Assessment of seismic hazard of roller compacted concrete dam site in Gilgit-Baltistan of northern Pakistan

作     者：Shahzada Khurram Perveiz Khalid Jahanzeb Qureshi Zia Ud Din Shahzada Khurram;Perveiz Khalid;Jahanzeb Qureshi;Zia Ud Din

作者机构：Institute of GeologyUniversity of the PunjabLahore 54590Pakistan Department of Space ScienceUniversity of the PunjabLahore 54590Pakistan 

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

年 卷 期：2021年第20卷第3期

页      面：621-630页

核心收录：

学科分类：081504[工学-水利水电工程] 08[工学] 0815[工学-水利工程] 081503[工学-水工结构工程] 

基　　金：The authors thank Mr. Muhammad Javed of Terra Technology for his support in the seismic hazard analysis and useful discussion to complete this work 

主　　题：seismic hazard analysis peak ground acceleration Gilgat-Biltastan Diamer Bhasha Dam 

摘      要：The proposed site of the Diamer Bhasha Dam in northern Pakistan is situated in an active tectonic zone with intensive seismicity,which makes it necessary for seismic hazard analysis(SHA).Deterministic and probabilistic approaches have been used for SHA of the dam *** Main Mantle Thrust(MMT),Main Karakaram Thrust(MKT),Raikot-Sassi Fault(RKSF)and Kohistan Fault(KF)have been considered as major seismic sources,all of which can create maximum ground shaking with maximum potential earthquake(MPE).Deterministically estimated MPE for magnitudes of 7.8,7.7,7.6,and 7.1 can be produced from MMT,MKT,RKSF and KF,*** corresponding peak ground accelerations(PGA)of 0.07,0.11,0.13 and 0.05 g can also be generated from these earthquakes,*** deterministic analysis predicts a so-called floating earthquake as a MPE of magnitude=7.1 as close as 10 km away from the *** corresponding PGA was computed as 0.38 g for a maximum design earthquake at the project ***,the probabilistic analysis revealed that the PGA with 50%probability of exceedance in 100 years is 0.18 ***,this PGA value related to the operational basis earthquake(OBE)is suggested for the design of this project with shear wave velocity(V_(s30))equal to 760 m/s under dense soil and soft rock conditions.