2020年8月4日爆炸对贝鲁特港筒仓土-结构相互作用影响的评价:耦合欧拉-拉格朗日方法

IF 2.7 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Ali Jahami, Jana Halawi, Yehya Temsah, Lina Jaber
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引用次数: 0

摘要

由于爆炸载荷对周围介质的威胁,近几十年来爆炸载荷已成为研究的主题。2020年8月4日,贝鲁特港发生巨大爆炸,导致周围介质遭受巨大破坏。研究人员已经进行了研究,以估计等效爆炸质量以及对结构的破坏程度;然而,这些研究都是用简单的方法来考虑土-结构相互作用。为此,本文旨在了解爆炸对港口粮仓结构的影响,重点研究土-结构相互作用效应。该结构由一组筒仓组成,这些筒仓位于由一组灌注桩支撑的木筏基础上。采用适用于大变形事件的耦合欧拉-拉格朗日方法,对贝鲁特爆炸引起的土体行为、桩内损伤程度和土-结构相互作用进行了土-结构模型分析。采用ABAQUS/Explicit FEM软件(6.14版)进行分析,考虑土介质特性、土-结构界面接触算法和边界条件,更好地模拟实际现场情况,保证结果的准确性。这项工作主要通过现场数据进行验证,例如弹坑大小和筒仓损坏情况。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of Soil–Structure Interaction Effects on the Beirut Port Silos Due to the 4 August 2020 Explosion: A Coupled Eulerian–Lagrangian Approach
Blast loadings have become the subject of research in recent decades due to the threats they pose to the surrounding medium. On 4 August 2020, a huge explosion occurred in the Port of Beirut that led to massive damages in the medium surrounding it. Researchers have conducted studies in order to estimate the equivalent explosive mass as well as the damage extent left on structures; however, the studies considered the soil–structure interaction by simple methods. For that, this paper aims to understand the effect of explosion on the grain silo structure present at the port with an emphasis on the soil–structure interaction effects. The structure consists of a group of silos resting on a raft footing that is supported by group of driven piles. A soil–structure model analysis is performed in order to investigate the soil behavior, the damage extent in piles, and the soil–structure interaction due to the Beirut explosion using the CEL (Coupled Eulerian–Lagrangian) approach that suits events involving large deformation. The analysis is performed using the ABAQUS/Explicit FEM software (version 6.14) taking into account the properties of soil medium, the contact algorithm at the soil–structure interface, and the boundary conditions in order to better simulate the real field conditions and ensure accurate results. The work is primarily validated through site data such as the crater size and silo damage.
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来源期刊
Infrastructures
Infrastructures Engineering-Building and Construction
CiteScore
5.20
自引率
7.70%
发文量
145
审稿时长
11 weeks
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