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通过刚性桩复合地基群桩(桩数3×3)模型试验,对不同垫层厚度刚性桩复合地基的变形特性、不同桩位桩体和桩间土的受力特性进行测试,并对桩土应力比和荷载分担比等反映桩土共同工作性能的指标进行分析,得出了刚性桩复合地基的承载特性和变形规律。结论可为刚性桩复合地基的优化设计提供依据。
Through the model test of group pile (3 × 3 pile) of rigid pile composite foundation, the deformation characteristics of rigid pile composite foundation with different cushion thickness, the force characteristics of pile-soil and pile-soil under different pile are tested, Stress ratio and load sharing ratio reflecting the common performance of pile-soil and other indicators were analyzed, and the bearing capacity of rigid-pile composite foundation and deformation law was obtained. Conclusion can provide the basis for the optimization design of rigid pile composite foundation.