期刊文献+

基于功能的混凝土重力坝地震破坏评价模型 被引量:21

Performance-based seismic damage assessment model for concrete gravity dams
收藏 分享 导出
摘要 为了定量反映混凝土重力坝地震破坏程度,进行基于功能的重力坝抗震设计,建立了一种地震破坏评价模型。基于线弹性模型,分析了混凝土重力坝在地震作用下的需求能力比、超应力累积持时,并在弹塑性损伤力学的基础上分析了损伤区长度、位置及损伤因子,建立了重力坝地震破坏评价模型。通过印度Koyna重力坝典型地震破坏事例分析,模型计算的损伤指标(DM)值均大于0.6,属于严重损伤破坏,验证了该模型的合理性。因此,该模型可以定量评估重力坝震后的破坏状态。 Performance-based seismic design of concrete gravity dams requires a seismic damage assessment model which can quantitatively describe the damage degree of dams during strong earthquakes. A linear finite element analysis was used to calculate the damage response of dams to earthquakes as demand-capacity ratios and cumulative overstress durations. The damage index, ratios, and damage zone positions were also studied using a plastic-damage model. The results were used to develop a seismic damage assessment model for concrete gravity dams. All values of the calculated damage measure (DM) were more than 0. 6. The accuracy of the model's seismically induced damage assessment was verified by the case of Koyna dam in India. The model can quantitatively evaluate the damage degree of gravity dams during strong earthquakes.
作者 沈怀至 张楚汉 寇立夯 SHEN Huaizhi, ZHANG Chuhan, KOU Lihang (Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China)
出处 《清华大学学报:自然科学版》 EI CAS CSCD 北大核心 2007年第12期2114-2118,共5页 Journal of Tsinghua University(Science and Technology)
基金 国家自然科学基金重点资助项目(90510018)
关键词 地震破坏 评价模型 需求能力比 超应力累积持时 损伤因子 名义抗拉强度 seismic damage assessment model demand-capaclty ratio cumulative overstress duration damage index apparent tensile strength
作者简介 沈怀至(1969-),男(汉),安徽,博士研究生。 通讯联系人:张楚汉,中国科学院院士,E—mail:zch-dhh@tsinghua.edu.cn
  • 相关文献

参考文献9

  • 1Hinks J L, Gossehalk E M. Dam and earthquake [J]. Dam Eng, 1993, 4(1):9-24. 被引量:1
  • 2SHEN Chonggang, CHEN Houqun, ZHANG Chuhan, et al. Earthquakes induced by reservoir impounding and their effect on Hsingfengkiang dam [J]. Scientia Sinica, 1974, 17(2). 被引量:1
  • 3Ghanaat Y. Failure modes approach to safety evaluation of dams [C] // 13th World Conf on Earthquake Eng. Canada, 2004: 1115. 被引量:1
  • 4SASAKI Takashi, KANENAWA Kenichi, YAMAGUCHI Yoshikazu. Simple estimating method of damages of concrete gravity dam based on linear dynamic analysis [C] // 13th World Conf on Earthquake Eng. Canada, 2004: 128. 被引量:1
  • 5张楚汉,金峰,沈怀至,等.基于功能的高坝抗震安全与风险评价[C]//曹楚生.新世纪水利工程科技前沿.天津;天津大学出版社,2004. 被引量:2
  • 6Raphael J M. The tensile strength of concrete [J].ACI J Proc, 1984, 81(17): 158-165. 被引量:1
  • 7Yamaguchi Y, Hall R, Maekawa K, et al. Seismic performance evaluation of concrete gravity dams [C] // 13th World Conf on Earthquake Eng, Canada, 2004: 1068. 被引量:1
  • 8Lee J, Fenves G L. Plastic-damage model for cyclic loading of concrete structures [J]. Eng Mech, 1998, 124(8): 892- 900. 被引量:1
  • 9Lee J, Fenves G L. A plastic-damage concrete model for earthquake analysis of dams [J]. Earthquake Eng and Struc Dyna, 1998, 127: 937-956. 被引量:1

共引文献1

同被引文献207

引证文献21

二级引证文献83

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈
新型冠状病毒肺炎防控与诊疗专栏