Construction method of prefabricated underground diaphragm wall

Abstract

The invention discloses a construction method of a prefabricated underground diaphragm wall. The construction method comprises the steps that underground diaphragm wall body units are prefabricated; an underground diaphragm wall groove is excavated; rubber capsule bodies are pasted in a second groove and a third groove of each wall body unit; second steel parts and first steel parts are installed in gaps and fourth grooves in the wall units; a first wall body unit is put into the groove; a second wall body unit is inserted along the first groove of each wall body unit, so that a tenon of the second wall body unit is embedded into the first groove of the first wall body unit, and the second steel parts and the first steel parts are mutually tied; the subsequent wall body units are continuously inserted in the groove direction of the underground diaphragm wall, and liquid grouting bodies are injected into the bag bodies at the joints of the first wall body unit and the second wall body unit; cement-based grout is injected into a steel floral tube of the second steel part; after the multiple wall units are constructed, cement slurry is poured into gaps between the wall units and the grooves, and slurry in the gaps is replaced; and the steps are carried out until construction of the underground diaphragm wall is completed. According to the construction method, the construction speed is high, and the waterproof effect is good.

Description

technical field [0001] The invention belongs to the field of underground structure engineering, and in particular relates to a construction method of a prefabricated assembled underground continuous wall. Background technique [0002] At present, when excavating foundation pits in busy urban areas, the construction of traditional cast-in-place underground diaphragm walls often occupies roads for a long time, affects traffic, and has low construction efficiency, difficulty in ensuring construction quality, and extremely easy to cause adverse effects on the surrounding environment. The prefabricated underground diaphragm wall has the advantages of prefabricated batch standardized production, controllable quality, fast construction progress, etc., and meets the requirements of energy saving and environmental protection. [0003] The waterproof performance of the prefabricated underground diaphragm wall section itself is excellent, and the waterproof effect of the joints between...

AI Technical Summary

Problems solved by technology

At the present stage, the engineering mainly adopts post-pouring concrete and grouting at the joints to stop water. The construction is time-consuming and labor-intensive, and the construction effect is difficult to control, which can easily cause water leakage at the joints.

Images