Ground movement patterns and shallow foundation performance in Iskenderun coastline during the 2023 Kahramanmaras earthquake sequence  

作　　者：Tugce Baser Kamran Nawaz Albert Chung Seikh Faysal Ozgun Alp Numanoglu 

机构地区：[1]Department of Civil and Environmental Engineering,University of Illinois Urbana-Champaign,Urbana,Illinois 61801,USA [2]Schnabel Engineering,16300 Christensen Rd Suite 350,Tukwila,WA 98188,USA

出　　处：《Earthquake Engineering and Engineering Vibration》2023年第4期867-881,共15页地震工程与工程振动（英文刊）

摘　　要：This study focuses on the field reconnaissance efforts for investigating ground deformation behavior and building foundation performance in Iskenderun.Many structures experienced significant damage or collapsed due to strong ground shaking in the coastal Iskenderun district of Hatay during the 2023 Kahramanmaras earthquake sequence.Many buildings were also impacted by ground failure due to liquefaction of deposits in the area.Preliminary information regarding the general subsurface profile and post-earthquake data collected during the reconnaissance was used to perform simplified liquefaction and lateral spreading analyses.The empirical methods provide first order estimations of settlements and lateral spreading but are not sufficient when the nature of the structure-soil-structure interaction and earthquake sequence is considered.Measurements of vertical displacements and building tilt,liquefaction manifestations,and structural and foundation parameters potentially affecting foundation settlements including foundation geometry,building contact pressure,and building elastic period were used to evaluate seismic response of the ground and the structures through empirical procedures.Most of the buildings exhibited poor to mediocre foundation performance due to liquefaction-prone subsurface profiles,especially on the coastline.Ongoing field and numerical research will reveal the cause of significant ground failure in the area as well as refined estimates for the seismic deformations.

关 键 词：Turkiye earthquake Iskenderun settlement geo-structures LIQUEFACTION lateral spreading foundation performance building settlements seismic settlements 

分 类 号：P315.9[天文地球—地震学] TU435[天文地球—固体地球物理学]