 54 is connected to the side surface of the
H-beam 301.
[0059] In the composite concrete column of the present embodiment,
the concrete column portions 10 and 20 and the H-beam 301 may be
welded in the factory in advance, and alternatively, they may be
assembled by welding in place. In the latter case, the composite
concrete column can be downsized to facilitate transportation.
[0060] FIGS. 7 to 9 show a composite concrete column according to a
fourth embodiment of the present invention. FIG. 7 is a perspective
view of a composite concrete column, FIG. 8 is a side sectional
view of a composite concrete column, and FIG. 9 is a planar
sectional view of a composite concrete column. Here, the same
numeral references as the previous embodiment denote the same
members.
[0061] Referring to the drawings, a composite concrete column of
the present embodiment comprises concrete column portions 10 and 20
extending lengthwise, an H-beam 302 embedded in the concrete column
portions 10 and 20 in the whole length of the concrete column
portions 10 and 20 while exposed between the concrete column
portions 10 and 20, and a plurality of reinforcement bars 40
embedded in the concrete column portions 10 and 20 around the
H-beam 302 to extend lengthwise.
[0062] In the present embodiment, most of the length of the H-beam
302 is embedded in the concrete column portions 10 and 20, while
only a part of the H-beam 302 is exposed at an exposed portion 15
between the concrete column portions 10 and 20.
[0063] Preferably, the concrete column portions 10 and 20 have a
cavity 70 as shown in FIG. 9. More preferably, the cavity 70 is
formed between flanges 302a and 302b of the H-beam along the length
of the H-beam. However, the cavity may be formed at any place in
the concrete column portions 10 and 20 to have various shapes.
[0064] The cavity 70 makes the composite concrete column light so
as to ease dealing and transferring them. Also, with the cavity 70,
the concrete column portions 10 and 20 functions as a mold when
concreting.
[0065] FIGS. 10 and 11 show a composite concrete column according
to a fifth embodiment of the present invention. FIG. 10 is a
perspective view of a composite concrete column, and FIG. 11 is a
planar sectional view of a composite concrete column.
[0066] As shown in the drawings, a composite concrete column of the
present embodiment comprises an H-beam 303, concrete column
portions 100 and 200 attached to both side surfaces of the H-beam
303 extending lengthwise, and a plurality of reinforcement bars 40
embedded in the concrete column portions 100 and 200 around the
H-beam 303 to extend lengthwise.
[0067] The concrete column portions comprise a pair of upper
concrete column portions 101 and 102 formed on the side surfaces of
the flanges 303a and 303b of the H-beam 303 to face each other, and
a pair of lower concrete column portions 201 and 202. A plurality
of studs 305 are formed on the side surfaces of the flanges 303a
and 303b of the H-beam 303 that is embedded in the concrete column
portion, which results in firm connection with the concrete column
portion.
[0068] The present embodiment makes the composite concrete column
light so as to ease dealing and transferring them like the previous
embodiment. Also, molds 310 and 311 should be installed to cover
the cavity between the concrete column portions 100 and 200 as
shown in FIG. 11.
[0069] Now the construction method using the above composite
concrete column will be described. FIGS. 12 and 13 illustrate the
construction of building structure using the composite concrete
column. For convenience of explanation, the present embodiment is
directed to the composite concrete column of FIGS. 1 to 3, but
other composite concrete columns may be adopted in the same
way.
[0070] FIG. 12 shows a composite concrete column of the present
invention installed on the ground G in the construction place. The
composite concrete column is manufactured in the factory in
advance, and then fixed to the ground at the lower end of the
concrete column portion 20.
[0071] Subsequently, crossbeams 400 are connected to the exposed
portion 15 of the composite concrete column at the end thereof. In
the present invention, the crossbeam denotes an H-beam or a
structure having an H-beam. More preferably, the crossbeam
comprises the composite concrete crossbeam of FIGS. 14 and 15.
[0072] Referring to FIGS. 14 and 15, the composite concrete
crossbeam comprises an H-beam 410, stirrup bars 420 installed at a
predetermined interval along the H-beam 410, and concrete member
430 embedding at least a portion of the H-beam 410. The H-beam 410
includes an upper flange 411 and a lower flange 412 in parallel
each other, and a web 413 connecting the upper and lower flanges
411 and 412.
[0073] Preferably, the lower flange 412 of the H-beam 410 has studs
embedded in the concrete member 430 so that the H-beam 410 is able
to firmly connect with the concrete member 430.
[0074] The stirrup bars 420 are arranged at a predetermined
interval along the length of the H-beam 410, preferably, the
stirrup bar 420 comprises a horizontal bar portion 421 embedded in
the concrete member 430 to traverse the lower surface of the lower
flange 412 of the H-beam 410, a intermediate bar portion 422
extending upward from the both ends of the horizontal bar portion
421 with an upper end of the intermediate bar portion 422 exposed
out of the concrete member, and a extended bar portion 423
laterally extending outward from the upper end of the intermediate
bar portion 422.
[0075] The stirrup bars 420 make a compression force along the
H-beam 410 to apply evenly through the section of the H-beam, and
resist to a shear force applied in the direction rectangular to the
H-beam. It should be understood that various kinds of stirrup bars
may be adopted, not limited to the embodiment.
[0076] The concrete member 430 is formed integrally on the H-beam
410 lengthwise to embed at least a portion of the length of the
H-beam. Preferably, the concrete member 430 embeds at least a part
of the lower flange 412.
[0077] The concrete member 430 effectively resists to a bending
force and a compression force together with the H-beam 410. Also,
the concrete member 430 increases in the sectional area of the
composite concrete column to thereby strengthen the resistance to
external forces.
[0078] As shown in the drawing, both ends of the H-beam 410 are
exposed out of the concrete member 430 so that the composite
concrete crossbeam can be connected to the composite concrete
column of the present invention. To do so, fastening holes 410a may
be formed at the ends of the H-beam 410.
[0079] Preferably, the composite concrete crossbeam 400 comprises
extension/compression bars which resist to an extension force and a
compression force applied to the composite concrete crossbeam.
Preferably, the extension/compression bars comprise a plurality of
embedded bars 440 embedded between the lower flange 412 of the
H-beam 410 and the horizontal bar portions 421 of the stirrup bars
420 in the concrete member in the lengthwise direction, and exposed
bars 450 which are not embedded in the concrete member 430.
Additionally, another typed bar other than the embedded bars 440
and the exposed bars 450 may be adopted.
[0080] More preferably, reinforcement members 460 are further
provided to support the stirrup bars 420 and the concrete member
430. The reinforcement member 460 is a reinforcement bar or a
bar-typed member of which one end is welded to the upper flange 411
of the H-beam 410 and the other end is connected to the exposed
portion of the stirrup bars 420.
[0081] FIGS. 12 and 13 illustrate the state in which composite
concrete crossbeams 400 having the above mentioned configuration
are connected to the composite concrete columns of the present
invention. Specifically, the end of the H-beam 410 of the composite
concrete crossbeam 400 is connected to the H-beam 30 at the exposed
portion of the composite concrete column. Preferably, the brackets
51 and 53 provided on the H-beam 30 of the composite concrete
column are connected with the end of the H-beam 410 of the
composite concrete crossbeam 400 by means of a connection plate 56
while fasteners such as bolts are inserted into the fastening holes
55 and 410a and fixed. FIG. 13 shows the H-beams 410 that are
connected with the brackets 51, 52, 53 and 54 of the composite
concrete column by bolts.
[0082] More preferably, a front end 430a of the concrete member 430
of the composite concrete crossbeam 400 rests on the upper surface,
i.e., on the support portion 22 of the lower concrete column
portion 20 of the composite concrete column. With such a structure,
it is very easy to connect the composite concrete crossbeam to the
composite concrete column, and stability of structure may be
assured.
[0083] FIG. 16 shows four composite concrete columns 10a, 10b, 10c
and 10d on which composite concrete crossbeams 400a, 400b, 400c and
400d are connected. Another composite concrete crossbeam 400e is
further connected between the two composite concrete crossbeams
400a and 400c. Here, the composite concrete crossbeams 400a and
400c have connection brackets 470 formed with fastening holes 470a
at the connection point as shown in FIG. 17. Accordingly, the end
of the H-beam of the composite concrete crossbeam 400e can be
connected to the connection bracket 470 in the same manner as the
above.
[0084] Referring again to FIG. 16, the composite concrete
crossbeams 400b, 400d and 400e may be fastened each other by a
traverse reinforcement member 500 to prevent deformation or
distortion of the composite concrete crossbeams when concreting.
The traverse reinforcement member 500 is like an H-beam,
preferably, which is welded to the upper flange 411 of the H-beam
410 of the composite concrete crossbeam 400e as shown in FIG.
18.
[0085] As mentioned above, when the composite concrete columns and
the composite concrete crossbeams are installed, molds are
installed. A mold such as a deck plate may be installed between the
composite concrete crossbeams 400a through 400e for a slab.
Installation and construction of the deck plate mat be conducted
according to Korean patent application No. 10-2005-0104999.
[0086] A mold 520 may be installed at the connection point of the
composite concrete column and the composite concrete crossbeam. At
the same time, reinforcement bars are additionally arranged for the
slab.
[0087] FIG. 19 illustrates a composite concrete crossbeam 400' at
the outer portion of a wall. The composite concrete crossbeam 400'
of the present embodiment may comprises the same elements as the
previous embodiment, and a support 481 having a section of L-shape
is provided on the edge of the upper surface of the concrete member
430. Preferably, the support 481 is fixed by an embedded bolt 482
in the concrete member 430. Also, an outer slab mold 483 having a
section of L-shape is installed on the upper surface of the support
481. The outer slab mold 483 may be engaged with the support 481 by
welding or bolts.
[0088] FIG. 20 illustrates another embodiment of the present
invention showing an outer portion of a wall. The composite
concrete crossbeam 400'' has a support 491 of L-shape at one side.
The support 491 has a length of the upper surface and the side
surface larger than the support 481 of FIG. 19, and it may be fixed
to the concrete member 430 by a plurality of embedded bolts 492 and
493 at the side surface.
[0089] More preferably, a reinforcement angle bar 494 is connected
between the upper surface and the side surface of the support 491
to cover the load on the upper surface of the support 491. Like the
previous embodiment, the outer slab mold 495 of L-shape is
installed on the upper surface of the support 491.
[0090] When the installation of the composite concrete columns and
the composite concrete crossbeams with molds are completed,
concrete is put on the structure and cured.
[0091] Additionally, when constructing upper storey, another
composite concrete column is connected on the composite concrete
column. Here, the composite concrete columns can be connected by
welding ends of the H-beams 30. That is, since the additional
composite concrete column has an H-beam or an embedded plate
exposed at the lower end thereof, the H-beam or the embedded plate
is welded to the upper end of the lower composite concrete column.
At this time, the reinforcement bars may be linked with another bar
by a mechanical splice.
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