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原文传递 Experimental and Numerical Investigations of Composite Frames with Innovative Composite Transfer Beams

题名：	Experimental and Numerical Investigations of Composite Frames with Innovative Composite Transfer Beams
正文语种：	英文
作者：	Jian-Guo Nie; Wen-Hao Pan;Mu-Xuan Tao;Yu-Zhi Zhu
作者单位：	Tsinghua Univ
关键词：	Composite transfer beam; Composite transfer frame; Steel-concrete composite structure; Seismic performance; Failure mechanism; Experimental study; Multiscale modeling; Fiber beam-column model; Metal and composite structures.
摘要：	Experime ntal and numerical studies were con ducted to investigate the vertical load-carrying behavior and seismic performance of a composite frame structure with an innovative composite transfer beam, which was proposed to overcome the disadvantages of traditional reinforced concrete or steel reinforced concrete transfer beams. In the experimental study, a vertical monotonic loading test and a lateral cyclic loading test were con ducted. The test observations, load-displacement curves, and strain measurements were discussed to investigate the structural performance and failure mechanism. The experimental results demonstrated the excellent vertical load-carrying behavior and seismic performanee of the composite transfer frame. The characteristics of the plastic hinge distribution were investigated based on extensive data of the steel strai ns measured to reveal the typical failure mechanism of the composite transfer frame. In the numerical simulation analysis, a multiscale modeling scheme was developed to make full use of the fiber beam-column elements and multilayer shell elements. Comparisons with the experimental results showed that the developed model predicted the overall structural behavior, the in dividual story and compone nt behavior, and the failure mecha nism with a reas on able level of accuracy. In addition, both the experimental tests and numerical analyses indicated that the shear deformation mode and the energy dissipation in the composite joint core were also significant mechanical characteristics of the composite transfer frame. DOI: 10.1061/(ASCE)ST. 1943-541X.0001776. © 2017 American Society of Civil Engineers.
出版日期：	2017.07
出版年：	2017
期刊名称：	Journal of Structural Engineering
卷：	Vol.143
期：	NO.07
页码：	04017041