KR101637330B1 - Correctible girder structure for rahmen bridge and the constructurion method using the same - Google Patents
Correctible girder structure for rahmen bridge and the constructurion method using the same Download PDFInfo
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- KR101637330B1 KR101637330B1 KR1020160014614A KR20160014614A KR101637330B1 KR 101637330 B1 KR101637330 B1 KR 101637330B1 KR 1020160014614 A KR1020160014614 A KR 1020160014614A KR 20160014614 A KR20160014614 A KR 20160014614A KR 101637330 B1 KR101637330 B1 KR 101637330B1
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- girder
- connection
- horizontal
- center
- web
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
- E01D2101/285—Composite prestressed concrete-metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
The present invention relates to a girder installation structure of a ramen bridge, more specifically, to a girder installation structure of a ramen bridge capable of minimizing cracks in a right corner portion while achieving workability and precision in connection portions of the girder, and a construction method thereof will be.
Since the upper structure and the lower structure supporting the upper structure of the girder are rigidly coupled with each other, the upper structure and the lower structure act integrally, and therefore the rigidity is excellent. However, there is a limit in the length of the span, and cracks may occur in the right corner where the upper structure and the lower structure are combined.
Various methods for solving the problems of the above-mentioned ramen bridge have been continuously studied.
Typical examples of such a method include a girder having a composite structure using a steel having a high stiffness with respect to a bending moment, but by introducing a prestress into a portion having a large bending moment, the cross section and the weight of the girder are reduced and the bending stiffness is increased. It is to promote the chapter conversation.
FIG. 1 shows an example in which the above-mentioned method is applied. A prestress is introduced to the upper portion of the girder at which the moment is generated, and a crack is generated at the upper portion of the girder at which the moment is generated. And the rigidity against the girder is increased, so that the long-term conversation of the span is aimed at.
More specifically, FIG. 1 is a view of a
After the
Therefore, by introducing the prestress into each part of the girder, the raymen bridge according to the above-described conventional technique can minimize the cracks in the right corner and reduce the cross section of the girder while reducing the length of the girder.
However, the above-described conventional technique requires a separate member, equipment and attraction force for introducing the
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a method and apparatus for connecting a girder member to a girder in a site without any additional installation of a temporary vent or a crane, The present invention is to provide a girder installation structure of a ramen bridge in which the bending stiffness is increased by the weight of the girder member during the construction process of the bridge without installing additional tension members and tensioning.
According to a preferred embodiment of the present invention to solve the above-described problems, there is provided a concrete structure comprising: a girder member for supporting a load on an upper portion of a composite concrete, a lower support member for supporting the girder member and transmitting the load to a concrete support, And a connection adjusting member for connecting the girder member and the lower supporting member, wherein the girder member comprises a pair of connecting girders bolted to the connection adjusting member and a center girder located between the connecting girders, And a connecting portion between the connecting girder and the center girder is provided with a means for preventing the center girder from being turned off.
According to another preferred embodiment of the present invention, a) an adjustment bracket having a first horizontal slot is provided at one end thereof, and a lower flange and a connection web is provided at the other end thereof
A pair of connecting girders formed with insertion brims of a cross section; A pair of insert webs at each end and a separate lower flange A center girder formed with a cam groove formed upwardly with respect to the longitudinal direction with an insertion groove portion of a cross section formed therein; Preparing a connection adjusting member comprising a girder fixing portion having upper and lower through holes and a horizontal insertion groove at a lower portion and a girder fixing portion having a curved upper surface; b) installing a lower support member on the concrete support, and installing a horizontal plate on the upper end of the lower support member so as to protrude outward; c) inserting the protruding portion of the horizontal plate into the horizontal insertion groove of the connection adjusting member so that the connection adjusting member is installed on the lower supporting member; d) inserting the connecting girder into the girder mounting portion of the connection adjusting member, inserting the adjusting bolt into the first horizontal slot of the adjusting bracket and the through hole of the girder fixing portion to thereby assemble the connecting girder and the connection adjusting member; e) The connecting web of the insertion protrusion formed on the connecting girder is inserted between the insertion webs of the insertion groove formed in the center girder and the lower flange of the insertion groove is mounted on the lower flange of the insertion protrusion, So that the camber of the center girder is firstly relaxed by its own weight; Moving the connecting girder back and forth or rotating it up and down so that the connecting webs and the connecting webs are aligned with each other and the central girder and the connecting girder are joined together by bolts to form the integrated girder member; f) secondarily modifying the degree of the camber by the load of the upper plate concrete by placing the upper plate concrete on the girder member; g) assembling the connecting girder and the connecting adjusting member at the same time; and h) laying the supporting member concrete to the lower supporting member so that the connection adjusting member is embedded, so as to laminate the girder member and the lower supporting member.According to another preferred embodiment of the present invention, a) an adjustment bracket having a first horizontal slot is provided at one end thereof, and a lower flange and a connection web is provided at the other end thereof
A pair of connecting girders formed with insertion brims of a cross section; A pair of insert webs at each end and a separate lower flange A center girder formed with a cam groove formed upwardly with respect to the longitudinal direction with an insertion groove portion of a cross section formed therein; Preparing a connection adjusting member comprising a girder fixing portion having upper and lower through holes and a horizontal insertion groove at a lower portion and a girder fixing portion having a curved upper surface; b) installing a lower support member on the concrete support, and installing a horizontal plate on the upper end of the lower support member so as to protrude outward; c) inserting the protruding portion of the horizontal plate into the horizontal insertion groove of the connection adjusting member so that the connection adjusting member is installed on the lower supporting member; d) inserting the connecting girder into the girder mounting portion of the connection adjusting member, inserting the adjusting bolt into the first horizontal slot of the adjusting bracket and the through hole of the girder fixing portion to thereby assemble the connecting girder and the connection adjusting member; e) The connecting web of the insertion protrusion formed on the connecting girder is inserted between the insertion webs of the insertion groove formed in the center girder and the lower flange of the insertion groove is mounted on the lower flange of the insertion protrusion, ; f) lowering the degree of the camber by the load of the upper plate concrete by placing the upper plate concrete in the center girder; g) correcting the connecting position of the connecting girder and the center girder by moving the connecting girder back and forth, or rotating it up and down, and then combining them to form an integrated girder member; h) assembling the connecting girder and the connecting adjusting member at the same time; (i) concurrently pouring the supporting member concrete to the upper plate concrete and the lower supporting member with respect to the connecting girder portion so that the connection adjusting member is embedded.
The present invention can omit the use of heavy equipment such as a crane for placing a medal for a temporary vent or a center girder, and it is unnecessary to install a tension member and load equipment for the introduction of a prestress to reduce costs such as materials and labor costs In addition, since the process is reduced, the air is greatly reduced, which makes it possible to construct a very economical ramen bridge.
In addition, since the center girder is securely mounted on the connecting girder, it is possible to safely and easily perform not only the connection work but also the upper work, and the correction of the construction error is very easy, .
In addition, the present invention enables a prestress to be introduced so as to efficiently cope with bending moments in different directions occurring in each of the center girder and the connecting girder, and it is possible to optimize the cross section of the girder member, Thereby minimizing the occurrence of cracks.
Also, since the connection adjusting member of the present invention is manufactured by an independent member, it is installed only by fitting and bolt assembly, thereby reducing field welding and versatility applicable to various types of girder installation structures.
1 is a cross-sectional view showing a process of constructing a ramen bridge by a conventional technique.
2 is a perspective view for explaining an installation structure of a girder according to an embodiment of the present invention.
3 is a perspective view showing the respective structures of a center girder, a connecting girder, and a connection adjusting member constituting the girder installation structure.
4 is an exploded perspective view for explaining a connection relation between the connecting girder, the connection adjusting member and the lower supporting member.
5 is a perspective view illustrating a process of connecting a center girder and a connecting girder in sequence.
Figs. 6 to 15 are cross-sectional views and perspective views illustrating a process of constructing a ramen bridge according to the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in order to obscure or obscure the technical idea of the present invention due to the detailed description of the known structure in describing the present invention, the description of the structure of the above known structure will be omitted.
FIG. 2 is a perspective view of a girder installation structure according to an embodiment of the present invention. FIG. 3 is a perspective view illustrating a girder installation structure according to an embodiment of the present invention. 4 is a perspective view showing the configuration of the
The girder installation structure of the present invention is basically made up of a
The
3 (a), the connecting
The
To this end, the
As described above, at the end of the connecting
The
The
Also, although not shown, casing concrete may be installed in a lower flange.
The
Further, the
The
The
It is preferable that the upper surface of the
The
The
The
The
When the two plate members are assembled to constitute the
The
4, when the
The connecting
5 illustrates a process of connecting the
The connecting
The connecting structure between the connecting
In addition, the connecting portion between the connecting
The conduction preventing means is provided by providing a second
5 (c), when the
The strong coupling between the
Next, a method of constructing a ramen bridge using the example of the most preferable girder installation structure of the present invention explained so far will be described.
FIGS. 6 to 11 show steps of a method of constructing a ramen bridge using the girder installation structure according to the first embodiment of the present invention.
As described above, the time at which the
a) Connecting girder (120), Central girder (110) and The connection adjusting member 200 (See Fig. 3);
The connecting
One pair of connecting
The
A casing concrete may be previously formed on the lower flange portion of the
The
b) installing the
The
The degree of protrusion outward from the side surface of the lower supporting
The
c) installing the
The protruding portion of the
The
d)
In the
When the
In this state, the
This completes the primary fixing of the connecting
e) a pair of
Connecting girder
(Not shown)
The
After completion of the installation of the connecting
The
At this time, a means for preventing the
A second
Since the
The
When the camber is mounted on the connecting
When the camber of the
At this time, the first
The connecting
On the other hand, when the camber is formed only in the central portion of the
f)
In the
When the integration of the
In other words, the camber of the
In order to efficiently introduce the prestressing in this step, the
The horizontal length of the
In this step, a prestress is introduced into the
g)
The
When the installation of the
At this time, another prestress can be further introduced to both ends of the
If the
Therefore, in this step, the adjusting
h)
The
When the final connection between the
When each of the above steps is completed, finishing work such as packing and railing is completed to complete the ramen bridge.
In the first embodiment of the present invention relating to the construction method of the ramen bridge, after the
That is, the method of constructing the ramen bridge according to the second embodiment of the present invention comprises the steps of: a) preparing the connecting
Therefore, in the second embodiment, description will be made only of the step e) which is different from the first embodiment, and the description of the overlapping parts will be omitted from the description of the corresponding steps in the first embodiment.
e) a pair of Connecting girder (Not shown) The center girder 110 (See Figs. 5 and 13);
When the installation of the connecting
In this step, however, the
f)
In the
When the
In this step, since the
g)
Construction error
Calibrated
after
The connecting
When the camber of the
h)
The
When the integration of the
At this time, it is possible to further introduce a prestress to both ends of the
i)
The
When the final connection between the
When each of the above steps is completed, finishing work such as packaging and railing installation is completed in the same manner as in the first embodiment to complete the ramen bridge.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that it will be possible to carry out various modifications thereof. It is therefore intended that such modifications are within the scope of the invention as set forth in the claims.
100; A
111; An
111b, 121b; A
121; An insertion protrusion 120a; Connecting web
122;
131; A second
133; A fixing
150;
210; A
221; An upper fixing
222; A
230; Adjusting
310; A
510;
Claims (10)
The girder member 100 is composed of a pair of connecting girders 120 bolted to the connection adjusting member 200 and a center girder 110 located between the connecting girders 120, The center girder 110 is provided at the connection portion between the center girder 110 and the center girder 110,
An adjustment bracket 122 having a first horizontal slot 122a is installed at one end of the connecting girder 120; The connection adjusting member 200 includes a girder fixing part 220 having upper and lower through holes 221a and a girder fixing part 210 on which an end of the connecting girder 120 is placed; Wherein the connecting girder 120 and the connection adjusting member 200 are connected to each other by connecting the adjusting bolt 230 to the first horizontal elongated hole 122a and the through hole 221a. Installation structure.
a) an adjusting bracket 122 provided with a first horizontal slot 122a at one end and a lower flange 121b and a connecting web 121a at the other end A pair of connecting girders 120 on which an insertion protrusion 121 of a cross section is formed; A pair of insertion webs 111a and a separate lower flange 111b at both ends thereof A center girder 110 having a cam groove formed upwardly with respect to the longitudinal direction and formed with an insertion groove 111 having a shape of a cross section; A connection adjusting member 200 including a girder fixing portion 220 having a through hole 221a and a horizontal insertion groove 222a at a lower portion thereof and a girder mounting portion 210 having a curved upper surface, , Respectively;
b) installing a lower support member (300) on the concrete support (510) and installing a horizontal plate (310) to protrude outward at the upper end of the lower support member (300);
c) inserting the projecting portion of the horizontal plate 310 into the horizontal insertion groove 222a of the connection adjustment member 200 to install the connection adjustment member 200 on the lower support member 300;
d) The connecting girder 120 is mounted on the girder mounting portion 210 of the connection adjusting member 200 and the adjusting bolt 230 is fixed to the first horizontal elongated hole 122a of the adjusting bracket 122 and the girder fixing portion 220 Through the through hole 221a of the coupling girder 120 to fasten the coupling girder 120 and the coupling adjusting member 200 together;
e) The connection web 121a of the insertion protrusion 121 formed in the connection girder 120 is inserted between the insertion web 111a of the insertion groove 111 formed in the center girder 110, The center girder 110 is mounted between the pair of connecting girders 120 such that the lower flange 111b is mounted on the lower flange 121b of the insertion protrusion 121 and the camber of the center girder 110 Firstly relaxed; The connecting girder 120 is moved back and forth or up and down so that the connecting webs 111a and the connecting webs 121a are aligned with each other and the bolts are fastened to the center girder 110) and the connecting girder (120) so as to form an integrated girder member (100);
f) secondarily modifying the degree of the camber by the load of the upper plate concrete (400) by placing the upper plate concrete (400) on the girder member (100);
g) assembling the connecting girder 120 and the connection adjusting member 200 in the main body;
and h) stepping the girder member 100 and the lower supporting member 300 by placing the supporting member concrete 520 on the lower supporting member 300 so that the connection adjusting member 200 is embedded therein Construction method of raymen bridge characterized by.
a) an adjusting bracket 122 provided with a first horizontal slot 122a at one end and a lower flange 121b and a connecting web 121a at the other end A pair of connecting girders 120 on which an insertion protrusion 121 of a cross section is formed; A pair of insertion webs 111a and a separate lower flange 111b at both ends thereof A center girder 110 having a cam groove formed upwardly with respect to the longitudinal direction and formed with an insertion groove 111 having a shape of a cross section; A connection adjusting member 200 including a girder fixing portion 220 having a through hole 221a and a horizontal insertion groove 222a at a lower portion thereof and a girder mounting portion 210 having a curved upper surface, , Respectively;
b) installing a lower support member (300) on the concrete support (510) and installing a horizontal plate (310) to protrude outward at the upper end of the lower support member (300);
c) inserting the projecting portion of the horizontal plate 310 into the horizontal insertion groove 222a of the connection adjustment member 200 to install the connection adjustment member 200 on the lower support member 300;
d) The connecting girder 120 is mounted on the girder mounting portion 210 of the connection adjusting member 200 and the adjusting bolt 230 is fixed to the first horizontal elongated hole 122a of the adjusting bracket 122 and the girder fixing portion 220 Through the through hole 221a of the coupling girder 120 to fasten the coupling girder 120 and the coupling adjusting member 200 together;
e) The connection web 121a of the insertion protrusion 121 formed in the connection girder 120 is inserted between the insertion web 111a of the insertion groove 111 formed in the center girder 110, Placing the center girder 110 between the pair of connecting girders 120 such that the lower flange 111b is mounted on the lower flange 121b of the insertion protrusion 121;
f) modifying the degree of the camber by the load of the upper plate concrete (400) by placing the upper plate concrete (400) on the central girder (110);
g) correcting the connecting position of the connecting girder 120 and the center girder 110 by moving the connecting girder 120 back and forth or rotating up and down, and then combining them to form an integrated girder member 100;
h) assembling the connecting girder (120) and the connecting adjusting member (200);
i) The top plate concrete 400 and the supporting member concrete 520 for the lower supporting member 300 are poured into the connection girder 120 so that the connection adjusting member 200 is embedded, And a step of raising the member (300).
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101788581B1 (en) * | 2016-11-02 | 2017-10-20 | 엘에스빌드윈 주식회사 | Constructing Method of Bridge with Reinforced Corner Portion and Bridge with the Same |
KR101808825B1 (en) * | 2016-12-02 | 2017-12-13 | (주)아이오컨스텍 | Support device for leveling-adjustment and displacement recipience and overturning prevention of upper girder and Rahmen bridge using of the same |
KR101861968B1 (en) * | 2017-08-11 | 2018-05-28 | 오종훈 | Rigid-frame bridge |
KR102103447B1 (en) * | 2020-01-15 | 2020-04-22 | 주식회사 에이치티 | Installation length adjustable prefabricating type wood bridge |
KR102115704B1 (en) * | 2019-08-30 | 2020-05-26 | (주)에스앤씨산업 | Rahmen bridge using anker and girder joint casing and construction method of the same |
KR102268895B1 (en) * | 2021-01-27 | 2021-06-24 | 주식회사 엠피이엔씨 | Bridge support structure that can prevent rotation, flow, and conduction, and ramen bridge using it |
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JPH10266342A (en) * | 1997-03-24 | 1998-10-06 | Nippon Light Metal Co Ltd | Joint construction of structural material |
KR101223699B1 (en) | 2012-05-10 | 2013-01-28 | 주식회사 젬콘 | Prestressed steel girder and it's manufacture and construction method which used pretensioning steel plate |
KR101432087B1 (en) * | 2014-05-20 | 2014-08-21 | (주) 대현이엔씨 | Composite rahman bridge using preflex beam and horizontal shear connectors and construction method thereof |
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2016
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10266342A (en) * | 1997-03-24 | 1998-10-06 | Nippon Light Metal Co Ltd | Joint construction of structural material |
KR101223699B1 (en) | 2012-05-10 | 2013-01-28 | 주식회사 젬콘 | Prestressed steel girder and it's manufacture and construction method which used pretensioning steel plate |
KR101432087B1 (en) * | 2014-05-20 | 2014-08-21 | (주) 대현이엔씨 | Composite rahman bridge using preflex beam and horizontal shear connectors and construction method thereof |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101788581B1 (en) * | 2016-11-02 | 2017-10-20 | 엘에스빌드윈 주식회사 | Constructing Method of Bridge with Reinforced Corner Portion and Bridge with the Same |
KR101808825B1 (en) * | 2016-12-02 | 2017-12-13 | (주)아이오컨스텍 | Support device for leveling-adjustment and displacement recipience and overturning prevention of upper girder and Rahmen bridge using of the same |
KR101861968B1 (en) * | 2017-08-11 | 2018-05-28 | 오종훈 | Rigid-frame bridge |
KR102115704B1 (en) * | 2019-08-30 | 2020-05-26 | (주)에스앤씨산업 | Rahmen bridge using anker and girder joint casing and construction method of the same |
KR102103447B1 (en) * | 2020-01-15 | 2020-04-22 | 주식회사 에이치티 | Installation length adjustable prefabricating type wood bridge |
KR102268895B1 (en) * | 2021-01-27 | 2021-06-24 | 주식회사 엠피이엔씨 | Bridge support structure that can prevent rotation, flow, and conduction, and ramen bridge using it |
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