| 浅论拱坝坝肩抗震稳定 |
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| 引用本文： | 陈厚群,张伯艳,涂劲.浅论拱坝坝肩抗震稳定[J].水力发电学报,2004,23(6):40-44. |
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| 作者姓名： | 陈厚群 张伯艳 涂劲 |
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| 作者单位： | 1. 西安理工大学水利水电学院,西安,710048;中国水利水电科学研究院工程抗震研究中心,北京,100044
2. 中国水利水电科学研究院工程抗震研究中心,北京,100044 |
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| 摘 要： | 本文从拱坝震害,分析了拱坝抗震的特点、薄弱部位和坝肩动力失稳的过程,指出了拱坝坝肩抗震稳定分析与边坡稳定分析的不同之处,探讨了失稳安全系数的定义和意义,最后,回顾了基于现行抗震规范要求的刚体极限平衡方法并指出了其局限性,以及“九五”攻关期间所采取的改进措施,提出了更切近实际,能反应拱坝抗震稳定诸特点,从概念和方法上都有别于传统的刚体极根平衡法的新的拱坝坝肩抗震稳定分析方法,以及与之相配套的以坝体为主体的坝肩岩体稳定的工程安全准则。
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| 关 键 词： | 水工结构 坝肩抗震稳定 刚体极限平衡 拱坝 失稳安全系数 |
| 修稿时间： | 2004年5月20日 |
Study on dynamic stability of arch dam abutment |
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| CHEN Houqun ,ZHANG Boyan ,TU Jin.Study on dynamic stability of arch dam abutment[J].Journal of Hydroelectric Engineering,2004,23(6):40-44. |
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| Authors: | CHEN Houqun ZHANG Boyan TU Jin |
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| Affiliation: | CHEN Houqun 1,2,ZHANG Boyan 1,2,TU Jin 2 |
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| Abstract: | Based on damage caused by earthquake on arch dam,the arch dam aseismatic trait,weak position and the process of dynamic destabilization are analyzed.It is indicated that dynamic stability analysis of arch dam abutment is different from slope stability analysis,and the definition and meaning of stability safety factor are discussed.Finally,the limit equilibrium method of rigid body and its localization are simply discussed.A new method is proposed for stability analysis of arch dam abutment,which is very close to practice and can reflect the aseismatic stability feature and is different from the traditional limit equilibrium method of rigid body.Also,the corresponding ultimate limit safety criterion of arch dam abutment is elementarily studied. |
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| Keywords: | hydraulic structure abutment aseismatic stability limit equilibrium of rigid body arch dam stability safety factor |
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