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通过武进广播电视塔周边深基坑支护设计与施工的实例,介绍了一套深基坑支护的方案,解决了开挖深度深,地基中含水量大,周边环境敏感,特别是有电视塔这样需严重保护建筑物存在的基坑类型所存在的难题。该方案采用钻孔灌注桩与双重管高压旋喷桩结合的综合止水帷幕以及支护桩加对称钢管抛撑的支护方式解决了难题。本工程安全如期顺利完工证明了该支护方案安全、经济、有效。
Through the example of design and construction of deep foundation pit support around Wujin radio and TV tower, a set of plan of deep foundation pit support is introduced, which solves the problems of deep excavation depth, large water content in foundation and sensitive ambient environment, especially television Tower so serious need to protect the existence of the pit type of construction of the existing problems. The program uses the combination of bored piles and double-pipe high-pressure rotary jet grouting piles and the supporting way of supporting piles and symmetrical steel pipes to solve the problems. The safe completion of this project as scheduled proves that the support scheme is safe, economical and effective.