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.

Study on the shear wall structure with combined form of replaceable devices

2017 ◽  
Vol 21 (9) ◽  
pp. 1327-1348
Author(s):  
Cong Chen ◽  
Renjie Xiao ◽  
Xilin Lu ◽  
Yun Chen
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Performance Comparison ◽  
Wall Structure ◽  
Structural Part ◽  
Coupled Shear Wall ◽  
Wall Structures ◽  
Strength And Stiffness ◽  
Energy Dissipated ◽  
Resilient Structure

Structure with replaceable devices is a type of earthquake resilient structure developed to restore the structure immediately after strong earthquakes. Current researches focus on one type of the replaceable device located in the structural part that is most likely to be damaged; however, plastic deformation would not be limited in a specific part but expand to other parts. To concentrate possible damage in shear wall structures, combined form of replaceable devices was introduced in this article. Based on previous studies, combined form of replaceable coupling beam and replaceable wall foot was used in a coupled shear wall. Influences of the dimension and location of the replaceable devices to the strength and stiffness of the shear wall were investigated through numerical modeling, which was verified by experimental data. Performance comparison between the shear walls with one type and combined form of replaceable devices and the conventional coupled shear wall was performed. In general, the shear wall with combined form of replaceable devices is shown to be better energy dissipated, and proper dimensions and locations of the replaceable devices should be determined.

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

Seismic Reinforcement Application of Buckling-Restrained Braces in the Bottom Frame-Shear Wall Structure

2014 ◽  
Vol 919-921 ◽  
pp. 1012-1015
Author(s):  
Pei Song Liu ◽  
Liang Bai
Keyword(s):  
Bottom Layer ◽  
Shear Wall ◽  
Wall Structure ◽  
Reinforced Concrete Frame ◽  
Reinforcement Scheme ◽  
Vertical Stiffness ◽  
Concrete Frame ◽  
Deformation Ability ◽  
Rc Shear Wall ◽  
Bottom Frame

Bottom frame-shear wall structure is a kind of special structure, due to the inharmonious relationship between the frame and masonry walls in bearing lateral capacity and deformation ability, the difference of vertical stiffness in the bottom frame-shear wall structure is bigger, so the structural seismic performance is poor. A six layer bottom frame-shear wall structure seismic strengthening project is established in order to contrastive analyze two kinds of reinforcement scheme, which are additional RC shear wall and additional buckling constraints. Calculation and analysis results show that through setting buckling constraint support in the bottom layer of reinforced concrete frame and selecting rational mechanical parameters, can increase lateral stiffness, reduce the lateral deformation and realize the effect of multichannel fortification. At the same time, the advantage of easy to implement is belong to bottom frame-shear wall structure.

Experimental Study on Behavior of Shear Walls Built with Precast Two-way Hollow Slabs for Different Axial-Load Ratios

2013 ◽  
Vol 351-352 ◽  
pp. 833-837
Author(s):  
Ji Liang Liu ◽  
Hui Chen Cui ◽  
Ming Jin Chu ◽  
Jian Qun Hou
Keyword(s):  
Shear Failure ◽  
Precast Concrete ◽  
Failure Process ◽  
Compressive Load ◽  
Shear Walls ◽  
Shear Wall ◽  
Shear Capacity ◽  
Lateral Loads ◽  
Compression Load ◽  
New Type

The shear wall built with precast two-way hollow slab is an innovated precast concrete shear wall suitable for housing industrialization. Two shear walls built with precast two-way hollow slabs were tested pseudo-statically under low cyclic lateral loads to acquire their failure process and modes. The effect of the axial compression load was investigated. The study proved that vertical cracks along the vertical holes of the new type shear wall have been appeared to avoid brittle shear failure, and the shear wall developed integral section wall to walls-columns combination. As the results, the shear walls have the adequate deformability. The test results showed that with the increase of axial compressive ratio, crack development has been limited and the energy dissipation capacity has been improved. It also can be found that with the increase of the axial compressive load, shear capacity of the new type shear walls have been improved.

Analysis on the Ductility Performance of Reinforced Concrete Coupling Beams in Shear Wall Structure

2013 ◽  
Vol 788 ◽  
pp. 538-541
Author(s):  
Peng Zhang ◽  
Fu Ma
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Concrete Strength ◽  
Shear Wall ◽  
Wall Structure ◽  
Coupling Beam ◽  
Coupling Beams ◽  
Element Analysis ◽  
Reinforcement Scheme

Coupling beam, the first line resisting earthquake, is directly related to the overall performance of the shear wall structure. Using the large general finite element analysis software ANSYS, the coupling beam span-depth ratio is 2~3 different reinforcement scheme in finite element analysis. Analysis on the ductility performance of reinforced concrete coupling beams in shear wall structure in three fields: the concrete strength grade, the longitudinal reinforcement ratio and the stirrup ratio, provides a basis for the design of the structure and to provide a reference for similar studies.

scholarly journals Design of an earthquake resisting building using precast concrete cross-braced panels and incorporating energy absorbing devices

1979 ◽  
Vol 12 (4) ◽  
pp. 340-345
Author(s):  
C. D. Matthewson ◽  
R. A. Davey
Keyword(s):  
Precast Concrete ◽  
Office Building ◽  
Cost Estimates ◽  
Braced Frame ◽  
System A ◽  
Steel Members ◽  
Dynamic Analyses ◽  
Inherent Strength ◽  
Strength And Stiffness ◽  
Energy Absorbing

The design and the analysis of an irregular six storey office building are described. The building has an unconventional earthquake resisting system: a precast concrete cross-braced perimeter frame incorporating force-limiting devices (termed "inserts") in the form of enclosed axially yielding short steel members. A series of inelastic dynamic analyses indicates that the system very effectively combines the inherent strength and stiffness of the cross-braced frame with the energy-dissipating function of the yielding inserts. Cost estimates indicate that the system is a particularly economic one.

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