Laboratory Validation of Ultra-Soft Soil Deformation Model

被引：21

作者：

Bo M.W. ^{[1
]}

Choa V. ^{[2
]}

Wong K.S. ^{[2
]}

Arulrajah A. ^{[3
]}

机构：

[1] DST Consulting Engineers Inc, Thunder Bay, ON P7B5V5

[2] Nanyang Technological University, Singapore 639798, Nanyang Avenue

[3] Swinburne University of Technology, Hawthorn, VIC 3122

来源：

Geotechnical and Geological Engineering | 2011年 / 29卷 / 1期

关键词：

Compression; Deformation; Effective stress; Large strain; Settlement;

D O I：

10.1007/s10706-010-9351-3

中图分类号：

学科分类号：

摘要：

Ultra-soft soil with high moisture content will experience large strain deformation under one-dimensional compression with little or no gain in effective stress. Such deformation behaviour does not comply with Terzaghi's effective stress gain theory. The e-log σv′ relationship of ultra-soft soil is non-linear with large compression index in the first order of log cycle. This paper proposes three compression indices (Cc1*, Cc2*, Cc3*) for stresses covering three log cycles. Good prediction of settlement magnitude is possible with these newly proposed compression parameters for ultra-soft soil. In addition, implicit finite difference model applying the large strain theory is also proposed and validated with results from laboratory measurements. The time factor curves for ultra-soft soil with large strain compression are also proposed and validated. © 2010 Springer Science+Business Media B.V.

引用

页码：65 / 74

页数：9

共 23 条

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