巴基斯坦冲积平原区PKM高速公路桥梁桩基承载力的计算分析

Calculation and Analysis on Bearing Capacity of Bridge Pile Foundation of PKM Motorway in Pakistan Alluvial Plain

在建的巴基斯坦PKM高速公路项目,根据业主要求需采用美国标准。为满足合同要求,对基于美国桥梁设计规范的桩基承载力计算从设计方法、参数指标选取、地下水位、群桩效应等多方面进行了分析。采用美国规范ASTM D1143-07进行桩基竖向抗压静载试验,结果表明,桩基承载力、沉降值均满足规范要求。

PKM motorway project is now under construction in Pakistan.According to employer s requirements,the American specifications shall be adopted.To meet the contract,the calculation of pile foundation bearing capacity based on the AASHTO LRFD bridge design specifications is studied from design method,parameter index selection,underground water level and group pile effect etc..American standard ASTM D1143-07 was adopted for test method for deep foundations under static axial compressive load in this project as per the client s requirement and test results show that the bearing capacity and settlement value of pile foundation meet the standard requirements.