悬索屋盖的模糊随机地震反应

Fuzzy Random Seismic Responses of a Prestressed Dual-Cable Roof Structure

本文在既考虑了地面运动的随机性,又考虑地基土性质及地震烈度模糊性的基础上,对悬索屋盖的地震反应进行了研究。利用吉林滑冰馆(屋盏为60m×90m 的预应力双层索系)的地基土勘测资料和给定的未来地震烈度上下限计算了屋盖的模糊随机地震反应。这一研究说明模糊随机振动理论用于地震反应分析不仅更为合理而且是简便易行的。

With consideration of the randomness of ground motion and the fuzziness of subsoil and earthpuake intensity,this paper investigates seismic responses of large span struetures.The roof of Ji Lin Skating-Rink,(a prestressed dual-cable system, 60m×90m),located in the northeast of China,is taken as an example to analyse its fuzzy random responses under strong earthquakes.It is indicated that the proposed method to analyse fuzzy random seismic responses of complex structures is not only rational but also simple and practical in engineering.