Device for steel cover box with bottom of deep water high-rise pile cap by hoop-embracing method and construction method

Abstract

The invention discloses a device for a steel cover box with a bottom of a deep water high-rise pile cap by a hoop-embracing method and a construction method. The device comprises a plurality of concrete tubular piles, hoops arranged on the concrete tubular piles and the steel cover box connected to the hoops, wherein the steel cover box comprises a bottom plate and a side plate fixedly connected to the bottom plate; the bottom plate comprises a plurality of bottom modules, a bottom sealing plate fixedly connected to the bottom modules and concrete on the bottom sealing plate; the bottom modules are fixedly connected to the hoops; each of the hoops comprises two semi-circular steel plates which are fixedly connected to the concrete tubular piles through high-strength bolts; corbels are arranged on the semi-circular steel plates; and the bottom modules are fixedly connected to the corbels. According to the device disclosed by the invention, the quality and safety stability of a steel cover box technology are guaranteed, so that a project is constructed with a relatively low cost and the minimum risk, the problem that the steel cover box with the bottom is free of supporting points on the concrete tubular piles is solved, the problem that the steel cover box which is relatively large in planar dimension is hard to hoist integrally is solved, and the application range of a deep water high-rise pile cap construction technology is expanded.

Description

technical field [0001] The invention relates to the technical field of building foundation construction in water, in particular to a device and a construction method for a deep-water high-pile cap with a hoop method and a bottomed steel casing. Background technique [0002] During foundation construction in water, it is generally necessary to build a cofferdam project for drainage and foundation construction. The so-called cofferdam is to build a protective building around the foundation to separate the water and form dry construction conditions for construction after drainage. [0003] Generally, when steel sheet pile single-wall steel cofferdam is used, it is required that the depth of the steel sheet pile buried in the soil must reach the minimum depth requirement, so as to meet the structural safety of the steel sheet pile in the foundation construction, as well as the anti-slip and anti-overturning of the cofferdam, etc. Stability requirements. Due to the soil quality...

AI Technical Summary

Problems solved by technology

Although the double-wall steel cofferdam can withstand relatively large lateral pressure and can ensure the safety during foundation construction, the material consumption of the double-wall steel cofferdam is large, the construction procedures are many and there are many marine operations on the water. And the support is difficult to remove, the cost is high, and if it is not removed, it will hinder the smooth flow of water

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