长江科学院院报 ›› 2014, Vol. 31 ›› Issue (11): 136-142.DOI: 10.3969/j.issn.1001-5485.2014.11.0272014,31(11):136-142

• 工程设计与施工监控 • 上一篇    下一篇

特高拱坝结构安全度再评价

王仁坤1,2,张冲1,2,陈丽萍1,2,钟贻辉1   

  1. 1.中国电建集团 成都勘测设计研究院有限公司科技质量部, 成都 610072;
    2.国家能源水电工程技术研发中心 高混凝土坝分中心,成都 610072
  • 收稿日期:2014-08-02 修回日期:2014-11-05 出版日期:2014-11-01 发布日期:2014-11-05
  • 通讯作者: 张 冲(1978-),男,江苏海门人,高级工程师,博士后,主要从事水工结构设计和研究工作,(电话)13678146808(电子信箱)1838669487@qq.com。
  • 作者简介:王仁坤(1962-),男,四川达州人,教授级高级工程师,博士,主要从事水电工程设计工作,(电话)028-87399333(电子信箱)wangrenkun@chidi.com。

Reassessment of Structural Safety of Super High Arch Dam

WANG Ren-kun1,2, ZHANG Chong1,2, CHEN Li-ping1,2, ZHONG Yi-hui1   

  1. 1. Science and Quality Department, HydroChina Chengdu Engineering Corporation Limited, Chengdu 610072, China;
    2. High Concrete Dam Department, National Hydropower Technology Research &
    Development Center, Chengdu 610072,China
  • Received:2014-08-02 Revised:2014-11-05 Online:2014-11-01 Published:2014-11-05

摘要: 规范中的拱坝结构设计安全度并不完全代表拱坝结构的实际安全度,两者之间存在一定的差异,从而造成业界难以合理认识拱坝安全度的真实水平。结合国内数座已建、在建特高拱坝相关资料,基于多拱梁法,通过拱坝混凝土实际强度这一影响因子的探讨及修正,以及大坝结构最大可能应力的修正,推导出了拱坝结构的实际可能安全度。分析认为,当前规范对应的安全控制标准可以确保拱坝结构实际安全度大于1.0,实际安全裕度是较为合理可靠的。

关键词: 结构安全度, 真实应力, 多轴效应, 特高拱坝

Abstract: The safety factor of arch dam, which is an important standard of dam safety evaluation, shows a great disparity between design value and actual value. In order to rationally identify the ral safety condition of arch dam, a large number of high arch dam projects are discussed. An estimation formula of the actual possible safety factor of arch dam is derived by correcting the actual strength of concrete and the maximum possible stress of dam structure by using multi-arch beam method. Results demonstrates that the actual safety factor could be guaranteed to be larger than 1.0, which indicates a rational safety margin. The design safety factor could achieve the real security requirements.

Key words: safety factor, actual stress, multiaxial strength of concrete, arch dam

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