Viaduct pier construction method

Abstract

The invention relates to a viaduct pier construction method. The method mainly comprises the following steps: foundation excavation, scaffold building, steel bar construction, formwork installation, temporary supporting, concrete pouring, concrete curing, formwork removal operation and the like. The supporting equipment comprises a bottom plate, an angle adjusting device and an abutting device. According to the invention, the following problems existing in the existing template supporting process can be solved: when a traditional formwork is supported, a large number of inclined wood supportsneed to be arranged, generally, one end of each wood support abuts against the top end of a vertical keel, the other end of each wood support abuts against a foundation pit sheet pile, supporting at the top end and the bottom end is unstable, the occupied area is large, material transportation and observation of the solidification condition of concrete are inconvenient, and time and labor are wasted in the dismounting and mounting process; and b, a traditional supporting instrument easily generates lateral pressure on the formwork, so that the formwork is easily deflected, and when the formwork is erected on the ground with the complex terrain, the erecting cost is high, and the firmness cannot be effectively improved.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for viaduct pier construction. Background technique [0002] With the rapid development of the economy and the substantial increase of the urban population, the problem of urban traffic has increasingly become the center of people's attention. Therefore, in order to relieve the driving pressure, many cities build viaducts in areas with congested traffic. In places where it is difficult to widen, building viaducts can evacuate traffic density and improve transportation efficiency. In addition, on expressways or railways between cities, in order to avoid plane crossings with other lines, save land, and reduce roadbed subsidence in certain areas, embankments may not be used. When using a viaduct, when the viaduct is erected, it is necessary to build the bridge pier to jack up the bridge. The formwork for the bridge pier is mostly made of steel for...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the economy and the substantial increase of the urban population, the problem of urban traffic has increasingly become the center of people's attention. Therefore, in order to relieve the driving pressure, many cities build viaducts in areas with congested traffic. In places where it is difficult to widen, building viaducts can evacuate traffic density and improve transportation efficiency. In addition, on expressways or railways between cities, in order to avoid plane crossings with other lines, save land, and reduce roadbed subsidence in certain areas, embankments may not be used. When using a viaduct, when the viaduct is erected, it is necessary to build the bridge pier to jack up the bridge. The formwork for the bridge pier is mostly made of steel formwork, and the surrounding steel formwork is mostly connected by bolts. During the pouring process, due to the large lateral pressure of the formwork, it is inevitable Excessive deformation occurs, therefore, it is necessary to set up peripheral diagonal supports during the construction process to ensure that the formwork will not be deformed and affect the construction quality

[0003] However, the following problems exist in the existing formwork support. a. Traditional formwork support needs to be provided with a large number of oblique wooden braces. Generally, one end of the wooden brace is placed on the top of the vertical keel, and the other end is placed on the sheet pile of the foundation pit. The support is unstable and occupies a large area. It is inconvenient to transport materials and observe the solidification of the concrete. Inclination phenomenon, and when erected on the ground with complex terrain, the construction cost is high and the firmness cannot be effectively improved

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