基于正交试验设计的桩锚支护深基坑变形研究

Research on pile anchor support deep foundation pit deformation based on orthogonal experimental design

依托某基坑工程,对深基坑进行了多因素多水平的有限元数值模拟,通过正交试验设计和试验结果的极差和方差分析,得出了各因素对深基坑变形的影响程度及显著性,结果表明:超载对于基坑最大水平位移影响显著,锚杆位置影响显著性一般,其他因素如桩径、锚固力等对深基坑变形的影响较小。

Based on a foundation pit engineering, this paper made multi-factor and multi-level finite element simulation to deep foundation pit, through the orthogonal experimental design and test results range and variance analysis, gained the influence degree and significant of various fac- tors to deep foundation pit deformation, the results showed that： the overload had significantly influence to maximum horizontal displacement of foundation pit, the bolt position had significant influence, other factors such as the pile diameter, anchorage stress etc. had little influence to deep foundation pit deformation.