中南大学学报（自然科学版）2018，Vol.49Issue(5)：1203-1212,10.DOI:10.11817/j.issn.1672-7207.2018.05.023
地震作用下地下厂房混凝土衬砌结构稳定分析
Stability analysis of concrete lining structure in underground powerhouse with seismic action
摘要
Abstract
Based on rate-dependant and fatigue damage characteristics of concrete under cyclic loading, a dynamic constitutive model that considers tension and shear damage anisotropic was proposed, and the evolution equations of damage variables were derived. According to dynamic interaction characteristics of surrounding rock and lining, a explicit dynamic finite element analysis method that considers the discontinuous deformation between surrounding rock and lining was presented. Thus, a dynamic response analysis method of concrete lining structure in underground powerhouse was constructed and then applied to calculate seismic stability of Yingxiuwan Hydropower Station. The results show that various positions of lining structure are in a synchronous vibration state, but the stress and displacement response of the top arch are larger than that of other positions. The maximum relative displacement of the top arch and side wall of the main powerhouse reaches 1.6 cm, indicating that the main building has a obvious structural deformation. Damage zone of lining structure is mainly distributed in its top arch, and the damage caused by tension is more serious.The confinement effects of the surrounding rock to the lining structure is helpful for seismic stability of the lining structure. Calculation results from the proposed method reflect seismic response characteristics of concrete lining reasonably, and thus provide references for seismic design of concrete lining in underground powerhouse.关键词
地下厂房/混凝土衬砌/动力响应/拉、剪损伤各向异性/动力本构/非连续变形/显式动力有限元Key words
underground powerhouse/concrete lining/dynamic response/tension and shear damage anisotropic/dynamic constitutive/discontinuous deformation/explicit dynamic finite element分类
建筑与水利引用本文复制引用
王小威,陈俊涛,肖明,邓建..地震作用下地下厂房混凝土衬砌结构稳定分析[J].中南大学学报（自然科学版）,2018,49(5):1203-1212,10.基金项目
国家重点基础研究发展计划(973计划)项目(2015CB057904) （973计划）
国家自然科学基金资助项目(51579191)(Project(2015CB057904)supported by the National Program on Key Basic Research Project(973 Program) （51579191）
Project(51579191)supported by the National Natural Science Foundation of China) （51579191）
