A MODIFIED PROCEDURE TO EVALUATE EARTHQUAKE-INDUCED DISPLACEMENT OF SLOPES CONTAINING A WEAK LAYER

SOILS AND FOUNDATIONS

JUNICHI KOSEKI³  HIROSHI KAMEYA¹  JIANLIANG DENG²  YUKIKA TSUTSUMI³ 

[1] Energy Business Division, OYO Corporation;Geosphere Research Institute, Saitama University;Institute of Industrial Science, University of Tokyo

关键词: earthquake;    excess pore water pressure;    Janbu method;    Newmark's sliding block method;    slope stability;    weak layer;    (IGC: E8/E12/E13);   

DOI  :  10.3208/sandf.50.413

学科分类：建筑学

来源: Japanese Geotechnical Society / Jiban Kogakkai

【 摘 要 】

References(17)Cited-By(5)A procedure based on the Janbu method for slope stability analysis and Newmark's sliding block method for displacement calculation is proposed to evaluate rationally the earthquake-induced displacement of slopes containing a weak layer. In the procedure, the effects of the irregular geometry of the sliding plane and generation of excess pore water pressure in the weak layer which forms partly the sliding plane are considered. In the computation following the proposed procedure, a negative yield seismic coefficient to induce a safety factor of unity can be obtained because of the effect of excess pore water pressure, while the residual displacement can become a finite value because the sliding plane becomes flatter in general after the slope undergoes a large displacement.

【 授权许可】

Unknown