Underground diaphragm wall construction method used under low-clearance condition

Abstract

The invention relates to the technical field of dados or similar walls constructed by prefabricated parts and concrete including reinforced concrete at the scene, in particular to an underground diaphragm wall construction method used under the low-clearance condition. The method includes the steps that a plurality of circular holes of the equal diameter are formed in an underground diaphragm wall at first, and the circle centers of the circular holes of the equal diameter are located on the same horizontal line; then a rectangular groove is formed in the underground diaphragm wall, the rectangular groove covers all the circular holes, sections are manufactured on a reinforcement cage, and all the sections of reinforcement cage are integrally manufactured on the same rebar platform; the sections are hoisted into the rectangular groove, and main reinforcements at a groove opening of the rectangular groove are spliced in a straight thread mode; and finally concrete is constructed through a conduit pouring method. According to the method, a machine commonly used in a current market can serve as the construction machine, and there is no need to purchase other devices. Moreover, the construction technology is mature and reliable, construction difficulty is low, ground-to-wall construction under the low-clearance condition is realized, and the blank in the technical field is filled.

Description

[technical field] [0001] The invention relates to the technical field of retaining walls or similar walls constructed on site with prefabricated components and concrete including reinforced concrete, in particular to an underground continuous wall construction method for low headroom conditions. [Background technique] [0002] The underground diaphragm wall is a kind of trenching machine used on the ground for basic engineering. Along the peripheral axis of the deep excavation project, a long and narrow deep trench is excavated under the condition of mud retaining wall. After the trench is cleaned, it is hung in the trench Reinforcement cages, and then use the conduit method to pour underwater concrete to form a unit trough section. In this way, a continuous reinforced concrete wall is built underground as a water interception, anti-seepage, load-bearing, and water-retaining structure. The characteristics of this method are: small construction vibration, high wall rigidity, ...

AI Technical Summary

Problems solved by technology

However, the minimum height of the groove forming machine is currently 12m. For some construction environments where the clearance height is too small, the groove forming machine cannot work normally, which has brought obstacles to the construction of the underground diaphragm wall.

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