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An installation method of a prefabricated plate bridge rubber bearing

A technology of rubber bearing and installation method, which is applied in the direction of erecting/assembling bridges, bridges, bridge construction, etc. Effect

Active Publication Date: 2019-04-23
薛秋香
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is: to change the method of installing rubber bearings based on experience, to precisely control the installation of rubber bearings for assembled bridges, and to avoid large differences in deformation of rubber bearings during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The bridge deck is a 20m, 90-degree prestressed hollow slab with a weight of 22.10t. The specifications of the rubber bearing are diameter φ = 200mm, thickness δ = 35mm.

[0030] In this embodiment, the installation method of the rubber bearing is as follows:

[0031] 1. Calculate the pressure F on the rubber bearing

[0032] Each bridge deck weighs 22.10t and is supported by four rubber bearings, so the pressure on each rubber bearing is: F=22.10t÷4=5.525t.

[0033] 2. Rubber bearing pressure test

[0034] Randomly sample a group of three rubber bearings, apply pressure F=5.525t on the press, measure the vertical deformation of the three rubber bearings: 0.38mm, 0.34mm, 0.34mm, the maximum and minimum values ​​are the same as the middle The quotient obtained by dividing the absolute value of the value difference by the median value is 12%, 0%, and not more than 15%, then take the arithmetic mean value of the three vertical deformations as the pressure test result, th...

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PUM

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Abstract

The invention provides a mounting method of an assembled slab bridge rubber support. The mounting method includes: adjusting height of support pinner according to supporting force needed by the rubbersupport below bridge slabs; utilizing vertical deformation of the rubber support for precise adjustment; further adopting deflection of adjacent bridge slabs to adjust the height of the support pinner below the rubber support until requirements are met. By the mounting method, precise control on mounting of the rubber support is realized, and the defect that the supporting force of the rubber support is provided and adjusted according to experience is overcome.

Description

technical field [0001] The invention relates to the technical field of highway bridge construction and maintenance, in particular to a method for installing rubber bearings of assembled slab bridges. Background technique [0002] Bridges are an important part of highways. With the rapid development of highway construction, the number of bridges is also increasing rapidly. According to incomplete statistics, there are currently more than 800,000 highway bridges in my country, and more than 10,000 bridges are built every year. my country is not only a "big bridge country", but also a "bridge powerhouse". [0003] Prefabricated slab bridge is a common bridge type with large quantity and wide area in highway bridges. It has simple structure and clear force. It can adopt reinforced concrete or prestressed concrete structure, can be made into solid or hollow, and can be factory-produced. Therefore, , All kinds of highways and urban roads and bridges are widely used. [0004] At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/04E01D21/00
CPCE01D19/04E01D21/00
Inventor 薛秋香罗闯旦张鹏寇景敏胡洁李晋郭延辉王海有
Owner 薛秋香