The design of blast-resistant glazed façades can be required by building standards. The high-pressure generated by the blast wave air-front can lead to catastrophic failure of the glass panes and/or their load-bearing structure, with possible projection of fragments that constitutes a potential threat for human lives and properties. The time-dependent deformations-history is usually assessed via numerical analyses and/or experimental investigations, but it is difficult to recognize the role of each element in the complex dynamic response. As a guide to structural design, we here propose a simple analytical model that permits a synthetic but comprehensive view of the phenomenon. The dynamic interaction among the blast wave, the ensemble of glazed panels and load-bearing structure is studied in paradigmatic lumped-element models, representing glass panels supported by tensioned cables, using Rayleigh’s method to reduce the response of each glass panel to a non-linear single degree-of-freedom oscillator. The dynamic equations are solved under blast pressure modeled via the Friedlander’s waveform. This analytical treatment quantifies the importance of the load-bearing structure in absorbing energy from the blast wave.

建筑标准可能要求设计防爆玻璃幕墙。爆炸波前空产生的高压会导致玻璃板和/或其承载结构的灾难性破坏，碎片的可能投射对人类的生命和财产构成潜在威胁。与时间有关的变形历史通常通过数值分析和/或实验研究，但很难识别每个元素在复杂动态响应中的作用。作为结构设计的指南，我们在这里提出一个简单的分析模型，该模型可以对现象进行综合而全面的观察。爆炸波，玻璃板整体与承重结构之间的动态相互作用在范式集总模型中进行了研究，该模型表示由张紧的电缆支撑的玻璃板，使用瑞利方法来减少每个玻璃板对非玻璃板的响应。线性单自由度振荡器。动力学方程在爆炸压力下通过弗里德兰德的波形。这种分析处理量化了承重结构在吸收来自爆炸波的能量中的重要性。