地震后地下受损拱结构的抗爆炸能力研究

doi:10.3969/j.issn.1000-1093.2017.09.010

兵工学报 ›› 2017, Vol. 38 ›› Issue (9): 1736-1744.doi: 10.3969/j.issn.1000-1093.2017.09.010

地震后地下受损拱结构的抗爆炸能力研究

唐廷¹，周健南²

(1.海军勤务学院，天津 300450； 2.陆军工程大学，江苏南京 210007）

收稿日期:2016-07-28 修回日期:2016-07-28 上线日期:2017-11-03
通讯作者: 周健南（1979—），男，副教授，博士 E-mail:zjn_0414@163.com
作者简介:唐廷（1980—），男，讲师，博士后。 E-mail:kublai@126.com
基金资助:
国家自然科学青年基金项目（51308544）；解放军理工大学预先研究基金项目(KYDXZLXY1301)

Study of Anti-blasting Ability of Damaged Underground Arch Structure after Earthquake

TANG Ting¹, ZHOU Jian-nan²

（1.Naval Logistics College of PLA, Tianjin 300450, China; 2.Army Engineering University, Nanjing 210007, Jiangsu，China)

Received:2016-07-28 Revised:2016-07-28 Online:2017-11-03

摘要/Abstract

摘要： 为了评估地下结构的地震后抗爆炸能力，以边墙高3.0 m、半径3.0 m的半圆拱结构为模拟对象，假定了7种裂缝可能出现的位置。采用网格划分软件TrueGrid构建网格模型，基于LS-DYNA数值模拟分析地下拱结构在1条裂缝、2条裂缝和3条裂缝条件下的抗爆炸能力。分析结果表明：1条裂缝存在的条件下，地下拱结构的抗爆炸能力平均下降50%以上，裂缝的位置对地下拱结构的抗爆炸能力有明显影响，底板与边墙连接处的裂缝影响最大，拱顶正中的竖向裂缝影响最小；多条裂缝条件下的抗爆炸能力与单一裂缝相比没有明显区别，其抗爆炸能力的大小与各条裂缝单独存在时的最小抗爆炸能力相等。

关键词: 爆炸力学, 地震, 地下结构, 数值模拟

Abstract: The evaluation of anti-blasting ability of underground structures has become a new research subject since earthquake can seriously damage the underground structures. A semicircular arch structure with radius of arch of 3.0 m and height of side wall of 3.0 m is simulated, and seven kinds of cracks at different locations are presumed. TrueGrid is used to construct a mesh model, and then the anti-blasting ability of underground arch structure is numerically simulated by LS-DYNA. The results show that the anti-blasting ability of underground arch structure with a crack is dropped by more than 50%. The anti-blasting ability of underground arch structure is affected by the location of cracks. The cracks between floor and side wall have the greatest effects on its anti-blasting ability and the cracks in arch crown have the least effects on its anti-blasting ability. The anti-blasting ability of arch structure with multi-cracks is not obviously different to that of arch structure with a single crack, and the anti-blasting ability is equal to the least value of anti-blasting ability when the cracks exist singly. Key

Key words: explosionmechanics, earthquake, undergroundstructure, numericalsimulation

中图分类号:

唐廷，周健南. 地震后地下受损拱结构的抗爆炸能力研究[J]. 兵工学报, 2017, 38(9): 1736-1744.

TANG Ting, ZHOU Jian-nan. Study of Anti-blasting Ability of Damaged Underground Arch Structure after Earthquake[J]. Acta Armamentarii, 2017, 38(9): 1736-1744.

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地震后地下受损拱结构的抗爆炸能力研究

Study of Anti-blasting Ability of Damaged Underground Arch Structure after Earthquake

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