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Pin hole type bridge collapse-preventing device

A technology for preventing falling beams and pin holes, which is used in bridges, bridge parts, bridge construction and other directions to achieve the effect of simple production, avoiding falling beams and collision damage, and clear principles.

Active Publication Date: 2014-04-02
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, bridges built and under construction in high-intensity areas in my country rarely use anti-fall beam devices.

Method used

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  • Pin hole type bridge collapse-preventing device
  • Pin hole type bridge collapse-preventing device
  • Pin hole type bridge collapse-preventing device

Examples

Experimental program
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Embodiment Construction

[0015] A pin-hole type anti-drop beam device is composed of a fixed end assembly, a movable end assembly, and a limit assembly. The fixed end assembly includes a fixed end steel plate 3 and a fixed end joint 4; the fixed end steel plate 3 is an open-hole type Channel steel; the openings are two, both are circular; the fixed end joint 4 is a pin-lug type opening connector, which is welded to one end of the fixed end steel plate 3; the movable end assembly includes a movable end steel plate 2. The movable end joint 1; the movable end steel plate 2 is an open-hole flat steel plate; the number of openings is two, all of which are racetrack-shaped; the movable end joint 1 is a pin-lug type open-hole connector, and the movable end steel plate 2 is welded; the limit component includes a first-stage anti-shear pin 5, a first-stage nut 6, a first-stage washer 7, a second-stage anti-shear pin 8, a second-stage nut 9, and a second-stage washer 10; The upper end of the anti-shear pin 5 is ...

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Abstract

The invention relates to a pin hole type bridge collapse-preventing device and belongs to the field of bridge construction. The pin hole type bridge collapse-preventing device comprises a fixed end component, a moveable end component and a limiting component, wherein the fixed end component is composed of a fixed end steel plate and a fixed end connector; the fixed end steel plate is made of opening type channel steel; the fixed end connector is a pin lug type opening connector and is welded with the fixed end steel plate; the moveable end component is composed of a moveable end steel plate and a moveable end connector; an opening type flat steel plate is arranged as the moveable end steel plate; the moveable end connector is a pin lug type opening connector and is welded with the moveable end steel plate; the limiting component is composed of a first-order shear-pin, a first-order nut, a first-order gasket, a second-order shear-pin, a second-order nut and a second-order gasket. The pin hole type bridge collapse-preventing device has the advantages of clear conception, clear principle and simple manufacturing, can be mounted on the components on two sides of a bridge expansion joint and is used for reducing the bridge collapse probability under the action of earthquake.

Description

Technical field: [0001] The invention relates to an anti-drop beam device for bridges, in particular to a pin-hole type anti-drop beam device. Background technique: [0002] Earthquakes are one of the natural disasters that endanger human survival and safety the most. my country is one of the countries with the strongest earthquake activity and the most severe earthquake disaster in the world. Bridges are lifeline projects, shouldering the important task of earthquake relief and post-disaster reconstruction. In the Wenchuan earthquake, many bridges in and around Wenchuan County were severely damaged, and relief personnel and materials were unable to enter the disaster area by land, which greatly hindered the rescue in the disaster area. [0003] Earthquake damage investigation is the foundation of bridge seismic research. Previous earthquake damage investigations have shown that beam drop is the most frequent, most destructive, and most difficult form of bridge earthquake damage....

Claims

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Application Information

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IPC IPC(8): E01D19/00
Inventor 燕斌杜修力许紫刚
Owner BEIJING UNIV OF TECH
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