摘要
提出巨子式新型结构在抵抗风荷载作用时存在2种承载方案:①风力仅由巨结构承担;②由巨-子结构共同承担。对比研究了脉动风作用时2种承载方案下的新型结构的动力响应谱。研究了不同承载(风载)方案时,子结构刚度对新型结构动力响应的影响规律,并分析了2种承载方案下新型结构动态特性上的异同点。研究结果表明:巨子式新型结构采用巨-子结构共同承担风载方案时,比单纯依靠巨结构承受风载具有更好的控制效果;2种承载方案下,子结构刚度对巨子式新型结构动态特性影响规律一致。
Aim. Two schemes we compare are. scheme A, only mega-structure resists pulsating wind loading; scheme B, both mega and sub structures resist it. To our knowledge, there is no paper in the open literature that considers scheme B. In the full paper, we explain in some detail our comparison and the analysis of a numerical example; in this abstract, we just add some pertinent remarks to listing the three topics of explanation. The first topic is.. dynamical equations. In the first topic, our small contribution is eqs. （3） through （6） in the full paper. The second topic is： the method of dynamical analysis. The third topic is. the analysis of a numerical example. In the third topic, we present our calculation results in Figs. 3 and 4 in the full paper. The analysis of Figs. 3 and 4 shows preliminarily that scheme B is better than scheme A in that both lateral displacement and acceleration responses are considerably less. The analysis of Fig. 4 shows that the effect of sub-structural stiffness on dynamical performance of mega-sub structure designed by scheme A is about the same as that designed by scheme B.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2008年第1期132-135,共4页
Journal of Northwestern Polytechnical University
