【摘要】 负摩阻力是桩基问题中常见且尚未完全解决的问题。以往通过试验对中性点位置、下拉荷载的大小以及负摩阻力作用下桩基的沉降问题作了较为深入的研究,但均建立在桩周土固结沉降基础之上。对管桩的负摩阻力研究也有一定进展,但对桩芯土在负摩阻力中发挥的程度以及方式仍未完全弄清。指出了今后桩基负摩阻力研究需要开展的问题以及解决负摩阻力问题的措施。更多还原

【Abstract】 The problem of negative skin friction has not been totally solved.Based on consolidation of soil around the pile,the position of neutral point,downdrag and the settlement of pile foundation have been studied through tests.The study on pipe pile has made progress,but the role of inner soil in negative skin friction has not been completely found.The problems for further study and the measures for the problm of negative skin friction of pile foundation are also provided.更多还原