Anti-circumvention enclosure device and construction method for underground diaphragm wall joints

Abstract

The invention belongs to the technical field of underground diaphragm wall joint construction. In order to solve the problem of traditional underground diaphragm wall joints preventing concrete from flowing around, the outer side of the I-beam is filled with sand bags for external sealing, which consumes manpower and material resources, takes a long time, and the joints are prone to water seepage. Provided are an underground diaphragm wall joint anti-circumvention enclosure device and a construction method. Weld the galvanized steel plate at the upper part of the inner side of the bottom flange of the joint I-beam and the lower part of the inner side of the top flange, bind the sealing plate on the back side of the web of the joint I-beam, and set the seam fixed on the guide wall on the top of the sealing plate Box; the galvanized steel plate opens in the shape of a trumpet during the lowering process, and the two rows of fixing rods outside the sealing plate are fixed; the top of the sealing plate and the joint I-beam upper and lower wing plates are welded with fixing ribs. It is suitable for joint construction of underground diaphragm wall, prevents concrete from flowing around during pouring, ensures joint construction quality, and improves joint shear resistance and anti-leakage capacity. Great operability and strong promotion. Popularized and applied in the construction of underground diaphragm walls, the application is novel and reliable, and the technology is mature and advanced.

Description

technical field [0001] The invention belongs to the technical field of underground continuous wall joint construction, and particularly relates to an underground continuous wall joint anti-circumvention enclosure device and a construction method. Background technique [0002] The hazards of the flow around the joints of the underground diaphragm wall mainly include the following two points: First, if the protruding concrete block is not removed, it will affect the lowering of the reinforcement cage of the lower diaphragm wall, so that the sealing reinforcement of the reinforcement cage cannot be close to the already poured underground. The web of the H-section steel of the continuous wall affects the lap width of the joint. There will be a dead corner under the protruding concrete block that cannot be brushed by the wall brush, and this piece will deposit mud, so that after the two walls are poured, there is a penetration between the two walls. After the foundation pit is ex...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the traditional underground diaphragm wall joints prevent concrete from flowing around, the external sealing of the I-beam with sand bags is used to fill the outside of the I-beam, which consumes manpower and material resources, takes a long time, and easily causes water seepage in the joints. Diaphragm wall joint anti-flow enclosure device and construction method

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