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Construction method for quickly assembling the transverse block of a bridge substructure

A construction method and block technology, which is applied to bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of difficult control of hoisting elevation and axis deviation, slow filling material strength, and low positioning accuracy, so as to improve productivity Position accuracy and stability, improving cable-staying conditions, and improving construction efficiency

Active Publication Date: 2019-01-08
BEIJING URBAN CONSTR ROAD & BRIDGE GROUP +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for quickly assembling bridge substructures in horizontal blocks, which solves the difficulty in controlling the hoisting elevation and axis deviation of the traditional prefabricated bridge substructures, low positioning accuracy, and problems with filling materials between enlarged foundations. Technical problems of slow strength and long construction period

Method used

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  • Construction method for quickly assembling the transverse block of a bridge substructure
  • Construction method for quickly assembling the transverse block of a bridge substructure
  • Construction method for quickly assembling the transverse block of a bridge substructure

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Embodiment Construction

[0073] In this embodiment, the prefabricated pier column cover beam 13 is integrally prefabricated in the form of a cover beam connected to a cylindrical pier; the pier column foundation 17 is in the form of a cast-in-place enlarged foundation, and the top of the expanded foundation is provided with a cup mouth 20, and the prefabricated pier column cover beam 13 The pier column extends 1.6m into the inside of the cup mouth 20, and the prefabricated pier column cover beam 13 and the pier column foundation 17 are connected by setting a wet joint in the form of a cup mouth.

[0074] Such as Figure 1-13 As shown, the construction method of the rapid assembly of horizontal blocks of the bridge substructure includes the following steps.

[0075] Step 1. Integrated construction of the prefabricated pier column cover beam 13; wherein, the lower part of the pier column of the prefabricated pier column cover beam 13 is provided with a steel plate hoop 18, and the outer surface of the s...

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Abstract

The invention relates to a construction method for quickly assembling the transverse block of a bridge substructure, which comprises the following steps: 1, integrated construction of a precast pier column cover beam; Wherein the lower part of the pier column of the precast pier column cover beam is provided with a steel plate hoop, and shear nails are welded on the outer surface of the steel plate hoop; 2, excavate that foundation pit and temporarily supporting the foundation pit; 3, constructing a concrete cushion layer at the bottom of the foundation pit; 4, constructing pier column foundation: the pier column foundation adopts cast-in-place enlarged foundation, and a cup mouth is arranged at the top of the enlarged foundation, and a ring of anchor plates are embedded around the top ofthe cup mouth; 5, performing hoisting and positioning of the cover beam of the precast pier column; 6, backfilling the foundation pit; 7, hoisting the main girder is in place. The invention solves thetechnical problems that the lifting elevation and the axis deviation of the traditional prefabricated bridge substructure are difficult to control, the positioning accuracy is low, the strength of the filler between the expanded foundation and the expansion foundation is slow, and the construction period is long.

Description

technical field [0001] The invention belongs to the field of bridge engineering, and in particular relates to a construction method for quickly assembling bridge substructures in horizontal blocks. Background technique [0002] With the deepening of China's urbanization process, the demand for urban transportation has grown rapidly, the number of urban transportation construction projects has increased year by year, and the construction of transportation networks in large cities has entered a stage of acceleration. About a quarter of the vast highway bridge population is obsolete or non-functional; that is, thousands of bridges need to be repaired, reinforced, or replaced. The renovation and upgrading of bridges is undoubtedly a good thing in the long run, and it is necessary; but in the present, it will bring great troubles to daily traffic. Breaking off the traffic and detours will not only cause traffic chaos, but also cause delays and delays for users. Unnecessary fuel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 郭勇夫王海军王君宇付涛李亮辉刘晓鸣马连友柴东然
Owner BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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