金属波纹拱支座刚度对其稳定承载力的影响  

Effect of Corrugated-arch Metal Support Abutment Stiffness on Its Stable Bearing Capacity

作　　者：陕亮[1] 蒋沧如[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430070

出　　处：《江汉石油学院学报》2002年第2期109-110,共2页Journal of Jianghan Petroleum Institute

摘　　要：金属拱型波纹屋顶结构属于冷弯薄壁构件 ,稳定问题是影响其承载能力的关键因素。以W6 6 6金属拱型波纹屋顶为研究对象 ,利用简化的计算模型 ,对 18m和 30m跨波纹拱 ,分别利用有限元分析程序SAP93进行计算 ,研究了波纹拱在不同跨度、不同支座形式下 ,不同外荷载对该结构受力性能及稳定承载力的影响。结果表明 ,相同状态下的结构稳定承载力 ,30m跨的低于 18m跨的 ;支座形式对结构的稳定承载力影响很大 ,为保证结构安全可靠 ,在实际工程中应尽量采用固支或接近于固支的支座形式 ;Arched-corrugated metal roof( ACMR) belongs to cold-bending thin wall steel structure, of which the stability is a key factor influencing its bearing capacity. By taking W666 ACMR as an object of study, through a simplified calculating model, finite element analytical model SAP93 is used to calculate the 18m span and 30m span corrugated arches, the effect of the corrugated arches with different spans, different support abutments ,different external loads on its structural bearing capacity and its stability is studied. The results show that under different load conditions, the stable structural bearing capacity on 30m span is less than that of 18m span; the style of support abutment influences greatly on the stable structural bearing capacity. To ensure the structural stability, fixed support abutment of the one approaching fixed support would be used in construction as much as possible, the stable structural bearing capacity of the arch under semi-span is less than that of the one under full-span.

关 键 词：金属波纹拱 支座刚度 承载力 影响 屋顶 金属拱型波纹屋顶 

分 类 号：TU392.1[建筑科学—结构工程]