Nonlinear dynamic response of R/C buildings strengthened with novel stud-typed seismic control system using non-buckling slit damper

Lee, Kangseok; Lee, Bok-Gi; Jung, Ju-Seong

doi:10.1016/j.engstruct.2021.112749

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…Meanwhile, representative seismic strengthening methods for existing R/C buildings without seismic reinforcement include strength reinforcement methods (the R/C wall installation method, section enlargement method, and steel brace method), deformation capacity improvement methods (the steel-plate reinforcement method, wire-mesh insertion reinforcement method, and fiber-reinforced polymer (FRP) reinforcement method), methods for improving the energy absorption capacity using seismic damping systems, and seismic isolation methods [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance Evaluation of Reinforced Concrete Buildings Retrofitted with a New Concrete Filled Tube Composite Strengthening System

Baek,

Jung,

Lee

et al. 2023

Applied Sciences

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This study proposes a concrete-filled tube composite strengthening system (CCSS), which is a new concept that can improve and supplement the vulnerability of existing CFT seismic strengthening methods. The CCSS seismic reinforcement method is easy to construct and integrates with the existing frame and reinforcement. It is one of the seismic strengthening methods that allows the simple calculation of the required amount of seismic reinforcement and can efficiently increase the strength when applied to existing reinforced concrete (R/C) buildings with non-seismic details dominated by shear failure. To examine the seismic safety of the proposed CCSS, two framework specimens were prepared based on an existing R/C building with non-seismic details. A pseudo-dynamic test was conducted on the unreinforced framework specimen and the framework specimen reinforced with CCSS to verify the seismic strengthening effect of applying CCSS to the existing R/C framework, i.e., in terms of the load–displacement characteristics and seismic response control capability. Based on the pseudo-dynamic test results, restoration of the force characteristics was proposed for the nonlinear dynamic analysis of the building reinforced with CCSS. Nonlinear dynamic analysis was conducted based on the proposed restoration of the force characteristics, and the results were compared with the pseudo-dynamic test results. Finally, for the commercialization of CCSS, nonlinear dynamic analysis was conducted on the existing whole R/C building with non-seismic details that was reinforced with CCSS. The seismic strengthening effect was then verified by examining the seismic response load, displacement characteristics, and the degree of seismic damage to the members based on the ductility ratio before and after seismic strengthening. The study results show that under a design basis earthquake with a magnitude of 200 cm/s2, the unreinforced R/C building exhibits shear failure, and light seismic damage is expected on the CCSS-reinforced building.

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Section: Introductionmentioning

confidence: 99%

Seismic Performance Evaluation of Reinforced Concrete Buildings Retrofitted with a New Concrete Filled Tube Composite Strengthening System

Baek,

Jung,

Lee

et al. 2023

Applied Sciences

Self Cite

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“…[13][14][15] Composite dampers with multiple energy dissipation principles have also been proposed and developed, for example, metal and viscoelastic composite dampers, [16][17][18] steel tube and lead core composite dampers, [19][20][21][22] lead and rubber composite dampers, [23][24][25] etc. [26][27][28][29][30] Most dampers efficiently dissipate earthquake energy and control the seismic response of shear wall structures. However, some optimizable aspects of coupling beam dampers, such as insufficient initial stiffness and relatively large post-earthquake residual deformations, can potentially increase the cost of reconstruction and rapid restoration of shear wall structures after earthquakes.…”

Section: Introductionmentioning

confidence: 99%

“…Over the years, researchers have examined various coupling beam dampers with different energy dissipation principles, such as friction dampers, 3–9 viscoelastic dampers, 10–12 and metal dampers 13–15 . Composite dampers with multiple energy dissipation principles have also been proposed and developed, for example, metal and viscoelastic composite dampers, 16–18 steel tube and lead core composite dampers, 19–22 lead and rubber composite dampers, 23–25 etc 26–30 . Most dampers efficiently dissipate earthquake energy and control the seismic response of shear wall structures.…”

Section: Introductionmentioning

confidence: 99%

Development and investigation of an innovative shape memory alloy cable‐controlled self‐centering viscoelastic coupling beam damper for seismic mitigation in coupled shear wall structures

Qian

Fan

Shi

et al. 2022

Earthq Engng Struct Dyn

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To improve the seismic performance of coupled shear walls in high‐rise buildings and to eliminate the problems of large residual deformation and relatively small initial stiffness and damping properties of the traditional viscoelastic coupling beam damper (TVCBD), an innovative shape memory alloy (SMA)‐cable‐controlled self‐centering viscoelastic coupling beam damper (SVCBD) with energy dissipation and self‐centering capabilities was designed and investigated in this study. The construction form and operating principles of the SVCBD were proposed, relevant material performance tests of the cables were performed, and good results were obtained. Finally, the contribution of the SVCBD to seismic mitigation of a 10‐story reinforced concrete coupled shear wall structure was verified by seismic time‐history analyses. The results indicated that compared with TVCBD, SVCBD possesses fuller hysteretic curves, showing stronger energy dissipation capacity, higher initial stiffness, and much smaller residual deformation. The initial strain and cross‐sectional area of the SMA cables and the shear area of the viscoelastic plates affect the energy dissipation and self‐centering performance of SVCBD significantly. The seismic response and post‐earthquake residual deformation of the coupled shear wall structure and the plastic damage of the main components can be effectively controlled by utilizing the proposed SVCBD.

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Seismic design and hybrid simulation test of existing concrete frames upgraded by metallic damper

Guo

Wang

2023

Engineering Structures

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Nonlinear dynamic response of R/C buildings strengthened with novel stud-typed seismic control system using non-buckling slit damper

Cited by 6 publications

References 19 publications

Seismic Performance Evaluation of Reinforced Concrete Buildings Retrofitted with a New Concrete Filled Tube Composite Strengthening System

Seismic Performance Evaluation of Reinforced Concrete Buildings Retrofitted with a New Concrete Filled Tube Composite Strengthening System

Development and investigation of an innovative shape memory alloy cable‐controlled self‐centering viscoelastic coupling beam damper for seismic mitigation in coupled shear wall structures

Seismic design and hybrid simulation test of existing concrete frames upgraded by metallic damper

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