1. Design of Hybrid Structures All interested are welcome!
土木工程学院结构工程与防灾研究所 Research Institute of Structural Engineering and Disaster Reduction
学 术 讲 座
Design of Hybrid Structures
报告人( Speaker):
Dr. Solomon Tesfamariam, PEng, PhD
Associate Professor, School of Engineering, University of British Columbia, Canada
时间 (Time): 2017年6月28日
地点(Venue): 土木大楼B :30-15:30
主持人( Chair)：戴靠山 副教授
报告简介 (Outline) :
The National Building Code of Canada (NBCC 2010) places strict height limits for a typical stick frame construction (maximum allowed building height limit in BC and QC provinces is 6 storeys). To further increase the building height from mid-rise to high-rise buildings, however, use of mass timber (e.g. cross laminated timber, CLT) and timber-based hybrid buildings is shown to be a viable approach. In the first part of the talk, the current state-of-the-art in timber-based hybrid systems (e.g. timber-steel and timber-concrete) will be presented. Potential use of CLT in retrofitting of seismically deficient structure and new construction will also be highlighted. In collaboration between The University of British Columbia and FPInnovations, an innovative timber-steel hybrid structure is developed, and the details are discussed in the second part of the talk. The hybrid structure incorporates steel moment resisting frames (SMRFs) with CLT-infill shear panels. For the proposed hybrid system, details of experimental connection test between CLT panels and SMRFs and analytical models developed will be discussed. With the use of the two systems, the building code specified the use of conservative overstrength and ductility factors. As the building code lacks the design guideline of hybrid systems, for force-based design, the talk will highlight derivation of overstrength and ductility factors following FEMA P695. The third part of the talk will highlight development and validation of an iterative direct displacement based design (DDBD) guideline for the hybrid systems. For the DDBD, equivalent viscous damping model were developed analytically. Finally, this presentation will highlight effectiveness of the proposed hybrid building and improvement in seismic resistance..
报告人简介 (About the Speaker) :
Dr. Solomon Tesfamariam, PEng, PhD received his B.Sc., M.A.Sc., and Ph.D. in Civil Engineering from Ryerson University, University of Toronto and Ottawa University, respectively. Prior to joining UBC, he has worked for over seven years at the National Research Council Canada on developing different decision support tools for infrastructure management, and analytical and numerical based modelling of pipe failures. At UBC, his research interests lie primarily in the protection of civil infrastructure and structural systems from multiple hazards (earthquake, fire, ageing/deterioration, climate change, etc.). His research philosophy is working on integrated risk analysis and management for civil infrastructure systems. His Civil Infrastructure Management Research Group (CIM-RG), at UBC, is working with various government agencies, municipalities and consultants to develop robust, risk-based decision making tools to manage aging assets. Over the last six years, funded through NSERC and Forestry Innovation Investment, he has been leading a group on developing different timber-based hybrid structures.
欢迎教师和学生参加！
All interested are welcome!