工程爆破

2020, v.26(04) 28-34

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内爆作用下不同类型填充墙对RC框架结构的影响
Influence of different types infill walls on RC frame structure under implosion

李娟;丛培宇;刘香;李革;郭建圆;
LI Juan;CONG Pei-yu;LIU Xiang;LI Ge;GUO Jian-yuan;College of Civil Engineering, Inner Mongolia University of Science and Technology;

摘要(Abstract):

为了研究内爆作用下不同类型填充墙对RC框架结构的影响,减轻RC框架结构在爆炸荷载作用下的破坏程度,采用ANSYS/LS-DYNA软件对已有的RC框架结构、碳纤维布加固砌块填充墙爆炸试验进行数值模拟。通过模拟结果和试验结果的对比分析,验证了采用的数值模拟方法及参数设置是合理和适用的。在此基础上,通过数值模拟研究2层L型RC框架结构在相同内爆条件下,分别设置普通混凝土砌块填充墙、碳纤维布加固砌块填充墙、加固泄爆组合填充墙时构件的损坏程度。研究结果表明:在相同内爆作用下,设置不同类型填充墙的RC框架结构的破坏程度和破坏形态有明显差异,填充墙体对内爆作用下RC框架结构的影响不容忽视;全面采用碳纤维布加固砌块填充墙虽可减少爆炸引起的墙体碎片飞溅,但会使内爆作用下的RC框架结构产生较为严重的破坏,顾此失彼;与其他两种填充墙相比,采用加固泄爆组合填充墙可以有效减轻内爆作用下RC框架结构的破坏程度,减少爆炸引起的墙体碎片飞溅。
In order to study the influence of different types infill walls on the RC frame structure under the action of implosion, and reduce the damage degree of the RC frame structure under the action of explosion load, ANSYS/LS-DYNA software was used to simulate the explosion test of the existing RC frame structure and carbon fiber cloth reinforced blocks infill wall. Through the comparative analysis of simulation results and test results, it is verified that the numerical simulation methods and parameter settings adopted are reasonable and applicable. On this basis, numerical simulation is used to study the damage degree of the components of the two-story L-shaped RC frame structure under the same implosion conditions, with ordinary concrete block infill walls, carbon fiber cloth reinforced block infill walls, and explosion venting combined infill walls. The research results show that under the same implosion effect, the damage degree and the failure mode of the RC frame structure with different types infill walls are obviously different. The influence of the infill wall on the RC frame structure under the implosion cannot be ignored. Although the full use of carbon fiber cloth to reinforced block-filled wall can reduce the splashing of wall fragments caused by the explosion, it will cause more serious damage to the RC frame structure under the action of implosion, attend to one thing and lose sight of another. Compared with the other two types of infill walls, the use of reinforced explosion venting combined filling the wall can effectively reduce the damage of the RC frame structure under the action of implosion, and can reduce the splashing of wall fragments caused by the explosion.

关键词(KeyWords): 内爆作用;RC框架结构;填充墙;数值模拟
implosion effect;RC frame structure;infill wall;numerical simulation

Abstract:

Keywords:

基金项目(Foundation): 内蒙古自然科学基金资助项目(2018LH05022)

作者(Authors): 李娟;丛培宇;刘香;李革;郭建圆;
LI Juan;CONG Pei-yu;LIU Xiang;LI Ge;GUO Jian-yuan;College of Civil Engineering, Inner Mongolia University of Science and Technology;

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