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Prefabricated section spliced bridge-pier bridge

A bridge pier and segment technology, which is applied in the field of prefabricated segment piers and bridges, can solve problems such as collision damage to the superstructure, and achieve the effect of reducing local damage.

Pending Publication Date: 2018-08-21
CHINA RAILWAYS CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a prefabricated section assembled pier bridge to solve the problem of collision damage to the upper structure of the existing prefabricated section assembled pier bridge during an earthquake

Method used

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  • Prefabricated section spliced bridge-pier bridge

Examples

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Embodiment

[0029] Please refer to figure 1 , the prefabricated section-assembled pier bridge includes a plurality of pier 110 , and two adjacent pier 110 are connected by a main girder 30 . The pier 110 is composed of multi-layer concrete segments 10 arranged sequentially from top to bottom. Two supports 20 are arranged on the top of the top concrete segment 10, and a main girder 30 is erected on each support 20. The main girder 30 Arranged in a straight line, the connection direction of the support 20 is the same as the extension direction of the main beam 30 .

[0030] Two adjacent main girders 30 are spaced apart, that is, end faces of adjacent two main girders 30 face each other and form expansion joints 40 . Each expansion joint 40 is provided with a crash pad 50 whose thickness is half of the width of the expansion joint 40 . The thickness direction of the crash pad 50 and the width direction of the expansion joint 40 are consistent with the extension direction of the main beam 30...

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Abstract

The invention discloses a prefabricated section spliced bridge-pier bridge, which belongs to the technical field of a bridge. The prefabricated section spliced bridge-pier bridge comprises a pluralityof bridge piers and main beams for connecting every two adjacent bridge piers; each bridge pier comprises a plurality of layers of concrete sections which are successively arranged from top to bottom; the top of the bridge pier is provided with two supporting seats, and each supporting seat is provided with the main beam; the main beams are separately arranged to form telescopic gaps, each telescopic gap is provided with an anti-collision mat, and the main beams are connected by virtue of a limiting apparatus of the telescopic gap; the limiting apparatus comprises an SM A limiting steel cableas well as limiting members arranged on two ends of the SM A limiting steel cable; the SM A limiting steel cable penetrates through the telescopic gaps; and the limiting members are respectively buried in the main beams. The large collision force between two adjacent main beams is converted into small collision in multiple times, so that the local damage of the main beam caused by the excessivelylarge collision force can be avoided, and the dropping phenomenon of the main beams can also be avoided.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to a prefabricated segmental assembled pier bridge. Background technique [0002] Bridge piers are the main energy-dissipating components of bridge structural systems during earthquakes, and they are also vulnerable components. Prefabricated segmental piers solve the problems of rapid self-construction and post-earthquake repair, but may cause more serious earthquake damage to the overall system of the bridge, especially the superstructure. Compared with the overall cast-in-place pier, which has better integrity and energy dissipation capacity, the prefabricated segmental assembly pier has poor integrity and energy dissipation capacity due to the openings between segments, which makes the bridge superstructure Under the lower conditions, the shock is more severe and the collisions are more frequent, resulting in a greater possibility of superstructure damage, deflection, and even f...

Claims

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Application Information

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IPC IPC(8): E01D19/02E01D19/06E01D19/00
CPCE01D19/00E01D19/02E01D19/06
Inventor 李小珍赵鲁峰辛莉峰刘鸣杨得海张泽田
Owner CHINA RAILWAYS CORPORATION
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