Excess pore pressure dissipation and solidification after liquefaction of saturated sand deposits

B. Wang, K. Zen, Guangqi Chen, Y. B. Zhang, Kiyonobu Kasama

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

To understand the post-liquefaction behavior of liquefied ground, it is important to get a better understanding and a more suitable characterization of the variation of excess pore pressure after liquefaction. In this paper, the soil permeability is considered as one of the key soil parameters for clarifying the mechanism of post-liquefaction behavior of liquefied ground. For this reason, a series of shaking table tests were conducted for a Toyoura sand deposit with different soil permeability values. Polymer fluid was used in model tests to vary the permeability of sand deposits. Excess pore pressures and settlements were measured in each test. A basic mechanism in post-liquefaction behavior and the solidification phenomenon after liquefaction were discussed based on these test results. Also, a new method for predicting the dissipation of excess pore pressure was developed. This study provides evidence of the important effect of soil permeability on the velocity with which the solidification front moves upward in liquefied ground. It is suggested that the value of coefficient of permeability of liquefied sand can increase to about 4.0 times the initial value. This variation of permeability after liquefaction should be taken into account in post-liquefaction analysis.

Original languageEnglish
Pages (from-to)157-164
Number of pages8
JournalSoil Dynamics and Earthquake Engineering
Volume49
DOIs
Publication statusPublished - Jun 1 2013

Fingerprint

solidification
Pore pressure
Liquefaction
liquefaction
pore pressure
Solidification
dissipation
Sand
Deposits
sand
permeability
Soils
soil
testing
shaking table test
model test
polymers
polymer
Fluids
fluid

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Soil Science

Cite this

Excess pore pressure dissipation and solidification after liquefaction of saturated sand deposits. / Wang, B.; Zen, K.; Chen, Guangqi; Zhang, Y. B.; Kasama, Kiyonobu.

In: Soil Dynamics and Earthquake Engineering, Vol. 49, 01.06.2013, p. 157-164.

Research output: Contribution to journalArticle

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