【作者】 王博； 汪志甜； 汪必达； 张骏； 黄凯；

【Author】 WANG Bo;WANG Zhitian;WANG Bida;ZHANG Jun;HUANG Kai;Anhui Transport Consulting & Design Institute Co.,Ltd;Scholl of Resource and Environmental Engineering;

【机构】 安徽省交通规划设计研究院总院股份有限公司； 合肥工业大学资源与环境工程学院；

【摘要】 以安徽芜湖长江二桥引桥桩基础工程项目为依托,采用数值模拟进行了管桩挤土效应对承载力时效性影响的研究。数值模拟结果表明,承载力时效性在砂土持力层中表现的不明显,但当持力层为黏土时较为明显,对工程具有显著的影响。当桩尖角小于90°,承载力随桩尖角的增大而增大;当桩尖角超过90°,承载力随着桩尖角的增大而减小;无桩尖时承载力大小与桩尖角等于40°时相近。更多还原

【Abstract】 Based on the pile foundation project of the approach bridge of the Second Wuhu Bridge crossing of the Yangtze River in Anhui Province,this paper studies the effect of pipe pile compaction on the Time-effect of the bearing capacity of single pile by numerical simulation.The results of numerical simulation show that the Time-effect of bearing capacity is not obvious in the sand bearing layer,but it is obvious when the bearing layer is clay,which has a great influence on the engineering application.When the pile tip angle is less than 90 degrees,the bearing capacity increases with the increase of the pile tip angle;when the pile tip angle exceeds 90 degrees,the bearing capacity decreases with the increase of the pile tip angle.The bearing capacity without pile tip is similar to that with pile tip angle equal to 40 degrees.更多还原