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长桩基础在施工及加荷过程中,对不同土质的地基会有不同的影响,这一问题对桩基设计具有一定的实用意义。目前,对此课题的研究还不很多,特别对多层地基问题更是如此。1984年在连云港进行了现场观测,以研究打桩对不同土类孔隙压力消长的影响;孔隙压力传递的影响范围以及桩受荷时对各种土类孔隙压力的影响。
In the process of construction and loading, the long-pile foundation will have different influence on the foundation of different soils. This problem has certain practical significance for the design of the pile foundation. At present, there is not much research on this topic, especially for the multi-layered foundation. In 1984, field observations were conducted in Lianyungang to study the influence of pile driving on pore pressure fluctuations in different soil types; the influence of pore pressure transfer and the influence of pile load on the pore pressure of various soil types.