扩底桩技术在基坑工程中的应用

Application of Belled Pile Technology in Foundation Pit Engineering

传统的钻孔灌注桩技术被广泛应用于我国淤泥土,沙土等地层,但随着高层建筑高度的提升,地下室层数也逐渐提高,因此需要对基坑周边的建筑进行保护.在复杂地层中,常规的桩体可能满足不了强度和渗水性的要求,在实际施工过程中通过采用扩大桩头的形式可以满足此要求,通过在一工程中的应用以期对今后类似工程提供参考.

Traditional bored pile technology has been widely used in silt,sand and other strata in China.However,with the increase of the height of high-rise buildings,the number of basement floors has gradually increased,so it is necessary to protect the buildings around the foundation pit.In complex strata,conventional piles may not meet the requirements of strength and seepage.In the actual construction process,this requirement can be met by enlarging the pile head.Through the application of belled pile technology in a project,it can provide reference for similar projects in the future.