Seismic behavior of coupled shear wall structures with various concrete and steel coupling beams

Summary A novel 2-level yielding steel coupling beam (TYSCB) has been developed to enhance the seismic performance of coupled shear wall systems. The TYSCB consists of a shear-yielding beam designed to yield first under minor earthquakes and a bend-yielding beam designed to yield under severe earthquakes. A comparison of seismic behavior of 4 20-storey coupled shear wall structures with reinforced concrete coupling beams, complete steel coupling beams, fuse steel coupling beams, and TYSCB is presented. The dimensions and force-displacement curves of these coupling beams are first designed. Nonlinear dynamic analyses on these structures are carried out under minor and severe earthquakes. The seismic behavior of these models is studied by comparing their storey shear forces, storey drift ratios and ductility demands. The results show that the base shear and storey drift of the structure with TYSCB under both minor and severe earthquakes are less than those of structures with concrete coupling beams and complete steel coupling beams. Furthermore, the ductility demand of coupled shear walls with TYSCB subjected to severe earthquakes can be greatly released compared with those using fuse steel coupling beams. This indicates that the proposed TYSCB has a better balance between ductility demand and energy dissipation, compared to traditional steel coupling beams.

[2]  John W. Wallace,et al.  Behavior, design, and modeling of structural walls and coupling beams — Lessons from recent laboratory tests and earthquakes , 2012, International Journal of Concrete Structures and Materials.

[3]  Songye Zhu,et al.  Seismic behaviour of self‐centring braced frame buildings with reusable hysteretic damping brace , 2007 .

[4]  Hadi Moghadasi Faridani,et al.  Investigation of the effects of viscous damping mechanisms on structural characteristics in coupled shear walls , 2016 .

[5]  Jinkoo Kim,et al.  Simple design procedure of a friction damper for reducing seismic responses of a single-story structure , 2010 .

[6]  Kent A. Harries,et al.  Nonlinear seismic response predictions of walls coupled with steel and concrete beams , 1998 .

[7]  John W. Wallace,et al.  Modelling issues for tall reinforced concrete core wall buildings , 2007 .

[8]  Ayhan Nuhoglu,et al.  AN APPROXIMATE METHOD FOR STATIC AND DYNAMIC ANALYSES OF MULTI-BAY COUPLED SHEAR WALLS , 2009 .

[9]  Filip C. Filippou,et al.  Evaluation of Nonlinear Frame Finite-Element Models , 1997 .

[10]  G. Parra-Montesinos,et al.  Seismic Behavior and Detailing of High-Performance Fiber-Reinforced Concrete Coupling Beams and Coupled Wall Systems , 2013 .

[11]  Dong-Kwan Kim.  Seismic Response Analysis of Reinforced Concrete Wall Structure Using Macro Model , 2016 .

[12]  Kent A. Harries,et al.  Seismic design of coupled walls - a case for mixed construction , 1997 .

[13]  Bahram M. Shahrooz,et al.  Seismic Design of Hybrid Coupled Wall Systems: State of the Art , 2010 .

[14]  Experimental studies of new ductile coupling beams and multi-storey shear walls , 1997 .

[15]  Bahram M. Shahrooz,et al.  Behavior and Design of Reinforced Concrete, Steel, and Steel-Concrete Coupling Beams , 2000 .

[16]  John B. Mander,et al.  Observed Stress‐Strain Behavior of Confined Concrete , 1988 .

[17]  Antonio Capsoni,et al.  Novel continuum models for coupled shear wall analysis , 2016 .

[18]  Michael Montgomery,et al.  Viscoelastic coupling dampers (VCDs) for enhanced wind and seismic performance of high‐rise buildings , 2013 .

[19]  Kent A. Harries,et al.  Ductility and Deformability of Coupling Beams in Reinforced Concrete Coupled Walls , 2001 .

[20]  Kent A. Harries,et al.  Performance-based design of high-rise coupled wall systems , 2006 .

[21]  Jinkoo Kim,et al.  Seismic design of low-rise steel frames with buckling-restrained braces , 2004 .

[22]  Zhifeng Liu,et al.  Performance based robust design optimization of steel moment resisting frames , 2013 .

[23]  Filip C. Filippou,et al.  Simulation of the shaking table test of a seven‐story shear wall building , 2009 .

[24]  Gholamreza Abdollahzadeh,et al.  Response modification factor of dual moment-resistant frame with buckling restrained brace (BRB) , 2013 .

[25]  Bahram M. Shahrooz,et al.  Steel-concrete composite coupling beams — behavior and design , 2001 .

[26]  Sherif El-Tawil,et al.  Seismic Behavior of a Coupled Wall System with HPFRC Materials in Critical Regions , 2011 .

[27]  Sung-Kyung Lee,et al.  Seismic performance of friction dampers using flexure of rc shear wall system , 2009 .