Behavior of Precast Concrete Shear Walls for Seismic Regions: Comparison of Hybrid and Emulative Specimens

Smith, Brian J.; Kurama, Yahya C.; McGinnis, Michael J.

doi:10.1061/(asce)st.1943-541x.0000755

Cited by 149 publications

(64 citation statements)

References 13 publications

(19 reference statements)

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“…It is also assumed that the PT tendon behaves in a linear elastic manner during the entire loading process which has been verified by a number of experimental studies concerning SC walls [20,23,24]. For convenience, the wall is still assumed to be a rigid body neglecting the deformation concentrating on the contact region between the wall and the PT tendon [21].…”

Section: Rocking Response Of the Sc Wall With Pt Tendonmentioning

confidence: 99%

Rocking Response Analysis of Self-Centering Walls under Ground Excitations

Yang

2018

Mathematical Problems in Engineering

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This paper presents a numerical procedure to simulate the rocking response of self-centering walls under ground excitations. To this aim, the equations of motion that govern the dynamic response of self-centering walls are first formulated and then solved numerically, in which three different self-centering wall structural systems are considered, that is, (i) including the self-weight of the wall only, (ii) including posttensioned tendon, and (iii) including both posttensioned tendon and dampers. Following the development of the numerical procedure, parametric studies are then carried out to investigate the influence of a variety of factors on the dynamic response of the self-centering wall under seismic excitations. The investigation results show that within the cases studied in this paper the installation of posttensioned tendon is capable of significantly enhancing the self-centering ability of the self-centering wall. In addition, increasing either the initial force or the elastic stiffness of the posttensioned tendon can reduce the dynamic response of the self-centering wall in terms of the rotation angle and angular velocity, whereas the former approach is found to be more effective than the latter one. It is also revealed that the addition of the dampers is able to improve the energy dissipation capacity of the self-centering wall. Furthermore, for the cases studied in this paper the yield strength of the dampers appears to have a more significant effect on the dynamic response of the self-centering wall than the elastic stiffness of the dampers.

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Section: Rocking Response Of the Sc Wall With Pt Tendonmentioning

confidence: 99%

Rocking Response Analysis of Self-Centering Walls under Ground Excitations

Yang

2018

Mathematical Problems in Engineering

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“…In 2009, specialists proposed that “restorable functional city” is the primary target of seismic engineering cooperation . Because of its good self‐resetting performance, UPT structures have become a new research focus of scholars all over the world . The combination of low‐yield‐point steel and UPT steel for enhancing the horizontal resistance can improve the energy dissipation capacity of assembled shear walls.…”

Section: Introductionmentioning

confidence: 99%

Experimental and shear bearing capacity studies of the assembled composite wall with bolted connections

Huang

Miao

et al. 2020

Structural Design Tall Build

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Summary To realize the dry connection of an assembled composite wall structure, a bolted connection based on the horizontal joint of an assembled composite wall is proposed. Five specimens were designed under monotonic loading. The failure modes, the seismic performance of the specimens, and the strains and slip of the connectors were studied. The plate thickness and the high‐strength bolts diameter are the key points of research. Moreover, the finite element model for experiment is also established, and the parameters are analyzed based on the numerical models. The results of the experiments and the simulations show that the bolted connection is feasible and the specimens have good deformation capacity. Increasing the plate thickness can improve the bearing capacity of the specimens. Finally, the formula for the shear bearing capacity of the specimen is obtained.

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“…In this system, the upper and lower posttensioned precast wall panels are normally assembled across horizontal joints at the floor levels using UPT steel, whereas vertical joints between the adjacent wall panels generally use ductile connectors to transfer the vertical shear force and dissipate energy under seismic loading. Further studies adopted a combination of mild steel and high‐strength UPT steel to enhance the energy‐dissipating capacity of the UPT walls. However, thicker walls are generally required to cope with the high compressive force resulting from the vertical posttensioning in the UPT precast concrete wall system, and special confining reinforcement such as spiral reinforcement may also be required at the edges of the wall.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of lateral load behavior of H‐shaped precast reinforced concrete shear walls with bolted steel connections

Sun,

Qiu,

et al. 2019

Structural Design Tall Build

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Summary This paper presents an experimental study of H‐shaped precast reinforced concrete shear walls involving vertical connections under combined vertical and lateral loading. The H‐wall is composed of two prefabricated flange wall panels: one prefabricated web wall panel and vertical bolted steel connections between the flange and web panels. The assembling of the H‐wall is completely dry without any in situ casting. Three H‐wall specimens were constructed and tested to investigate the mechanical behavior and seismic performance of them. The lateral load‐bearing capacity, ductility, energy dissipation, lateral stiffness, strain in the connecting steel frame, and sliding within the bolted steel connections are presented and discussed to evaluate the effectiveness of the vertical connections. The ultimate shear‐resistance mechanism of the precast H‐wall assembly is also analyzed. The H‐wall assemblies generally possess high load‐bearing capacity, favorable ductility, and good energy‐dissipating capacity. The thickness of the steel plates in the connecting steel frame affects the lateral stiffness and the ultimate load‐bearing capacity of the H‐walls. Furthermore, the encasing steel plates for the web wall panel not only helps transfer the stress in the wall steel bars but also confines the concrete resulting in improved ductility.

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Behavior of Precast Concrete Shear Walls for Seismic Regions: Comparison of Hybrid and Emulative Specimens

Cited by 149 publications

References 13 publications

Rocking Response Analysis of Self-Centering Walls under Ground Excitations

Rocking Response Analysis of Self-Centering Walls under Ground Excitations

Experimental and shear bearing capacity studies of the assembled composite wall with bolted connections

Experimental study of lateral load behavior of H‐shaped precast reinforced concrete shear walls with bolted steel connections

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