CN112144376A - Semi-fixed personnel passageway for bridge expansion joint - Google Patents
Semi-fixed personnel passageway for bridge expansion joint Download PDFInfo
- Publication number
- CN112144376A CN112144376A CN202010981188.8A CN202010981188A CN112144376A CN 112144376 A CN112144376 A CN 112144376A CN 202010981188 A CN202010981188 A CN 202010981188A CN 112144376 A CN112144376 A CN 112144376A
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- Prior art keywords
- fixed
- bottom plate
- semi
- bridge section
- bridge
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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
- E01D19/00—Structural or constructional details of bridges
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to 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
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a semi-fixed channel for a bridge expansion joint, which comprises an evacuation channel bottom plate, wherein one end of the evacuation channel bottom plate is reliably connected with a fixed bearing platform fixed on a bridge leading section by bolts, the middle part of the evacuation channel bottom plate is supported by supporting rollers to prevent sinking and collapse, the other end of the evacuation channel bottom plate freely slides in a limiting sliding structure fixed on a main bridge section, and folding handrails and safety handrails are fixed on two sides of the semi-fixed channel. The evacuation channel bottom plate is used as a pedestrian floor, and the folding handrails and the safety handrails prevent the patrol personnel from carelessly falling under the bridge. The invention realizes the expansion and contraction of two ends of the bridge expansion joint along with the temperature change in four seasons, and simultaneously can effectively solve the safe passing and evacuating problems of inspection personnel of electric or other equipment. The invention is safe, reliable, simple and effective, has high cost performance, and has higher practical and popularization values in the construction of similar long and large bridges.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a semi-fixed passage for a bridge expansion joint, which is an inspection personnel passing and evacuating passage device arranged between bridge body box girders at two ends of the bridge expansion joint and communicated with each other.
Background
The design length of bridges which span big rivers and are built at present in China on the water surface is 1.5km or more, the bridge profession can consider that the bridges can stretch out and draw back along with the change of the temperature in four seasons in the design, usually, an expansion joint is reserved between a main bridge and an approach bridge box girder, and the expansion range of the expansion joint is about 0.3-1.7 m. Because the electrical loads of road, landscape lighting, dehumidifying equipment, bridge tower elevators and other equipment on the bridge in the box girder structure form are large, a transformer substation is usually additionally arranged in the box girder to meet the use requirements of the bridge. Although openable access doors are arranged at the bridge bodies at two ends of the bridge expansion joint, the inspection channels which are communicated with each other and used for passing and evacuating are not formed, and the requirements of related design specifications cannot be met. In order to achieve the purpose of ensuring the personal safety of other professional routing inspection personnel such as electricians, the invention provides the personnel routing inspection channel device communicated between the bridge body box girders at the two ends of the bridge expansion joint.
Disclosure of Invention
The invention aims to provide a semi-fixed passage for a bridge expansion joint, which can enable the bridge to be capable of flexibly and balancedly telescopic sliding at the expansion joint along with the change of the temperature in four seasons (the principle of expansion with heat and contraction with cold), so that the purpose of adapting to the temperature change of a bridge structure and establishing a pedestrian safety and routing inspection evacuation passage for connecting two ends of the bridge is achieved, and the personal safety of other professional routing inspection personnel such as electricians can be ensured.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a semi-fixed passageway for bridge expansion joint department, the bridge expansion joint is located between main bridge section and the approach bridge section, and its characterized in that is equipped with sparse door on main bridge section and approach bridge section respectively, semi-fixed passageway is including being located the sparse passageway bottom plate between main bridge section and the approach bridge section sparse door, and approach bridge section edge is provided with fixed cushion cap, and main bridge section sparse door lower part is fixed with spacing sliding structure, sparse passageway bottom plate one end and fixed cushion cap fixed connection, the other end and spacing sliding structure sliding connection, main bridge section edge still are equipped with supporting roller, sparse passageway bottom plate with supporting roller sliding connection, in order to prevent sink in sparse passageway bottom plate middle part and sink.
Furthermore, spacing sliding structure is fixed roller structure, including last gyro wheel and lower gyro wheel, goes up the gyro wheel and fixes in evacuation door below threshold both sides wall through the roller bearing respectively with lower gyro wheel, leaves the clearance between last gyro wheel and the lower gyro wheel, evacuation passageway bottom plate is located the clearance between last gyro wheel and the lower gyro wheel to can remove in this clearance.
Furthermore, the fixed bearing platform is connected with the approach bridge section through steel bolts or welding, and the evacuation channel bottom plate is connected with the fixed bearing platform through bolts.
Furthermore, the supporting rollers are fixed at the edge of the approach bridge section through triangular supports, the evacuation channel bottom plate can freely slide above the supporting rollers, and the width of the supporting rollers is matched with that of the evacuation channel bottom plate.
Further, the both sides of semi-fixed passageway are equipped with safety railing and folding railing, and folding railing is located the expansion joint top, and install respectively on main bridge section bottom plate and approach bridge section bottom plate at the both ends of folding railing, and the both sides of folding railing set up safety railing respectively, and the safety railing of both sides is fixed respectively on main bridge section bottom plate or approach bridge section bottom plate.
Furthermore, the minimum length of the evacuation channel bottom plate can meet the length that the bridge expansion joint does not fall off from the fixed roller when in maximum displacement, the width of the evacuation channel bottom plate is not less than 0.8m, and the widths of the rollers of the upper roller and the lower roller in the roller structure are matched with the width of the evacuation channel bottom plate and are not less than 0.8 m.
Furthermore, the folding handrail is welded by adopting metal or nonmetal materials or is connected to the main bridge section or the approach bridge section through bolts, and the telescopic length range of the folding handrail is at least 0.5 m-1.7 m.
Furthermore, the safety rail is made of metal or nonmetal materials and is connected to the main bridge section or the approach bridge section through welding or bolts.
Furthermore, the safety railing is made of steel pipes, the diameter of each steel pipe is not less than 25mm, and the thickness of each pipe wall is not less than 2.5 mm; the height of the safety rail is not less than 1.1 m.
The invention provides a passage device for passing and routing inspection evacuation of personnel at a bridge expansion joint, which has safe, reliable, simple, effective and higher cost performance, wherein the connection mode of two ends of a bridge adopts a semi-fixed sliding connection mode of the passage device, the expansion of each end of the bridge along with the temperature change in four seasons is not influenced, meanwhile, the problems of safe passing and evacuation of routing inspection personnel of electricians or other equipment can be effectively solved, and the personal safety of the routing inspection personnel is effectively ensured. The semi-fixed personnel passing and routing inspection evacuation channel device for the bridge expansion joint has higher practical value in the construction and maintenance of similar long and large bridges in future.
Drawings
Fig. 1 is a cross-sectional view of a bridge body and an evacuation passageway at two ends of a bridge expansion joint.
Fig. 2 is a cross-sectional view of the fixed roller.
Fig. 3 is a longitudinal sectional view of the fixed roller.
Fig. 4 is a cross-sectional view of the support roller.
Fig. 5 is a longitudinal sectional view of the support roller.
Fig. 6 is a top view of the fixed bolster.
Fig. 7 is a longitudinal sectional view of the fixed bolster.
Wherein: 1 is evacuation passageway bottom plate (steel), 2 is fixed gyro wheel structure, 21 is last gyro wheel, 22 is lower gyro wheel, 23 is the roller bearing, 3 is supporting roller, 31 is the gyro wheel, 32 is the A-frame, 4 is fixed cushion cap, 41 is that the fixed point is the electric welding point or the metal fixing bolt on the pontic bottom plate, 5 is folding railing, 6 is the safety barrier, 7 is main bridge section, 8 is the bridge section of leading.
Detailed Description
The invention is further described below with reference to the figures and examples.
The evacuation passageway device provided at the expansion joint of the bridge is shown in fig. 1. One end of the evacuation channel bottom plate 1 is reliably connected with the fixed bearing platform 4 through bolts, the middle part is supported by the supporting rollers 3 to prevent sinking and collapsing, and the other end freely slides in the limiting sliding structure. In this embodiment, the limiting sliding structure is a fixed roller structure 2.
The evacuation passageway floor 1 has a certain width and can be made of a material capable of reliably bearing the load of one or two persons and small tools, and the material can also be a metal or nonmetal material with strength and corrosion resistance. In the embodiment, the evacuation channel bottom plate 1 is made of steel plates with the width not less than 0.8m and the length not less than 5mm, and the evacuation channel bottom plate can be prevented from falling off from the fixed roller structure when the bridge expansion joint is in the maximum displacement.
The fixed roller structure 2 is composed of an upper roller 21 and a lower roller 22, and is reliably connected with a wall body through a roller 23 penetrating through the centers of the two rollers. The fixed rollers are embedded into the wall body and arranged at the doorsill of the evacuation door at the main bridge section, and the width of the rolling shaft 23 is matched with that of the evacuation channel bottom plate and is not less than 0.8m, and a margin is left in a proper degree. The diameter of the roller 23 is 10 cm.
In the present embodiment, the limit sliding structure is a fixed roller structure 2, and it should be understood by those skilled in the art that the limit sliding structure may also be other structures fixed at the lower part of the evacuation door at the main bridge segment, as long as the evacuation channel bottom plate 1 can slide freely therein.
The supporting rollers 3 are arranged at the edge of the main bridge section 7. The rollers 31 are reliably fixed on the approach bridge section through the triangular supports 32, the evacuation channel bottom plate 1 can freely slide above the approach bridge section, the width of the supporting rollers 3 is matched with that of the evacuation channel bottom plate 1, the supporting rollers are not less than 0.8m, and a margin is properly reserved. The diameter of the roller is the same as that of the fixed roller 2, and 10cm is selected.
The fixed bearing platform 4 is arranged at the edge of the bridge guiding section 8. The fixed bearing platform 4 is reliably connected with the approach bridge section through steel bolts 41 or welding. The evacuation channel bottom plate 1 is reliably connected with the fixed bearing platform through steel bolts 41. The spacing is suggested to be 10cm and two rows are provided.
The folding handrail 5 is made of metal material, and the height of the folding handrail is not less than 1.1 m. Two sides of the folding railing are reliably connected to the bottom plate of the main bridge section 7 and the bottom plate of the approach bridge section 8 through bolts or welding. The flexible joint has a flexible function, can be flexible along with deformation of the deformation seam, and the flexible size is at least kept between 0.5m and 1.7 m.
The safety barrier 6 is made of metal materials, the height of the safety barrier is not less than 1.1m, and the clear distance between the rod pieces of the safety barrier 6 is not more than 0.2m, so that the passing safety of electricians and other inspection personnel on the evacuation channel is ensured. Two sides of the safety rail 6 are connected to the bottom plate of the main bridge section 7 and the bottom plate of the approach bridge section 8 through bolts or welding.
The device is installed after the bridge body box girders at the two ends of a main bridge and an approach bridge are erected, a fixed bearing platform and a support roller are installed on a bottom plate of the bridge body box girders at the two ends of the main bridge and the approach bridge, the fixed roller is installed after the size is measured, then a steel plate slides into the fixed roller and is lapped on the support roller, the other side of the steel plate is fixed on the fixed bearing platform, and then a guardrail rail is installed, so that the simple, feasible and reliable personnel evacuation channel device is formed.
Claims (9)
1. The utility model provides a semi-fixed passageway for bridge expansion joint department, the bridge expansion joint is located between main bridge section and the approach bridge section, and its characterized in that is equipped with sparse door on main bridge section and approach bridge section respectively, semi-fixed passageway is including being located the sparse passageway bottom plate between main bridge section and the approach bridge section sparse door, and approach bridge section edge is provided with fixed cushion cap, and main bridge section sparse door lower part is fixed with spacing sliding structure, sparse passageway bottom plate one end and fixed cushion cap fixed connection, the other end and spacing sliding structure sliding connection, main bridge section edge still are equipped with supporting roller, sparse passageway bottom plate with supporting roller sliding connection, in order to prevent sink in sparse passageway bottom plate middle part and sink.
2. The semi-fixed type passage for the bridge expansion joint according to claim 1, wherein the limit sliding structure is a fixed roller structure comprising an upper roller and a lower roller, the upper roller and the lower roller are respectively fixed in two side walls of a threshold below the evacuation door through rollers, a gap is left between the upper roller and the lower roller, and the bottom plate of the evacuation passage is located in the gap between the upper roller and the lower roller and can move in the gap.
3. The semi-fixed tunnel as claimed in claim 1, wherein the fixed bearing platform is connected to the approach bridge section by steel bolts or welding, and the evacuation tunnel floor is connected to the fixed bearing platform by bolts.
4. The semi-fixed tunnel of claim 1, wherein the support rollers are fixed to the edge of the approach section by triangular brackets, and the width of the support rollers matches the width of the evacuation tunnel floor.
5. The semi-fixed passageway for bridge expansion joints according to claim 1, wherein the semi-fixed passageway is provided with a safety rail and a folding rail at two sides, the folding rail is located above the expansion joint, two ends of the folding rail are respectively installed on the main bridge section bottom plate and the approach bridge section bottom plate, the safety rail is respectively arranged at two sides of the folding rail, and the safety rails at two sides are respectively fixed on the main bridge section bottom plate or the approach bridge section bottom plate.
6. The semi-fixed tunnel according to claim 2, wherein the minimum length of the bottom plate of the evacuation tunnel satisfies a length that the bottom plate of the evacuation tunnel does not come off the fixed roller structure when the bridge expansion joint is maximally displaced, and the width of the bottom plate of the evacuation tunnel is not less than 0.8m, and the width of the rollers of the upper roller and the lower roller of the fixed roller structure is matched with the width of the bottom plate of the evacuation tunnel and is not less than 0.8 m.
7. A semi-fixed passageway at a bridge expansion joint as claimed in claim 5 wherein said folding rail is welded or bolted to the main or approach bridge section using metallic or non-metallic materials, and has a length of at least 0.5m to 1.7 m.
8. A semi-fixed gateway as claimed in claim 5 wherein the safety rail is made of metal or non-metal material and is welded or bolted to the main bridge section or the approach bridge section.
9. The semi-fixed passageway for the bridge expansion joint according to claim 8, wherein the safety rail is made of steel pipes, the diameter of each steel pipe is not less than 25mm, and the thickness of each pipe wall is not less than 2.5 mm; the height of the safety rail is not less than 1.1 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010981188.8A CN112144376A (en) | 2020-09-17 | 2020-09-17 | Semi-fixed personnel passageway for bridge expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010981188.8A CN112144376A (en) | 2020-09-17 | 2020-09-17 | Semi-fixed personnel passageway for bridge expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112144376A true CN112144376A (en) | 2020-12-29 |
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ID=73894104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010981188.8A Pending CN112144376A (en) | 2020-09-17 | 2020-09-17 | Semi-fixed personnel passageway for bridge expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112144376A (en) |
Citations (13)
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| CN201593160U (en) * | 2009-11-26 | 2010-09-29 | 广州大学 | Movable and telescopic passenger foot bridge |
| KR20120059838A (en) * | 2010-12-01 | 2012-06-11 | 사단법인 미래융합건설연구원 | Temporary bridge for middle and small size river |
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| CN204282205U (en) * | 2014-11-28 | 2015-04-22 | 大连市市政设计研究院有限责任公司 | A kind of Simple telescopic device being applied to pedestrian way of bridge shrinkage joint place |
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| CN106894334A (en) * | 2017-04-17 | 2017-06-27 | 中铁第四勘察设计院集团有限公司 | A kind of expansion gap device for large span magnetic floating traffic bridge |
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| CN209923762U (en) * | 2019-03-21 | 2020-01-10 | 李丽丽 | Public road bridge roof beam construction expansion joint connection structure |
| CN210177345U (en) * | 2019-04-30 | 2020-03-24 | 四川蓝海智能装备制造有限公司 | Movable support leg for inverted arch trestle |
| CN211079882U (en) * | 2019-07-31 | 2020-07-24 | 中铁磁浮交通投资建设有限公司 | Prefabricated assembly evacuation channel |
-
2020
- 2020-09-17 CN CN202010981188.8A patent/CN112144376A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201280895Y (en) * | 2008-06-20 | 2009-07-29 | 鄂咸良 | Railless electric straight-line door |
| CN201593160U (en) * | 2009-11-26 | 2010-09-29 | 广州大学 | Movable and telescopic passenger foot bridge |
| KR20120059838A (en) * | 2010-12-01 | 2012-06-11 | 사단법인 미래융합건설연구원 | Temporary bridge for middle and small size river |
| CN202298456U (en) * | 2011-09-30 | 2012-07-04 | 上海磁浮交通发展有限公司 | Large-displacement bridge telescoping device suitable for high-speed magnetic floatation traffic engineering |
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| CN207018747U (en) * | 2017-07-31 | 2018-02-16 | 北京康得通用设备有限公司 | A kind of adjustable guiding device up and down |
| CN108532454A (en) * | 2018-03-15 | 2018-09-14 | 南安市创培电子科技有限公司 | Highway-bridge Expansion Joints construct |
| CN209923762U (en) * | 2019-03-21 | 2020-01-10 | 李丽丽 | Public road bridge roof beam construction expansion joint connection structure |
| CN210177345U (en) * | 2019-04-30 | 2020-03-24 | 四川蓝海智能装备制造有限公司 | Movable support leg for inverted arch trestle |
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