Investigation on seismic behavior of RC shear walls with multiple post-construction openings based on experiment and simulation

Zhang, Yu-Wei; Yuan, Guanglin; Shu, Qianjin; Ming-quan, Zhu; Lu, Limin

doi:10.1016/j.jobe.2021.103707

Cited by 7 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The total deformation of the shear wall consists of bending deformation and shear distortion at the loading point. The shear distortion Δ s is defined as the deformation induced by the shear force, and can be calculated by Equation () 35 using the schematic diagram depicted in Figure 20, where d 1 and d 2 are the original diagonal lengths, respectively, D 1 and D 2 are respectively the elongation or shortening measured by the LVDTs D1 and D2 (Figure 9b), and h ′ is the height of the calculated section for shear deformation.

Δ_{normals} = \frac{1}{2} |\sqrt{{((), d_{1} goodbreak+ D_{1})}^{2} - h'^{2}} - \sqrt{{((), d_{2} goodbreak+ D_{2})}^{2} - h'^{2}}|

…”

Section: Test Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Testing of precast recycled aggregate concrete shear wall with pressed sleeve connection subjected to cyclic loading

Yuan

Cai

Wang

et al. 2023

Structural Concrete

View full text Add to dashboard Cite

The pressed sleeve connection is a new type of connection technique reported in China recently. To explore the possibility of combining the advantages of pressed sleeve connections and recycled aggregate concrete (RAC) in precast concrete, the seismic performance of precast shear walls with pressed sleeves and recycled fine aggregate (RFA) concrete was investigated through a thorough experimental programme. A total of seven precast shear wall specimens and one cast‐in‐situ specimen were fabricated and tested under lateral cyclic loading, considering the effects of the aspect ratio, the axial compression ratio, and the RFA content. The failure modes, hysteretic behavior, bearing capacity, energy dissipation, stiffness and shear distortion of the specimens, as well as the strains of the steels, were reported and discussed. The test results demonstrated that the pressed sleeve connections were capable of transmitting both tensile and compressive forces between reinforcements, and the precast shear walls with pressed sleeve connections exhibited the same hysteresis behavior, strengths, ductility coefficient and energy dissipation capacity as the cast‐in‐situ counterpart. Moreover, the seismic behavior of the precast specimens with the RFA content of 30% was almost the same as those with natural aggregate concrete (NAC). The increase in the axial compression ratio and aspect ratio led to higher peak loads of the precast shear walls. Finally, existing design methods of ordinary reinforced concrete shear walls were evaluated for their application to the design of precast RFA concrete shear walls with pressed sleeves. Overall, the evaluation results revealed that the examined design methods offer generally accurate strength predictions for the proposed shear walls.

show abstract

Δ_{normals} = \frac{1}{2} |\sqrt{{((), d_{1} goodbreak+ D_{1})}^{2} - h'^{2}} - \sqrt{{((), d_{2} goodbreak+ D_{2})}^{2} - h'^{2}}|

…”

Section: Test Results and Discussionmentioning

confidence: 99%

Section: Shear Distortionmentioning

confidence: 99%

Testing of precast recycled aggregate concrete shear wall with pressed sleeve connection subjected to cyclic loading

Yuan

Cai

Wang

et al. 2023

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…https://www.indjst.org/ According to the results of the investigation, it is evident that constructions with regular plans are more resistant to seismic pressures. Former studies have been done on the basis of regular structures and found the best positions of the shear wall by comparing dynamic parameters (19,20) . That was favoured by many characteristics including storey displacement, drift, and stiffness.…”

Section: Resultsmentioning

confidence: 99%

“…When referring to seismically vulnerable places, adding structural elements like an RC shear wall can be used to improve the performance of the RC frame structure under horizontal loads. If the oscillation time of the structure is shorter, then the stiffness and mass of the structure are greater (20) . The fact that the oscillation period of the RC frame structure with the shear wall is reduced by 50% to 60% when compared to the oscillation period of the RC frame G+14 multi-story structure without a shear wall reveals that the structure with the shear wall has a higher stiffness than the structure without the shear wall.…”

Section: Resultsmentioning

confidence: 99%

A Comparative Study of Geometry and Locations of Shear Walls on Regular and Irregular RC Structures by Using Response Spectrum Analysis

Krishnan¹,

Sivakumar²

2023

IJST

View full text Add to dashboard Cite

Objectives:The current study intended to compare the geometry and location of shear walls on regular and irregular structures. Method: Using the software Response Spectrum method in ETABS, the dynamic parameters of irregular and regular structures with varied shear wall positions have been compared in this research. Findings: The output completely favours the system with shear wall rather than the system without a shear wall. The oscillation period of the RC frame structure with the shear wall is reduced by 50% to 60% when compared to the oscillation period of the RC frame G+14 multi-story structure without a shear wall. Stiffness and dynamic parameters also favour Regular buildings with the shear wall. Novelty: The novelty of this work is the comparative study of regular and irregular structures by considering both the parameters like the location of the shear wall along with geometry and material nonlinearity.

show abstract

“…In other cases, due to functional modifications of the existing buildings, new openings are needed to be cut out into the structural walls, to assure the ventilation or heating services paths. The openings could significantly modify the seismic behavior of structural walls and have to be considered in the design process of the structures [2], [3]. In the literature the subject related to the seismic behavior of composite steel-concrete shear walls with centered or staggered openings is not thoroughly investigated, additional investigations and analytical or numerical studies are needed to extend the knowledge and the existing database of such structural elements.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis on composite steel-concrete shear walls with centered and staggered openings

Todea,

Popescu,

Dan

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Present paper presents a comparative study made on the seismic performance of composite steel-concrete shear walls with rectangular openings, by performing numerical analyses using ATENA 3D software. Two specimens were designed at a reduced scale 1:3 having similar arrangements in the cross-section and the same geometry. First element was conceived with centered openings while the second one was designed with staggered openings. Steel connectors disposed as horizontal stiffeners were used to design and to assure the full connection between the structural steel profiles embedded in the edges and the concrete core. The openings that were considered on each story of the walls, were having the dimension of a common architectural door. A part of the results recorded from the experimental tests were used to calibrate the numerical models. This study aims to establish the seismic performance and to investigate the influence of the openings and the geometric position on the overall seismic behavior of the composite shear walls. Key parameters which describe the seismic performance of structural elements such: bearing capacity, deformation capacity, stiffness degradation, cracks and strain development are compared between the specimens and discussed. The results showed that different arrangements of the openings could significantly modify or increase the seismic performance of the composite structural walls.

show abstract

Investigation on seismic behavior of RC shear walls with multiple post-construction openings based on experiment and simulation

Cited by 7 publications

References 11 publications

Testing of precast recycled aggregate concrete shear wall with pressed sleeve connection subjected to cyclic loading

Testing of precast recycled aggregate concrete shear wall with pressed sleeve connection subjected to cyclic loading

A Comparative Study of Geometry and Locations of Shear Walls on Regular and Irregular RC Structures by Using Response Spectrum Analysis

Finite element analysis on composite steel-concrete shear walls with centered and staggered openings

Contact Info

Product

Resources

About