为研究桩底灌浆在桩端周围土体中引起的应力 ,基于桩底灌浆分析求得压力头梯度分布 ,采用有限元法分析了由灌浆产生的渗透力在桩端周围土体中引起的应力及其分布 .分析结果表明 ,灌浆在周围土体中引起的应力沿径向迅速衰减 ,主要作用范围集中在浆球内 .由于水泥砂或水泥砾石的刚度与强度很高 ,在研究灌浆桩的整体性能时 ,可将凝结后的浆球作为桩身的延伸部分予以考虑 In order to study the stress caused by the bottom grouting in the soil around the pile tip, the gradient distribution of the pressure head was obtained based on the grouting analysis of the bottom of the pile, and the stress caused by the seepage force caused by the grouting was analyzed by finite element method And its distribution.The results show that the stress induced by grouting in the surrounding soil rapidly decay in the radial direction and the main role is concentrated in the groud ball.Because of the high stiffness and strength of cement sand or cement gravel, When the overall performance, can be condensed ball as an extension of the pile body to be considered