全玻幕墙中玻璃肋稳定性的试验研究

近年来，全玻幕墙在大型公共建筑中得到广泛使用，玻璃肋稳定性问题也受到了工程界的广泛关注，然而现行规范中对玻璃肋稳定性的计算尚没有明确规定。文章进行11组不考虑侧向约束和10组考虑侧向约束的玻璃肋试件的稳定性试验，且考虑不同的玻璃肋厚度的影响，结果表明：玻璃肋承受面内荷载时总伴随平面外弯扭失稳，且侧向弯扭幅度随玻璃肋厚度的增加而显著减小。玻璃面板为玻璃肋长边提供的侧向约束作用显著，玻璃肋的承载力可提高1倍左右。

Experimental study on the stability of glass ribs in full glass curtain wall

In recent years, the full glass curtain wall has been widely used in public buildings. The out-of-plane stability of the glass ribs in the full glass curtain wall has been paid more and more attention by the scholars. However, the calculation of the glass ribs’ stability in the current specification is not involved. To solve this problem, 11 groups of specimens without lateral constraint and 10 groups of specimens with lateral constraint were tested and the effect of the glass rib thickness on the stability was considered. The experiment results show that the lateral torsional buckling always happens under the in-plane load, and the curvature is significantly reduced with the increase of the glass rib thickness. The glass panel provides lateral constraint for the long side of the glass ribs, so the buckling critical load of the glass ribs are doubled.