KR20120117364A - Pier bracket supporting main girder used in movable scaffolding system - Google Patents

Pier bracket supporting main girder used in movable scaffolding system Download PDF

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Publication number
KR20120117364A
KR20120117364A KR1020110035079A KR20110035079A KR20120117364A KR 20120117364 A KR20120117364 A KR 20120117364A KR 1020110035079 A KR1020110035079 A KR 1020110035079A KR 20110035079 A KR20110035079 A KR 20110035079A KR 20120117364 A KR20120117364 A KR 20120117364A
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KR
South Korea
Prior art keywords
bracket
vertical
horizontal
main girder
horizontal member
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Application number
KR1020110035079A
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Korean (ko)
Inventor
곽현신
김은현
김태형
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브이에스엘코리아 주식회사
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Priority to KR1020110035079A priority Critical patent/KR20120117364A/en
Publication of KR20120117364A publication Critical patent/KR20120117364A/en

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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
    • E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/02—Piers; Abutments ; Protecting same against drifting ice

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention relates to a main girder support peer bracket which is not affected by the moment generated by the load of the bridge superstructure. The present invention is a horizontal member that is fixed inlet to the bracket inlet groove formed in the piers to support the main girder used in the mobile scaffolding method, a vertical member vertically connected to one side of the horizontal member and applied to the horizontal member It includes an inclined member connecting the other side of the horizontal member and the lower portion of the vertical member to transfer the load of the bridge upper structure to the vertical member, the horizontal member is a side of the horizontal member when applying the load of the bridge upper structure It provides a main girder support peer bracket, characterized in that rotatable around the center. Therefore, according to the present invention is not affected by the moment generated by the load of the bridge upper structure has the advantage that the stability of the peer bracket can be secured.

Description

PIER BRACKET SUPPORTING MAIN GIRDER USED IN MOVABLE SCAFFOLDING SYSTEM}

The present invention relates to equipment used for bridge construction, and more particularly, to a girder support peer bracket used in a mobile scaffolding method.

In general, post-tensioning system applied to bridges is based on the construction method of the upper part of the bridge.The free cantilever method (FCM), incremental launching method (ILM), precast segment method (PSM) and full staging method (FSM) It is constructed by a method such as a movable scaffolding system (MSS).

The MSS method, also known as the dual mobile scaffolding method, is a method of constructing bridges while moving on a pier using scaffolds and propulsion beams, which are special movable supporters with formwork, instead of eliminating ground drifts. Placing concrete on the main girder installed on the piers, and placing concrete, when the concrete reaches a certain strength, introduce pre-stress using PC steel, then remove the formwork, and the removed formwork is loaded on the moving equipment and moved to the next section. Will move.

The above-mentioned main girder is generally supported by a peer bracket installed in a piers, and conventionally used peer brackets use bolts and nuts to fasten horizontal beams, vertical beams and inclined beams.

However, when the bolts and nuts are fastened as described above, the problem occurs that the peer bracket does not effectively support the load of the bridge superstructure, and this problem often occurs at the connection portion between the horizontal beam and the vertical beam.

This is due to the bolted connection, which simultaneously exerts a load on the bridge superstructure and the resulting moment at the connection between the horizontal and vertical beams. Therefore, this situation needs improvement.

The present invention has been proposed to solve the above problems, an object of the present invention is to provide a main girder support peer bracket that is not affected by the moment generated by the load of the bridge superstructure.

In order to achieve the above object, the present invention is a horizontal member which is fixed inlet to the bracket inlet groove formed in the pier to support the main girder used in the mobile scaffolding method, and a vertical member connected vertically downward to one side of the horizontal member And an inclined member connecting the other side of the horizontal member to the lower portion of the vertical member so as to transfer the load of the bridge upper structure applied to the horizontal member to the vertical member, wherein the horizontal member is a load of the bridge upper structure. It provides a main girder support peer bracket, characterized in that rotatable around one side of the horizontal member when applied.

One side of the horizontal member is formed with an inner plate extending downward, one side of the vertical member is formed a pair of outer plates extending upward to be located on both sides of the inner plate, the outer plate and the inner plate is fixed with a pin member It is preferable to be.

The outer plate and the inner plate may be formed with a pin hole through which the pin member can penetrate, and a fastening member penetrating the outer plate and the inner plate at the same time may be provided around the pin hole.

The inner plate may be provided in plural in the width direction of the horizontal member, and the outer plate may be provided on both sides of the plurality of inner plates.

The vertical member is characterized in that the flat plate or strand.

One end of the inclined member may include a horizontal plate parallel to the horizontal member, and a fastening member penetrating the other side of the horizontal member and the horizontal plate at the same time.

The other end of the inclined member may be provided with a vertical plate parallel to the vertical member, and a fastening member penetrating the lower portion of the vertical member and the vertical plate at the same time.

The horizontal member, the vertical member, and the inclined member are provided in pairs to be symmetrical about the piers, and the pair of horizontal members are preferably interconnected by steel bars.

Peer bracket for supporting the main girder according to the present invention described above is effective to the main girder because the moment due to the load of the bridge upper structure is not applied to the connecting portion of the horizontal member and the vertical member, only the vertical load of the bridge upper structure is applied. There is an advantage that can be secured by supporting.

1 is a front view showing an embodiment of a main girder support peer bracket according to the present invention.
Figure 2 is a front view showing the inner plate and the outer plate of the girder bracket for supporting the main girder according to the present invention.
3 is a cross-sectional view of the II part.
Figure 4 is a front view showing another embodiment of the main girder support peer bracket according to the present invention.
FIG. 5 is data comparing a conventional peer bracket and a peer bracket according to an embodiment of the present invention. FIG. 5A is a view illustrating a state where each peer bracket is installed in a piers, and FIG. FIG. 5C is a diagram showing the vertical stress distribution of each peer bracket, and FIG. 5C is a diagram showing the bending stress distribution of each peer bracket.

Hereinafter, an embodiment of a main girder support peer bracket according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing an embodiment of the main girder support peer bracket according to the present invention, Figure 2 is a front view showing the inner plate and the outer plate of the main girder support peer bracket according to the present invention, Figure 3 Is a cross-sectional view of part I-I.

In the present embodiment, the horizontal member 100 and the horizontal member 100 is fixed to the bracket inlet groove 21 formed in the piers 20 to support the main girder 10 used in the mobile scaffolding method, The other side of the horizontal member 100 and the vertical member 200 so as to transfer the vertical member 200 and the vertical member 200 vertically connected to one side and the load of the bridge upper structure applied to the horizontal member 100 to the vertical member 200. It includes a slope member 300 for connecting the lower end of the 200, the horizontal member 100 is the main girder, characterized in that rotatable around one side of the horizontal member 100 when the load of the upper structure of the bridge Provide a support peer bracket.

As shown in FIG. 1, the main girder support peer bracket according to the present embodiment includes a horizontal member 100 on which the main girder 10 is seated, and a vertical member connected downwardly to one side of the horizontal member 100. 200 and the inclined member 300 supporting the horizontal member 100 to transfer the load of the bridge upper structure applied to the horizontal member 100 to the vertical member 200.

The main girder 10 is seated on the upper end of the horizontal member 100, the horizontal member 100 is fixed inlet to the bracket inlet groove 21 formed in the piers 20 to effectively support the load of the bridge upper structure. . This configuration has an advantage that even if the vertical load of the bridge upper structure is applied to the horizontal member 100 can be effectively supported without falling down.

The vertical member 200 is vertically connected downward to one side of the horizontal member 100, the inclined member 300 is connected to the lower end of the vertical member 200, the load of the bridge upper structure transmitted through the inclined member 300 It serves to deliver to the piers (20). It is also preferable that a separate buffer member (not shown) is provided at a portion where the pier 20 and the vertical member 200 abut. When the main girder 10 is seated on the horizontal member 100, an impact occurs, which is to prevent the pier 20 from being damaged due to the impact being transmitted to the pier 20.

As described above, the inclined member 300 serves to transfer the vertical load of the bridge upper structure applied to the horizontal member 100 to the vertical member 200.

Conventional peer brackets have fastened horizontal and vertical beams using fastening members such as bolts. That is, a plate is provided parallel to the horizontal beam on the top of the vertical beam, and the plate and the horizontal beam are fastened with fastening members such as bolts.

The fastening member such as the bolt was fastened in the up and down direction, but when fastening in the up and down direction, there was a problem that the fastening member such as the bolt was damaged by the moment generated by the load of the bridge upper structure.

To prevent this, a large number of fastening members such as bolts can be used. However, as the area occupied by the fastening members increases, the size of the horizontal beam and the vertical beam increases together, which may cause another problem of increasing the size of the peer bracket as a whole. .

In this embodiment, to solve this problem, the horizontal member 100 is configured to be rotatable about one side of the horizontal member 100 when a load of the bridge upper structure is applied. That is, since the horizontal member 100 is configured to be rotatable in a state in which the horizontal member 100 and the vertical member 200 are connected, the connection portion of the horizontal member 100 and the vertical member 200 is due to the load of the bridge upper structure. The generated moment is not applied, and eventually only the vertical load of the bridge upper structure is applied to the vertical member 200.

In this configuration, since only the vertical load of the upper structure of the bridge is applied to the vertical member 200, the peer bracket can be designed in consideration of the vertical load of the upper structure of the bridge. There is an advantage that the structure can be effectively supported.

One side of the horizontal member 100 is formed with an inner side plate 110 extending downward, one side of the vertical member 200 is a pair of outer side plates (upwardly extending so as to be located on both sides of the inner side plate 110) 210 is formed, the outer plate 210 and the inner plate 110 is preferably fixed to the pin member (30).

In this embodiment, the inner plate 110 and the vertical member 200 extends upward from one side of the lower side of the horizontal member 100 so as not to be affected by the moment generated by the load of the upper structure of the bridge, the inner plate ( The horizontal beam 100 and the vertical beam 200 are connected by a pair of outer plates 210 provided to be positioned at both sides of the 110. The outer plate 210 and the inner plate 110 are fixed by the pin member 30.

The outer plate 210 and the inner plate 110 is formed with a pin hole 31 through which the pin member 30 can pass, and the outer plate 210 and the inner plate 110 around the pin hole 31. ) May be provided with a fastening member 40 penetrating simultaneously.

As shown in FIG. 2, a pinhole 31 is formed in the inner plate 110 and the outer plate 210 so that the pin member 30 can be easily coupled. After the pin member 30 is coupled, the outer plate 210 and the inner side are arranged around the pinhole 31 into which the pin member 30 is inserted so that the horizontal beam 100 and the vertical beam 200 can be firmly coupled without shaking. It is preferable that the fastening member 40 penetrates the plate 110 at the same time.

The inner plate 110 may be provided in plural in the width direction of the horizontal member 100, and the outer plate 210 may be provided on both sides of the plurality of inner plates 110.

As shown in FIG. 3, the inner plate 110 formed in the horizontal member 100 may be provided in plural in the width direction of the horizontal member 100. In this case, it is preferable that the outer plate 210 is also provided in a plurality of pairs so as to be coupled to the plurality of inner plate 110, respectively. This configuration is because a plurality of pin members 30 used to connect the horizontal member 100 and the vertical member 200 is provided because it can effectively support the load of the bridge upper structure.

Figure 4 is a front view showing another embodiment of the main girder support peer bracket according to the present invention.

The vertical member 200 is characterized in that the flat plate or strand.

The horizontal member 100 is configured to be rotatable in order not to be affected by the moment generated by the load of the upper structure of the bridge. In this embodiment, as shown in FIG. Or a stranded wire. The flat plate or the strand is a member that can be bent. That is, the member does not generate a resistance to the moment generated by the load of the bridge superstructure. Therefore, when the vertical member 200 is formed of a flat plate or a stranded wire, the horizontal member 100 is rotatable about one end of the horizontal member 100. As a result, the moment generated due to the load of the bridge upper structure is not applied to the connection portion between the horizontal member 100 and the vertical member 200, and only the vertical load of the bridge upper structure is applied to the vertical member 200.

One end of the inclined member 300 is provided with a horizontal plate 310 parallel to the horizontal member 100, the other end of the inclined member 300, vertical plate 320 parallel to the vertical member 200 Is provided, the fastening member 40 can be provided through the other side of the horizontal member 100 and the horizontal plate 310 at the same time, the lower portion of the vertical member 200 and the vertical plate 320 A fastening member 40 penetrating at the same time may be provided.

As shown in FIG. 1, horizontal plates 310 and vertical plates 320 are provided at both ends of the inclined member 300. The horizontal plate 310 is parallel to the horizontal member 100, the vertical plate 320 is provided in parallel with the vertical member 200 and the other side and the vertical member of the horizontal member 100 through a plurality of fastening members 40 Connect the bottom of the 200. The fastening member 40 penetrating the other side of the horizontal member 100 and the horizontal plate 310 is fastened in the vertical direction, and the fastening member penetrating the lower part of the vertical member 200 and the vertical plate 320 in the left and right directions. It is preferred to be fastened.

The horizontal member 100, the vertical member 200, and the inclined member 300 are provided in pairs so as to be symmetrical about the pier 20, and the pair of horizontal members 100 are steel bars 50. It is preferred to be interconnected by.

As shown in FIG. 1, the horizontal member 100, the vertical member 200, and the inclined member 300 constituting the peer bracket are preferably installed to be symmetrical about the piers 20. In this configuration, the load of the bridge upper structure applied to the horizontal member 100 is transmitted to the vertical member 200 through the inclined member 300, and the load of the bridge upper structure transferred to the vertical member 200 is the bridge 20 Since the pier is applied to be symmetrical with respect to the center, the bridge 20 can be prevented from being damaged while being inclined to any one side.

In addition, the pair of horizontal members 100 provided to be symmetric with respect to the center of the piers 20 are connected to each other by a steel bar 50, as shown in FIG. As such, when the pair of horizontal members 100 are connected to the steel rods 50, the horizontal members 100 may be prevented from being arbitrarily drawn out from the bracket inlet grooves 21 formed in the piers 20.

FIG. 5 is data comparing a conventional peer bracket and a peer bracket according to an embodiment of the present invention. FIG. 5A is a view illustrating a state where each peer bracket is installed in a piers, and FIG. FIG. 5C is a diagram showing the vertical stress distribution of each peer bracket, and FIG. 5C is a diagram showing the bending stress distribution of each peer bracket.

As shown in Figure 5a, the conventional peer bracket (A) is fixed to the horizontal beam and the vertical beam simply by fastening members such as bolts, the peer bracket (B) according to the present invention is the horizontal member and the vertical member pin It is fixed to the member and installed in the piers.

The stress distribution formed on the vertical beam and the vertical member by the load after applying the same load to the horizontal beam and the horizontal member in this state is as follows.

In the case of the vertical stress distribution formed on the vertical beam and the vertical member, as shown in FIG. 5B, a larger vertical load is applied to the peer bracket B according to the present invention as compared with the conventional peer bracket A. FIG. You can see that. However, the difference is not great, and despite the stress distribution, the vertical member can effectively support the vertical load despite the stress distribution.

In the case of the vertical stress and the bending stress distribution of the vertical member formed due to the moment, as shown in Figure 5c, the conventional peer bracket (A) is applied a very large moment on the top of the vertical beam, while the peer bracket (B) of the present invention ) Can be seen that no moment is applied to the top of the vertical member.

Of course, even in the case of the peer bracket (B) of the present invention, the stress distribution by the moment is generated toward the lower portion of the vertical member, but the size is very small as about 1/10 compared to the stress distribution formed in the conventional peer bracket (A) You can check it.

Therefore, since the peer bracket B according to the present invention is not affected by the moment generated by the load of the bridge upper structure, the stability is improved compared to the conventional peer bracket A, and it is assumed that the same vertical load is applied. The use of a peer bracket B of a smaller size than that of the peer bracket A has the advantage that the vertical load can be effectively supported.

As mentioned above, although this invention was demonstrated in detail using the preferable embodiment, the scope of the present invention is not limited to a specific embodiment, Comprising: It should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

10: main girder 20: piers
30: pin member 40: fastening member
50: steel bar 100: horizontal member
110: inner plate 200: vertical member
210: outer plate 300: inclined member

Claims (8)

A horizontal member fixedly inserted into the bracket inlet groove formed in the pier so as to support the main girder used in the mobile scaffolding method;
A vertical member connected downwardly to one side of the horizontal member;
An inclined member connecting the other side of the horizontal member and the lower portion of the vertical member to transfer the load of the bridge upper structure applied to the horizontal member to the vertical member;
Including;
The horizontal member is the main girder support peer bracket, characterized in that rotatable around one side of the horizontal member when the load of the bridge upper structure is applied. The method of claim 1,
One side of the horizontal member is formed with an inner plate extending downward,
One side of the vertical member is formed with a pair of outer plates extending upward to be located on both sides of the inner plate,
Peer bracket for supporting the main girder, characterized in that the outer plate and the inner plate is fixed by a pin member. The method of claim 2,
The outer plate and the inner plate is formed with a pin hole through which the pin member can pass,
The girder bracket for supporting the main girder is provided with a fastening member penetrating the outer plate and the inner plate at the same time around the pinhole. The method of claim 3,
The inner plate is provided in plurality in the width direction of the horizontal member,
The outer plate is a main girder support peer bracket, characterized in that each provided on both sides of the plurality of inner plate. The method of claim 1,
The vertical member is a main girder support peer bracket, characterized in that the flat plate or strand. The method of claim 1,
One end of the inclined member is provided with a horizontal plate parallel to the horizontal member,
Peer bracket for supporting the main girder, characterized in that the fastening member for penetrating the other side of the horizontal member and the horizontal plate at the same time. The method of claim 1,
The other end of the inclined member is provided with a vertical plate parallel to the vertical member,
Peer bracket for supporting the main girder, characterized in that the fastening member for penetrating the lower portion of the vertical member and the vertical plate at the same time. The method of claim 1,
The horizontal member, the vertical member, the inclined member is provided in pairs to be symmetrical about the pier,
A pair of said horizontal member is the main girder support peer bracket characterized in that interconnected by a steel bar.
KR1020110035079A 2011-04-15 2011-04-15 Pier bracket supporting main girder used in movable scaffolding system KR20120117364A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103628413A (en) * 2013-12-11 2014-03-12 山东省路桥集团有限公司 Device and method for dismantling inner side slip die carrier after closure of separated bridges in intertidal zone
CN105839548A (en) * 2016-03-23 2016-08-10 中铁局集团有限公司 Segment splicing box girder erection and construction technology based on descending bridge girder erection machine
CN106939557A (en) * 2017-05-11 2017-07-11 中铁第五勘察设计院集团有限公司 A kind of pin-connected panel bracket casting platform of brace support
CN107012795A (en) * 2017-05-22 2017-08-04 中国铁建大桥工程局集团有限公司 A kind of continuous bridge pre-pressing bracket device and its construction method
CN108103956A (en) * 2017-12-21 2018-06-01 中铁三局集团华东建设有限公司 The construction method of cantilever casting beam end bay battered leg
CN108842628A (en) * 2018-07-09 2018-11-20 广西长长路桥建设有限公司 In conjunction with the construction method of anchor ear and the non-floor-bracket of Bailey beam cast-in-situ box girder
CN108978482A (en) * 2018-08-23 2018-12-11 中国五冶集团有限公司 The pin-connected panel support frame of circle pier capping beam is with its installation method
CN114059450A (en) * 2021-07-30 2022-02-18 山东固特邦土木科技有限公司 Bridge maintenance scaffold and method
CN114657881A (en) * 2022-03-24 2022-06-24 中铁大桥局第七工程有限公司 Bridge assembly platform structure

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103628413B (en) * 2013-12-11 2015-09-16 山东省路桥集团有限公司 Inner side sliding mold frame detaching device and method after the separate type closure of Coastal Area
CN103628413A (en) * 2013-12-11 2014-03-12 山东省路桥集团有限公司 Device and method for dismantling inner side slip die carrier after closure of separated bridges in intertidal zone
CN105839548B (en) * 2016-03-23 2017-12-19 中铁一局集团有限公司 Section assembling box beam erection construction technology based on down-type bridge-erecting machine
CN105839548A (en) * 2016-03-23 2016-08-10 中铁局集团有限公司 Segment splicing box girder erection and construction technology based on descending bridge girder erection machine
CN106939557B (en) * 2017-05-11 2019-01-22 中铁第五勘察设计院集团有限公司 A kind of pin-connected panel bracket casting platform of brace support
CN106939557A (en) * 2017-05-11 2017-07-11 中铁第五勘察设计院集团有限公司 A kind of pin-connected panel bracket casting platform of brace support
CN107012795A (en) * 2017-05-22 2017-08-04 中国铁建大桥工程局集团有限公司 A kind of continuous bridge pre-pressing bracket device and its construction method
CN108103956A (en) * 2017-12-21 2018-06-01 中铁三局集团华东建设有限公司 The construction method of cantilever casting beam end bay battered leg
CN108842628A (en) * 2018-07-09 2018-11-20 广西长长路桥建设有限公司 In conjunction with the construction method of anchor ear and the non-floor-bracket of Bailey beam cast-in-situ box girder
CN108978482A (en) * 2018-08-23 2018-12-11 中国五冶集团有限公司 The pin-connected panel support frame of circle pier capping beam is with its installation method
CN114059450A (en) * 2021-07-30 2022-02-18 山东固特邦土木科技有限公司 Bridge maintenance scaffold and method
CN114059450B (en) * 2021-07-30 2023-12-05 山东固特邦土木科技有限公司 Bridge maintenance scaffold and method thereof
CN114657881A (en) * 2022-03-24 2022-06-24 中铁大桥局第七工程有限公司 Bridge assembly platform structure
CN114657881B (en) * 2022-03-24 2024-02-27 中铁大桥局第七工程有限公司 Bridge assembly platform structure

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