[1]高文军.地震后泥石流灾害柔性防治冲击动力响应分析[J].华南地震,2020,40(02):105-110.[doi:10.13512/j.hndz.2020.02.016]
　Analysis of Impact Dynamic Response of Debris Flow Disasters after Earthquake.[J].South China journal of seismology,2020,40(02):105-110.[doi:10.13512/j.hndz.2020.02.016]
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地震后泥石流灾害柔性防治冲击动力响应分析()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2020年02期
页码:
105-110
栏目:
出版日期:
2020-06-30

文章信息/Info

作者:
高文军
（中铁西北科学研究院有限公司 , 兰州 730000）
Author(s):
Analysis of Impact Dynamic Response of Debris Flow Disasters after Earthquake
关键词:
地震; 泥石流灾害; 柔性防治冲击动力; 响应分析
Keywords:
GAO Wenjun
分类号:
TV641
DOI:
10.13512/j.hndz.2020.02.016
文献标志码:
A
摘要:
采用当前方法分析地震后泥石流灾害柔性防治冲击的动力响应时 , 不能准确的分析柔性防护体系随时间变化产生的位移变化以及落石在冲击过程中对柔性防护体系的冲击时间与能量关系 , 得到的分析结果与实际不符 , 存在分析准确率低的问题。提出地震后泥石流灾害柔性防治冲击动力响应分析方法 , 构建防护体系有限元模型 , 利用 Lagrange 描述方法在连续介质力学的基础上构建撞击系统对应的控制方程以及弹塑性材料接触力学模型 , 在以上两个模型的基础上通过 ANSYS/LS-DYNA 软件模拟甘肃省陇南市某泥石流治理工程环境 , 通过分析柔性防护体系随时间变化产生的位移变化以及落石在冲击过程中对柔性防护体系的冲击时间与能量关系 , 实现地震后泥石流灾害柔性防治冲击动力的响应分析。实验结果表明 , 所提方法的的分析准确率较高。
Abstract:
When using the current method to analyze the dynamic response of the flexible prevention and control impact of debris flow disaster after earthquake, the displacement change caused by the flexible protection system over time and relationship between the impact time and energy of the falling rock on the flexible protection system during the impact process cannot be accurately analyzed. The result is inconsistent with the actual situation, and there is a problem that the analysis accuracy is low. The impact dynamic response analysis method of debris flow disaster prevention after earthquake is proposed, and the finite element model of the protection system is constructed. The Lagrange description method is used to construct the control equation corresponding to the impact system and the elastoplastic material contact mechanics model based on the continuum mechanics. Based on the model , ANSYS/LS-DYNA software was used to simulate a debris flow control engineering environment in Weinan City, Gansu Province. The displacement change caused by the flexible protection system over time and relationship between the impact time and energy of the falling rock during the impact process on the flexible protection system is analyzed. The response analysis of the flexible control of the debris flow disaster after the earthquake is realized. The experimental results show that the analytical accuracy of the proposed method is high.

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备注/Memo

备注/Memo:
收稿日期 :2019-09-08 作者简介 : 高文军（ 1987- ）, 男 , 工程师 , 主要从事滑坡、泥石流、地基处理等地质灾害工程的防治与研究。 E-mail:gwjun001@163.com
更新日期/Last Update: 2020-08-11