1.6-degree parabolic extralarge pier measuring and pier body linear control method

Abstract

The invention discloses a 1.6-degree parabolic extralarge pier measuring and pier body linear control method which comprises a pier measuring method and a pier body linear control method. According to the pier measuring method, control networks are adopted for measuring, the control networks are in quadrangle structures, control points are arranged at the control networks, the control networks include a horizontal control network and an elevation control network, wherein the horizontal control network is distributed in a quartered control network mode, the elevation control network is distributed in a five-share elevation control network mode, base line edges of piers and all the lines of control networks are connected for measurement, and the pier bodies are in parabolic hollow structures. The linear control method comprises the steps of central positioning measurement for hollow piers, and elevation measurement and squareness measurement for the hollow piers, and through measurement on the center and elevation of the hollow piers as well as the squareness of the hollow piers, reference is provided for controlling the elevation presetting-height value. The method disclosed by the invention is simple and convenient to operate, high in pier measurement speed and accurate in control precision; and meanwhile, the pier body linear shape is effectively controlled, the engineering safety coefficient is improved, the control cost is low, and the work efficiency is high.

Description

technical field [0001] The invention relates to the technical field of measurement and construction of extra-large bridge piers, in particular to a 1.6-order parabolic super-large bridge piers measurement and pier line shape control method. Background technique [0002] With the continuous and rapid development of the national economy, my country is currently in a period of rapid development of long-span and deep-water bridge construction. The use of advanced design and construction technology to achieve the construction goals of saving investment, shortening the construction period, and ensuring safety has always been pursued by the engineering community. . For example, the Zongmugou Bridge has a total length of 834.12 meters and is located in the "V"-shaped branch ditch of Zongmugou, Qunying Village, Zongmu Township, Baishui County, Shaanxi Province. The bridge site is located in the loess gully area, with steep terrain and deep valleys; meters, ranking first in Northwest ...

AI Technical Summary

Problems solved by technology

[0003] The traditional bridge pier construction method is to support the formwork on the underground pile foundation, and then pour concrete inside the formwork. During the construction process, there is a lack of monitoring of the pier body, and the settlement of the pier is not considered during the construction process of the pier body. value and vertical deformation of the pier, the construction of piers up to hundreds of meters must consider the influence of geology, wind and other related factors on the pier, otherwise it will easily lead to serious deformation of the pier in the later stage, posing a safety hazard

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