An underground continuous wall structure using a spliced ​​steel cage and its construction method

Abstract

The invention discloses an underground continuous wall structure using a spliced ​​steel cage and a construction method thereof. The underground continuous wall structure comprises: a wall body, a plurality of steel cages are arranged; the steel cage comprises: vertical stress steel bars, vertical positioning Reinforcing bars, inner stirrups and outer stirrups; the inner stirrups in turn wrap around two rows of vertically stressed steel bars located at two opposite positions at the ends, and both ends of the inner stirrups are located in the two rows of vertical stress bars. The inner side of the stressed steel bar; the outer stirrups are wound around two rows of vertical stressed steel bars in turn. The vertical stressed steel bars located at the two positions corresponding to the open ends of the inner stirrups, and the two ends of the outer stirrups are located in the two rows of vertical stress bars. The outer side of the stressed steel bar; the outer sides of the two sides of the open end of the inner stirrup are fixedly connected with the vertical positioning steel bars at the corresponding positions, and the inner sides of the two sides of the open end of the outer stirrups are fixedly connected with the vertical positioning steel bars at the corresponding positions. The invention maintains the traditional underground continuous wall with high rigidity and good water-stopping effect, and the reinforcement cage can be placed flexibly and conveniently.

Description

technical field [0001] The invention relates to the technical field of building structures and foundation pit engineering, and more particularly to an underground continuous wall structure using a spliced ​​steel cage and a construction method thereof. Background technique [0002] With the increasing scale of underground space development and utilization, the demand for building underground space under complex construction conditions is increasing. At present, the commonly used vertical support systems are usually divided into two types: underground diaphragm wall system and pile system. The underground diaphragm wall system is safe and reliable, but has the following disadvantages: 1. Due to the large volume of the steel cage, a large number of steel bars need to be installed in order to maintain the rigidity and stability of the steel cage itself, resulting in waste of steel and increased workload; 2. Volume Huge steel cages require the use of large hoisting equipment (us...

AI Technical Summary

Problems solved by technology

The underground diaphragm wall system is safe and reliable, but has the following disadvantages: 1. Due to the large size of the reinforcement cage, a large number of reinforcement bars need to be installed in order to maintain the rigidity and stability of the reinforcement cage itself, resulting in a waste of steel and an increase in workload; 2. Volume The huge steel cage requires the use of large hoisting equipment (usually two sets are required to work at the same time) and a large area of ​​work site, which cannot adapt to a more complex construction environment

The construction of the pile system is relatively flexible and the cost is low, but it has the following disadvantages: 1. Due to the discontinuity of the pile, it is generally necessary to install a water-stop curtain, and there are many procedures; 2. The joint force performance of the pile and the water-stop curtain is poor; 3. .Waterproof performance is poor, and it is difficult to detect and repair water leakage points

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