岩溶区嵌岩桩室内模型试验方案的优化分析

由于现场试验费用高且进行破坏性试验困难,利用室内模型试验对岩溶区嵌岩桩的承载特性进行全面认识具有十分重要的意义。通过对嵌岩桩与基岩相互作用系统的简化,初步设计了整体模型与中心对称模型两种试验方案。试验结果表明:与现场实测结果相比,两种方案均可模拟工程实际。通过对试验结果、实际操作的难易程度以及经济指标等的对比,建议采用中心对称模型试验方案。

OPTIMIZATION ANALYSIS OF INDOOR MODEL TEST SCHEME FOR ROCK-SOCKED FOUNDATION PILE IN KARST AREA

Because of high costs of field test and difficulty to do destructive test,the indoor model test of karst area rock-socked pile to study on bearing capacity is necessary.Through the simplification for the system of rock-socked pile and bedrock,two test schemes of integrated model and central symmetry model were put forward.Comparing with the field test,the model test results showed that the two schemes were feasible to simulate actual projects.Through comparing with the test results,the difficult degree of practical operation,and economic indexes,the central symmetry model test scheme was recommended.