Seismic performance of RC composite shear walls with different steel embedded layout

Μέγεθος: px

Εμφάνιση ξεκινά από τη σελίδα:

Download "Seismic performance of RC composite shear walls with different steel embedded layout"

Σκύλλα Αγγελοπούλου
7 χρόνια πριν
Προβολές:

1 EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS Vol. 34 Suppl. Aug S DOI /j. eeev S jianghj. 073 RC OpenSees TU TU A Seismic performance of RC composite shear walls with different steel embedded layout JIANG Huanjun 1 2 WANG Bin 2 LU Xilin 1 2 GU Quan 3 1. State Key laboratory of Disaster Reduction in Civil Engineering Tongji University Shanghai China 2. Research Institute of Structural Engineering and Disaster Reduction Tongji University Shanghai China 3. School of Architecture and Civil Engineering Xiamen University Xiamen China Abstract Reinforced concrete RC shear walls located on the bottom zone of the ultra-high-rise buildings are subjected to large axial load shear force and moment and the shear failure or crushing of concrete usually occurs during severe earthquakes. The seismic performance of such structures is improved by steel-concrete composite shear walls generally. Two typical composite shear walls commonly used in practice construction steel plate-reinforced concrete composite shear walls SPRCW and steel concealed truss-reinforced concrete composite shear walls STRCW were studied in the paper. The numerical analytical models were developed to investigate the influence of typical shear walls with different steel layout on hysteretic response carrying capacity and energy dissipation on. The results indicate that SPRCW and STRCW can clearly increase carrying capacity and energy dissipation and reduce the likehood of shear failure model compared to the conventionally RC wall with the same steel ratio. When the steel concentrated in plastic hinge region of shear wall the carrying capacity and energy dissipation of SPRCW are significantly better than STRCW. Key words steel plate-reinforced concrete composite shear walls steel concealed truss-reinforced concrete composite shear walls seismic performance pinch effect OpenSees BAJ13B jhj73@ tongji. edu. cn wangbin@ tongji. edu. cn

2 RC X Kassem OpenSees RC equaldof 12 RC Table 1 1 Analytical parameters ofcomposite shear wall Displacement Based Beam-Column Element Concrete02 Steel02 Quad Element Cyclic soften membrane model Truss Element Steel02 Quad Element J2 Plasticity Material 1. 2

3 JGJ JGJ Fig. 1 1 Numerical model of Composite Shear Walls with Different Shaped-Steel Layout C60 f c = MPa HRB335 f y = 335 MPa Q345 f y = 345 MPa ρ t = 0. 50% ρ l = 0. 67% ρ bl = 6. 33% ρ v = 2. 21% ρ = 5. 20% n = 0. 4 λ = 2 ( ) ( ) ( ) M n = T d - a l + N w - α u = ( 2 ) = kn m P = /2 = kn ( ) 1 V = λ f A w lbh w N u A = + f yv A sk s h w λ f α A α = kn Fig. 2 2 mm Design and Reinforcement details of specimen dimensions in mm 3 4

4 RC Fig. 3 The hysteresis curve of specimen Fig. 4 Shear deformation response of specimen Model-1 5 2% 2 2 Fig. 5 5 Analytical models with different shaped-steel Layout Table 2 2 Web reinforcement parameters of shear wall % % Model Model % Model % 66 Model % Model % 48 2% Model-2 2 mm Model mm 2

5 Model-1 Model-2 Model-3 Model-2 Model-3 Model-4 Model-5 Modle-4 Modle-5 Fig. 6 6 Hysteretic response of different analytical model % Model-1

6 RC 483 Model-2 Model % 22. 7% Model % Model % Model-2 Model Fig. 7 7 Comparison of skeleton curves for different models Fig. 8 8 Comparison of accumulated energy for different models σ x σ y σ c x σ c y x-y τ xy τ c xy ρ x f x ρ y f y Fig. 9 9 Stress state in reinforced concrete element 10 Model-2 Model-4

7 Fig. 10 Shear stress vs. strain curves of different analytical model RC J JIANG Huanjun WANG Bin LU Xilin. Concepts and measures for improving seismic performance of reinforced concrete shear wall J. Journal of Tongji University Natural Science in Chinese 2. J CAO Wanlin ZHANG Jianwei TAO Junping et al. Experimental study on low-rise RC shear wall with concealed truss J. Journal of southeast university Natural Science Edition in Chinese 3. J CAO Wanlin ZHANG Jianwei DONG Hongying et al. Seismic performance of high rise shear wall with concealed truss J. Journal of Journal of Harbin Institute of Technology in Chinese 4. - J SUN Jianchao XU Peifu XIAO Congzhen et al. Experimental study on shear behavior of steel plate-concrete composite wall J. Building

8 RC 485 Structure J LU Xilin GAN Chunjie WANG Wei. Study on seismic behavior of steel plate reinforced concrete shearwalls J. Journal of Building Structures in Chinese 6 Kassem W. Experimental and Theoretical Study of Encased-Plate Composite Structural Walls D. Dundee University of Dundee J CHEN Tao XIAO Congzhen TIAN Chunyu et al. Experimental study of the compression-bending behavior of composite shear walls of high axial compression ratios J. China Civil Engineering Journal in Chinese 8. J JIANG Dongqi XIAO Congzhen CHEN Tao et al. Experimental study of the compression-bending behavior of high-strength concrete steel composite shear walls J. China Civil Engineering Journal in Chinese 9. D ZHANG Wenjiang. Experimental Study and Theoretical Analysis on Seismic Performance of Embedded Steel Plate Composite Shear Wall with Concrete Filled Steel Tubular Column D. Beijing Beijing University of Technology in Chinese 10 Wang B Jiang H J Lu X L. Seismic performance of steel plate-reinforced concrete composite shear wall C / / Proceedings of 15th World Conference on Earthquake Engineering September Lisbon Portugal Paper No OpenSees. Open system for earthquake engineering simulation. http / /opensees. berkeley. edu. 12. C / / WANG Bin JIANGHuanjun LU Xilin. Numerical Simulation of Steel Plate-Reinforced Concrete Composite Shear Wall C / / The 2nd National Conference on Disaster Prevention and Mitigation Engineering Harbin in Chinese 13 JGJ S JGJ Technical Specification for Concrete Structures of Tall Building S. Beijing China Architecture & Building Press in Chinese 14 Oesterle R G Aristizabal-Ochoa J D Fiorato A E et al. Earthquake-Resistant Structural Walls-Tests of Isolated Walls Phase II R. Construction Technology Laboratories Portland Cement Association Lefas I D Kotsovos M D Ambraseys N N. Behavior of reinforced concrete structural walls strength deformation characteristics and failure mechanism J. ACI Structural Journal Sittipunt C Wood S L. Influence of web reinforcement on the cyclic response of structural walls J. ACI Structural Journal Mansour M Hsu T. Behavior of reinforced concrete elements under cyclic shear. I Experiments J. Journal of Structural Engineering Shaingchin S Lukkunaprasit P Wood S L. Influence of diagonal web reinforcement on cyclic behavior of structural walls J. Engineering Structures

Σχετικά έγγραφα

mm CECS159. Vol. 36 No. 8 JOURNAL OF BEIJING UNIVERSITY OF TECHNOLOGY. Aug

mm CECS159. Vol. 36 No. 8 JOURNAL OF BEIJING UNIVERSITY OF TECHNOLOGY. Aug 36 2010 8 8 Vol 36 No 8 JOURNAL OF BEIJING UNIVERSITY OF TECHNOLOGY Aug 2010 1 2 1 1 1 1 1 100124 2 100124 3 1 5 1 /5 230 115 77 2 TU 375 A 0254-0037 2010 08-1059 - 10 1-3 20 70-4-5 6 4 1 2 2 2 1 2 2 3