Dynamic Response and Safety Coefficient Calculation of Slope under Severe Earthquake

doi:10.3969/j.issn.1674-0696.2011.02.23

Journal of Chongqing Jiaotong University(Natural Science) ›› 2011, Vol. 30 ›› Issue (2): 277-281.DOI: 10.3969/j.issn.1674-0696.2011.02.23

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Dynamic Response and Safety Coefficient Calculation of Slope under Severe Earthquake

YANG Jie¹, YANG Shangqing², XIAO Shengxie¹

1.Institute of Disaster Prevention Engineering, Chongqing Jiaotong University, Chongqing 400074, China;2.College of Architecture and Environment, Sichuan University, Chendu 610207, Sichuan, China

Received:2011-03-01 Revised:2011-03-08 Online:2011-04-15 Published:2015-03-12

强震边坡动力响应及安全系数计算

杨洁¹，杨上清²，肖盛燮¹

1.重庆交通大学防灾减灾研究所，重庆400074; 2.四川大学建筑与环境学院，四川成都610207

作者简介:杨洁(1987 — )，女，四川巴中人，硕士研究生，主要从事岩土边坡工程稳定性及其数值分析方面的研究。E-mail:yj888001@yahoo.com.cn。
基金资助:
国家自然科学基金项目(50879097)

Abstract

Abstract: A seismic analysis of a uniform slope was made through ANSYS. According to the Wilson-θ time history analysis and dynamic response analysis of stress, displacement, velocity and acceleration w ere done under the Tianjin seismic which was input into the slope model. In the POST1, safety factor was calculated through stress field by Moore- coulomb’s Strength Theory; safety coefficient distribution map was obtained. When safety factor w as 0.521, a section crossed volley border, there fore it had the possibility of sliding. It was demonstrated that the model with safety coefficient 0.521 was unstable.

Key words: earthquake, slope, dynamic response, safety coeffiient

摘要： 运用ANSYS大型通用软件,对一均质边坡进行地震荷载模拟分析；根据Wilson-时程分析方法,将天津地震波输入到边坡模型上,对该边坡进行了应力、位移、速度和加速度动力响应分析。并由摩尔-库伦强度理论对 ANSYS通用后处理器进行编程,得出边坡的安全系数分布云图。当安全系数为0.521时,全图的部分穿越临空边界,有滑移的可能,得出该模型不稳定,安全系数为0.521。

关键词: 地震, 边坡, 动力响应, 安全系数

CLC Number:

X43
U416.1

YANG Jie, YANG Shangqing, XIAO Shengxie. Dynamic Response and Safety Coefficient Calculation of Slope under Severe Earthquake[J]. Journal of Chongqing Jiaotong University(Natural Science), 2011, 30(2): 277-281.

杨洁，杨上清，肖盛燮. 强震边坡动力响应及安全系数计算[J]. 重庆交通大学学报（自然科学版）, 2011, 30(2): 277-281.

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Dynamic Response and Safety Coefficient Calculation of Slope under Severe Earthquake

强震边坡动力响应及安全系数计算

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