CAJ | 학술논문

针对我国地下工程建设项目抗震安全性能设计和评估的需求，并基于目前缺少完善的地下结构抗震分析方法和专门的地下结构抗震设计规范的现状，重点阐述了采用有限元方法进行地下工程数值模拟和分析时需要特别关注的三方面问题：计算范围、土一结构动力相互作用和边界条件。着重分析了有限元网格的划分、土一结非线性接触问题和不同边界条件的适用性，以及这些建模条件对计算结果可靠性的影响。对基于数值手段开展地下工程抗震安全性能的计算、分析和评价，制定地下结构抗震设计规范或规程，可提供有益参考。
침대아국지하공정건설항목항진안전성능설계화평고적수구，병기우목전결소완선적지하결구항진분석방법화전문적지하결구항진설계규범적현상，중점천술료채용유한원방법진행지하공정수치모의화분석시수요특별관주적삼방면문제：계산범위、토일결구동력상호작용화변계조건。착중분석료유한원망격적화분、토일결비선성접촉문제화불동변계조건적괄용성，이급저사건모조건대계산결과가고성적영향。대기우수치수단개전지하공정항진안전성능적계산、분석화평개，제정지하결구항진설계규범혹규정，가제공유익삼고。
For lacking of complete seismic analysis methods and special seismic design codes for underground structures, three aspects, namely： calculation range, soil-structure interaction and boundary conditions, to which close attention should be paid when FEM is used to numerically simulate and analyze underground structures during earthquake are elaborated to satisfy the demand for seismic performance design and evaluation of underground projects in China. Discussions are made on finite element meshing, nonlinear soil-structure contact element, the applicability of different boundary conditions and the influence on the results reliability caused by different modeling methods. The research and solution of these problems provide useful references to numerical method based seismic performance calculation, analysis and evaluation, and are also he.n~.ficiAI I＇n ~..~t~hli.~h nnfl~..~ fnr .~.i~min fl~inn nf l lnfl~rnrnl inrt ~fn ~r.h ir~