中文摘要：

通过某大型码头桩基工程的现场试验结合数值分析研究了水平荷载作用下大直径嵌岩钢管混凝土桩的工作机理。根据桩身变形、内力和地基抗力的测试结果分析了大直径嵌岩桩的水平承载特性、桩岩共同作用性状及套箱填砂对深水嵌岩桩水平承载力的影响。采用有限元方法并考虑桩岩（土）界面在受力后滑动脱开的影响，对试验结果进行了数值模拟，并进一步探讨了大直径嵌岩桩的合理嵌岩深度及其主要影响因素。

英文摘要：

Behavior of the large diameter rock-socketed CFST piles under lateral loads was studied based on field tests and numerical analysis for piles in harbour engineering. The horizontal capability and deformation of the large diameter rock-socketed piles were analyzed from the measured results of displacement and intemal force of piles. The interactive behavior of pile-rock and the influence of backfilled sand on horizontal capability were also discussed. Using FEM and considering the properties of pile-soil interface, the test results were simulated and the reasonable socketed length was studied.