A construction method for rapid demolition of an overpass

A construction method and rapid technology, applied in the direction of bridge, bridge construction, bridge maintenance, etc., to achieve the effect of high safety factor, fast construction progress, and reduced impact

Active Publication Date: 2021-09-03
CHINA RAILWAY 12TH BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of dismantling and rebuilding construction of the separated overpass on the busy expressway, the present invention provides a quick dismantling construction method

Method used

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  • A construction method for rapid demolition of an overpass
  • A construction method for rapid demolition of an overpass
  • A construction method for rapid demolition of an overpass

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example

[0092] Kaiyang Expressway Reconstruction and Expansion Project T2 Overpass Demolition

[0093] Project Overview

[0094] The route marked by T2 runs southwestward, starting at K3214+967 (National Highway Network Stake Number) and connecting with the Encheng Interchange at the end of T1, and then crossing the provincial road S276 at K3217+000 and at K3218+300 Cross Jinjiang, set up Dahuai Interchange at K3230+363 to connect with National Highway G325, pass through the northwest corner of Dahuai Town, set up Dahuai service area at K3236+400, and then enter Yangjiang City; the route is in Yangdong District, Yangjiang City Basically run parallel to it on the north side of the national highway G325, set up the Nalong interchange to connect with the national highway G325, and finally reach the end of the bidding section, which is K3246+600, with a total length of 31.633km.

[0095] Application

[0096] There are 7 cross-line separation overpasses on the expressway in the T2 tender...

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Abstract

The invention belongs to the technical field of bridge maintenance and construction, in particular to a construction method for quickly dismantling an overpass. Solve the problem of dismantling and reconstructing the separated overpass on the busy expressway, including the following steps, S1 ~ construction preparation and site treatment; S2 ~ erecting temporary supports and protective supports; S3 ~ side span cutting and hoisting; S4 ~ piggyback system assembly ;S5~Closed traffic; S6~Removal of obstacles on the transport path; S7~Package system in place and pre-lifting; S8~Cutting arch legs; 2 sets of chainsaws are arranged on the same section, cutting synchronously, and the cutting time is controlled within 1 hour; S9 ~Beam body moving; S10~Beam body falling; S11~Beam body lowering; S12~Beam body breaking. The invention realizes that in the demolition process, the original road surface will not be polluted or damaged, and the serious impact on traffic is eliminated.

Description

technical field [0001] The invention belongs to the technical field of bridge maintenance and construction, in particular to a construction method for quickly dismantling an overpass. Background technique [0002] With the continuous high-speed development of my country's highway and bridge industry for many years, the peak period of highway and bridge construction has passed, and many bridges in the existing road system have gradually entered the maintenance and repair stage. As time goes by, their number will continue to increase, and the maintenance and reconstruction of dangerous old bridges will also attract more and more attention from the management, construction and other related parties in the industry. In order to minimize the adverse effects of the reconstruction and construction of many old and dangerous bridges on the normal traffic of the road system, the application of various bridge rapid construction technologies is imperative. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D24/00
CPCE01D22/00
Inventor 任学萍裴彦龙陈志浦远鹏欧阳浩徐彬李登科尹亚亚刘永东
Owner CHINA RAILWAY 12TH BUREAU GRP
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