ABSTRACT

The current blast wall design guidelines do not capture the random nature of underlying parameters. The main issues are the appropriate treatment of various uncertainties in the explosion loadings and the complex blast wall behaviour considering dynamic and nonlinearity effects. To capture these effects a new methodology needs to be developed based on probabilistic reliability assessment. To address this, the present study presents a framework for performance-based assessment of stainless-steel profiled barrier blast walls. Initially, a blast wall including consideration of the upper and lower connections is developed using an enhanced APDL finite element modelling programming package. For the performance-based design, blast wall structures are studied at serviceability, damage control and collapse prevention levels. The design criteria and the maximum allowable response values are initially investigated and discussed and subsequently optimal response target values are proposed for a performance-based assessment approach under various explosion loadings (i.e. hazards).

摘要

当前的防爆墙设计指南没有捕捉到基础参数的随机性。主要问题是适当处理爆炸载荷中的各种不确定性以及考虑动态和非线性效应的复杂防爆墙行为。为了捕捉这些影响，需要开发一种基于概率可靠性评估的新方法。为了解决这个问题，本研究提出了一个基于性能的不锈钢异形屏障防爆墙评估框架。最初，使用增强的 APDL 有限元建模编程包开发了包括上下连接在内的防爆墙。对于基于性能的设计，防爆墙结构在适用性、损坏控制和倒塌预防水平上进行研究。