Numerical Simulation Study of Progressive Collapse of Reinforced Concrete Frames with Masonry Infill Walls under Blast Loading

IF 0.8 Q3 ENGINEERING, MULTIDISCIPLINARY

Modelling and Simulation in Engineering Pub Date : 2022-11-11 DOI:10.1155/2022/1781415

Qinghua Xu, Xuezhi Zhen, Yu Zhang, Mengjun Han, Wenkang Zhang

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引用次数: 2

Abstract

The influence of masonry infill walls on the progressive collapse performance of reinforced concrete (RC) frame structures was investigated in this paper, using a nonlinear dynamic analysis approach. Based on ANSYS/LS-DYNA finite element software, two finite element models of RC frame structures with and without masonry infilled walls were established. Then, the collapse modes of the two RC frame structure models were analyzed for different scaled distance blast loads, different locations of column damage, and different span numbers. The results show that with the increase of explosive amount, the collapse degree of the structure is more serious in the same time. Under the condition of destroying the outermost central column, the degree of progressive collapse of the RC frame model with infilled walls in the same time is lower than that of the RC frame model without infilled walls. The RC frame model with infilled walls is more resistant to collapse when the outermost side columns are damaged. With the increase of span number, the structure is more likely to be damaged and collapsed.

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爆破荷载作用下砌体填充墙钢筋混凝土框架连续倒塌数值模拟研究

采用非线性动力分析方法，研究了砌体填充墙对钢筋混凝土框架结构连续倒塌性能的影响。基于ANSYS/LS-DYNA有限元软件，建立了有无砌体填充墙的RC框架结构有限元模型。然后，分析了两种RC框架结构模型在不同比例距离爆炸荷载、不同柱损伤位置和不同跨数下的倒塌模式。结果表明，随着爆炸量的增加，结构的倒塌程度也随之加重。在最外侧中心柱被破坏的情况下，有填充墙的RC框架模型在同一时间内的渐进倒塌程度低于没有填充墙的RC框架模型。填充墙混凝土框架模型在最外侧柱被破坏时具有更强的抗倒塌能力。随着跨数的增加，结构破坏和倒塌的可能性增大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Modelling and Simulation in Engineering ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.70

自引率

3.10%

发文量

审稿时长

18 weeks

期刊介绍： Modelling and Simulation in Engineering aims at providing a forum for the discussion of formalisms, methodologies and simulation tools that are intended to support the new, broader interpretation of Engineering. Competitive pressures of Global Economy have had a profound effect on the manufacturing in Europe, Japan and the USA with much of the production being outsourced. In this context the traditional interpretation of engineering profession linked to the actual manufacturing needs to be broadened to include the integration of outsourced components and the consideration of logistic, economical and human factors in the design of engineering products and services.