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Damping rigid-frame bridge pier having buckling restrained braces

A technology of buckling constraints and bridge piers, which is applied to bridges, bridge construction, bridge parts, etc., can solve problems such as improvement, and achieve the effect of improving earthquake resistance, protecting the main structure of the bridge, and reducing damage

Pending Publication Date: 2019-05-03
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above schemes have made improvements to the structural system to improve the seismic performance of the bridge

Method used

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  • Damping rigid-frame bridge pier having buckling restrained braces
  • Damping rigid-frame bridge pier having buckling restrained braces
  • Damping rigid-frame bridge pier having buckling restrained braces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see figure 1 , a kind of shock-absorbing rigid frame bridge pier containing buckling restraint support, is characterized in that: comprise main girder 1 and double limb thin-walled pier 2, and some buckling restraint support 3 and embedded steel member 141.

[0054] The double-leg thin-walled pier 2 includes A limb 201 and B limb 202 perpendicular to the horizontal plane. Both the upper ends of the A limb 201 and the B limb 202 are connected under the main beam 1 .

[0055] When pouring the double-leg thin-walled pier 2, several pre-embedded steel components I41 are pre-embedded inside the A-leg 201 and the B-leg 202. The part of each pre-embedded steel member I41 exposed to the concrete surface is a connecting steel plate I411.

[0056] Each of the connecting steel plates I411 on the A limb 201 is located on the surface facing the B limb 202 . Each of the connecting steel plates I411 on the B limb 201 is located on the surface facing the A limb 202 .

[0057]Disloc...

Embodiment 2

[0060] see figure 2 , a kind of shock-absorbing rigid frame bridge pier containing buckling restraint support, is characterized in that: comprise main girder 1, two limbs thin-walled piers 2, and some buckling restraint supports 3, embedded steel member 141, horizontal crossbeam 5 and some prefabricated Buried steel member III43.

[0061] The double-leg thin-walled pier 2 includes A limb 201 and B limb 202 perpendicular to the horizontal plane. Both the upper ends of the A limb 201 and the B limb 202 are connected under the main beam 1 .

[0062] When pouring the double-leg thin-walled pier 2, several pre-embedded steel components I41 are pre-embedded inside the A-leg 201 and the B-leg 202. The part of each pre-embedded steel member I41 exposed to the concrete surface is a connecting steel plate I411.

[0063] Each of the connecting steel plates I411 on the A limb 201 is located on the surface facing the B limb 202 . Each of the connecting steel plates I411 on the B limb ...

Embodiment 3

[0069] see image 3 or Figure 4 , a kind of shock-absorbing rigid frame bridge pier containing buckling restraint support, is characterized in that: comprise main girder 1 and double limb thin-walled pier 2, and some buckling restraint support 3 and embedded steel member 141.

[0070] The double-leg thin-walled pier 2 includes A limb 201 and B limb 202 perpendicular to the horizontal plane. Both the upper ends of the A limb 201 and the B limb 202 are connected under the main beam 1 .

[0071] When pouring the double-leg thin-walled pier 2, several pre-embedded steel components I41 are pre-embedded inside the A-leg 201 and the B-leg 202. The part of each pre-embedded steel member I41 exposed to the concrete surface is a connecting steel plate I411.

[0072] Each of the connecting steel plates I411 on the A limb 201 is located on the surface facing the B limb 202 . Each of the connecting steel plates I411 on the B limb 201 is located on the surface facing the A limb 202 . ...

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Abstract

The invention discloses a damping rigid-frame bridge pier having buckling restrained braces, comprising jacket support legs, conventional horizontal connecting support pipes for connecting adjacent support legs, and buckling restrained braces. Inclined support pipes are replaced by the buckling restrained braces, which are arranged in a trapezoid-shaped area formed by the adjacent support legs andthe adjacent horizontal connecting support pipes. The invention is advantageous in that the arrangement of the buckling restrained braces are arranged, and the features of the buckling restrained braces, like high supporting strength, large rigidity and good hysteretic performance are fully utilized, so that the structure can have better anti-vibration performance than a conventional jacket platform under the situation of earthquake.

Description

technical field [0001] The invention relates to a bridge structure system, in particular to a novel bridge structure system which uses buckling restraint supports to improve the seismic performance of the bridge. Background technique [0002] Seismic surveys show that continuous rigid frame bridges are a type of bridge with good seismic performance. Due to the consolidation of piers and girders, severe beam falling damage generally does not occur in major earthquakes. Continuous rigid frame bridge with double-leg thin-walled piers has large longitudinal bending and transverse torsional rigidity, which can not only ensure safety and stability during construction, but also meet the force requirements of super-long-span bridges. widely adopted. [0003] At present, people's understanding of the mechanism of earthquake occurrence is still insufficient, the multi-level design idea based on probability theory is still not perfect, and the analysis of bridge seismic response is st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02
Inventor 白久林段练孙博豪金双双秦凤江徐梁晋
Owner CHONGQING UNIV
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