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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2017, Vol. 36 ›› Issue (11): 61-65.DOI: 10.3969/j.issn.1674-0696.2017.11.12

• 港口航道·水利水电·资源环境 • 上一篇    下一篇

边坡动力稳定性分析的时程传递系数法

丁王飞1，2，张春丽1，张乃计2   

  1. （1.重庆建筑工程职业学院，重庆 400072；2.重庆交通大学 土木工程学院，重庆 400074）
  • 收稿日期:2016-11-01 修回日期:2017-01-05 出版日期:2017-11-19 发布日期:2017-11-19
  • 作者简介:丁王飞（1984—），男，安徽铜陵人，讲师，博士，主要从事道路岩土病害机理及控制方面的研究。E-mail：dingwanfei_@163.com。
  • 基金资助:
    国家自然科学基金项目（51378520）；重庆市教委科学技术研究项目（KJ1740469）；重庆市高等教育教学改革研究项目（153296）

Time-History Transferring Coefficient Method of Analysis on Slope Dynamic Stability

DING Wangfei1,2，ZHANG Chunli1，ZHANG Naiji2   

  1. （1.Chongqing Jianzhu College,Chongqing 400072,P.R.China; 2.School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,P.R.China）
  • Received:2016-11-01 Revised:2017-01-05 Online:2017-11-19 Published:2017-11-19

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摘要： 传递系数法是边坡稳定性计算常用方法之一。水平地震力是边坡动力稳定性影响的主要因素，针对传统边坡稳定性计算的传递系数法，将地震加速度时程 通过地震力形式归于传递系数法中的条块传递系数，计算传递系数时程，进而得到地震动力稳定系数时程，基于此提出了边坡动力稳定性分析的时程传递 系数法。算例讨论得出，当地震加速度大于-0.2时，传递系数呈现出先减小后增加、再减小的整体趋势，反之，传递系数随条块表现为持续降低的规律； 当地震加速度小于0时，加速度方向为反坡向，对边坡稳定性有利，反之，加剧边坡的危险性；随着地震加速度的递增，不同条块的传递系数不断线性增 大。岩质边坡在地震力作用下破坏具有滞后性和突发性。

关键词: 地震工程, 时程传递系数, 时程稳定系数, 边坡

Abstract: The transferring coefficient method is one of common methods to calculate the slope stability. The horizontal seismic force is the main factor that affects the dynamic stability of the slope. Aiming at the transferring coefficient method for the traditional slope stability calculation, the time-history of seismic acceleration was classified as block transferring coefficient by seismic force in the transferring coefficient method. The time-history of transferring coefficient was calculated, and then the time-history of seismic dynamic stability coefficient was obtained. Therefore, the time-history transferring coefficient method of the analysis on the slope dynamic stability was proposed. According to the discussion on case studies, it is obtained that the transferring coefficient decreases early and increases later, and decreases again lastly when the seismic acceleration is greater than -0.2; conversely, the transferring coefficient presents the law of continuous decrease according to the block. When the seismic acceleration is less than 0, the direction of acceleration is the opposite direction of slope, which is beneficial for the slope stability; conversely, it will increase risks of the slope. With the increase of the seismic acceleration, the transferring coefficients of different blocks increase gradually and linearly. The failure of rock slope under the seismic force is lagging and sudden.

Key words: earthquake engineering, time-history transferring coefficient, time-history stability coefficient, slope

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