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为研究咸水区地下水和土的高含盐量对水泥搅拌形成的水泥土材料力学性质以及水泥土复合地基承载力的影响,通过传感器现场观测沉降、桩土应力比等得到指标变化规律,并基于Biot固结理论对复合地基进行了数值模拟计算。现场试验与模拟计算结果表明:数值模拟结果与现场试验较为吻合;复合地基承载性能受咸水腐蚀影响显著,咸水区复合地基沉降、桩土应力比等参数均大于淡水区。
In order to study the influence of high salt content of groundwater and soil in salt water on the mechanical properties of cement-soil materials and the bearing capacity of cement-soil composite foundation, the changing laws of indexes were obtained by observing the settlement, stress ratio of pile-soil and so on The composite foundation is calculated based on Biot consolidation theory. Field tests and simulation results show that the numerical simulation results are in good agreement with the field tests. The bearing capacity of composite foundations is significantly affected by saltwater erosion. The settlement of composite foundations and the stress ratio of pile-soil in saline-water areas are all greater than those in freshwater areas.