Effects of Dual-Core Self-Centering Braces and Sandwiched Buckling-Restrained Braces on Seismic Behaviors of Steel Frames:Tests and Nonlinear Time History Analyses
Date Issued
2015
Date
2015
Author(s)
Hsiao, Chia-Hung
Abstract
Dual-Core Self-Centering Brace (DC-SCB) uses tendons to constrain steel compression members and end plates of the brace,on the same time,it provides self-centering properties under brace in tension and compression that is stored to zero residual deformation.Under same strain of tendons,dual-core SCB has two times brace deformation capacity than conventional single-core SCB (or reduce to half the additional strain of tendons under same brace deformation capacity),that effectively reduce the elastic strain demand of tendons.Sandwiched Buckling-Restrianed Brace (SBRB) uses two identical restraining members that sandwich the Energy-Dissipative core with fully tensioned high-strength bolts to prevent core buckling and have stable hysteretic response.This research is based on Chou and Chen,2015 two story Dual-Core Self-Centering Brace Frame (DC-SCBF),change Dual-Core Self-Centering Brace (DC-SCB) in second floor into Sandwiched Buckling-Restrianed Brace (SBRB) that as known as Special Mixed Brace Frame (SMBF).Do seismic tests and time history tests then compare the result with Dual-Core Self-Centering Brace Frame (DC-SCBF) and Sandwiched Buckling-Restrianed Brace Frame (SBRBF).The objective of research is about two different stiffness braces use in a building,what kind of influence will happened to this building? compare the result with Dual-Core Self-Centering Brace Frame (DC-SCBF) and Sandwiched Buckling-Restrianed Brace Frame (SBRBF).The test results shows three braced frames have good seismic behavior,braces do not destroy and show good seismic behavior,too.This work study also uses the Platform of Inelastic Structural Analysis for 3D System software (PISA3D) to analyze the test of three frames and also compare with the test results and predictions which are proved similar.The analysis results shows three frames can use PISA3D software to do parametic study and design.
Subjects
Dual-Core Self-Centering Brace (DC-SCB)
Sandwiched Buckling-Restrianed Brace (SBRB)
Dual-Core Self-Centering Brace Frame (DC-SCBF)
Special Mixed Brace Frame (SMBF)
Sandwiched Buckling-Restrianed Brace Frame (SBRBF)
Type
thesis
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