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往复荷载作用下土体既产生弹性变形,同时又产生永久变形,这种累计的永久变形无疑是研究的重点,而关于往复荷载作用下土体变形特性的研究较少,鉴于此,笔者开展了往复载荷作用下超大型基础板沉降现场试验研究,通过对不同位置、不同深度土体中孔隙水压力、分层沉降和侧向位移的连续监测,研究土体中孔隙水压力、分层沉降和侧向位移对往复荷载的响应特征,得出了土体中孔隙水压力的增长和消散,以及分层沉降和侧向位移随载荷变化的规律,为工程设计的应用提供了依据。
Under the action of reciprocating load, the soil not only produce elastic deformation, but also produce permanent deformation. The cumulative permanent deformation is undoubtedly the focus of study, while the research on deformation characteristics of soil under cyclic loading is less. In view of this, In the field experiment of settlement of super-large base plate under reciprocating loads, the pore water pressure, stratification and settlement in the soil were studied through continuous monitoring of pore water pressure, stratification and lateral displacement in different positions and depths The response characteristics of lateral displacement to reciprocating load are analyzed. The growth and dissipation of pore water pressure in soil and the law of delamination and lateral displacement with load are obtained, which provide the basis for the application of engineering design.