Sliding response of gravity dams including vertical seismic accelerations

作     者：Constantin Christopoulos PierreLéger André Filiatrault 

作者机构：Department of Civil EngineeringUniversity of TorontoCanada Assistant Professor Department of Civil EngineeringEcole PolytechniqueMontrealCanada Professor Department of CivilStructural and Environmental EngineeringUniversity at BuffaloUSA Professor 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2003年第2卷第2期

页      面：189-200页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：Natural Seienee and Engineering Researeh Couneilof Canada(NSERC),Hydro-Qucbcc,Alcan the "fonds Pour la Formation de Chereheurs et l'Aide ala Recherehe"(FCAR) of Quebec 

主　　题：vertical accelerations sliding gravity dams synthetic accelerograms pseudo-static combinations frequency 

摘      要：Seismic safety assessment of gravity dams has become a major concern in many regions of the world while the effects of vertical seismic accelerations on the response of structures remain poorly *** paper first investigates the effect of including vertical accelerations in the sliding response analysis of gravity dams subjected to a range of historical ground motion records separated in two groups according to their source-to-site *** showed that the incidence of vertical accelerations on the sliding response of gravity dams is significantly higher for near-source records than for far- source *** pseudo-static 30% load combination rule,commonly used in practice to account for the non-simultaneous occurrence of the peak horizontal and vertical accelerations,yielded good approximations of the minimum safety factors against sliding computed from time-history analyses.A method for empirically estimating the vertical response spectra based on horizontal spectra,accounting for the difference in frequency content and amplitudes between the two components is *** from analyses using spectrum compatible horizontal and vertical synthetic records also approximated well the sliding response of a gravity dam subjected to series of simultaneous horizontal and vertical historical earthquake records.