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借鉴真空深井降水法,对真空联合堆载预压法进行改进,即把真空源设在地基加固区下方,利用重力作用加快排水速率。通过室内模拟试验对其加固机理进行理论上的探索,利用等效堆载法,对试验数据进行拟合,得出沉降量与上覆荷载、真空度以及固结时间的关系,提出工程实用计算公式,并与实测值进行对比,以验证公式的有效性并分析误差产生的原因。
Draw lessons from the vacuum deep well dewatering method to improve the vacuum combined preloading method, that is to say, the vacuum source is set below the foundation reinforcement zone and gravity drainage is used to speed up drainage. Through the simulation experiment in house, the reinforcement mechanism is theoretically probed, and the equivalent loading method is used to fit the experimental data to get the relationship between the settlement and the overburden, the degree of vacuum and the consolidation time, and the practical engineering calculation Formula, and compared with the measured value to verify the validity of the formula and analyze the causes of the error.