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Friction energy dissipation beam falling prevention device

A technology of frictional energy consumption and anti-falling beams, applied in bridges, bridge parts, bridge construction, etc., to achieve the effect of easy maintenance, easy production, and clear concept

Active Publication Date: 2015-04-08
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Friction energy dissipation beam falling prevention device
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  • Friction energy dissipation beam falling prevention device

Examples

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Embodiment Construction

[0022] A frictional energy dissipation anti-falling beam device is composed of two fixed end components respectively connected with bridge pier and beam body, two channel steel systems, a connecting steel plate and four rotational frictional energy dissipation hinges.

[0023] In this example, the fixed end assembly is welded by two steel plates, one of which is a fixed plate 1 anchored by embedded high-strength bolts 6, and the other is an overhanging steel plate welded at the center of the fixed plate and protruding outward 8. There are two fixed end assemblies in total, wherein the fixed end assembly in the horizontal direction is anchored on the bridge pier through embedded bolts, and the fixed end assembly in the vertical direction is anchored on the beam body through embedded bolts. The channel steel system consists of two back-to-back channel steels 2, the channel steel model is No. 20, and the length is about 50 cm. The central overhanging steel plate 8 of the fixed e...

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Abstract

A friction energy dissipation beam falling prevention device belongs to the technical field of quakeproofing and disaster reduction. The device comprises two fixed end assemblies which are connected with a bridge pier and a bridge beam respectively, two channel steel systems, a connection steel plate, and four rotation friction energy dissipation hinges. The fixed end assemblies are anchored on the bridge pier and the bridge beam by four pre-embedded high-strength bolts, each channel steel system comprises two channel steels which are backed up against each other, each rotation friction energy dissipation hinge comprises two annular steel sheets, two annular copper sheets and a high-strength bolt. The high-strength bolt sequentially passes through its corresponding annular steel sheet, annular copper sheet, channel steel extending steel plate of the fixed end assembly or the connection steel plate, channel steel, annular copper sheet and annular steel sheet to form the rotation friction energy dissipation hinge. When the bridge beam shifts relative to the bridge pier, the four hinge structures can freely rotate and prevent the beam from falling, and simultaneously the annular steel sheets, the annular copper sheets, the channel steels and the fixed end steel plates or the connection steel plate can also dissipate some energy during the rotation process.

Description

technical field [0001] The invention relates to the construction field of bridge engineering, in particular to a friction energy consumption anti-fall beam device. technical background [0002] my country is located between the circum-Pacific seismic belt and the Eurasian seismic belt. Most of the country's territory is an earthquake zone, especially the western part of my country is mostly a strong earthquake zone with frequent seismic activities. The construction of such a large number of bridges in my country is inevitable. Bring new challenges to bridge design. As one of the lifeline projects, bridges shoulder the heavy responsibility of earthquake relief and post-disaster reconstruction. During the Wenchuan Earthquake, because many bridges in and around Wenchuan County were seriously damaged, disaster relief personnel and supplies were unable to enter by land, which greatly hindered the rescue of the disaster area. [0003] Previous earthquake damage surveys show that ...

Claims

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Application Information

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IPC IPC(8): E01D19/00E01D19/04
CPCE01D19/00E01D19/04
Inventor 许紫刚韩强杜修力
Owner BEIJING UNIV OF TECH
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