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轻型门式刚架结构在暴雪中坍塌事故频发,造成巨大的生命和财产损失.本文统计了国内外在暴雪天气中遭到破坏的轻型门式刚架结构,对破坏形式和原因进行总结分析.首先,将其破坏形态分为整体垮塌破坏和损伤性破坏两大类,其中整体垮塌破坏分为梁破坏、节点破坏、柱破坏和支座破坏四种,损伤性破坏分为檩条平面外失稳破坏、屋面局部凹陷破坏和支撑破坏三种.随后针对不同的破坏形态对其破坏原因进行分析,应用ANSYS对轻型门式刚架破坏的一般模式和机理进行了探讨,并为提升轻型门式刚架结构的安全性能提出一些措施和建议.本文的总结分析有利于对轻型门式刚架结构在超越雪荷载作用下的破坏形式和机理有更深入的理解,为防止该类结构的破坏提供措施与建议.
Lightweight gantry structure collapses frequently in Blizzard, resulting in huge loss of life and property.This paper calculates the light gantry structure damaged in the blizzard at home and abroad, and summarizes the forms and causes of the damage First of all, the disintegration patterns are divided into two categories: the whole collapse damage and the damage damage, in which the overall collapse damage is divided into four types: beam failure, node failure, column failure and bearing destruction, and the damage damage is divided into the out-of-plane loss Stability damage, partial roof sag damage and support damage three kinds.And then, according to different failure modes to analyze the reason of sabotage, the general mode and mechanism of failure of light gantry frame with ANSYS are discussed, Some suggestions are put forward for the safety performance of the rigid frame structure.The analysis and analysis of this article is helpful to understand the form and mechanism of the damage of the lightweight gantry frame under the effect of snow load excessively, Measures and Suggestions.