I-shaped steel joint structure for underground continuous wall and construction method for I-shaped steel joint structure

Abstract

The invention discloses a steel joint structure for an underground continuous wall and a construction method for the steel joint structure, belongs to the technical field of underground continuous walls and aims to provide a steel joint structure for the underground continuous wall which is simple and has a good water stopping effect. According to technical key points, the steel joint structure comprises a front terrae spacing, a rear adjacent terrae spacing and I-shaped steel which is connected between the front terrae spacing and the rear adjacent terrae spacing, wherein anchor bars are distributed among connecting parts between the I-shaped steel and the rear adjacent terrae spacing. The construction method mainly comprises the following steps of: (1) excavating a ground groove of the front terrae spacing; (2) manufacturing a reinforcement cage of the front terrae spacing, and arranging an I-shaped steel joint on the end part of the reinforcement cage of the front terrae spacing; (3) arranging the anchor bars; (4) hoisting and placing the reinforcement cage, and arranging a mud blocking joint pipe on the outer sides of the anchor bars; (5) performing cast molding on concrete; (6) excavating a ground groove of the rear adjacent terrae spacing, manufacturing a reinforcement cage, hoisting a joint pipe, hoisting and placing the reinforcement cage, and cleaning the anchor bars; (7) performing cast molding on the concrete; and (8) circulating the steps from (2) to (7) to form the continuous wall.

Description

technical field [0001] The invention relates to an underground diaphragm wall joint structure, more specifically, to an underground diaphragm wall I-shaped steel joint structure. Background technique [0002] The underground continuous wall is to perform trough-forming operation in advance to form a trough section of a certain length, hang a reinforcement cage in the trough section, pour concrete to form a unit wall section, and then connect the unit wall sections to form a continuous underground reinforced concrete wall. The underground diaphragm wall can be constructed under complex conditions, has a large construction depth, a large bearing capacity of supporting components, and good anti-seepage performance. It is the most reliable support method in foundation pit support. Especially in the sand layer, in order to achieve the water-stop effect, it is necessary to use the underground diaphragm wall, which is the most reliable support method. At present, the underground d...

AI Technical Summary

Problems solved by technology

After the underground diaphragm wall is greater than a certain depth, the huge water pressure will cause the water and sand on the outside to be brought into the foundation pit along the joints, which will bring a very large risk to the safety of the foundation pit

In addition, as the main side wall of the permanent structure, joint leakage will bring a lot of inconvenience to the normal use of the building, and there are also certain hidden dangers in the durability of the structure.

Images