Uniqueness of time-dependencies for Shanghai soft clay

Q. Y. Zhu; Z. Y. Yin; Z. x. Wu; P. Y. Hicher

Uniqueness of time-dependencies for Shanghai soft clay

Q. Y. Zhu, Z. Y. Yin, Z. x. Wu, P. Y. Hicher

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

2 Citations (Scopus)

Abstract

This study focuses on the uniqueness of rate-dependency, creep and stress relaxation behaviors of Shanghai soft clay based on different time-dependent tests. A one-dimensional elasto-viscoplastic model is briefly introduced based on the rate-dependency of preconsolidation pressure. The relationship between the ratedependency and the creep is firstly described. Then the strain-rate based formulation is extended to derive the evolution of vertical stress during relaxation with an analytical solution.A stress relaxation coefficient is defined as the slope of ln(σⁱ _v) versus ln(t). Based on this, the relationship between the rate-dependency coefficient and the stress relaxation coefficient is derived by solving the differential of ln(σ ⁱ _v) versus ln(t). The uniqueness between the rate-dependency, the secondary compression and the stress relaxation is validated by comparing the three experimental and estimated time-dependent coefficients of Shanghai soft clay.

Original language	English
Title of host publication	Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014
Publisher	Taylor and Francis - Balkema
Pages	139-143
Number of pages	5
ISBN (Print)	9781138026872
Publication status	Published - 1 Jan 2014
Externally published	Yes
Event	8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014 - Delft, Netherlands Duration: 18 Jun 2014 → 20 Jun 2014

Publication series

Name	Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014
Volume	1

Conference

Conference	8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014
Country	Netherlands
City	Delft
Period	18/06/14 → 20/06/14

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology

More information

Link to publication in Scopus

Cite this

Zhu, Q. Y., Yin, Z. Y., Wu, Z. X., & Hicher, P. Y. (2014). Uniqueness of time-dependencies for Shanghai soft clay. In Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014 (pp. 139-143). (Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014; Vol. 1). Taylor and Francis - Balkema.

Zhu, Q. Y. ; Yin, Z. Y. ; Wu, Z. x. ; Hicher, P. Y. / Uniqueness of time-dependencies for Shanghai soft clay. Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014. Taylor and Francis - Balkema, 2014. pp. 139-143 (Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014).

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abstract = "This study focuses on the uniqueness of rate-dependency, creep and stress relaxation behaviors of Shanghai soft clay based on different time-dependent tests. A one-dimensional elasto-viscoplastic model is briefly introduced based on the rate-dependency of preconsolidation pressure. The relationship between the ratedependency and the creep is firstly described. Then the strain-rate based formulation is extended to derive the evolution of vertical stress during relaxation with an analytical solution.A stress relaxation coefficient is defined as the slope of ln(σi v) versus ln(t). Based on this, the relationship between the rate-dependency coefficient and the stress relaxation coefficient is derived by solving the differential of ln(σ i v) versus ln(t). The uniqueness between the rate-dependency, the secondary compression and the stress relaxation is validated by comparing the three experimental and estimated time-dependent coefficients of Shanghai soft clay.",

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Zhu, QY, Yin, ZY, Wu, ZX & Hicher, PY 2014, Uniqueness of time-dependencies for Shanghai soft clay. in Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014. Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014, vol. 1, Taylor and Francis - Balkema, pp. 139-143, 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014, Delft, Netherlands, 18/06/14.

Uniqueness of time-dependencies for Shanghai soft clay. / Zhu, Q. Y.; Yin, Z. Y.; Wu, Z. x.; Hicher, P. Y.

Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014. Taylor and Francis - Balkema, 2014. p. 139-143 (Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014; Vol. 1).

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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N2 - This study focuses on the uniqueness of rate-dependency, creep and stress relaxation behaviors of Shanghai soft clay based on different time-dependent tests. A one-dimensional elasto-viscoplastic model is briefly introduced based on the rate-dependency of preconsolidation pressure. The relationship between the ratedependency and the creep is firstly described. Then the strain-rate based formulation is extended to derive the evolution of vertical stress during relaxation with an analytical solution.A stress relaxation coefficient is defined as the slope of ln(σi v) versus ln(t). Based on this, the relationship between the rate-dependency coefficient and the stress relaxation coefficient is derived by solving the differential of ln(σ i v) versus ln(t). The uniqueness between the rate-dependency, the secondary compression and the stress relaxation is validated by comparing the three experimental and estimated time-dependent coefficients of Shanghai soft clay.

AB - This study focuses on the uniqueness of rate-dependency, creep and stress relaxation behaviors of Shanghai soft clay based on different time-dependent tests. A one-dimensional elasto-viscoplastic model is briefly introduced based on the rate-dependency of preconsolidation pressure. The relationship between the ratedependency and the creep is firstly described. Then the strain-rate based formulation is extended to derive the evolution of vertical stress during relaxation with an analytical solution.A stress relaxation coefficient is defined as the slope of ln(σi v) versus ln(t). Based on this, the relationship between the rate-dependency coefficient and the stress relaxation coefficient is derived by solving the differential of ln(σ i v) versus ln(t). The uniqueness between the rate-dependency, the secondary compression and the stress relaxation is validated by comparing the three experimental and estimated time-dependent coefficients of Shanghai soft clay.

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Zhu QY, Yin ZY, Wu ZX, Hicher PY. Uniqueness of time-dependencies for Shanghai soft clay. In Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014. Taylor and Francis - Balkema. 2014. p. 139-143. (Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014).