Coastal deep foundation pit steel pipe column and bottom plate waterproof joint construction structure and method

Abstract

The invention discloses a coastal deep foundation pit steel pipe column and bottom plate waterproof joint construction structure and method. The coastal deep foundation pit steel pipe column and bottom plate waterproof joint construction structure comprises a foundation pit steel pipe column, a stratum, a foundation pit bottom plate and a steel pipe stand column pile, wherein a conical pit with the central axis of the foundation pit steel pipe column as the axis is formed in the top of the stratum; a chiseling section is arranged on the side wall of the steel pipe stand column pile; waterprooflayers are arranged between a concrete cushion and the foundation pit bottom plate, the top of the steel pipe stand column pile and the chiseling section; and a waterproof coating layer is arranged between the foundation pit steel pipe column and the foundation pit bottom plate. The coastal deep foundation pit steel pipe column and bottom plate waterproof joint construction structure and method have the beneficial effects that the top of the steel pipe stand column pile and the concrete cushion are separated through the foundation pit bottom plate and the waterproof layers in the conical pit,and the problem that in an existing structure, stratum corrosive water is prone to permeating the contact face of the concrete cushion and the top of the steel pipe stand column pile, and consequently the foundation pit steel pipe column is corroded is solved; and the waterproof effect is effectively improved, the quality and safety of a foundation pit are guaranteed, and construction period delay and economic losses caused by leakage point repairing treatment are avoided.

Description

technical field [0001] The invention relates to the field of building technology, in particular to a construction structure and method for a steel pipe column and a bottom plate waterproof joint of a coastal deep foundation pit. Background technique [0002] With the development of urban construction and the increase of population density, more and more attention has been paid to the development and utilization of underground space. Various types of underground projects and large-scale deep foundation pit projects are increasing. Efficient and economical deep foundation pit construction methods are particularly important. . Existing common deep foundation pit support waterproof construction structures such as figure 1 As shown, the main construction procedures of the waterproof construction structure are as follows: (1) construction of foundation pit enclosure structure; (2) construction of steel pipe column pile 7, construction of foundation pit steel pipe column 1: insert...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem that the existing foundation pit steel pipe column and floor waterproof joint construction structure cannot be applied to the coastal environment, and to provide a coastal deep foundation pit steel pipe column and floor waterproof joint construction structure, including the foundation pit steel pipe column, stratum and a steel pipe column pile; the bottom of the steel pipe column pile is inserted into the stratum; the bottom of the foundation pit steel pipe column is inserted into the steel pipe column pile; the top of the formation is provided with a bottom lower than the The conical pit at the top of the steel pipe column pile; the slope surface of the conical pit and the top of the formation are laid with a concrete cushion; the side wall of the steel pipe column pile above the bottom of the conical pit is provided with a chisel section ; The top of the concrete cushion, the chisel section and the top of the steel pipe column pile are laid with a waterproof layer; the side wall of the steel pipe column of the foundation pit is provided with a waterproof coating layer and a water-stop steel plate ring; the waterproof layer The top and the outer side of the waterproof coating layer are provided with foundation pit floor

Images