One-time leveling method for installation of large bridge support

A bridge bearing, a one-time technology, applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems of bridge safety hazards, limited operating space on the top of pier columns, difficult to meet the requirements of bearing leveling, etc., to achieve cost saving, The effect of improving construction quality

Inactive Publication Date: 2009-08-26
NO 3 ENG LIMITED OF CR20G
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the large bridge support and the limited operating space on the top of the pier columns, it is difficult to level the support during construction to meet the requirements
At present, dry and hard mortar is used as the anchor leveling grouting material for bridge support, so it is difficult for the support to meet the standard level, leaving serious safety hazards for the later operation of the bridge

Method used

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  • One-time leveling method for installation of large bridge support

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0013] a. Select four leveling bolts (2) according to the size of the support (1), screw all the screw rods of the leveling bolts (2) with nuts, determine the geometric dimensions of the backing plate (5) under the support, and pour Leave a reserved hole (4) for the support anchor bolt in front of the pad stone (3), and pre-embed four leveling bolts (2) with nuts in the pad stone (3), so that the leveling bolts (2) The nut is higher than the top surface of the backing stone (3), and the pre-embedded position of the leveling bolt (2) is guaranteed to be within the vertical and horizontal range of the backing plate (5) under the support;

[0014] b. When the concrete strength of the backing stone (3) reaches more than 20Mpa, firstly rotate the four pre-embedded leveling bolts (2) to make the top elevation consistent with the bottom surface elevation of the...

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Abstract

The invention relates to a one-time leveling method for the installation of a large bridge support, the bridge support, as an important constituent part of a beam bridge structure, is a force transferring device arranged at the support location of a bridge-span structure and a bridge pier or the supporting position of a bridge abutment. As the large bridge support limits the operating space on the top of a pier column, the support is difficult to meet the leveling demand during construction. At present, dry hard mortar is used as an anchorage leveling grouting material of the bridge support during the erection of the bridge, so normative level and standard are hardly reached, leaving potential safety hazards to post-operation of the bridge. The invention embeds in advance a plurality of leveling bolts in a pad stone to rotatably level the bolts so that the height of the topmark thereof is consistent in scale height of bottom surface of a lower filler plate of the support; the support is suspended on the leveling bolts and is regulated to be consistent with the axial line of the pad stone; a bonding material is poured between the pad stone and the support. The invention can, without being impacted by inconsistent compression of the dry hard mortar, level the support via the leveling bolts at one time, thus avoiding the defect of current method that repeated loading/unloading and leveling are required.

Description

technical field [0001] The invention relates to a leveling method for installing a large bridge support, in particular to a one-time leveling method for installing a large bridge support, and belongs to the technical field of road engineering construction. Background technique [0002] The bridge support is an important part of the beam bridge structure, and it is a force transmission device installed at the support of the bridge span structure and the bridge pier or bridge abutment. With the development of road engineering, bridge girders and bridge supports are getting bigger and bigger. At the same time, new requirements are constantly being put forward for the bearing capacity and deformation capacity of bridge supports, and the technical requirements for construction and installation are getting higher and higher. Due to the large bridge support and the limited operating space on the top of the pier column, it is difficult to achieve the leveling of the support during c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/04
Inventor 王亮池平平张超民赵春锋苏红岭陈向军马建会田占良
Owner NO 3 ENG LIMITED OF CR20G
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