双排高低桩作用机理及参数影响分析

Analysis of Mechanism and Parameter Effects of Double-row High-low Piles

运用Midas GTS NX数值模拟软件,首先对基坑工程的双排高低桩的桩土变形、位移、弯矩进行分析研究,接着进一步分析桩间土加固、后排桩嵌固深度、排桩间距等参数对双排高低桩的影响。结果表明:以上影响参数在一定范围内能减小围护结构的位移、内应力,但超过该范围则效果不佳。

By using Midas GTS NX numerical simulation software,this paper firstly analyzes the deformation,displacement and bending moment of double-row high-low piles in foundation pit engineering.It then researches the effects of soil reinforcement between piles,embedded depth of back-row piles and spacing of row piles on double-row high-low piles.The results show that the above parameters can reduce the displacement and internal stress of the enclosure structure within a certain range,but beyond this range,the effect is not good.