Structure of standard steel forms for constructing thin-wall high pier groups with four sides being variable cross sections by form turnover

Abstract

The invention discloses a structure of standard steel forms for constructing thin-wall high pier groups with four sides being variable cross sections by form turnover. The structure is characterized in that each standard steel form comprises standard forms in the transverse direction of a bridge 1, standard forms in the longitudinal direction of the bridge 2 and slope reducing forms 3; the slope reducing forms 3 are arranged at the corners between the standard forms in the transverse direction of the bridge 1 and the standard forms in the longitudinal direction of the bridge 2; the heights of the three types of forms are all equal to the height L of a single construction section; the number of modulus sections of the slope reducing forms 3 is equal to group height h / single construction section height L; the slope ratio of the slope reducing forms 3 is equal to the slope ratio of pier bodies and the slope ratio i of the high pier groups; and the top width An and Bn of each slope reducing form increases progressively from top to bottom based on single construction section height L / pier body slope ratio i width. The structure can effectively solve the problems of large number of intermediate form blocks, high amount of processing, high dismounting frequency, labor and time wasting and multifarious construction processes of the existing forms adopting form turnover and has high construction efficiency and good formed high pier appearance quality.

Description

technical field [0001] The invention relates to a construction formwork structure of a thin-walled high pier group turning-over method with variable cross-section. Background technique [0002] At present, whether it is a high-speed railway or a highway, there are more and more high-pier long-span bridges. The speed of high-pier construction restricts the overall construction period, especially the construction of high-pier groups. The quality of the body template plays a decisive role. At present, the construction of high piers adopts the overturning method, the climbing form method, and the sliding form method. The latter two are generally only used for bridges with a small number of pier heights because of the large one-time investment, while the construction of high pier groups generally adopts the overturning method of steel formwork. Construction mostly. The disadvantage of the overturning method of construction is that the appearance quality of the poured pier body ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a standard steel formwork structure with thin-walled high pier groups with variable cross-sections on all sides, which is reasonable in design, simple and practical, and easy to operate, and can effectively solve the problem The existing formwork has the disadvantages of a large number of intermediate formwork blocks, a large amount of processing, a large number of disassembly times, labor and time-consuming, complicated construction procedures, and poor appearance quality of the formed high piers.

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