Experimental validation of RC shear wall structures with hybrid coupling beams

2018 ◽  
Vol 111 ◽  
pp. 14-30 ◽  
Author(s):  
Tao Wang ◽  
Qingxue Shang ◽  
Xiaoting Wang ◽  
Jichao Li ◽  
Zi’ang Kong
Keyword(s):  
Experimental Validation ◽  
Shear Wall ◽  
Coupling Beams ◽  
Hybrid Coupling ◽  
Wall Structures ◽  
Rc Shear Wall

Finite Element Simulation of RC Shear Wall Components

2012 ◽  
Vol 170-173 ◽  
pp. 3594-3597
Author(s):  
Hai Tao Wan ◽  
Peng Li
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Shear Wall ◽  
Lateral Force ◽  
Skeleton Curve ◽  
Structure Damage ◽  
Wall Structures ◽  
Element Simulation ◽  
Rc Shear Wall ◽  
Wall Components

Reinforced concrete (RC) shear wall component is a very important lateral force-resisting member which is widely used in China. Its seismic behavior has a great impact on the seismic performance of the overall structure. Damage of some RC shear wall structures under the earthquake is caused by the damage of shear wall components, So shear wall components are an essential seismic members. However, the test datum are not enough to study the performance of RC shear wall components, Therefore, Finite element simulation of RC shear wall components is performed by software ABAQUS in the paper. Through comparing with the finite element simulation and the test of load - displacement skeleton curve, failure mode and steel bar strain, the result shows that the finite element simulation can more accurately simulate the situation of the test, verifying the finite element simulation is the most important research tool besides test.

scholarly journals Modal-Based Ground Motion Selection Method for the Nonlinear Response Time History Analysis of Reinforced Concrete Shear Wall Structures

2021 ◽  
Vol 11 (17) ◽  
pp. 8230
Author(s):  
Yang Liu
Keyword(s):  
Seismic Response ◽  
Ground Motion ◽  
Nonlinear Response ◽  
Time History ◽  
Shear Wall ◽  
Seismic Demands ◽  
Ground Motion Selection ◽  
Wall Structures ◽  
History Analysis ◽  
Rc Shear Wall

This paper presents a modification of the modal-based ground motion selection (MGMS) method for improving the reliability of the nonlinear response time history analysis (NLRHA) of reinforced concrete (RC) shear wall structures. The original MGMS procedure quantified the impact of frequency content combinations in the time domain (FCCTD) of input ground motions (IGMs) on the seismic response of building structures using the level of interaction of the first three modes induced by IGMs. However, previous research found that the first two modes have far larger modal mass coefficients than those of higher modes and dominate the vibration of the RC shear wall structures with a symmetric plan. Therefore, the MGMS procedure should be modified by employing the interaction of the first two modes induced by IGMs to properly account for the effect of the FCCTD of IGMs on the seismic response of structures. In the MGMS procedure for RC shear wall structures, seven IGMs that caused the most significant interactions of the first two modes were selected from a suite of twenty seed IGMs, which were chosen with a conventional spectra-matching-based IGMs selection procedure for the NLRHA of the structure. A comprehensive case study involving three RC shear walls with different heights was conducted to investigate the capability of the MGMS in selecting suitable IGMs for the NLRHA of RC shear wall structures. Sets of seed IGMs were selected, adopting conditional mean spectra and design spectra as the target spectra. It was found that the seismic demands computed using MGMS selected IGMs can ensure a more reliable and reasonable computation of seismic demands compared with conventional spectra-matching-based IGMs selection methods.

Experimental Study on Replaceable Hybrid Coupling Beams

2012 ◽  
Vol 166-169 ◽  
pp. 1779-1784 ◽  
Author(s):  
Tao Wang ◽  
Xun Guo ◽  
Xiongke He ◽  
Chengshou Duan ◽  
Yufeng Du
Keyword(s):  
Wall Structure ◽  
Rc Beam ◽  
Coupling Beam ◽  
Coupling Beams ◽  
Hybrid Coupling ◽  
Hybrid Beam ◽  
Entire Structure ◽  
In Series ◽  
Rc Shear Wall ◽  
Metallic Damper

A hybrid coupling beam is developed in this study to render the reinforced concrete (RC) shear wall structure a higher seismic performance. As the first protection from earthquake, the coupling beam is able to dissipate more energy when combined in series with a metallic damper. The strength of the metallic damper is carefully selected so that the RC part of the coupling beam remains elastic, while all plasticity goes into the metallic damper. This mechanism protects the RC part from seismic damage. And the metallic damper can be quickly replaced once it is damaged. This significantly enhances the reparability of entire structure, making it possible to be immediately functioned after earthquakes. The stiffness of the hybrid coupling beam is similar as the traditional RC coupling beam, so that the dynamic characteristics are almost unchanged. In this study, one hybrid coupling beam and one traditional RC beam are experimentally examined. The seismic dissipation capability of the hybrid beam is approximately twice of the traditional beam, and the damage of the RC part of the hybrid beam is very limited.

Experimental validation on seismic performance of a monolithic precast RC shear wall structure with novel connections

2022 ◽  
pp. 136943322110606
Author(s):  
Xiao-ting Wang ◽  
Xi Chen ◽  
Tao Wang ◽  
Peng Pan ◽  
Qi-song Miao
Keyword(s):  
Shear Failure ◽  
Precast Concrete ◽  
Welding Process ◽  
Shear Wall ◽  
Wall Structure ◽  
Coupling Beams ◽  
System A ◽  
Concrete Joints ◽  
Strength And Stiffness ◽  
Rc Shear Wall

A novel monolithic precast concrete shear wall structure system was proposed, with four connector types: “cast-in-site elbow reinforced concrete joints,” “dry connectors,” “shaped steel shear keys,” and “shaped steel boundary elements” based on welding process with stable and high quality. The first two connect walls horizontally and the other two connect walls between adjacent stories. A high precast ratio, over 60%, can be achieved. To evaluate the strength, stiffness, ductility, and energy dissipation capacity of the proposed system, a full-scale three-story model was tested quasi-statically in the two horizontal directions. The model showed strong spatial response, demonstrating sufficient strength and stiffness to resist severe earthquakes. The coupling beams suffered shear failure damage. The connectors sustained large internal forces, surviving under simulated severe earthquake conditions. The external thermal insulation layers remained firmly attached to the precast wall panels, satisfying the design objectives.

Sign in / Sign up

Export Citation Format

Share Document