CN103938556B - Concrete T-shaped cross section beam bridge Space Double K word supports horizontal intensifier - Google Patents
Concrete T-shaped cross section beam bridge Space Double K word supports horizontal intensifier Download PDFInfo
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- CN103938556B CN103938556B CN201410178285.8A CN201410178285A CN103938556B CN 103938556 B CN103938556 B CN 103938556B CN 201410178285 A CN201410178285 A CN 201410178285A CN 103938556 B CN103938556 B CN 103938556B
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Abstract
A kind of concrete T-shaped cross section beam bridge Space Double K word supports horizontal intensifier, and comprise the stull be installed between the adjacent water chestnut of T section beam bridge, the central authorities of stull are provided with main junction plate; Described main junction plate in the vertical direction is fixed with perpendicular one end of supportting, and the other end of perpendicular support is fixed on the intersection of water chestnut and top board; Main junction plate is fixed with one end of horizontal brace in the horizontal direction, and the other end of horizontal brace is fixed on the intersection bottom water chestnut and diaphragm.The present invention strengthens the lateral ties of concrete T-shaped cross section beam bridge by adopting the support of Space Double K word; by vertical K word support, top board is supported on the one hand; by horizontal K word support, original concrete diaphragm is supported on the other hand; make the present invention and original bridge acting in conjunction; reduce the stressed of concrete diaphragm when loaded vehicle is passed a bridge; serve protective effect, and make stability under loading, thus effectively prevent the generation of cracking.
Description
Technical field
The present invention relates to the lateral ties intensifier of the many beam bridges in a kind of concrete T-shaped cross section, be specifically related to a kind of concrete T-shaped cross section beam bridge Space Double K word and support horizontal intensifier.
Background technology
The beam bridge that T-shaped beam bridge is is major bearing structures with T-shaped beam.Prestressed concrete T tee section beam bridge due to its easy construction, applicability is strong, cost is reasonable, be widely used in China.And in recent years, its superstructure particularly lateral ties part cracking, infiltration, even rupture ([1] Xing Lili that happens occasionally, Chang Zhong. domestic recent bridge collapse analysis of cases and enlightenment [J], Fujian is built, and 2011 (9): 27-28; [2] Liu Yuan, horse flies .T beam bridge diaphragm disease less to the stressed impact analysis [J] of full-bridge, highway communication science and technology, 2012 (4): 38-40; [3] Lv Yuxia, Liu Yanhai. diaphragm to the impact analysis [J] of the stressed behavior of many main beam structures, Lanzhou Jiaotong University's journal, 2004,23 (1): 38-42), cause the attention of engineering circles.Existing countermeasure many from crack treatment, design the aspects such as stressed improvement ([4] Wen Yong, Liu Dejun. diaphragm on the impact [J] of Simple T-Girders lateral dynamics characteristic, Information, 2011 (1): 29-31; [5] Liu Runyang, the different connection status of T beam diaphragm is on the impact [J] of main beam stress, railway construction, 2009 (3): 46-48), the intensifier etc. for lateral ties is participated in collaborative work directly, is improved the correlative study shortages such as the stressed device of original structure, and the measure taked at present is that simple steel plate connects ([6] Li Zhida, Li Qilin, Li Yunyu. simple T beam bridge lateral ties and reinforcing [J], University Of Xiangtan's natural science journal
2010,32(3):39-43；[7]AbendrothR.E.,KlaiberF.W.,ShaferM.W.
Diaphragmeffectivenesssinprestressed-concretegirderbridg es, JournalofStructuralEngineering, 1995,121 (9): 1352-1369), and only study in test conditions, be not yet applied in the reinforcing of built bridge.
Summary of the invention
The object of the invention is to for above-mentioned defect of the prior art, a kind of lateral ties intensity that can improve built bridge is provided, reduce the stressed of original diaphragm, the concrete T-shaped cross section beam bridge Space Double K word effectively preventing to ftracture supports horizontal intensifier.
To achieve these goals, the technical solution used in the present invention is: comprise the stull be installed between the adjacent water chestnut of T section beam bridge, and the central authorities of stull are provided with main junction plate;
Described main junction plate in the vertical direction is fixed with perpendicular one end of supportting, and the other end of perpendicular support is fixed on the intersection of water chestnut and top board; Main junction plate is fixed with one end of horizontal brace in the horizontal direction, and the other end of horizontal brace is fixed on the intersection bottom water chestnut and diaphragm.
Described water chestnut is respectively arranging embedded board with the junction of perpendicular support, diaphragm in the junction with horizontal brace with the junction of stull, top board;
Described stull, perpendicular support, to be connected by junction plate between horizontal brace with embedded board.
Described embedded board adopts concrete external surface epoxy bond steel plate, and it is fixing to adopt expansion bolt to pressurize.
Described stull adopts angle steel with perpendicular support, and horizontal brace adopts steel plate.
Described main junction plate and stull, perpendicularly support, between horizontal brace, between embedded board and junction plate, and junction plate and stull, erect and support, all adopt between horizontal brace and to weld or bolt is connected.
Compared with prior art; the present invention strengthens the lateral ties of concrete T-shaped cross section beam bridge by adopting the support of Space Double K word; by vertical K word support, top board is supported on the one hand; by horizontal K word support, original concrete diaphragm is supported on the other hand; make the present invention and original bridge acting in conjunction, reduce the stressed of concrete diaphragm when loaded vehicle is passed a bridge, serve protective effect; and make stability under loading, thus effectively prevent the generation of cracking.Found by test on the T section beam bridge of main span 40m: under live loading, in original structure span centre lower edge, diaphragm stress is 1.674MPa, be 1.37MPa after adopting the present invention to strengthen, reduction amplitude is 18.2%; Original structure span centre lower rim diaphragm stress is 0.572MPa, and be 0.463MPa after adopting the present invention to strengthen, reduction amplitude is 19.1%; In original structure 1/3L lower edge, diaphragm stress is 0.603MPa, and be 0.511MPa after adopting the present invention to strengthen, reduction amplitude is 15.3%; Original structure 1/3L lower rim diaphragm stress is 0.223MPa, and be 0.219MPa after adopting the present invention to strengthen, reduction amplitude is 1.8%.Under loaded vehicle effect, after adopting the present invention, original diaphragm lower edge tension stress level reduces by 19%; And by finite element analysis, adopt the present invention can make the stressed obvious reduction of former diaphragm when temperature is elevated.
Further, the present invention, by installing embedded board in the relevant position of bridge, and to be connected with embedded board by junction plate, thus is fixed on bridge and supports, and has better ability to bear.
Optimize, stull of the present invention adopts angle steel with perpendicular support, and angle steel in use has good solderability, plastic strain performance and larger mechanical strength, and thus supporting effect is more remarkable.
Optimize, embedded board of the present invention adopts concrete external surface epoxy bond steel plate fixing by expansion bolt pressurization, and adhesive strength is higher, and has excellent flexility, can strengthen stress-bearing capability.
Accompanying drawing explanation
Fig. 1 overall structure schematic diagram of the present invention;
Fig. 2 the present invention vertical K word support structure schematic diagram;
Fig. 3 the present invention horizontal K word support structure schematic diagram;
In accompanying drawing: 1. stull; 2. embedded board; 3. main junction plate; 4. junction plate; 5. perpendicular support; 6. horizontal brace.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1, the present invention includes the stull 1 be installed between the adjacent water chestnut of T section beam bridge, the central authorities of stull 1 are provided with main junction plate 3, and one end of main junction plate 3 in the vertical direction and perpendicular support 5 is fixed, and the other end of perpendicular support 5 is fixed on the intersection of water chestnut and top board; Main junction plate 3 is fixed with one end of horizontal brace 6 in the horizontal direction, and the other end of horizontal brace 6 is fixed on the intersection bottom water chestnut and diaphragm.Wherein, stull 1 and perpendicular support 5 adopt angle steel, and horizontal brace 6 adopts steel plate.
See Fig. 2,3, water chestnut of the present invention is respectively arranging embedded board 2 with the junction of perpendicular support 5, diaphragm in the junction with horizontal brace 6 with the junction of stull 1, top board, and embedded board 2 adopts concrete external surface epoxy bond steel plate, and it is fixing to adopt expansion bolt to pressurize; Stull 1, perpendicular support 5, to be connected by junction plate 4 between horizontal brace 6 with embedded board 2.Wherein, between main junction plate 3 and stull 1, perpendicular support 5, horizontal brace 6, between embedded board 2 and junction plate 4, and junction plate 4 to weld or bolt is connected with all adopting between stull 1, perpendicular support 5, horizontal brace 6.
The present invention is connected to form by the main junction plate of central authorities primarily of vertical and horizontal direction two groups of K word supports, ensures the stability that collaborative work machine is stressed.
Installation steps of the present invention:
The first step, embedded board is located, by relevant position concrete dabbing;
Second step, installs the first embedded board 2, in T back plate and the punching of water chestnut relevant position, notes avoiding reinforcing bar, adopts epoxy resin to paste and adopts chemical bolt or expansion bolt pressurization to fix;
3rd step, installs perpendicular support 5, after adjustment angle, installs central main junction plate 3;
4th step, installs stull 1, suitably adjusts angle, adopts high-strength bolt that second embedded board 6 at the main junction plate 3 of itself and central authorities and water chestnut place is connected;
5th step, installs the K word support of horizontal direction, adopts high-strength bolt that horizontal brace 7 is connected with the 3rd embedded board 8 and central main junction plate 3.
6th step, whole support member connects inspection, high-strength bolt is fastening puts in place, completes the support of Space Double K word and installs.
Table 1 be under live loading intensifier for the impact (unit: MPa) of diaphragm stress;
Associative list 1 data find, under live loading, in original structure span centre lower edge, diaphragm stress is 1.674MPa, and be 1.37MPa after adopting the present invention to strengthen, reduction amplitude is 18.2%; Original structure span centre lower rim diaphragm stress is 0.572MPa, and be 0.463MPa after adopting the present invention to strengthen, reduction amplitude is 19.1%; In original structure 1/3L lower edge, diaphragm stress is 0.603MPa, and be 0.511MPa after adopting the present invention to strengthen, reduction amplitude is 15.3%; Original structure 1/3L lower rim diaphragm stress is 0.223MPa, and be 0.219MPa after adopting the present invention to strengthen, reduction amplitude is 1.8%.
As can be seen here, the present invention can improve the lateral ties intensity of built bridge, reduces the stressed of original diaphragm, and then effectively prevents cracking from occurring.
Claims (3)
1. a concrete T-shaped cross section beam bridge Space Double K word supports horizontal intensifier, it is characterized in that: comprise the stull (1) be installed between the adjacent water chestnut of T section beam bridge, the central authorities of stull (1) are provided with main junction plate (3);
Described main junction plate (3) in the vertical direction is fixed with perpendicular one end of supportting (5), and the other end of perpendicular support (5) is fixed on the intersection of water chestnut and top board; Main junction plate (3) is fixed with one end of horizontal brace (6) in the horizontal direction, and the other end of horizontal brace (6) is fixed on the intersection bottom water chestnut and diaphragm;
Described water chestnut is respectively arranging embedded board (2) with the junction of perpendicular support (5), diaphragm in the junction with horizontal brace (6) with the junction of stull (1), top board;
Described stull (1), perpendicular support (5), pass through junction plate (4) between horizontal brace (6) with embedded board (2) and be connected;
Described main junction plate (3) and stull (1), perpendicularly support between (5), horizontal brace (6), between embedded board (2) and junction plate (4), and junction plate (4) and stull (1), perpendicular support all to adopt between (5), horizontal brace (6) to weld or bolt is connected.
2. concrete T-shaped cross section according to claim 1 beam bridge Space Double K word supports horizontal intensifier, it is characterized in that: described embedded board (2) adopts concrete external surface epoxy bond steel plate, and it is fixing to adopt expansion bolt to pressurize.
3. concrete T-shaped cross section according to claim 1 beam bridge Space Double K word supports horizontal intensifier, it is characterized in that: described stull (1) support (5) adopt angle steel, horizontal brace (6) employing steel plate with perpendicular.
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| CN201410178285.8A CN103938556B (en) | 2014-04-29 | 2014-04-29 | Concrete T-shaped cross section beam bridge Space Double K word supports horizontal intensifier |
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| CN103938556B true CN103938556B (en) | 2016-02-24 |
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| CN108517793B (en) * | 2018-05-24 | 2023-09-01 | 江苏梦联桥科技有限公司 | Assembled transverse connection reinforcing structure of combined T-beam bridge and reinforcing method thereof |
| CN110735387A (en) * | 2019-11-04 | 2020-01-31 | 河南省交通规划设计研究院股份有限公司 | Transverse connection device for small box girders of bridge and construction method thereof |
| CN113512930A (en) * | 2021-07-05 | 2021-10-19 | 山西省交通科技研发有限公司 | Transverse reinforcing structure and construction method for assembled small box girder |
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| JPH07138916A (en) * | 1993-11-12 | 1995-05-30 | Topy Ind Ltd | Inspection passage made of aluminum |
| JP2007327255A (en) * | 2006-06-08 | 2007-12-20 | Nippon Steel Corp | Fatigue-resistant steel floor slab |
| CN201046891Y (en) * | 2007-04-23 | 2008-04-16 | 梁耀荣 | Rising frame of self-elevating tower crane |
| KR101004795B1 (en) * | 2008-04-14 | 2011-01-04 | (주)안풍건설 | Method for raising a bridge and the raising structure there of |
| KR101252706B1 (en) * | 2010-08-17 | 2013-04-10 | 주식회사 휴먼브릿지 | Bridge construction method to adjust curvature for psc t-girder |
| CN103741577B (en) * | 2013-12-30 | 2015-08-12 | 郑州大学 | A kind of T-shaped beam bridge and construction method thereof that bottom lateral bracing is set |
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