ISSN 2319-5347, ISI Impact Factor: 0.763

VOLUME 06 NO. 02 JULY 2017:

Title:          Seismic Slope Stability Analysis of Mahananda River Embankment in Bangladesh
Authors:     Rubieyat Bin Ali, Md. Mofizul Islam, Bijoy Sikder, Md. Abdul Alim
Abstract:    Stability of structures such as embankments, dams and natural riverside slopes are hampered due to the seismic loading. To evaluate the seismic effect on stability of slopes is a major concern in the field of geotechnical engineering. Two-dimensional limit equilibrium method (LEM) is common approach for analyzing slope stability. Usually LEM is used to find out potential failure mechanisms and factors of safety for slopes. The aim of this study is to evaluate the effect of seismic loading on the stability of Mahananda River Embankment of Bangladesh by using LEM. The Bishop, Spencer, Fellenious, Janbu and Morgenster-price simplified methods are used for LEM. To conduct the study three locations of Mahananda River Embankment are selected. Soil properties are obtained from laboratory testing. The numerical analysis is carried out using geotechnical software GEO5 which is generally used for analyzing LEM based slope stability problems. From the analysis, it is noted that the factors of safety decrease with the increase of horizontal seismic coefficient for slopes. The horizontal seismic coefficient alone affects the stability of slope severely than the combined effect of horizontal and vertical seismic coefficient. The results conclude that present condition of Mahananda river embankment is stabilized under seismic loading.

Keywords:  stability of slope, limit equilibrium method, seismic coefficient.
Pages:        84-90

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