诠释基桩承载力之波动方程分析应用

Interpreting pile capacity from wave equation analysis

基桩承载力之试验方法包括常见之静载重试验和近期发展出的高应变动力试桩。其中静载重试验所耗费人力及物力颇高,施做过程亦具危险性,经常无法得到完整的试桩曲线,造成诠释之不便与困扰。鉴于此,本研究采波动方程分析仿真桩载重试验,配合现地土壤之标准贯入值,藉迭代方式修正材料性质,以使分析结果合乎试验资料,并建立外插程序方便各式诠释法使用,其结果经验证符合实际状况。

Pile load tests, including static load test, dynamic load test, are often used to interpret the pile capacity. Among these tests, static load one is conducted commonly. It requires a lot of labor work and expense, and the installation causes danger. The test data sometimes is incomplete and unavailable for interpreting the capacity. This study uses wave equation analysis to model pile load test and iteration method to modify nonlinear material properties from SPT-N values. The test data is modeled and extrapolated to make easy access from the interpretations. Results are verified with the field data and other predictions.