Summer Research Projects 2014
Yuanjie LiMASc | The University of British Columbia, CanadaSupervised by Tony Yang, Ph.D.
The 5th Tongji-UBC Symposium on Earthquake Engineering Facing Earthquake Challenges Together May 4-8 2015, Tongji University, Shanghai, China
Performance Assessment of Buckling Restrained Knee Braced Truss Moment Frame (BRKBTMF) System2
Resilient long-span seismic systemLong-span truss
Buckling restrained brace (BRB)
Introduction3Buckling restrained knee braced truss moment frame (BRKBTMF)
Univ. of MichiganIIT, KanpurKing Mongkuts Univ. of Tech.
4Performance-based plastic design procedure
Design procedure5Seismic performance evaluation
Plan view30 ft.45 ft.60 ft.Prototype building6
30 ft.45 ft.60 ft.BRKBTMFMoment frame (MF)Prototype building7BRKBTMFMFSeismic performance evaluationInitial cost comparison8
(a) Target spectra for three hazard(b) Ground motions scaling for 2%/50 years
ExperimentalSimulation (c) Normalized BRB stress-strain response
(d) Moment-rotation responseExperimentalSimulation Seismic performance evaluationGround motion and experimental calibration9
Element removal procedure10
Seismic performance evaluationDynamic performance study11
Median inter-story drift responseDynamic performance study12Median floor acceleration response
Dynamic performance study13
Structural Comp.ContentsArchitect. Comp.Building ServicesOccupantsSeismic performance evaluationEarthquake financial impact study14
Building performance groups15Component fragility data
16Cumulative distribution function
17ConclusionBuckling Restrained Knee Brace Truss Moment Frame (BRKBTMF): Lower initial cost: Not significantly affected by the architecture layout.Higher structural performance: Lower structural demand (floor acceleration and ISD).Lower repair cost and downtime. 18Future researchAcknowledgement to:Tony Yang (University of British Columbia),Subhash C. Goel (University of Michigan), S. Leelataviwat (King Mongkuts University of Technology).
Test setupSpecimen drawingThank you!19
Certificate of Structural Engineering Program
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