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Dynamic analysis of subway station subjected to internal blast loading
  • ISSN号:1005-9784
  • 期刊名称:Journal of Central South University of Technology
  • 时间:0
  • 页码:917-924
  • 分类:U231[交通运输工程—道路与铁道工程] O346.1[理学—固体力学;理学—力学]
  • 作者机构:[1]School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116023, China, [2]State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China
  • 相关基金:Project(50978043) supported by the National Natural Science Foundation of China
  • 相关项目:城市既有建筑区域地下空间开发的地震环境扰动及风险控制研究
中文摘要:

学习被在地铁结构内的那爆炸不能仅仅引起直接生活损失的事实激发,而且损坏地铁结构并且导致生活和性质的进一步的损失。在地铁车站的爆炸波浪的繁殖法律被分析,在地铁车站的过压的一个简化模型也被建议。然后,土壤的改进动态凸轮泥土模型和水泥损坏了组成的模型被用于的粘性地铁车站的动态分析。同时,土壤僵硬的影响和地铁车站的动态反应上的埋葬深度被调查。结果证明在地铁车站的多山峰过压不出现,并且大压力专注于中央列和地铁车站的地板平板,因此一些特殊加强措施应该在这些部分被采取。中央列的压力上的土壤僵硬和埋葬深度的效果是很少;然而,车站方面墙的压力上的效果是相对明显的。

英文摘要:

The study was motivated by the fact that explosion inside the subway structure may not only cause direct life loss, but also damage the subway structure and lead to further loss of lives and properties. The propagation law of explosion wave in the subway station was analyzed and a simplified model of overpressure in the subway station was also proposed. Whereafter, the improved dynamic cam-clay model of soil and the concrete damaged plasticity constitutive model were used for the dynamic analysis of the subway station. Meanwhile, the influences of soil stiffness and burial depth on the dynamic response of the subway station were looked into. The results show that the multi-peak overpressure in the subway station does not appear, and large stresses concentrate on the central column and the floor slab of the subway station, so some special reinforcement measures should be taken in these parts. The effect of soil stiffness and burial depth on the stress of the central column is little; however, the effect on the stress of the station side wall is relatively obvious.

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