摘要
厦门某高层建筑筏板下分布有不同性质的岩土层,且各岩土层的承载力较高,若采用常规桩筏基础,地基土承载力得不到利用,造成浪费。本文通过在残积土层下部设置10根人工挖孔桩来弥补其承载力的不足,其他区域则采用天然地基的方案。通过有限元数值计算验证了在人工挖孔桩桩顶设置变形调节装置来调节不均匀沉降是合理的。目前本工程已进入上部结构的施工阶段,其设计理念可供同类工程参考。
There are rock and soil layers with different properties under the raft of one high - rise building in Xiamen. The different layers all have excellent bearing capacities. If we adopt the general pile - raft foundation, the bearing capacity of foundation soils could not be used and it was so wasteful. In this pa- per, we set ten manual hole digging piles in the residual soil area to make up the insufficient bearing. The natural foundation was adopted in the other area. The result of finite element numerical calculation showed that though setting settlement adjustors on the pile tops, the differential settlement of the raft me the requirements. Up to now the project has entered the upper structure construction phase. The design concept of this project can be applied and referred in the similar projects.
出处
《福建建筑》
2014年第12期84-86,共3页
Fujian Architecture & Construction
关键词
桩筏基础
天然地基
变形调节装置
不均匀沉降
Pile - raft foundation
Natural foundation
Settlement adjustor
Differential settlement
