复合地基中散体材料桩荷载-沉降关系的数值分析

Numerical Analysis on the Load-Settlement Relation of Gravel Column in Composite Foundation

针对散体材料桩与桩周土相互作用的特点,基于弹性理论及计算假定,利用应力函数法对复合地基中散体材料桩桩身的应力状态进行了分析,推导出了考虑桩间土荷载及桩、土自重影响的散体材料桩的荷载-沉降关系式;利用该方法对某工程实例进行了计算分析,结果表明,基于本文方法获得的散体材料桩的荷载-沉降关系与实测结果吻合较好。

Considering the interaction characteristics between gravel column and soil surrounding pile, column stress state in the gravel composite was analyzed by the stress function method based on the elastic theory. Considering the influence of load among columns and deadweight of column and soil surrounding pile, the load-settlement relation was established. Finally, when the method was used to analyze the practical project, its feasibility was proved by the reasonable agreement between the calculated and the measured values.