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新型钢结构棚洞滚石冲击动力学计算研究
Alternative TitleNumerical Analysis of Dynamic Response of a New Shed Tunnel Under the Impact of Rockfall
欧阳朝军1,2; 何思明1,2; 刘泉3; 罗渝1,2
Corresponding Author何思明
2011-10
Source Publication四川大学学报(工程科学版)
ISSN1009-3087
Volume43Issue:S2Pages:105-110
Abstract

滚石灾害是山区典型的地质灾害,设计合理、经济的棚洞结构对于有效的防治夜石灾害意义重大。作者提出一种以钢结构为主要支撑、以砂土、薄钢板和EPS 泡沫材料为握凝土面板覆盖层的新型棚洞结构,依托国道213(317) 都汶路映秀到汶川段棚洞工程实例,采用Abaqus 有限元软件,计算分析了夜石冲击能量、土层覆盖层厚度以及EPS 缓冲层厚度等因素对棚洞结构动力学过程的影响。计算结果表明:新型棚洞结构具有自重轻、抗冲击能力强等特征,并且随着土层和EPS 层厚度的增加,棚洞主梁的最大竖向位移和Mises 应力明显下降,证明新型棚洞结构能够有效的提高棚洞的抗冲击能力。

Other Abstract

Rockfall hazards are usual geohazards in mountainous area, so an appropriate and economic design of rock-shed tunnel is essential to prevent damage from rockfall. A new rock-shed tunnel, which mainly consisted of the support of steel structures and concrete plate covered by sand clay and expanded polystyrene (EPS) foam, was proposed. Based on the instance of the new shed tunnel in Yingxiu-Wenchuan road and the numerical simulations of the influences from energy of rockfall, the thickness of sand clay and EPS on thedynamic response were investigated by using Abaqus software. It was demonstrated that the new rock-shed tunnel is qualitied with light weight, strong anti-shock capacity and the maximal displacement and von Mises stress in the primary beam apparently decreases with the increase of thickness of sand clay and EPS, which means that the new rock-shed tunnel can effectively improve its performance.

Keyword滚石 棚洞 Eps泡沫材料 有限元 冲击动力学
Subject AreaO347.3
Indexed ByEI ; CSCD ; 北大中文核心
Language中文
Accession numberAccession number:20114714542283
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17934
Collection山地灾害与地表过程重点实验室
Affiliation1..中国科学院山地灾害与地表过程重点实验室
2.中国科学院水利部成都山地灾害与环境研究所
3.四川省交通厅交通勘察设计研究院
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
欧阳朝军,何思明,刘泉,等. 新型钢结构棚洞滚石冲击动力学计算研究[J]. 四川大学学报(工程科学版),2011,43(S2):105-110.
APA 欧阳朝军,何思明,刘泉,&罗渝.(2011).新型钢结构棚洞滚石冲击动力学计算研究.四川大学学报(工程科学版),43(S2),105-110.
MLA 欧阳朝军,et al."新型钢结构棚洞滚石冲击动力学计算研究".四川大学学报(工程科学版) 43.S2(2011):105-110.
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