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Bridge three-way limit device and bridge three-way limit vibration reduction structure

A technology for limiting devices and bridges, applied in bridges, bridge construction, bridge parts, etc., can solve the problems of large interference between beam reinforcement and prestressed steel bundles, no shock absorption, complex structure, etc., so as to reduce the amount of steel used. , the effect of reducing damage and simple structure

Active Publication Date: 2012-06-13
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the vertical limit, longitudinal and transverse limit devices are separated for these three forms, the structure is complex, and there is a large interference with the beam body reinforcement and prestressed steel beams, cumbersome installation, and high cost.
In addition to the chain-type vertical limit, which has a certain shock-absorbing effect due to the elastic rubber body, the vertical limit of the anchor steel rod or prestressed steel beam has no shock-absorbing effect.

Method used

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  • Bridge three-way limit device and bridge three-way limit vibration reduction structure
  • Bridge three-way limit device and bridge three-way limit vibration reduction structure
  • Bridge three-way limit device and bridge three-way limit vibration reduction structure

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] refer to figure 2 , the bridge three-way limiting device of the present invention comprises a base 30 and an inverted L-shaped rigid card falcon made of steel vertical limbs 31 and horizontal limbs 32. The lower end of the vertical limbs 31 is fixedly connected with the base 30 as a whole. The upper end of 31 and the front end of transverse limb 32 have vertical limb ball head 31a and horizontal limb ball head 32a respectively. The device integrates the three-way limit, and can simultaneously limit and buffer the vertical, longitudinal and lateral displacements of the beam body.

[0015] refer to figure 1 and image 3 , The bridge three-way limit shock-absorbing structure of the present invention includes a pier body 20 and a beam body 10 supported on two support pad stones 21 and 22 at the top of the pier body 20 through a support. The base...

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PUM

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Abstract

The invention discloses a bridge three-way limit device and a bridge three-way limit vibration reduction structure which have the limit and buffering effects on vertical, longitudinal and horizontal displacement of a beam body and can effectively reduce the damage of earthquake to a bridge structure. The bridge three-way limit device comprises a foundation, and an inverse-L-shaped rigid clamp falcon which consists of a steel vertical limb and a horizontal limb; the lower end of the vertical limb is integrally and fixedly connected with the foundation; and the upper end of the vertical limb and the front end of the horizontal limb are provided with a vertical limb ball and a horizontal limb ball respectively. The foundation is fixedly arranged on the top of a pier body; a limit groove which extends in the vertical direction is formed in the end of the beam body; and a steel sleeve which extends backwards from the bottom wall of the limit groove in the longitudinal direction is pre-embedded in the bottom of the beam body. The horizontal limb is extended into the steel sleeve, and the vertical limb ball is positioned in the limit groove. A longitudinal gap which can meet the requirement of normal longitudinal displacement when the beam body is used is reserved between the horizontal limb ball and the bottom of the steel sleeve; and a horizontal gap which can meet the requirement of normal horizontal displacement when the beam body is used is reserved between the vertical limb ball and the wall of the limit groove.

Description

technical field [0001] The invention relates to bridges, in particular to a three-way limiting device for limiting longitudinal, lateral and vertical displacements of bridges, and a bridge three-way limiting shock-absorbing structure using the device. Background technique [0002] Years of earthquake disasters around the world have shown that with the development of urbanization, the transportation network is becoming more and more important in the lifeline system of earthquake resistance and disaster prevention in the whole city. The 1976 Tangshan earthquake, the 1994 Northridge earthquake in the United States, the 1995 Hanshin earthquake in Japan, the 1997 San Fernado earthquake in the United States, and the 1999 Chiji earthquake in Taiwan all caused serious damage to the local transportation network. , leading to huge losses of life and property, and the vertical and horizontal beam drop of bridges is the most prominent form of earthquake damage. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00
Inventor 何庭国陈列周永礼许志艳钟新
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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