Abstract
AbstractEffect of slopes on topographic amplification has been rarely studied. This is an important issue for performance based design of foundations in hilly areas. The presented numerical study examines the seismic response of slope topography for different site conditions under vertically propagating SV waves. A single face slope, of constant base width, is considered. The influence of slope angle (β) and frequency of excitation on amplification of seismic ground motion is investigated. The two-dimensional Finite Element Analysis (2D-FEA) is adopted for the present seismic analysis of slope-topography. The behavior of soil is assumed as linear elastic. The side boundary is considered as a free field boundary to avoid reflection of ground motion. Complaint base condition is assigned at the bottom of the model. The incident ground motion is applied at the base of the FEA model and a far-field point from toe and crest is defined. The Seismic-Slope Topographic Amplification Factor (S-STAF) is expressed as a ratio of seismic response at the near field (along and surrounding the slope) and response at free field condition (horizontal ground surface). It was observed that the amplification increases as the slope angle and frequency of excitation increases. Further, the distance of point of the maximum peak ground acceleration from the crest increases as the slope angle increases.KeywordsSeismic-slope topographic amplification factorFinite element analysisVertically propagating SV waves
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.