软土地区船坞底板桩筏基础设计方法的改进

Modification for design of piled raft foundation of dock in soft soil

在单桩、群桩、筏板刚度计算基础上,利用群桩对筏板的相互作用系数,运用叠加原理,得到了桩筏基础的整体刚度和荷载分担规律,计算过程大大简化。对单桩桩筏基础进行离心模型试验,并将计算结果和试验结果进行对比分析,验证了该方法的正确性。

Based on the stiffness of single pile, pile group and raft in isolation, the interaction factor of pile group on raft with the principle of superposition is employed to obtain the overall stiffness of pile-raft system and the load carried by pile group and raft respectively, by which the calculation procedure is greatly simplified. Centrifuge model tests are performed to examine the load transfer characteristics of a single pile and a comparison between the experimental results and the calculated results is carried out, which verifies the correctness of the method.