Small- and large-strain soil properties from seismic flat dilatometer tests

被引：0

作者：

Mayne, PW ^{[1
]}

Schneider, JA ^{[1
]}

Martin, GK ^{[1
]}

机构：

[1] Georgia Inst Technol, Atlanta, GA 30332 USA

来源：

PRE-FAILURE DEFORMATION CHARACTERISTICS OF GEOMATERIALS, VOL 1 | 1999年

关键词：

clay; dilatometer; downhole tests; in-situ testing; sheer modulus; silty sand; shear strength; strains;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The seismic flat dilatometer test (SDMT) provides downhole shear wave velocities (V-S) in supplement to conventional inflation readings (p(0) and p(1)). Soil stratigraphy and strength parameters are evaluated from the pressure readings while the small-strain stiffness (G(0)) is obtained from in-situ V-S profiles. A modified hyperbola is used for modulus degradation in order to span from nondestructive- to intermediate-to failure-level strains. Comparisons are made between the derived stress-strain-strength curves from SDMTs and laboratory tests on soft varved lacustrine clay and residual silty sand. The approximate nonlinear approach is also applied to a load test case study involving shallow foundation displacements.

引用

页码：419 / 426

页数：8