深大基坑分段采用多种支护形式联合支护的工程应用

Partitions and Muti-supports-protections Form's Application in a Deep and Large Excavation Engineering

介绍广东中山某深大基坑分段采用旋挖钻孔桩+锚索、PHC管桩+锚索、加强型复合土钉墙联合支护的工程应用,其位移监测结果满足要求,基坑稳定,证明深基坑分段采用不同支护形式联合支护是处理复杂地质条件和环境条件的安全、经济、环保的绿色支护方案,其实践应用对类似情况的深大基坑支护工程设计与施工具有重要的参考意义。

By introducing an application of combined support with revolving digging cast-in-place bored pile with prestressed anchor cable,and PHC pipe pile with prestressed anchor cable,and strengthened composite soil nail wall in a deep and large excavation engineering, Zhongshan,Guangdong. The monitoring results show that,the displacement meet the requirements,the stability of foundation pit. It proved that segmented using different support combined support in excavation is the security,economic,green environmental protection treatment supporting scheme under complicated geological and environmental conditions. Its practical application has important reference for similar situations deep excavation engineering design and construction.