CN202830788U - Supporting structure with beam fulcrum below bridge cantilever - Google Patents

Supporting structure with beam fulcrum below bridge cantilever Download PDF

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Publication number
CN202830788U
CN202830788U CN 201220527977 CN201220527977U CN202830788U CN 202830788 U CN202830788 U CN 202830788U CN 201220527977 CN201220527977 CN 201220527977 CN 201220527977 U CN201220527977 U CN 201220527977U CN 202830788 U CN202830788 U CN 202830788U
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CN
China
Prior art keywords
steel
channel
fulcrum
base
steel main
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220527977
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Chinese (zh)
Inventor
杨基好
踪高峰
吴强
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China Railway No 10 Engineering Group Co Ltd
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China Railway No 10 Engineering Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by China Railway No 10 Engineering Group Co Ltd filed Critical China Railway No 10 Engineering Group Co Ltd
Priority to CN 201220527977 priority Critical patent/CN202830788U/en
Application granted granted Critical
Publication of CN202830788U publication Critical patent/CN202830788U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a supporting structure with beam fulcrum below bridge cantilever, and belongs to the technical field of beam fulcrum reinforcement. The supporting structure with beam fulcrum below bridge cantilever comprises a steel abutment which is arranged under the bridge cantilever and contacts with the bridge cantilever, and a reinforced concrete seat (10) which is positioned on the lower portion of the steel abutment. The steel abutment comprises two channel steel main supports (7) installed vertically, top trays (2) connected on the top sides of the channel steel main supports (7), baseboards (3) connected at the bottom of the channel steel main supports (7). A plurality of ribbed steel boards are connected between the two channel steel main supports (7). A plurality of bratckes(8) are arranged between the top trays (2) and the channel steel main supports (7) and between the baseboard (3) and the channel steel main supports (7). The reinforced concrete seat(10)is connected with the baseboard (3) of the steel abutment through a n adjustable bolt (4) that is pre-buried in the reinforced concrete seat(10). The supporting structure with beam fulcrum below bridge cantilever is high in global stability. Change of displacement and sedimentation can be checked at any time in use and adjustment can be made in time. Due to the fact that construction difficulty is low, a plurality of labors are saved.

Description

Just beam fulcrum support structure under a kind of existing bridge outrigger base
Technical field
The utility model relates to a kind ofly reinforces the just braced structures of beam fulcrum under outrigger base when just the beam fulcrum is positioned on the existing bridge outrigger base, belong to just beam fulcrum reinforcing technique field.
Background technology
In railway, construction of the highway, often adopt pipe jacking method, and adopt the beam of constructing just to reinforce existing line as temporary structure.In jacking construction, construct sometimes just that the fulcrum of beam is positioned on the existing frame roof outrigger base, outrigger base is the weak part of framework, can't bear so large load.Be the framework weak part to be taked to set up large-area design of coupler scaffold support, vertical, the transverse bar spacing of scaffold are 25cm in the past, and adjustable shoring used at the scaffold top.Need expend a large amount of artificial when this braced structures is set up, difficulty of construction is large, speed is slow, high to the original ground requirement for bearing capacity, must disposable adjusting to the right place during scaffold building, in use have train by the time produce dynamic load and vibration, fastener and adjustable shoring have loosening phenomenon, overhaul but manually can't enter in the braced structures, very large potential safety hazard is arranged, and the construction safety coefficient is very low.
Summary of the invention
For the defects that exists in the prior art, the utility model provides under a kind of Stability Analysis of Structures, difficulty of construction is little, labor intensive is few, the easy to maintenance existing bridge outrigger base just beam fulcrum support structure.
The utility model is achieved by the following technical solution: just beam fulcrum support structure under a kind of existing bridge outrigger base, its special character is, it comprises the steel buttress that is located under the outrigger base and contacts with outrigger base and is located at the reinforced concrete footing that described steel props up pedestal, described steel buttress comprises two channel-section steel main braces that vertically arrange, be connected to the top board of channel-section steel main brace end face, be connected to the base plate of channel-section steel main brace bottom, between two channel-section steel main braces, be connected with some blocks of rib band steel plates, be equipped with several brackets between described top board and the channel-section steel main brace and between described base plate and the channel-section steel main brace, described reinforced concrete footing is connected with the base plate of described steel buttress by pre-buried adjusting bolt on it.
The utility model can the dead load of just beam and train by the time dynamic load be delivered to ground by the steel buttress, make the stressed transfer of outrigger base stressed by braced structures, guaranteed the just safety of beam fulcrum.
In order to guarantee that the steel buttress reliably contacts with outrigger base, reliably shift the inclined plane that the upper surface of described top board is complementary for the bottom surface with described outrigger base to guarantee the suffered load of outrigger base.
In order to guarantee the resistance to overturning of braced structures, the surface layer of described reinforced concrete footing disposes the reinforcing bar that spacing in length and breadth is 15cm.
The beneficial effects of the utility model are: the utility model is simple in structure, and resistance to overturning is high, can check at any time that in use its displacement and sedimentation change, and in time adjusts, and has effectively guaranteed traffic safety and personal safety, has greatly improved the construction safety coefficient.Adopt the utility model to carry out just beam fulcrum reinforcing, can save in a large number manually, greatly reducing construction cost.
Description of drawings
Fig. 1 is the structural representation of the utility model specific embodiment;
Fig. 2 is the A-A schematic diagram among Fig. 1;
Among the figure: 1, existing bridge outrigger base, 2, top board, 3, base plate, 4, adjusting bolt, 5, rib band steel plate, 6, rib band steel plate, 7, the channel-section steel main brace, 8, bracket, 9, the just beam of constructing, 10, concrete bed.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Shown in accompanying drawing 1-2, just be beam fulcrum support structure under a kind of existing bridge outrigger base, it comprises the steel buttress that is located at existing bridge outrigger base 1 time and contacts with outrigger base and is located at the reinforced concrete footing 10 that described steel props up pedestal.Described steel buttress comprises two channel-section steel main braces 7 that vertically arrange, be connected to the top board 2 of channel-section steel main brace 7 end faces, be connected to the base plate 3 of channel-section steel main brace 7 bottoms, wherein, two channel-section steel main braces 7 arrange face-to-face, be welded with some blocks of rib band steel plates 5 and some blocks of rib band steel plates 6 between two channel-section steel main braces 7, rib band steel plate 5 and rib band steel plate 6 link together two channel-section steel main braces 7 securely.Top board 2 and base plate 3 are steel plate, and its mode by welding is welded on respectively top and the bottom of channel-section steel main brace 7.All be welded with several brackets 8 between described top board 2 and the channel-section steel main brace 7 and between described base plate 3 and the channel-section steel main brace 7.Reinforced concrete footing 10 is the C25 reinforced concrete foundation, and its surface layer disposes that diameter is Φ 16, spacing is the reinforcing bar of 15cm in length and breadth.Also be embedded with adjusting bolt 4 on reinforced concrete footing 10, the base plate 3 of steel buttress is connected on the reinforced concrete footing 10 by adjusting bolt 4.
In order to guarantee that the steel buttress reliably contacts with outrigger base, the inclined plane that the upper surface of described top board 2 is complementary for the bottom surface with described outrigger base.
When the utility model is constructed at the scene, should advance at the scene first repeatedly measurement, check the location, the position of Accurate Measurement steel buttress and the height of steel buttress must guarantee on the outrigger base that just beam props up dot center to overlap with steel buttress center of effort under the outrigger base.Then build reinforced concrete footing 10 and pre-buried adjusting bolt 4, simultaneously two channel-section steel main braces 1 of well cutting, top board 2, base plate 3, bracket 8, rib band steel plate 5 and rib band steel plate 6.Treat that base intensity reaches 100%, on seating plane, accurately make steel buttress position, place base plate 3, hold up on base plate 3 two channel-section steel main braces 1 and the location, welding first rib band steel plate 5 fixes two channel-section steels, welding top plate 2 again, welding rib band steel plate 6, bracket steel plate 8, make top board 2 and outrigger base bottom surface be close to closely knit by the nut of adjusting adjusting bolt 4, steel sheet plug packing with 1~5mm thickness in base plate and reinforced concrete footing slit is real, makes load be directly delivered to base to ground by the steel buttress.
The utility model in use, just the dead load of beam and train by the time dynamic load be delivered to ground by the utility model, make the stressed transfer of outrigger base stressed by braced structures, guaranteed the just safety of beam fulcrum.
The utility model in use, can make regular check on train by the dynamic load that produces and vibration to the situation of change of the displacement of steel buttress and sedimentation, find to change the in time finishing of transfiniting.
The utility model is simple in structure, it is simple, with low cost to draw materials conveniently, make, has higher practicality, its solved the difficulty of construction that exists in the existing just beam fulcrum reinforcing technique large, expend a large amount of artificial, structural instabilities, can't overhaul and problem that potential safety hazard is large, can replace existing employing design of coupler scaffold to make the technical scheme that just beam fulcrum is reinforced fully.
Other parts in the utility model adopt prior art, do not repeat them here.

Claims (3)

1. just beam fulcrum support structure under the existing bridge outrigger base, it is characterized in that: comprise the steel buttress that is located under the outrigger base and contacts with outrigger base and be located at the reinforced concrete footing (10) that described steel props up pedestal, described steel buttress comprises two channel-section steel main braces (7) that vertically arrange, be connected to the top board (2) of channel-section steel main brace (7) end face, be connected to the base plate (3) of channel-section steel main brace (7) bottom, between two channel-section steel main braces (7), be connected with some blocks of rib band steel plates, be equipped with several brackets (8) between described top board (2) and the channel-section steel main brace (7) and between described base plate (3) and the channel-section steel main brace (7), described reinforced concrete footing (10) is connected with the base plate (3) of described steel buttress by pre-buried adjusting bolt (4) on it.
2. just beam fulcrum support structure under the existing bridge outrigger base according to claim 1 is characterized in that: the inclined plane that the upper surface of described top board (2) is complementary for the bottom surface with described outrigger base.
3. just beam fulcrum support structure under the existing bridge outrigger base according to claim 1 and 2 is characterized in that: the surface layer of described reinforced concrete footing (10) disposes the reinforcing bar that spacing in length and breadth is 15cm.
CN 201220527977 2012-10-16 2012-10-16 Supporting structure with beam fulcrum below bridge cantilever Expired - Fee Related CN202830788U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220527977 CN202830788U (en) 2012-10-16 2012-10-16 Supporting structure with beam fulcrum below bridge cantilever

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220527977 CN202830788U (en) 2012-10-16 2012-10-16 Supporting structure with beam fulcrum below bridge cantilever

Publications (1)

Publication Number Publication Date
CN202830788U true CN202830788U (en) 2013-03-27

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CN (1) CN202830788U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912739A (en) * 2012-10-16 2013-02-06 中铁十局集团有限公司 Supporting structure for temporary beam pivot below existing bridge cantilever plate
CN104328748A (en) * 2014-11-18 2015-02-04 中铁大桥局武汉桥梁特种技术有限公司 Reinforcing structure for corbel end of cantilever girder bridge and mounting method for reinforcing structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912739A (en) * 2012-10-16 2013-02-06 中铁十局集团有限公司 Supporting structure for temporary beam pivot below existing bridge cantilever plate
CN102912739B (en) * 2012-10-16 2015-08-26 中铁十局集团有限公司 The construction method of just beam fulcrum support structure under a kind of existing bridge outrigger base
CN104328748A (en) * 2014-11-18 2015-02-04 中铁大桥局武汉桥梁特种技术有限公司 Reinforcing structure for corbel end of cantilever girder bridge and mounting method for reinforcing structure

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130327

Termination date: 20151016

EXPY Termination of patent right or utility model