Seismic Soil Liquefaction for Deterministic and Probabilistic Approach Based on in <i>Situ</i> Test (CPTU) Data

Abstract

One of the most devastating effects of earthquakes in the seismic regions is liquefaction. Many research works have been done in this field and at present different methods are available for the liquefaction potential assessment. The liquefaction is a very significant phenomenon in clayey silty soils, silty sands and also sands. The high potential of liquefaction is generally recognized when these type of soils are laid under the hydrostatic water table. This paper make an overview of two different methods for the evaluation of liquefaction potential, and a case study is presented. Two methods presented here are the Deterministic Approach proposed by Robertson and Wride (1998), and the Probabilistic Approach proposed by Moss and co-workers. Case study of the liquefaction potential evaluation is done for the Golem area, where geotechnical data from CPTU test were collected. The results of analysis in the Golem area show that liquefaction has medium susceptibly to occur. From the analyses, it is shown that the Probabilistic Approach gives more accurate information about the risk of liquefaction than the Deterministic Approach.

Development of Soil Distribution and Liquefaction Potential Maps for Downtown Area in Yangon, Myanmar

“…It can be observed from the LPI contour maps that a high degree of liquefaction damages is likely to occur at a particular location for higher magnitude of earthquake and peak ground acceleration (Debojit Sarker, 2015) [19]. An overview of deterministic and probabilistic methods for the evaluation of liquefaction potential was made in Shpresa Gashi, 2015 [20].…”

Soil Liquefaction Potential Maps for Earthquake Events in Yangon, Myanmar

“…Where FC is the fines content (percent finer than 0.075mm)The cyclic stress ratio (CSR) proposed by Seed et al(1985) is calculated as[10][11][12][13][14][15][16][17] …”