沉桩引起的超孔隙水压力及其消散的三维解析解  

3-dimension analytical formula for excess pore water pressure resulted from pile driving

作　　者：王旭东[1] 王伟[1] 宰金珉[1] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2002年第6期16-19,共4页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：江苏省应用基础基金(BJ97051)

摘　　要：给出了沉桩引起的初始超孔隙水压力沿深度线性增加和沿径向在桩周弹、塑性区内连续分布的简化计算公式;以Biot固结理论为基础,进一步推导并获得了超孔隙水压力消散的三维解析解。通过算例分析了土体参数对超孔隙水压力消散的影响,计算结果与实测结果的对比分析显示了两者较好的一致性。A formula for calculating initial excess pore water pressure resulted from pile driving in soft clay was presented,which can show initial excess pore water pressure distributes continuously in radial direction and increases linearly with the depth. Based on Biot's consolidation theory, a 3dimension analytical formula considering the dissipation of excess pore water pressure was achieved. The effects of soil parameters to excess pore water pressure were discussed, and calculating values were in good agreement with the measured values .

关 键 词：消散 沉桩 超孔隙水压力 三维解析解 桩围土 计算 

分 类 号：TU473[建筑科学—结构工程] TU44[建筑科学—土工工程]