Underground continuous wall reinforcing cage rigid connecting joint and construction method thereof

Abstract

The invention discloses an underground continuous wall reinforcing cage rigid connecting joint and a construction method thereof. The connecting joint comprises a groove wall, a unit groove section underground continuous wall reinforcement cage, concrete, H-shaped steel, angle steel and a water stop belt thereof, a rectangular lock pipe and a semicircular lock pipe, wherein the rectangular lock pipe and the semicircular lock pipe together form a special joint box; the H-shaped steel is used as the rigid connecting joint for connecting two adjacent unit groove section underground continuous wall reinforcement cages; vertical through-length angle steel is symmetrically arranged on the outer side of the H-shaped steel; the semicircular lock pipe comprises a semicircular steel pipe, an inner supporting plate and a thin steel plate; the thin steel plate is fixed at the diameter port of the semicircular steel pipe; and the rectangular lock pipe is arranged at the thin steel plate at the diameter port of the semicircular steel pipe. The connecting joint and construction method effectively solves the problem of flow around the concrete pouring of the underground continuous wall, better realizes the underground continuous wall reinforcing cage rigid connecting of each unit groove section, is convenient for field construction operation, allows the special joint box to be reused, has relatively low construction cost, and has great popularization and application values.

Description

technical field [0001] The invention relates to the construction field of building underground engineering, and more specifically relates to a rigid connection joint of an underground continuous wall reinforcement cage made of H-shaped steel and a special joint box and a construction method. Background technique [0002] As a supporting structure, the underground diaphragm wall is widely used in the excavation of underground engineering foundation pits such as subway stations and high-rise buildings. It can also be used as the outer wall of the underground engineering structure. The construction steps of the underground diaphragm wall mainly include: guide wall construction → excavation of the unit trough section → bottom cleaning and grout replacement → lowering the joint structure → fabrication and placement of the steel cage → pouring concrete for the unit trough section → connecting adjacent unit trough section walls rise to form a closed reinforced concrete envelope. ...

AI Technical Summary

Problems solved by technology

With the existing structural form of the connecting joint, during the concrete pouring process of the underground diaphragm wall, the phenomenon of concrete flow around the joint often occurs, which affects the normal construction of the next trough section and the realization of the rigid connection of the reinforcement cage in the adjacent trough section, and Increased consumption of concrete

For the existing H-shaped steel joints, the common anti-winding measures are welding anti-winding iron sheets outside the H-shaped steel side plates, or backfilling sand bags outside the H-shaped steel joints, or using boss-shaped I-shaped steel joint boxes, etc., but After taking these measures, the problem of concrete bypass still exists, and these measures are not convenient for construction site operation

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