循环荷载下砂质混合土孔隙水压力特性研究

循环荷载下砂质混合土孔隙水压力特性研究 English Version

1.Department of Civil and Architectural Eng. Dalian University Dalian 116622 China 2.Department of Civil Engineering Tokyo Institute of Technology To kyo Japan 152

摘要: 通过对各种细颗粒含量的土实施从小到大应变水平的动力循环荷载试验,采用累积损失能量的观点,分别考察了土的细颗粒成分含量、围压、加载频率、加载形式及荷载的不规则性对孔压的影响,提出了孔隙水压力和累积损失能量的归一化方法,建立了砂质混合土的孔隙水压力上升模型,并探讨了模型参数和土的细颗粒成分含量的关系。
- 细颗粒成分含量 /
- 循环荷载试验 /
- 孔隙水压力 /
- 累积损失能量 /
- 孔隙水压力模型
Abstract: Dynamic cyclic loading tests of the soils with va rious fine content are carried out with different strain level from low to high. Based on t he viewpoint of total energy dissipation, the effects of the following factors o n the excess pore water p ressure are studied:fine content,confining pressure, loading frequency, loading s tep and irregularity of loading. A normalization method is put forward for the e xc ess pore water pressure and total energy dissipation. An excess pore water p ressure rising model is established for the sandy clay. Relationships between mo del parameters and fine content of soil are discussed finally.
- fine content /
- cyclic loading /
- excess pore water pre ssure /
- total energy dissipation /
- excess pore water pressure model