Construction process for pier top section of hollow thin-walled high pier column

Abstract

The invention relates to a construction process for a pier top section of a hollow thin-walled high pier column. The pier column is constructed by using slip form equipment, wherein the slip form equipment comprises an external mold and an internal mold which is positioned in the external mold. The construction process for the pier top section of the hollow thin-walled high pier column comprises the following steps of constructing an embedded part when the slip form equipment slides to a variable section part of the pier column, wherein the embedded part comprises an embedded steel plate and an embedded reinforcement which is fixed on the embedded steel plate, wherein the embedded steel plate is arranged on the internal side of the pier column; dismantling the internal mold from the pier column; mounting a bracket on the embedded steel plate; mounting a prefabricated variable section template on the bracket; performing reinforcement construction on the pier column; pouring concrete tothe pier column; continuing to lift the external mold; and pouring the concrete to the external mold. According to the construction process for the pier top section of the hollow thin-walled high piercolumn, the method is simple, the labor intensity is reduced and the difficulty coefficient is reduced.

Description

technical field [0001] The invention relates to the technical field of bridge pier column construction, in particular to a construction process for the top section of a hollow thin-walled high pier column. Background technique [0002] With the development of highway traffic construction, there are more and more expressways in mountainous areas, and the proportion of bridges and tunnels in expressways is increasing. Due to the steep terrain and relatively large drop, bridges in mountainous areas are developing in the direction of large spans, cantilevers, and high piers. High piers of tens of meters or even higher appeared one after another. Generally, the high piers adopt hollow thin-walled piers, and the hollow thin-walled piers have relatively high torsional moment of inertia, so the stability is relatively good. [0003] At present, when constructing the top of hollow thin-walled high pier, the climbing formwork technology is used: after pouring a section of formwork, t...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem of low construction efficiency due to the high construction difficulty in the prior art, thereby providing a construction process for the top section of the hollow thin-walled high pier pier that reduces the construction difficulty and improves the construction efficiency

Images