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针对低压影响青藏铁路客车中空玻璃使用问题,直接由中空玻璃内外片玻璃两面承受的气体压差导致的变形求出中空层体积变化,并结合中空层气体理想状态方程,精确定量地计算了低压环境下中空玻璃变形及应力分布大小。分析了给车厢补压状态下中空玻璃的承载特性及满足设计压差下的中空玻璃结构尺寸要求。同时,对目前使用的自动调压式中空玻璃的承载特性及存在的问题进行了分析。
Aimed at the problem of low pressure affecting the use of hollow glass in passenger cars on Qinghai-Tibet Railway, the volume change of the hollow layer was calculated directly from the deformation caused by the pressure difference between the two sides of the glass inside and outside the hollow glass. Combined with the ideal equation of the gas in the hollow layer, Under the hollow glass deformation and stress distribution size. The load-bearing characteristics of hollow glass under the condition of pressure compensation and the requirements of hollow glass structure under design pressure difference were analyzed. At the same time, the load characteristics and existing problems of the auto-adjusting insulating glass currently used are analyzed.