Combined multistage three-way anti-seismic bridge limiting device based on BRB technology

A limit device and combined technology, applied in bridges, bridge construction, bridge parts, etc., can solve the problems of insignificant effect and few three-way limit devices, and achieve excellent limit performance, low cost, easy to use and The effect of promotion

Active Publication Date: 2021-03-30
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are very few studies on the three-way limit device of bridges in my country, and the research mainly focuses on the simple one-way limit device, but the effect is not obvious

Method used

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  • Combined multistage three-way anti-seismic bridge limiting device based on BRB technology
  • Combined multistage three-way anti-seismic bridge limiting device based on BRB technology
  • Combined multistage three-way anti-seismic bridge limiting device based on BRB technology

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Experimental program
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Effect test

Embodiment 1

[0044] Such as Figure 1-9 As shown, a combined multi-stage three-way anti-seismic bridge limiting device based on BRB technology of the present invention includes a beam body 7 and a bridge pier 8, and a plate rubber bearing 9 and a bearing are arranged between the beam body 7 and the bridge pier 8 Pad stone 10, such as Figure 1-3 As shown, the combined multi-stage three-way seismic bridge limit device consists of two sets of buckling restraint support structures 1 , limit sliding connection components 3 , spherical hinges 2 and annular limit cables 5 arranged in a V shape. Such as Figure 4-6As shown, the buckling-constrained support structure 1 includes a connection part 1e, an angle steel 1d, a support inner core 1a, and an outer steel pipe 1b. The space between the support inner core 1a and the outer steel pipe 1b is filled with mortar or concrete 1c, and the two ends of the support inner core 1a are respectively set There are connecting parts 1e and angle steel 1d. T...

Embodiment 2

[0060] In the present invention, a combined multi-stage three-direction anti-seismic bridge limiting device based on BRB technology, its two sets of buckling constrained support structures 1 are arranged in an inverted V shape along the longitudinal direction of the bridge, that is, two spherical joints 2 are arranged adjacent to each other. The girder bottom 7 and the two limit sliding connection components 3 are scattered and arranged on the upper end of the side wall of the pier 8, and the angle formed by the two buckling restraint support structures 1 is 90°. The connection mode of other parts is the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0062] A combined multi-stage three-way anti-seismic bridge limiting device based on BRB technology of the present invention uses abutments instead of bridge piers 8, and two buckling restraint support structures 1 and ring-shaped limiting cables 5 are arranged at the lower end of beam body 7 between the abutment front wall. The connection mode of other parts is the same as that of Embodiment 1, and will not be repeated here.

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Abstract

The invention relates to a combined multistage three-way anti-seismic bridge limiting device based on the BRB technology. The device comprises a beam body, a pier, two buckling restrained supporting structures arranged in a V shape, a limiting sliding connection assembly, a spherical hinge and an annular limiting inhaul cable. Two ends of the buckling restrained brace structure are connected withthe spherical hinge and the rigid smooth ball respectively, and the rigid smooth ball freely and relatively slides in a hole channel of the limiting sliding connection assembly under the condition ofsmall displacement of the beam body; when large earthquake displacement happens to the beam body, the buckling restrained brace structure consumes earthquake energy through elasticoplastic deformation. The annular limiting inhaul cable plays a limiting role after the buckling restrained brace structure is pulled and loses efficacy. According to the anti-seismic concept of multi-stage fortification, the traditional buckling restrained brace structure and inhaul cable limiter technology are combined, displacement of the beam body under longitudinal, transverse and vertical seismic oscillation can be effectively limited, and the structure is simple and reliable.

Description

technical field [0001] The invention relates to a combined multi-stage three-way anti-seismic bridge limiting device based on BRB technology, which belongs to the technical fields of bridge anti-seismic and bridge anti-seismic isolation. Background technique [0002] In recent years, there have been many strong earthquakes in the world, causing serious losses to human life and property. The seismic problem of bridges has become the focus of attention in the field of engineering. For bridges spanning faults or near faults, due to the complex fault rupture process, the permanent displacement of the surface rupture is difficult to predict, the bridge may be subjected to seismic forces from all directions, longitudinal, horizontal and vertical, and the beam falling and collision damage of the bridge are particularly serious. [0003] At present, there are very few studies on the three-way limit device of bridges in our country, and the research mainly focuses on the simple one-...

Claims

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Application Information

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IPC IPC(8): E01D19/00E01D19/02E01D19/04E01D21/00F16F15/02F16F15/04
CPCE01D19/00E01D19/02E01D19/041E01D21/00F16F15/02F16F15/04
Inventor 王军文王昌鹏高荣澳刘丽杰彭涛郭进
Owner SHIJIAZHUANG TIEDAO UNIV
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