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| 亭子口重力坝表孔坝段地震动力响应分析 | |
| 引用本文： | 职承杰,漆文邦,何蕴龙. 亭子口重力坝表孔坝段地震动力响应分析[J]. 人民长江, 2011, 42(10): 30-35 |
| 作者姓名： | 职承杰 漆文邦 何蕴龙 |
| 作者单位： | 1. 长江勘测规划设计研究院,枢纽设计处,湖北,武汉,430010 2. 四川大学,水利水电学院,四川,成都610065 3. 武汉大学,水资源与水电工程科学国家重点实验室,湖北,武汉,430072 |
| 摘 要： | 亭子口重力坝坝基岩层近于水平，分布有各类软弱夹层。为科学评价其坝体结构抗震安全性与地震动力抗滑稳定性，采用黏弹性人工边界模拟地基辐射阻尼效应，以有厚度接触单元模拟坝基软弱夹层，对亭子口重力坝的表孔坝段进行了三维有限元时程动力分析。计算结果表明，在水工抗震规范谱人工地震波作用下，大坝上下游表面产生了明显的动应力响应，但动静叠加后，坝体竖直向在地震过程中没有出现拉应力；以泥化夹层JS2-1-2为底滑面的滑动模式为大坝深层动力抗滑稳定的控制工况，设置齿槽后大坝动力深层抗滑稳定性显著提高，大坝在地震过程中不会发生整体失稳。 |
| 关 键 词： | 地震 动力特性 动力响应 抗滑稳定 亭子口重力坝 |
Seismic dynamic response analysis of surface sluice dam section of Tingzikou gravity dam |
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| ZHI Chengjie,QI Wenbang,HE Yunlong. Seismic dynamic response analysis of surface sluice dam section of Tingzikou gravity dam[J]. Yangtze River, 2011, 42(10): 30-35 | |
| Authors: | ZHI Chengjie QI Wenbang HE Yunlong |
| Affiliation: | ZHI Chengjie1,QI Wenbang2,HE Yunlong3(1.Hydraulic Complex Design Department,Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China,2.School of Hydraulic and Hydroelectric Engineering,Sichuan University,Chengdu 610065,3.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China) |
| Abstract: | The rock stratums in the foundation of Tingzikou gravity dam are nearly horizontal laid,and contains various weak layers.In order to evaluate the structure seismic safety and seismic anti-sliding stability of the dam,the viscoelastic artificial boundaries are used to simulate the effect of radiation damping and the thin-layer contact elements are adopted to simulate the weak layers.The three dimensional seismic time-history FEM analysis is applied to the surface hole dam section.The results show that,under ... |
| Keywords: | earthquake dynamic characteristics dynamic response anti-sliding stability Tingzikou gravity dam |
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