江番高速公路管桩竖向承载力试验研究

基于现场试验,探讨了管桩现场施工中的质量控制,并利用软件建立土体与桩共同作用的数值模型,将有限元应用于桩-土结构进行三维有限元数值计算。分析了预应力管桩在竖向荷载作用下的承载力特性以及变形特性,并将桩在逐级加载下的沉降规律与现场静载实测结果做了对比,验证了管桩施工质量控制对承载力的影响,其结果对以后桩-土模拟及桩基工程设计有一定的参考价值。

Experimental Research on Vertical Bearing Capacity of PHC-pile of Jiangpan Expressway

Based on the field test results, discussed the quality control of the pipe pile in construction, and applied software to build up the pile-soil system numerical model for the 3d finite element numerical calculation. Analyzed the bearing capacity characteristics and deformation characteristics of the PHC-pile under vertical load, and made the contrast with the settlement regularity under gradually loading and the static load test results. It can test the effect of bearing capacity with pile construction quality control, and provide a reference for the pile-soil numerical simulation and the pile-soil pile foundation engineering design.