35R - 2003 eerc_2003_06 copy.pdf (original) (raw)

Liquefaction of Soil and Recent Used Methods of Mitigation

2021

In the history, liquefaction has been a cause of damage, scholars have spent the last 3 decades trying to figure out what criteria should be used to help describe a soil deposit's liquefaction potential. Liquefaction is a soil mechanics issue that frequently impacts structures that are upheld on soaking sand stores. In several seismic events, liquefaction caused significant damage to pipelines, homes, bridges, and other vital infrastructure. A devastation caused by soil liquefaction were forcibly bring into the interest of engineers by catastrophic 1964 earthquake in Niigata, Japan. This paper presents an overall depiction of liquefaction and Recent utilized Methods of Mitigation. This review paper covers all basic knowledge and view of liquefaction. also, this review paper discusses the evaluation method test In-situ testing particularly CPT and SPT test.

EVALUATION OF LIQUEFACTION POTENTIAL OF SOILS -A REVIEW

Journal of Emerging Technologies and Innovative Research, 2018

Liquefaction of soil during earthquakes results in catastrophic damages to life and property. The deformations of soil during earthquakes pose a serious risk to the stability of structures. Niigata earthquake in Japan and the Bhuj earthquake in India incurred large scale damage to the buildings and dams. It is essential to evaluate the resistance of soils to liquefaction. This paper deals with understanding the process of liquefaction and estimating the liquefaction potential of soils by various laboratory tests and empirical approaches. The undrained behaviour of soils in cyclic shearing is explained with the help of cyclic triaxial testing and cyclic direct simple shear test. The results of the cyclic direct simple shear test conducted on loose Fraser river sand in Vancouver, Canada are discussed in this paper. The empirical approach developed in 1996 NCEER and 1998 NCEER/NSF workshops to determine the liquefaction potential of soils is presented. This empirical approach is a simplified procedure based on field tests which can be used in practice to evaluate the liquefaction potential of soils.