刘彪,张伯艳.西藏某水电站高边坡地震永久位移分析[J].中国水利水电科学研究院学报,2019,17(2):125-131
西藏某水电站高边坡地震永久位移分析
Analysis of seismic permanent displacement of a high slope for a hydropower plant in Tibet
投稿时间:2018-11-06  
DOI:10.13244/j.cnki.jiwhr.2019.02.006
中文关键词:  Newmark滑块法  永久位移  边坡稳定性  地震  Slide软件
英文关键词:Newmark sliding block analysis  permanent displacement  slope stability  earthquake  Slide software
基金项目:中国水利水电科学研究院科研专项(EB0145B382016)
作者单位E-mail
刘彪 中国水利水电科学研究院 工程抗震研究中心, 北京 100048  
张伯艳 中国水利水电科学研究院 工程抗震研究中心, 北京 100048 zhangboyan2008@163.com 
摘要点击次数: 150
全文下载次数: 200
中文摘要:
      西藏某水电站位于喜马拉雅地震带和藏中地震带交汇处,岸坡陡峭,坝址区某高边坡对枢纽工程的安全影响最大。为尽快消除该边坡的安全隐患,本文基于Slide软件选用了3条不同类型的地震波,采用Newmark滑块分析方法计算了该边坡在不同地震峰值加速度作用下的动力反应和永久位移,并采用拟静力法对该边坡在设计地震动作用下的稳定性进行了验算。计算结果表明,在设计地震动作用下该边坡是稳定的,随着地震波幅值的增加该边坡产生的总滑移量也在不断的增加;对于不同类型的地震波,虽然输入的地震峰值加速度相同,但地震动参数的差异会影响边坡产生的永久位移。研究结果可为工程单位进行类似边坡工程稳定性分析提供参考依据。
英文摘要:
      A hydropower plant in Tibet is located at the intersection of the Himalayan seismic belt and Central Tibet seismic belt,with a steep bank slope. A high slope in the dam site area has the greatest impact on the safety of the pivotal project. In order to eliminate the safety hazard of the slope as soon as possible, this paper selects three different types of seismic waves based on Slide software, and calculates the dynamic response and permanent displacement of the slope under the action of different seismic amplitudes by using Newmark sliding block analysis. The pseudostatic method is used to check the stability of the slope under the design ground motion. The calculated results show that the slope is stable under the effect of designed ground motion, and the total slip generated by the slope increases with the increase of seismic wave amplitude. For different types of seismic waves, when the input peak seismic acceleration is the same, the difference in ground motion parameters will affect the permanent displacement of the slope. The research results can provide reference for similar slope engineering stability analysis.
查看全文  查看/发表评论  下载PDF阅读器
关闭