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Research on Ground Settlement Characteristics of Marine Structural Soft Clay
Author(s): 
Pages: 539-545
Year: Issue:  5
Journal: Journal of Seismology

Keyword:  结构性土 地基沉降 海相软黏土 临界填土高度;
Abstract: 通过室内试验获得了海相结构性软黏土的初始屈服面;考虑不同埋深处地基土的初始结构屈服面之间的相似性规律,应用结构性本构模型,结合工程实测数据,对海相软黏土地基土体屈服与地基沉降之间的关系进行了研究。结果表明,结构性本构模型能够较好地模拟海相结构性软黏土地基的沉降变形;结构性土地基的土体屈服是由浅及深逐步发展的,虽然存在低荷载时沉降小、高荷载时沉降大且呈非线性增大的现象,但这是渐变的过程,沉降量—时间—填土高度曲线上不能确定显著的转折点,通过观察沉降曲线的转折点来确定临界填土高度的方法将难以实现。
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