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引用次数: 0
摘要
本文介绍了一种具有自聚能的新型低损坏混合钢木摇动支撑框架,并在加拿大设计标准框架内提出了一种设计方法。该系统由重力承重木框架和作为侧向承重系统的钢同心支撑框架组成,两者采用 U 型钢引信连接。抗侧荷载系统中的后张力钢绞线和摇动基座实现了自集中能力。首先介绍了该系统及其组成部分。然后介绍了拟议的设计方法和系统性能目标。考虑到抗侧力和重力荷载系统之间的相互作用,通过数值分析验证了系统的抗震性能和建议的设计程序。动态分析结果证实了所提出的混合系统的抗震性能得到了增强,地震后几乎没有残余变形。此外,所提出的设计准则能够准确预测系统的地震响应和对构件的要求。
A new hybrid steel–timber rocking seismic force resisting system equipped with U-shaped fuse connections
This paper introduces a new low-damage hybrid steel–timber rocking braced frame with self-centring capability and proposes a design methodology in the framework of Canadian design standards. This system consists of a gravity load-resisting timber frame and a steel concentrically braced frame acting as the lateral load-resisting system that is connected using U-shaped steel fuses. The self-centring capability is achieved by post-tensioning strands and rocking bases within the lateral load-resisting system. The system, along with its components, is first introduced. The proposed design method and system performance objectives are then presented. The seismic performance of the system and the proposed design procedure are validated through numerical analyses considering the interaction between the lateral and gravity load-resisting systems. The results of dynamic analyses confirm the enhanced seismic performance of the proposed hybrid system with almost no residual deformations after the earthquake. Moreover, the proposed design guidelines can accurately predict the system’s seismic response and demands imposed on the members.
期刊介绍:
The Canadian Journal of Civil Engineering is the official journal of the Canadian Society for Civil Engineering. It contains articles on environmental engineering, hydrotechnical engineering, structural engineering, construction engineering, engineering mechanics, engineering materials, and history of civil engineering. Contributors include recognized researchers and practitioners in industry, government, and academia. New developments in engineering design and construction are also featured.