Supporting leg type underground continuous wall construction method

Abstract

A leg type diaphragm wall construction method of the invention belongs to the architecture construction technique field, which comprises: determining each axis control point; constructing guide walls; preparing mud slurry of walls mud for walls protection to stabilize the groove walls; constructing grooves; constructing legs; processing the diaphragm steel reinforcement cage; processing legs steel reinforcement cage which is aligned and connected to the diaphragm steel reinforcement; installing the steel reinforcement cages; selecting joints; installing joints and grouting the underwater concrete guide pipe and cleaning holes; grouting the underwater concrete; uplifting the joint pipe; grouting the wall bottom. The method can be applied in the ground with fluctuating and hard rock surface and in the ground which cannot satisfy the anti-displacement and anti-turning requirements, has good properties of soil and water blocking, anti-seepage and endurance, has positive action on the super-deep foundation pit bearing and enclosing with high economy benefit, and can greatly save cost with small noise and pollution compared with the whole diaphragm wall construction.

Description

technical field [0001] The invention belongs to the technical field of building construction technology, and specifically designs a construction method of an underground continuous wall with legs. Background technique [0002] Diaphragm wall technology originated in Europe, it was developed according to the method of drilling wells and oil drilling using mud and pouring concrete underwater, and it has become an effective technology in underground engineering and deep foundation construction. Generally, the underground diaphragm wall can be defined as: using various trenching machinery, with the help of the mud wall protection, dig a narrow and deep trench underground, and pour appropriate materials in it to form a waterproof (water) , continuous underground walls with retaining and load-bearing functions. After decades of development, the underground diaphragm wall technology has become quite mature, and has been and is being used in many aspects of foundation engineering i...

AI Technical Summary

Problems solved by technology

However, there are also some shortcomings in the underground diaphragm wall. In underground engineering, the rock surface of the block is shallow, the height difference is different, the excavation of the foundation pit is deep, and the weak stratum (passive soil or strong weathered rock stratum, etc.) at the bottom of the foundation pit is relatively weak. In the shallow case, the general underground diaphragm wall construction scheme cannot meet the requirements of displacement and anti-overturning