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| 岩体弹粘塑性显式波动有限元分析 | |
| 引用本文： | 刘红帅,唐立强,薄景山,冯志仁.岩体弹粘塑性显式波动有限元分析[J].煤田地质与勘探,2009,37(1). |
| 作者姓名： | 刘红帅 唐立强 薄景山 冯志仁 |
| 作者单位： | 1. 哈尔滨工程大学航天与建筑工程学院,黑龙江,哈尔滨,150001;中国地震局工程力学研究所,黑龙江,哈尔滨,150080 2. 哈尔滨工程大学航天与建筑工程学院,黑龙江,哈尔滨,150001 3. 中国地震局工程力学研究所,黑龙江,哈尔滨,150080;防灾科技学院,河北,三河,065201 4. 中国地震局工程力学研究所,黑龙江,哈尔滨,150080 |
| 基金项目： | 中国地震局工程力学研究所基本科研业务费专项资助项目，国家自然科学基金 |
| 摘 要： | 真实反映地震动传播特性的分析方法是准确描述岩体地震反应的基础.基于显式波动有限元,采用能够考虑应变率影响的弹粘塑性本构模型,提出了一种用于分析岩体地震反应的新方法,编制了相应的计算程序.以均质岩石边坡为例,计算了EL-CENTRO波输入下边坡的位移和应力反应,并将计算结果与采用粘弹性本构模型的结果进行了比较,初步验证了程序的可靠性.计算结果表明,所提出的新方法能够较合理地计算出地震作用下边坡的永久位移和残余应力. |
| 关 键 词： | 岩体 弹粘塑性模型 显式波动有限元 永久位移 残余应力 |
Elastic-viscoplastic analysis of explicit FEM for simulating wave motions in rock mass |
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| LIU Hongshuai,TANG Liqiang,BO Jingshan,FENG Zhiren.Elastic-viscoplastic analysis of explicit FEM for simulating wave motions in rock mass[J].Coal Geology & Exploration,2009,37(1). | |
| Authors: | LIU Hongshuai TANG Liqiang BO Jingshan FENG Zhiren |
| Institution: | 1.School of Aerospace and Civil Engineering;Harbin Engineering University;Harbin 150001;China;2.Institute of Engineering Mechanics;China Earthquake Administration;Harbin 150080;3.Institute of Disaster-prevention and Science and Technology;Sanhe 065201;China |
| Abstract: | The analysis method that can exactly reflect the characteristics of ground motion transmitting is the basis for describing seismic response of rock mass.Based on explicit wave motion finite element method(FEM),a new method was suggested by using an elastic-viscoplastic constitutive model which considered the effect of strain rate on dynamic properties of rock mass.According to this method,a computation program was compiled and was ap-plied in the analysis of uniform rock slope.The slope displacement and str... |
| Keywords: | rock mass elastic-viscoplastic model explicit FEM for simulating wave motions permanent displacement residual stress |
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