Diaphragm wall joint and manufacturing method of diaphragm wall

Abstract

The invention discloses a diaphragm wall joint and a manufacturing method of a diaphragm wall. The diaphragm wall joint comprises two sections of first-stage walls in one foundation pit, wherein the sides of the two sections of walls are opposite; the opposite sides of the first-stage walls are respectively and fixedly connected with two joist steel webs; one section of second-stage wall is arranged in a middle foundation pit; and the second-stage wall is connected with the joist steel webs by adopting a sleeve valve tube for grouting. The manufacturing method of the diaphragm wall aims to manufacture the diaphragm wall. For the diaphragm wall joint, the second-stage wall is utilized to transit; the connecting position is fixed by the joist steels and grouted by a sleeve valve tube, thus having good structure adaptability, no water leakage, low possibility of water burst and sand burst, good water-stopping effect, and safety and reliability. In the manufacturing method, substage grouting is carried out on wall sections in the joint, and the fillers of the joist steel webs are washed and then grouted, thus realizing fast forming and firm connection for the joint, and avoiding the water burst and the sand burst.

Description

technical field [0001] The invention relates to an underground continuous wall joint in the field of engineering construction and a manufacturing method thereof. Background technique [0002] When carrying out underground engineering and deep foundation construction, it is usually necessary to build an underground diaphragm wall. The underground diaphragm wall is a narrow and deep foundation pit dug underground with the help of various grooving machines and the wall protection function of mud, and pouring appropriate materials in it to form a seepage-proof, soil-retaining and load-bearing function. Continuous underground walls. Generally speaking, the underground continuous wall is constructed in sections and periods according to the actual construction environment, so there are many sections of discontinuous walls, and finally these discontinuous walls need to be connected by various pouring methods. This structure is called a diaphragm wall joint. At present, there are ...

AI Technical Summary

Problems solved by technology

However, the initial setting time of the concrete must be well grasped during the pullout period of the circular joint. If the pullout is too fast, the concrete will fill the space in the joint. If the pullout is too slow, the joint will break or mud will be trapped, and water and sand gushing will easily occur; The form of the beam joint is to wash away the foam filler filled on the I-beam web due to construction needs before the connection, and then grout the connection in the foundation pit, but it is easy to cause the foam filler to not be washed clean. Mud, joints are washed out, damaged and tilted, resulting in water gushing and sand gushing

In fact, the deeper the foundation pit, the higher the water-stop effect on the joints of the underground diaphragm wall. If the water-stop effect of the joints is poor, water and sand gushing will occur, which will bury safety hazards, delay the construction period and cause economic losses

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