KR20120117364A - Pier bracket supporting main girder used in movable scaffolding system - Google Patents
Pier bracket supporting main girder used in movable scaffolding system Download PDFInfo
- 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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- South Korea
- Prior art keywords
- bracket
- vertical
- horizontal
- main girder
- horizontal member
- Prior art date
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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
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
As shown in FIG. 1, the main girder support peer bracket according to the present embodiment includes a
The
The
As described above, the
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
In this configuration, since only the vertical load of the upper structure of the bridge is applied to the
One side of the
In this embodiment, the
The
As shown in FIG. 2, a
The
As shown in FIG. 3, the
Figure 4 is a front view showing another embodiment of the main girder support peer bracket according to the present invention.
The
The
One end of the
As shown in FIG. 1,
The
As shown in FIG. 1, the
In addition, the pair of
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 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.
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 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 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 vertical member is a main girder support peer bracket, characterized in that the flat plate or strand.
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 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 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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020110035079A KR20120117364A (en) | 2011-04-15 | 2011-04-15 | Pier bracket supporting main girder used in movable scaffolding system |
Applications Claiming Priority (1)
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KR1020110035079A KR20120117364A (en) | 2011-04-15 | 2011-04-15 | Pier bracket supporting main girder used in movable scaffolding system |
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KR20120117364A true KR20120117364A (en) | 2012-10-24 |
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KR1020110035079A KR20120117364A (en) | 2011-04-15 | 2011-04-15 | Pier bracket supporting main girder used in movable scaffolding system |
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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 |
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2011
- 2011-04-15 KR KR1020110035079A patent/KR20120117364A/en not_active Application Discontinuation
Cited By (14)
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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 |
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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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