水平荷载下桩身稳定性及土体扰动分析

通过数值模拟,对比基桩试验结果和模拟结果,验证计算模型的适用性。计算不同荷载等级下桩身的内力分布情况和位移变化,分析桩身稳定性;对桩周土体的受力状态进行分析,研究水平荷载对桩周土体的扰动情况。研究结果表明:在受到长期性的横向荷载作用时,桩身会受到持续的剪切作用,应定期进行桩身完整性检测;在水平荷载的作用下,基桩周围的土体会受到剪切和张拉作用。

Stability and disturbance of pile and soil under horizontal load

By numerical simulation,we compare pile test results and simulation results and verify the applicability of the calculation model,calculate the distribution of internal force and displacement of pile under different load levels to analyze the stability of pile,analyze the stress state of the soil to study the disturbance of the horizontal load to the soil.The research result shows that when the pile is subjected to long-term lateral loads,the pile will be subjected to continuous shearing action,and the integrity of pile should be tested regularly;under the horizontal loads,the soil around the pile is affected by the shear and tension.