桅杆结构的内共振对其动力稳定性的影响  

EFFECT OF INTERNAL RESONANCE OF MAST STRUCTURE ON ITS DYNAMIC STABILITY

作　　者：何艳丽[1] 王增春[1] 董石麟[1] 王肇民[2] 

机构地区：[1]上海交通大学,上海200030 [2]同济大学,上海200092

出　　处：《钢结构》2001年第3期38-42,共5页Steel Construction

基　　金：国家自然科学基金资助项目(编号:59778030)

摘　　要：根据推导的任意动力荷载作用下的弹性结构体系的动力稳定性判别准则，对一存在内共振的桅杆结构进行了算例分析，从对实际桅杆结构的动力稳定性分析中可以得知，桅杆结构的内共振是导致其动力失稳的主要因素之一。An analysis of calculation example of a mast structure with internal resonance is conducted according to the derived criterion of the dynamic stability of an elastic structural system under random dynamic loads. It is known from the dynamic stability analysis of a real mast structure that this internal resonance of the mast structure is one of the major factors leading to its dynamic instability.

关 键 词：桅杆结构 内共振 动力稳定性 弹性结构 风载荷 

分 类 号：TU347[建筑科学—结构工程]