Seismic performance of steel plate shear walls structures

2011 ◽  
Vol 6 (1) ◽  
pp. 47-58 ◽  
Author(s):  
Calin Neagu ◽  
Florea Dinu ◽  
Dan Dubina
Keyword(s):  
Seismic Performance ◽  
Steel Plate ◽  
Shear Walls ◽  
Steel Plate Shear Walls

Seismic Performance of Existing R/C Frames Strengthened by Steel Plate Shear Walls

2012 ◽  
Vol 193-194 ◽  
pp. 1470-1475 ◽  
Author(s):  
Marco Valente
Keyword(s):  
Energy Dissipation ◽  
Seismic Performance ◽  
Structural Damage ◽  
Steel Plate ◽  
Shear Walls ◽  
Steel Plates ◽  
Seismic Retrofitting ◽  
Steel Plate Shear Walls ◽  
Steel Panel ◽  
Steel Panels

This study investigates an innovative method based on low yield steel plate shear walls for seismic retrofitting of existing reinforced concrete (R/C) structures. A simplified numerical model of steel shear panels is developed for global analyses of multi-story R/C frames. The seismic performance of a non-ductile five-story R/C frame retrofitted with steel plate shear walls is evaluated in terms of drift control and energy dissipation capacity using nonlinear dynamic analyses. The results obtained by the application of two different story-wise distributions of steel plates are compared. In case of retrofitted frames a considerable decrease of the maximum top displacements is registered and the energy dissipated by the primary structural elements is significantly reduced for severe seismic actions. The energy dissipation concentrates in the steel panels, reducing the plastic demand on the structural members, along with the potential for structural damage. The different story-wise distributions of the steel panels change the damage distribution throughout the frame. The uniform arrangement of the steel panel thickness along the height of the frame causes a concentration of damage in the columns of the first story. In case of steel panel distribution proportional to story shear, the energy dissipation results more uniform over the height of the frame and a significant decrease of damage is registered for the columns of all the storeys.

scholarly journals Seismic performance of self-centering steel plate shear walls with beam-only-connected web plates

2015 ◽  
Vol 106 ◽  
pp. 198-208 ◽  
Author(s):  
Patricia M. Clayton ◽  
Jeffrey W. Berman ◽  
Laura N. Lowes
Keyword(s):  
Seismic Performance ◽  
Steel Plate ◽  
Shear Walls ◽  
Steel Plate Shear Walls ◽  
Web Plates

scholarly journals Seismic Performance of CFST Frame-Steel Plate Shear Walls Connected to Beams Only

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Qin Rong ◽  
Zhonghui Zhao ◽  
Lanhui Guo ◽  
Xiaomeng Hou ◽  
Li Lin ◽  
...  
Keyword(s):  
Finite Element ◽  
Seismic Performance ◽  
Composite Structures ◽  
Steel Plate ◽  
Seismic Analysis ◽  
Shear Walls ◽  
Element Analysis ◽  
Seismic Region ◽  
Steel Plate Shear Walls ◽  
Finite Element Software

The safety and cost of structures composed of concrete-filled steel tube (CFST) frame-steel plate shear walls (SPSWs) with two-side connections are governed by the seismic performance. The response modification factor R and displacement amplification factor Cd are important seismic performance factors. In this paper, nonlinear seismic responses of 10-story, 15-story, and 20-story CFST frame-SPSWs (CFST-SPSWs) are studied. A nonlinear finite element model which includes both material and geometric nonlinearities is developed using the finite element software OpenSees for this study. The accuracy of model was validated by comparing with experimental results. Nonlinear seismic analysis shows that CFST-SPSWs, in high seismic region, behave in a stable and ductile manner. Also, R and Cd of CFST-SPSWs were evaluated for the structure models using incremental dynamic analysis (IDA), and the average values of 3.17 and 3.05 are recommended, respectively. The recommended R value is greater than the value (2.8) in the “Chinese Code for seismic design of buildings” for composite structures, indicating the code is conservative. The structural periods provided by current code are generally lower than the periods calculated by finite element analysis. Research results show that R and Cd increase with increasing story number, span number, and structural period. Ductility reduction factor Rμ increases with increasing span number and decreasing story number. Overstrength factor Rs increases with increasing story number and decreasing span number.

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