| 高耸进水塔结构在地震作用下的动态响应分析 |
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| 引用本文： | 李骞,李宁,任堂,雷光宇.高耸进水塔结构在地震作用下的动态响应分析[J].地震学刊,2014(1):58-66. |
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| 作者姓名： | 李骞 李宁 任堂 雷光宇 |
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| 作者单位： | [1]西安理工大学岩土工程研究所,西安710048 [2]中水北方勘测设计研究有限责任公司水工处,天津300222 |
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| 基金项目： | 国家自然科学基金项目（51179153）;国家自然科学基金创新群体项目（40821001）资助 |
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| 摘 要： | 针对低周往返地震作用下的应力释放和应力调整规律,引入动态接触单元,采用El Centro地震动时程分析法,研究了接触非线性问题的高耸结构动态接触分析方法。对比分析弹性连接和动态接触方法的差异性,针对进水塔相互作用体系动力特性及响应影响规律进行讨论,将该模拟方法应用到5·12汶川地震作用下的紫坪铺1#泄洪塔工程。分析认为：考虑动态接触更符合地震作用下进水塔的实际受力情况;振动位移、速度、加速度更多地取决于地基特性,受上部结构刚度变化的影响不大;该塔体的整体稳定性可以保证,与震后复核结果相符。采用动态接触研究进水塔-岩体联合动力相互作用是十分必要的。
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| 关 键 词： | 进水塔 时程分析 岩石力学 动态接触 地震响应 |
Dynamic Response Analysis of High Intake Tower Structures under Earthquake Action |
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| LI Qian,LINing,REN Tang,LEI Guang-yu.Dynamic Response Analysis of High Intake Tower Structures under Earthquake Action[J].Journal of Seismology,2014(1):58-66. |
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| Authors: | LI Qian LINing REN Tang LEI Guang-yu |
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| Institution: | 1. Institute of Geotechnical Engineering, Xi＇an University of Technology, Xi1an 710048,China Hydraulic Department, China Water Resources Beifang Investigation Design and Research CO. LTD, Tianjin 300222, China) |
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| Abstract: | According to the rules of stress release and stress adjustment of structure under low- frequency cyclic earthquake action, this paper introduces dynamic contact element and adopts ground motion time histroy of E1 Centro to study contact nonlinear problem about dynamic con- tact analysis method for towering structure , comparatively analyzes the difference between etastic contact and dynamic contact methods, discusses dynamic behavior and response influence rule of intake tower interaction system. This method was used for Zipingpu 1 # intake tower under ac- tion of ＂5.12＂ Wenchuan earthquake loads. Results show that considering the dynamic contact is more consistent with the actual condition of intake tower under earthquake loads, the displace- ment ,velocity and acceleration depend more on the character of the foundation, and have little effect from the change of superstructure stiffness, the overall stability of tower can be guaranteed which accords with field check results after earthquake. Therefore, using dynamic contact method to research intake tower -rock mass combined dynamic interaction is very necessary. |
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| Keywords: | ： intake tower time-history analysis rock mechanics dynamic contact seismic response |
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