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原文传递 Seismic Performance of Timber–Steel Hybrid Structures. II: Calibration of Performance Objectives and Design Method

题名：	Seismic Performance of Timber–Steel Hybrid Structures. II: Calibration of Performance Objectives and Design Method
正文语种：	英文
作者：	Zheng Li, M.ASCE1; Xijun Wang2; Minjuan He, M.ASCE3; Hanlin Dong4
作者单位：	1Associate Professor, Dept. of Structural Engineering, Tongji Univ.,1239 Siping Rd., Shanghai 200092, China. 2Doctoral Candidate, Dept. of Structural Engineering, Tongji Univ.,1239 Siping Rd., Shanghai 200092, China. 3Professor, Dept. of Structural Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, China (corresponding author). 4Doctoral Candidate, Dept. of Structural Engineering, Tongji Univ.,1239 Siping Rd., Shanghai 200092, China.
关键词：	Timber hybrid structure; Performance objectives; Incremental dynamic analysis; Equivalent viscous damping; Design procedure
摘要：	This paper presents the calibration of performance objectives and the development of a performance-based design method for timber–steel hybrid structures that consist of a steel moment-resisting frame and prefabricated infill light frame wood shear walls. Interstory drift was adopted as the indicator of structural or nonstructural damage. One hundred twenty single-story, single-bay timber–steel hybrid lateral load-resisting subassemblies with different configurations were modeled. The interstory drift limit for the immediate occupancy (IO) performance level was determined based on the numerical results from monotonic loading simulations, and the interstory drift limit for the collapse prevention (CP) performance level was obtained through incremental dynamic analysis (IDA). To consider the energy dissipation capability during earthquakes, semistatic cyclic analysis was conducted to study the hysteretic performance and damping effect of the timber–steel hybrid structures, and an expression is proposed to determine the equivalent viscous damping of such a structural system. A direct displacement-based design procedure was developed and a design example of a timber–steel hybrid structure was used to demonstrate the design procedure. This paper bridges the gap between a series of experimental and theoretical investigations and the engineering application of the innovative timber hybrid structural system.
出版年：	2019
期刊名称：	Journal of Structural Engineering
卷：	145
期：	10
页码：	1-13