A Study of Seismic Performance and Numerical Modeling for Steel Plate Shear Wall Frames
Date Issued
2015
Date
2015
Author(s)
Tsai, Ching-Yi
Abstract
The Self-centering Steel Plate Shear Wall (SC-SPSW) lateral load resisting system has been developed to provide enhanced seismic performance, including system re-centering in design-level earthquakes. SC-SPSWs utilize post-tensioned (PT) beam-to-column connections to provide frame re-centering under an earthquake excitation. The research aims to develop new, high-performance steel plate shear wall systems and fill the critical knowledge gaps in the understanding steel plate shear wall behavior. The main objective of this research is to advance the technology of utilizing steel plate shear walls (SPSWs) combined with self-centering system on the seismic performance improvement of buildings. The first task of this study is to construct and validate a finite element shell model of SC-SPSW. This paper presents the numerical models using ABAQUS and compare the analytical results with the full-scale SC-SPSW specimen which was tested in NCREE. The column sizes of this specimen was large and overly conservative because it was designed with no boundary frame yielding occurred under the maximum considered earthquake. In this study, these design criteria are modified from 4% or 5% to 3% target drift ratios for the boundary frame. The OpenSees models were constructed, analyzed and validated with the ABAQUS analytical results. The OpenSees nonlinear response history analysis results of the prototype SC-SPSWs show that the proposed design procedure is capable of achieving the intended performance objectives at the median level. Under the maximum considered earthquakes, the medians of the maximum inter-story and roof residual drift ratios are 2.8% ratio and 0.087%, respectively. The second task of this study is to develop and validate the ABAQUS model using shell elements for SPSW and beam-column line elements for a full-scale reinforced concrete frame (SPSW-RCF) specimen tested in NCREE. The PQ-Fiber materials introduced into the SPSW-RCF model with the line element for RC boundary frame have a very good agreement with the test results. It is confirmed that using the line elements for the RC frame instead of using solid elements is an effective and practical approach.
Subjects
self-centering system
residual deformation
steel plate shear wall
post-tensioned
seismic design
nonlinear response history analysis
Type
thesis
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