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Ultrahigh single-column pier reinforcing and maintaining method

A single-column pier and super-high technology, which is applied in the field of maintenance of super-high single-column piers, can solve the problems of long sealing time, slow installation progress, and high implementation costs, and achieve the effects of shortening the construction period, ensuring accuracy, and shortening the project construction period

Active Publication Date: 2020-09-11
LUPU BRIDGE MAINTENANCE & MANAGEMENT BRANCH SHANGHAI MUNICIPAL CONSERVATION MANAGEMENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problems of slow installation progress and low installation accuracy under the existing technical conditions, and solve the problems of high implementation cost and long time for road sealing operations, a method for reinforcement and maintenance of ultra-high single-column pier is provided

Method used

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  • Ultrahigh single-column pier reinforcing and maintaining method

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] The super-high single-column pier reinforcement method of the present invention is aimed at the engineering example of S32-span G60 single-column pier. figure 1 The hanging basket construction platform shown in (a) and (b), and press figure 2 (a) and (b) to 4 construction drawings for construction, the specific steps are as follows:

[0043] 1. Installation and lowering of the hanging basket

[0044] (1) Lifting point positioning

[0045] Determining the height and position of the hanging basket 1 can not only satisfy the drilling of the side of the pier column 2, the installation of the reinforcement 4 and the installation of the anchor bolt system, but also satisfy the welding between the anchor bolt system and the steel box girder 3.

[0046] (2) Lug installation

[0047] Weld two hanging basket lugs 5 at the web of the steel box girder 3...

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Abstract

The invention relates to an ultrahigh single-column pier reinforcing maintenance method, which comprises the following steps: firstly, arranging a hanging basket construction platform by utilizing a beam bottom space, not occupying an expressway ground road, reducing the influence of construction on expressway traffic, and mounting and dismounting a construction operation platform through the procedures of lifting point mounting, lifting lug mounting, hanging basket mounting and lifting, hanging basket locking and the like; by adopting the measure of adjusting the embedded steel bar angle, theproblems of dense arrangement of steel bars on a cross beam and a bent cap and high anchor bolt construction positioning difficulty in dry drilling construction are effectively solved, and the problem that skew bridge pier steel plate anchor bolts cannot be mounted is also solved; in the installation process of the anti-overturning anchor bolt system, by adjusting the construction sequence of part of steel structure machining, conflict between anchor plate installation and upper and lower anchor plate rib plates and steel box girders can be avoided in time; by adjusting the installation sequence of the upper and lower anchor plates, common problems that special-shaped pier bolt holes are difficult to install and original bridge displacement is limited are avoided; by installing an anti-overturning monitoring device, the stability of the girder bridge structure in the operation stage can be mastered in real time.

Description

technical field [0001] The invention relates to a maintenance method for a single-column pier, in particular to a maintenance method for a super-high single-column pier. Background technique [0002] An overpass is located at the junction of an expressway and another expressway. After review, the 7th and 8th joints of the ES ramp are simply supported steel-mixed composite beams, and the anti-overturning stability coefficient is less than 2.5, only 1.14 and 1.24, the support reaction force and lateral stability coefficient do not meet the requirements, and it is necessary to install anti-overturning anchor bolt systems between the three pier bodies and beam bodies, and install an anti-overturning monitoring system. [0003] According to the conventional construction technology, first set up brackets or climbing vehicles for construction, as a construction platform, measure the pier columns on site, determine the size, and then return to the site for processing, and then trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D19/02
CPCE01D19/02E01D22/00
Inventor 茅卫生叶林陶戴邦陈骏军张明金玉珠
Owner LUPU BRIDGE MAINTENANCE & MANAGEMENT BRANCH SHANGHAI MUNICIPAL CONSERVATION MANAGEMENT
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