|本期目录/Table of Contents|

[1]赵敏,周子豪.爆炸荷载下地铁隧道损伤规律研究[J].中国安全生产科学技术,2019,15(8):118-123.[doi:10.11731/j.issn.1673-193x.2019.08.019]
 ZHAO Min,ZHOU Zihao.Study on damage laws of subway tunnel under explosive load[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(8):118-123.[doi:10.11731/j.issn.1673-193x.2019.08.019]
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爆炸荷载下地铁隧道损伤规律研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年8期
页码:
118-123
栏目:
职业安全卫生管理与技术
出版日期:
2019-08-31

文章信息/Info

Title:
Study on damage laws of subway tunnel under explosive load
文章编号:
1673-193X(2019)-08-0118-06
作者:
赵敏周子豪
(西安工业大学 建筑工程学院,陕西 西安 710021)
Author(s):
ZHAO MinZHOU Zihao
(School of Architecture and Engineering,Xi’an Technological University,Xi’an Shaanxi 710021,China)
关键词:
地铁隧道衬砌结构爆炸荷载应力波数值模型动力响应损伤分析
Keywords:
subway tunnel lining structure explosive load stress wave numerical model dynamic response damage analysis
分类号:
X93;U25
DOI:
10.11731/j.issn.1673-193x.2019.08.019
文献标志码:
A
摘要:
地铁在运营中存在诸多风险,特别是外爆炸带来的危害尤为突出。为避免由此产生的风险,需对地铁隧道在外部侧爆炸瞬时强荷载作用下隧道衬砌结构损伤效应进行研究,进而对隧道衬砌结构的损伤程度作出判断。以西安地铁6号线工程为依托,利用ANSYS/LS-DYNA软件建立有限元模型,分析外爆炸荷载作用下应力波的传播规律;选取地面侧爆角度和隧道埋置深度2个因素建立分析工况,研究了外爆炸荷载下隧道衬砌结构的受力状态规律,隧道埋深15,18 m相较埋深12 m衰减了20,125个微应变;同时直观地对隧道衬砌结构的损伤程度进行分析。开展该项研究为地铁隧道结构抗爆防护设计提供了理论依据,具有较高的技术、经济和社会效率。
Abstract:
There are many risks in the operation of subway,especially the harm caused by the external explosion.In order to avoid the resulting risk,it is necessary to study the damage effect of the tunnel lining structure under the instantaneous strong load of explosion on the external side of subway tunnel,thus to judge the damage degree of the tunnel lining structure.Based on the project of Xi’an Metro Line 6,the finite element model was established by using ANSYS/LS-DYNA software to analyze the propagation laws of stress wave under the action of external explosion load.The analysis conditions were established by choosing two factors:the angle of side explosion on the ground and the buried depth of tunnel.The stress state laws of tunnel lining structure under external explosion load were studied.The microstrain attenuated by 10 and 125 for the buried depth of tunnel as 15 m and 18 m respectively compared with that for the buried depth of tunnel as 12 m.At the same time,the damage degree of tunnel lining structure was analyzed intuitively.The research provides the theoretical basis for the explosionproof design of subway tunnel structure,and has high technical,economic and social efficiency.

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备注/Memo

备注/Memo:
收稿日期: 2019-07-02
作者简介: 赵敏,博士,教授,主要研究方向为岩土工程。
通信作者: 周子豪,硕士研究生,主要研究方向为桥梁与隧道工程。
更新日期/Last Update: 2019-09-04