CN113235463A - Self-locking creeping limiting method for curved bridge - Google Patents
Self-locking creeping limiting method for curved bridge Download PDFInfo
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- CN113235463A CN113235463A CN202110519421.5A CN202110519421A CN113235463A CN 113235463 A CN113235463 A CN 113235463A CN 202110519421 A CN202110519421 A CN 202110519421A CN 113235463 A CN113235463 A CN 113235463A
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention discloses a self-locking creeping limiting method for a curved bridge. The transverse fixing device consists of a transverse fixing steel backing plate welded on the end beam anchoring steel plate, a stiffening steel plate and a connecting steel plate; the longitudinal fixing device consists of a longitudinal fixing steel base plate welded on the end beam anchoring steel plate; indulge horizontal spacing integrative stop device by weld in bracket anchor steel sheet, bracket anchor steel sheet and bent cap anchor steel sheet welded connection to adopt anchor connecting steel sheet to strengthen the connection, wherein steel bracket indulges horizontal stop device and comprises vertical spacing steel sheet, horizontal spacing steel backing plate, vertical spacing stiffening steel sheet, horizontal spacing stiffening steel sheet, the connecting steel sheet of steel bracket. The invention does not damage the main structure of the bridge, has strong capability of resisting the longitudinal and transverse deflection of the bridge, is definite in stress and improves the durability of the bridge.
Description
Technical Field
The invention belongs to the technical field of bridge engineering, and particularly relates to a self-locking creeping limiting method for a curved bridge.
Background
The curved bridge has beautiful line shape and good adaptability to the complex terrains in mountainous areas and the staggered line shape in cities, so that the curved bridge is widely applied to highway bridges and urban bridges. The phenomenon is moved in discovery curve bridge ubiquitous among the bridge operation, further leads to diseases such as the dog damage, the expansion joint is crowded died, climbs to move serious and the skew original design position of bridge appears even, and the support damages, influences the normal use of bridge, harms bridge safety even.
The conventional measures for reducing the lateral displacement include that support arrangement is optimized, an elastic lateral support is arranged at a shockproof stop block, the lateral displacement can be only reduced but cannot be effectively limited by optimizing the support arrangement, the bridge creeping can still be caused by long-time lateral displacement accumulation, and the problem of creeping of a curved bridge cannot be fundamentally solved; the elastic lateral support is arranged at the shockproof stop block, so that the lateral climbing of the bridge can be effectively limited, but the performance requirement on the stop block is higher, the existing operation bridge stop block built in the early stage generally cannot meet the stress requirement, the space is narrow, and the construction of installing the lateral support after reinforcing the stop block is difficult.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a self-locking creeping limiting method for a curved bridge.
The technical scheme is as follows:
a self-locking creeping limiting method for a curved bridge uses a self-locking creeping limiting device for the curved bridge, and comprises the following steps: end crossbeam 1, girder 2, bent cap 3, end crossbeam anchor steel sheet 4, bent cap anchor steel sheet 5, bracket anchor steel sheet 6, longitudinal fixing device's steel backing plate 7, longitudinal spacing steel sheet 8 of steel bracket, transverse fixing device steel backing plate 9, transverse spacing steel backing plate 10 of steel bracket, transverse spacing damping rubber backing plate 11, longitudinal spacing damping rubber backing plate 12, anchor connecting steel sheet 13, transverse fixing device stiffening steel sheet 14, transverse fixing device connecting steel sheet 15, steel bracket connecting steel sheet 16, longitudinal spacing stiffening steel sheet 17 of steel bracket, transverse spacing stiffening steel sheet 18 of steel bracket, wherein:
a transverse fixing device steel backing plate 9 in the vertical direction, a transverse fixing device stiffening steel plate 14 in the horizontal direction, and a transverse fixing device connecting steel plate 15 in the vertical direction form a transverse fixing device whole body through end beam anchoring steel plates 4 which are all welded in the vertical direction;
the steel backing plate 7 of the longitudinal fixing device is parallel to the end beam anchoring steel plate 4 and is welded on the end beam anchoring steel plate 4 to form the whole longitudinal fixing device;
the bent cap 3 is provided with bracket anchoring steel plates 6 in the vertical direction along the longitudinal two sides of the bridge, is connected with a steel bracket longitudinal limiting steel plate 8 in the horizontal direction through welding, and is connected with the two through an anchoring connecting steel plate 13 in a reinforcing way;
the longitudinal limiting steel plate 8 of the steel bracket, the transverse limiting steel backing plate 10, the longitudinal limiting stiffening steel plate 17, the transverse limiting stiffening steel plate 18 and the connecting steel plate 16 form a longitudinal and transverse steel bracket limiting device; the bottom surfaces of the longitudinal and transverse steel bracket limiting devices are welded and connected with the bracket anchoring steel plates 6; the steel corbel longitudinal limiting steel plate 8 is parallel to the steel corbel transverse limiting stiffening steel plate 18, perpendicular to the parallel steel corbel transverse limiting steel backing plate 10 and the steel corbel connecting steel plate 16, and the steel corbel longitudinal limiting stiffening steel plate 17 is welded to the longitudinal limiting steel plate 8 perpendicular to the steel corbel longitudinal limiting stiffening steel plate;
when the deformation of the bridge is consistent with the design, a gap is reserved between the longitudinal limiting steel plate 8 of the steel corbel and the longitudinal limiting damping rubber base plate 12, the longitudinal limiting device does not participate in the work; a gap is reserved between the steel backing plate 9 of the transverse fixing device and the transverse limiting damping rubber backing plate 11, so that the transverse limiting device does not participate in the work; when the bridge is displaced abnormally in the longitudinal direction or the transverse direction, the longitudinal limiting steel plate 8 of the steel bracket is clung to the longitudinal limiting damping rubber base plate 12 or the transverse fixing device steel base plate 9 is clung to the transverse limiting damping rubber base plate 11, meanwhile, the buffering is carried out to avoid damaging bridge members, the horizontal force received by the self-locking creeping limiting device is transmitted to the end cross beam through the transverse fixing device, and is transmitted to the cover beam through the transverse limiting device; the longitudinal force received by the self-locking crawling limiting device is transmitted to the end cross beam through the longitudinal fixing device and transmitted to the cover beam through the longitudinal limiting device. Therefore, the end cross beam, the self-locking creeping limiting device and the bridge pier are stressed together, bridge creeping damage to bridge members such as a stop block and the like is avoided, and the bridge support and the expansion joint can work normally in a reasonable longitudinal and transverse deformation interval.
Further, the width of the longitudinal steel corbel limiting stiffening steel plate 17 is smaller than that of the transverse steel corbel limiting steel backing plate 10, and the lengths of the transverse steel corbel limiting steel backing plate 10 and the steel corbel connecting steel plate 16 are smaller than 1/2 of the longitudinal steel corbel limiting steel plate 8.
Further, the end beam anchoring steel plate 4 is anchored to the end beam 1 through a chemical bolt, and the capping beam anchoring steel plate 5 is anchored to the capping beam 3 through a chemical bolt.
Furthermore, a self-locking creeping limiting device of a curved bridge is provided with 2 transverse fixing devices which are symmetrical with respect to a steel base plate 7 of a longitudinal fixing device along the transverse direction of the bridge, and 2 longitudinal fixing devices which are symmetrical with respect to the center line of a cover beam 3 along the longitudinal direction of the bridge.
Further, a longitudinal steel bracket limiting steel plate 8 is in contact connection with a steel backing plate 7 of the longitudinal fixing device through a longitudinal limiting damping rubber backing plate 12; the steel corbel transverse limiting steel backing plate 10 is in contact connection with the transverse fixing device steel backing plate 9 through a transverse limiting damping rubber backing plate 11.
Further, a gap is reserved between the longitudinal limiting steel plate 8 of the steel bracket and the longitudinal limiting damping rubber base plate 12, and a gap is reserved between the transverse fixing device steel base plate 9 and the transverse limiting damping rubber base plate 11 according to the maximum allowable deformation of the bridge bearing in the longitudinal and transverse directions.
The invention has the beneficial effects that:
the self-locking creeping limiting device realizes the integrated design of longitudinal creeping limiting and transverse creeping limiting, does not damage the existing structure of the bridge, and does not participate in the work when the deformation of the bridge is consistent with the design; when the bridge is abnormal in longitudinal or transverse displacement, the self-locking creeping limiting device can control the maximum longitudinal and transverse displacement of the bridge, so that the safety of bridge members is ensured, and the normal use of the bridge is ensured; the device has simple structure, convenient installation and reliable effect, can be widely applied to places needing the curve beam bridge limiting device, and obtains good economic benefit and social benefit.
Drawings
Fig. 1 is an elevation view of a self-locking creep limiting device.
Fig. 2 is a plan view of the self-locking crawling limit device.
Fig. 3 is a cross-sectional view a-a of fig. 1.
Fig. 4 is a cross-sectional view of B-B in fig. 1.
In the figure:
1-end beam, 2-main beam, 3-bent cap, 4-end beam anchoring steel plate, 5-bent cap anchoring steel plate, 6-bracket anchoring steel plate, 7-longitudinal fixing device steel backing plate, 8-steel bracket longitudinal limiting steel plate, 9-transverse fixing device steel backing plate, 10-steel bracket transverse limiting steel backing plate, 11-transverse limiting damping rubber backing plate, 12-longitudinal limiting damping rubber backing plate, 13-anchoring connecting steel plate, 14-transverse fixing device stiffening steel plate, 15-transverse fixing device connecting steel plate, 16-steel bracket connecting steel plate, 17-steel bracket longitudinal limiting stiffening steel plate and 18-steel bracket transverse limiting stiffening steel plate.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes in detail a curved bridge self-locking creep limiting method provided by the present invention with reference to the following embodiments. The following examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
Example 1
The utility model provides a stop device is moved in climbing of curve bridge self-locking, includes: the end cross beam anchoring steel plate 4, the bent cap anchoring steel plate 5, the bracket anchoring steel plate 6, the steel backing plate 7 of the longitudinal fixing device, the longitudinal steel plate 8 of the longitudinal steel bracket, the steel backing plate 9 of the transverse fixing device, the transverse steel backing plate 10 of the transverse steel bracket, the transverse rubber backing plate 11 of the transverse limiting damping rubber, the longitudinal rubber backing plate 12 of the longitudinal limiting damping rubber, the anchoring connecting steel plate 13, the stiffening steel plate 14 of the transverse fixing device, the connecting steel plate 15 of the transverse fixing device, the steel bracket connecting steel plate 16, the longitudinal steel reinforcing steel plate 17 of the longitudinal steel bracket, the transverse stiffening steel plate 18 of the transverse steel bracket limiting damping rubber, the end cross beam 1, the main beam 2 and the bent cap 3. The device is characterized in that a steel backing plate 9 of a transverse fixing device in the vertical direction, a stiffening steel plate 14 of the transverse fixing device in the horizontal direction and a connecting steel plate 15 of the transverse fixing device in the vertical direction form a whole transverse fixing device through welding, and the whole transverse fixing device is welded on an end beam anchoring steel plate 4 in the vertical direction; the steel backing plate 7 of the longitudinal fixing device is parallel to the end beam anchoring steel plate 4 and welded on the end beam anchoring steel plate 4 to form a whole longitudinal fixing device; the bent cap 3 is provided with bracket anchoring steel plates 6 in the vertical direction along the longitudinal two sides of the bridge, is connected with a steel bracket longitudinal limiting steel plate 8 in the horizontal direction through welding, and is connected with the two through an anchoring connecting steel plate 13 in a reinforcing way; the longitudinal limiting steel plate 8 of the steel bracket, the transverse limiting steel backing plate 10, the longitudinal limiting stiffening steel plate 17, the transverse limiting stiffening steel plate 18 and the connecting steel plate 16 form a longitudinal and transverse steel bracket limiting device; the bottom surfaces of the longitudinal and transverse steel bracket limiting devices are welded and connected with the bracket anchoring steel plates 6; the vertical spacing steel sheet of 8 parallel to the horizontal spacing steel sheet of putting more energy into of steel corbel 18 of steel corbel, the horizontal spacing steel backing plate of steel corbel 10 and the steel corbel connection steel sheet 16 that above-mentioned steel sheet perpendicular to is parallel to each other, through welded connection between the steel sheet, the vertical spacing steel sheet of putting more energy into of steel corbel 17 welds in the vertical spacing steel sheet 8 of vertically with it, for convenient construction, the width of the vertical spacing steel sheet of putting more energy into of this embodiment steel corbel 17 is 15cm, this width is less than the width 31cm of the horizontal spacing steel backing plate of steel corbel 10, the length of the horizontal spacing steel backing plate of steel corbel 10 and steel corbel connection steel sheet 16 is 44cm and 30cm respectively, all be less than 1/2 of the vertical spacing steel sheet of steel corbel 8 length 92 cm.
The end beam anchoring steel plate 4 is anchored to the end beam 1 through a chemical bolt, and the capping beam anchoring steel plate 5 is anchored to the capping beam 3 through a chemical bolt.
The transverse fixing devices of the self-locking creeping limiting device of the curved bridge are 2, and are symmetrical about a steel base plate 7 of the longitudinal fixing device along the transverse direction of the bridge; the longitudinal fixing device of the self-locking creeping limiting device for the curved bridge is provided with 2 longitudinal fixing devices, and the longitudinal fixing devices are symmetrical about the center line of the cover beam 3 along the longitudinal direction of the bridge.
The longitudinal steel bracket limiting steel plate 8 is in contact connection with the steel base plate 7 of the longitudinal fixing device through a longitudinal limiting damping rubber base plate 12; the steel corbel transverse limiting steel backing plate 10 is in contact connection with the transverse fixing device steel backing plate 9 through a transverse limiting damping rubber backing plate 11.
A gap is reserved between a steel corbel longitudinal limiting steel plate 8 and a longitudinal limiting damping rubber base plate 12 of the self-locking creeping limiting device for the curved bridge, and a gap is reserved between a transverse fixing device steel base plate 9 and a transverse limiting damping rubber base plate 11, so that the radial and normal displacement of the bridge structure is not limited under the design action, and only the radial or normal creeping which is accumulated under the long-term load action of the curved bridge and cannot be recovered is limited.
The specific construction process of the embodiment is as follows:
(1) and determining the size of each plate, the distance between the longitudinal and transverse fixing devices and the number of chemical bolts required for anchoring the steel plates according to the maximum allowable deformation of the bridge bearing, the size of the end cross beam and the size of the cover beam.
(2) And finally determining the actual installation position of the self-locking creeping limiting device of the curved bridge, the distance between the longitudinal and transverse fixing devices and the distance between the longitudinal and transverse limiting devices according to the measured values of the sizes of the bridge members.
(3) And (3) finishing the installation of the end beam anchoring steel plate 4 and the capping beam anchoring steel plate 5 on site, and installing a longitudinal fixing device.
(4) The self-locking creeping limiting device for the curved bridge is manufactured in a factory, the longitudinal and transverse steel bracket limiting device and the bracket anchoring steel plate 6 are welded into a whole according to a preset process, anti-corrosion coating is completed, the bent cap 3 is jacked by 10 cm-20 cm, the welded steel structure is horizontally placed integrally and dragged to a preset position from the bottom of the bent cap, and then the bent cap is installed in place according to a design drawing.
(4) And installing a transverse fixing device on site, and connecting the bracket anchoring steel plate 6 with the bent cap anchoring steel plate 5 according to design.
(5) And performing anticorrosive coating on all bare steel components.
The working principle of the self-locking creeping limiting device for the curved bridge is as follows:
when the deformation of the bridge is consistent with the design, a gap is reserved between the longitudinal limiting steel plate 8 of the steel bracket and the longitudinal limiting damping rubber base plate 12, the longitudinal limiting device is not contacted with the longitudinal limiting steel plate, and the longitudinal limiting device of the self-locking creeping limiting device does not participate in the work; a gap is reserved between the transverse fixing device steel backing plate 9 and the transverse limiting damping rubber backing plate 11, the transverse fixing device steel backing plate and the transverse limiting damping rubber backing plate are not in contact, and a transverse limiting device of the self-locking creeping limiting device does not participate in work; when the bridge is abnormal in longitudinal or transverse displacement, the steel bracket longitudinal limiting steel plate 8 is clung to the longitudinal limiting damping rubber base plate 12 or the transverse fixing device steel base plate 9 is clung to the transverse limiting damping rubber base plate 11, and meanwhile, the bridge has certain buffering capacity, so that the bridge is prevented from being damaged; the horizontal force borne by the self-locking crawling limiting device is transmitted to the end cross beam through the transverse fixing device and is transmitted to the cover beam through the transverse limiting device; the longitudinal force received by the self-locking crawling limiting device is transmitted to the end cross beam through the longitudinal fixing device and transmitted to the cover beam through the longitudinal limiting device. Therefore, the end cross beam, the self-locking creeping limiting device and the bridge pier are stressed together, bridge creeping damage to bridge members such as a stop block and the like is avoided, and the bridge support and the expansion joint can work normally in a reasonable longitudinal and transverse deformation interval.
The beneficial effects of this embodiment curve bridge is climbed to stop device from locking: the self-locking creeping limiting device realizes the integrated design of longitudinal creeping limiting and transverse creeping limiting, does not damage the existing structure of the bridge, and does not participate in the work when the deformation of the bridge is consistent with the design; when the bridge is abnormal in longitudinal or transverse displacement, the self-locking creeping limiting device can control the maximum longitudinal and transverse displacement of the bridge, so that the safety of bridge members is ensured, and the normal use of the bridge is ensured; the device has simple structure, convenient installation and reliable effect, can be widely applied to places needing the curve beam bridge limiting device, and obtains good economic benefit and social benefit. The present invention is not limited to the above-described examples, and various changes can be made without departing from the spirit and scope of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. A self-locking creeping limiting method for a curved bridge is characterized in that a self-locking creeping limiting device for the curved bridge is used, and comprises the following steps: end crossbeam, the girder, the bent cap, end crossbeam anchor steel sheet, bent cap anchor steel sheet, bracket anchor steel sheet, vertical fixing device's steel backing plate, vertical spacing steel sheet of steel bracket, horizontal fixing device steel backing plate, horizontal spacing steel backing plate of steel bracket, horizontal spacing damping rubber backing plate, vertical spacing damping rubber backing plate, anchor connecting steel sheet, horizontal fixing device steel sheet of putting more energy into, horizontal fixing device steel sheet of connecting, steel bracket steel sheet of connecting, vertical spacing steel sheet of putting more energy into of steel bracket, the horizontal spacing steel sheet of putting more energy into of steel bracket, wherein:
the transverse fixing device comprises a steel backing plate of a transverse fixing device in the vertical direction, a stiffening steel plate of a transverse fixing device in the horizontal direction, and a connecting steel plate of the transverse fixing device in the vertical direction, wherein the connecting steel plate of the transverse fixing device in the vertical direction is integrally formed by anchoring steel plates through end beams which are all welded in the vertical direction;
the steel backing plate of the longitudinal fixing device is parallel to the end beam anchoring steel plate and is welded on the end beam anchoring steel plate to form a whole longitudinal fixing device;
the bent cap is provided with bracket anchoring steel plates in the vertical direction along the longitudinal two sides of the bridge, the bent cap is connected with a steel bracket longitudinal limiting steel plate in the horizontal direction through welding, and the bent cap and the steel bracket longitudinal limiting steel plate are connected through an anchoring connecting steel plate in a reinforcing way;
the longitudinal and transverse steel bracket limiting device is formed by a longitudinal steel bracket limiting steel plate, a transverse limiting steel backing plate, a longitudinal limiting stiffening steel plate, a transverse limiting stiffening steel plate and a connecting steel plate; the bottom surfaces of the longitudinal and transverse steel bracket limiting devices are welded and connected with the bracket anchoring steel plates; the longitudinal steel bracket limiting steel plate is parallel to the transverse steel bracket limiting stiffening steel plate, the transverse steel bracket limiting steel backing plate and the transverse steel bracket connecting steel plate which are parallel to each other are perpendicular to the transverse steel bracket limiting steel backing plate, and the longitudinal steel bracket limiting stiffening steel plate is welded on the longitudinal steel bracket limiting steel plate perpendicular to the longitudinal steel bracket limiting steel plate.
2. The method for self-locking, creeping and spacing the curved bridge according to claim 1, wherein the width of the stiffening steel plate for longitudinal spacing of the steel corbel is less than the width of the steel corbel transverse spacing steel backing plate, and the length of the steel corbel transverse spacing steel backing plate and the steel corbel connecting steel plate is less than 1/2 of the length of the steel corbel longitudinal spacing steel plate.
3. The method for limiting the self-locking creeping of a curved bridge according to claim 1, wherein the end beam anchoring steel plate is anchored to the end beam by chemical bolts, and the capping beam anchoring steel plate is anchored to the capping beam by chemical bolts.
4. The method for limiting the self-locking creeping of a curved bridge according to claim 1, wherein 2 transverse fixing means are provided symmetrically to the steel plate of the longitudinal fixing means in the transverse direction of the bridge, and 2 longitudinal fixing means are provided symmetrically to the center line of the cap beam in the longitudinal direction of the bridge.
5. The self-locking creeping limiting method for the curved bridge according to claim 1, wherein the longitudinal limiting steel plate of the steel corbel is in contact connection with the steel backing plate of the longitudinal fixing device through a longitudinal limiting damping rubber backing plate; the steel corbel transverse limiting steel base plate is in contact connection with the steel base plate of the transverse fixing device through a transverse limiting damping rubber base plate.
6. The method for limiting the self-locking creeping of the curved bridge according to claim 1, wherein a gap is reserved between the longitudinal limiting steel plate of the steel corbel and the longitudinal limiting damping rubber base plate, and a gap is reserved between the transverse fixing device steel base plate and the transverse limiting damping rubber base plate according to the maximum allowable deformation of the bridge bearing in the longitudinal and transverse directions.
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| CN202110519421.5A CN113235463B (en) | 2021-05-12 | 2021-05-12 | Self-locking creeping limiting method for curved bridge |
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| CN202110519421.5A CN113235463B (en) | 2021-05-12 | 2021-05-12 | Self-locking creeping limiting method for curved bridge |
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| JPH1060821A (en) * | 1996-08-26 | 1998-03-03 | Kaimon:Kk | Drop prevention device for structure |
| JPH11280024A (en) * | 1998-03-31 | 1999-10-12 | Hitachi Zosen Corp | Base isolation device of structure |
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Inventor after: Wu Jiajia Inventor after: Zhang Tianjiao Inventor after: Liu Zhihua Inventor after: Guo Wenlong Inventor after: Wang Lei Inventor after: Wu Yan Inventor after: Shen Yanpeng Inventor after: Huang Shuai Inventor after: Li Qing Inventor after: He Zhaojian Inventor after: Chen Junjun Inventor after: Wang Xianan Inventor after: Zhao Xuefeng Inventor before: Wu Jiajia Inventor before: Guo Wenlong Inventor before: Wang Lei Inventor before: Wang Xianan Inventor before: Zhao Xuefeng Inventor before: Wu Yan Inventor before: Shen Yanpeng Inventor before: Huang Shuai Inventor before: Chen Junjun Inventor before: Li Qing Inventor before: He Zhaojian Inventor before: Zhang Tianjiao Inventor before: Liu Zhihua |
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Effective date of registration: 20221108 Address after: 030032 No.27, Wuluo street, Taiyuan City, Shanxi Province Applicant after: Shanxi Communications New Technology Development Co.,Ltd. Applicant after: Shanxi Transportation Technology Research and Development Co.,Ltd. Address before: 030032 No.27, Wuluo street, economic and Technological Park, Xiaodian District, Taiyuan City, Shanxi Province Applicant before: Shanxi Transportation Technology Research and Development Co.,Ltd. |
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