Mechanical locking device used for continuous girder bridge under earthquake action

A locking device, mechanical technology, applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems of durability and maintenance, complex structure of viscous dampers and lock-up devices, high cost, and achieve friction coefficient. Small, reduce the earthquake response requirements, prevent the effect of falling beam phenomenon

Inactive Publication Date: 2016-04-20
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the structure of the viscous damper and the lock-up device is compl

Method used

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  • Mechanical locking device used for continuous girder bridge under earthquake action
  • Mechanical locking device used for continuous girder bridge under earthquake action
  • Mechanical locking device used for continuous girder bridge under earthquake action

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Such as Figure 1-4 As shown, the present invention discloses a mechanical locking device for continuous girder bridges under earthquake action with simple structure, convenient construction, and low installation and maintenance costs. It is installed between the beam body 1 and the movable pier 2, and connected The supports are connected in parallel, including the upper steel backing plate 3, the lower steel backing plate 4, the chute 6, the slider 5 and the slider locking mechanism, the upper steel backing plate 3 is anchored to the bottom of the beam body 1, and the lower steel backing plate 4 is anchored to the movable On the top of the pier 2, the chute 6 is anchored on the lower steel backing plate 4, the slider 5 is placed in the chute 6, and its top is anchored to the upper steel backing plate 3, and four slider locking mechani...

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Abstract

The invention relates to a mechanical locking device used for a continuous girder bridge under an earthquake action. The mechanical locking device comprises an upper steel base plate (3), a lower steel base plate (4), a slide groove (6), a slide block (5) and slide block locking mechanisms; the upper steel base plate (3) is fixed at the bottom of a girder body (1); the lower steel base plate (4) is fixed at the top of a movable pier (2); the slide groove (6) is fixedly arranged on the lower steel base plate (4); the slide block (5) is arranged in the slide groove (6), and the top of the slide block (5) is fixedly connected with the upper steel base plate (3); and the four slide block locking mechanisms are arranged to form a rectangular shape, are arranged on the outer side of the slide groove (6) and stretch into and out of the slide groove (6) along a sliding direction vertical to the slide block (5). Compared with the prior art, the mechanical locking device has the advantages that the inertia force of the girder body (1) is reasonably distributed in an earthquake process, relative displacement of a pier girder is limited, the girder is prevented from falling, the cost is low, and the repairing is simple after the earthquake and the like.

Description

technical field [0001] The invention belongs to the field of bridge safety, in particular to a mechanical locking device for continuous girder bridges under earthquake action. Background technique [0002] In the longitudinal direction of the continuous girder bridge, due to the need to release the temperature deformation of the beam body, only one fixed support is provided for each link, and movable supports are provided on the remaining piers. Under the action of longitudinal earthquake, due to the sliding of the movable support, the seismic inertial force of the beam body is mainly transmitted to the fixed pier through the fixed support, and the fixed support, fixed pier and fixed pier foundation will bear a large earthquake force. Reducing the seismic force on fixed piers and their foundations becomes the key to the seismic design of long-span continuous girder bridges. [0003] In order to reduce the seismic force on fixed piers under longitudinal earthquake action, vi...

Claims

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Application Information

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IPC IPC(8): E01D19/00
CPCE01D19/00
Inventor 李建中陈旭
Owner TONGJI UNIV
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