The analysis of the optimal scalar and vector intensity measurements for seismic performance assessment of deep-buried hydraulic arched tunnels

作     者：Benbo Sun Gangqin Zhang Binghan Xue Lei Kou Liangming Hu Weiying Liu 

作者机构：Yellow River LaboratoryZhengzhou UniversityZhengzhou 450001China School of Water Conservancy and Civil EngineeringZhengzhou UniversityZhengzhou 450001China 

出 版 物：《Underground Space》 (地下空间（英文）)

年 卷 期：2023年第9卷第2期

页      面：218-233页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：support from the National Natural Science Foundation of China(Grant No.52209169) 

主　　题：Intensity measure Hydraulic tunnels Examine Fragility curve Fragility surface 

摘      要：The selection of optimal intensity measures(IMs)has been recommended for generating the seismic demand models with different probabilities by researchers since the seismic IMs are closely associated with earthquake risks and structural ***,the seismic design code(mainly for aboveground structures)and dynamic analysis of underground structures conventionally employ the peak ground acceleration(PGA)as an optimal *** this paper,the research is to identify the optimal scalar and vector IMs in the fragility investigation of deep-buried hydraulic arched tunnels using the finite element method.A refinement process was performed to determine the optimal scalar IMs by comprehensively comparing their correlation,efficiency,practicality,proficiency,and sufficiency among the examined ***,the optimum vector IMs were also developed,followed by the three different scalar ***,the dif-ferences between the fragility curves of the tunnel produced using the optimal scalar and vector IM were *** generated vector fragility surface can be used to estimate the seismic fragility of identical hydraulic tunnels in an approximative manner.