双排桩在软土深基坑支护中的应用  

Application of Double Row Piles in Soft Soil Deep Foundation Pit Support

作　　者：何胜晖 HE Shenghui(Nonferrous Mine Geological Disaster Prevention Center of Guangdong Province Guangzhou 510060,China)

机构地区：[1]广东省有色矿山地质灾害防治中心,广州510060

出　　处：《广东土木与建筑》2021年第6期50-52,共3页Guangdong Architecture Civil Engineering

摘　　要：在巨厚软土层、开挖深度8.5 m的深基坑支护设计实践中,由于局部地段受临近建筑物管桩基础的影响,不能使用桩锚支护,故采用双排桩支护结构,并对基坑内软土进行加固,以增大被动土压力。拟分析双排桩排距与桩深、支护体结构变形的影响关系,并与变形监测实测结果进行对比,发现随着桩距增大桩深减小,位移和沉降实测值比理论计算值小约50%。In the design practice of deep foundation pit with huge thick soft soil and excavation depth of 8.5 m,because the local section is affected by the pipe pile foundation of adjacent buildings,pile anchor support cannot be used,so double row pile support structure is adopted.The soft soil in the foundation pit is reinforced to increase the pressure of the passive soil.Intends to analyze the influence of the row distance of double row piles,the pile depth and the deformation of the supporting structure.The results are compared with the deformation monitoring results,and it is found that the pile depth decreases with the increase of pile distance.The measured displacement and settlement are about 50%smaller than the theoretical ones.

关 键 词：深基坑 支护 双排桩 监测 软土 位移 沉降 搅拌桩 

分 类 号：TU94+2[建筑科学—建筑技术科学]