桩间距及桩帽宽度对桩-网复合地基桩身弯矩的影响

以广东沿海某城市火车站超大面积深厚软土采用桩网复合地基进行软土地基处理工程为例，利用FLAC3D数值分析软件，研究不同桩间距、桩帽宽度对桩身弯矩的影响。研究发现，桩间距的增大会使桩身弯矩增大，桩帽宽度的增大会减小桩身弯矩，但桩间距的变化对桩身弯矩的影响更明显。

Influence of Pile Spacing and Pile Cap Width on Bending Moment of Pile for Pile-net Composite Foundation

Taking the treatment engineering by pile-net extra-large area at the railway station in a coastal city in composite foundation against the deep soft soil in Guangdong as the example, the influence of the pile spacing and the pile cap width on bending moment of the pile body is studied with FLAC3D numerical analysis software. The study findings include that the increment of pile spacing will give rise to the increment of bending moment, while the increment of pile cap width will reduce the moment; however the change of pile spacing affects the moment more significantly.