Concrete bypassing preventing device with pulp stopping plates and concrete bypassing preventing construction method for H-shaped steel joint of wall chase of underground continuous wall

Abstract

A concrete bypassing preventing device provided with pulp stopping plates and used for an H-shaped steel joint of a wall chase of an underground continuous wall comprises two pulp stopping plates, wherein the two pulp stopping plates are respectively arranged on flange plates of an H-shaped water stopping steel plate of the underground continuous wall; one ends of the pulp stopping plates are fixedly connected with the flange plates of the H-shaped water stopping steel plate; the other ends of the pulp stopping plates are free ends; one of the pulp stopping plates is fixedly connected with the inside of one of the flange plates of the H-shaped water stopping steel plate; the other pulp stopping plate is fixedly connected with the outside of the flange plate on the other side of the H-shaped water stopping steel plate; the pulp stopping plates are galvanized iron sheets; the thicknesses of the galvanized iron sheets are 0.5mm; and the lengths of the galvanized iron sheets are longer than a reinforcement cage by about 500mm. During construction, the pulp stopping plate on the inner side of the flange plate on the lower side of the H-shaped water stopping steel plate is arranged at first, then the pulp stopping plate on the outer side of the flange plate on the upper side of the H-shaped water stopping steel plate is arranged, the free ends of the pulp stopping plates are not required to be connected with reinforcing steel bars, so that the free ends of the pulp stopping plates can be opened without limitation during pouring of concrete, and can be totally opened according to designed requirements, the poured concrete is effectively prevented from bypassing and entering an H-shaped steel web plate, and the problem of bypassing of the concrete at the joint can be well solved.

Description

technical field [0001] The invention relates to a building construction method and device, in particular to an anti-concrete bypass flow prevention device for an H-shaped steel joint slurry plate of an underground continuous wall groove section and a construction method for preventing concrete bypass flow. Background technique [0002] Under normal circumstances, the protective layer of the main reinforcement of the underground diaphragm wall is 50mm to 70mm, so the concrete may flow around the outside of the H-shaped steel and enter the adjacent unit grooves during the pouring process due to the lack of protection. Later excavation, punching, cleaning, etc. caused difficulties. [0003] In order to prevent the concrete from flowing around the outside of the H-shaped steel and entering into the H-shaped steel and adjacent unit grooves, the current construction method is: paste plastic foam boards within the entire length of the H-shaped steel, and fill sandbags or mud bags; ...

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide an implementable "concrete circumvention prevention device for the H-shaped steel joint of the underground diaphragm wall groove section and its construction method for preventing concrete circumvention", so as to overcome the "underground diaphragm wall joint anti-circumvention device" To solve the problem of concrete flow around the H-shaped steel joint of the underground diaphragm wall groove section during the construction of the ground connection wall

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