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

Guo, Lei; Wang, Jingfeng; Wang, Hanlan

doi:10.1016/j.engstruct.2023.116337

Cited by 6 publications

(3 citation statements)

References 33 publications

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“…Compared with the flexural-type metal dampers, the shear-type metal dampers have higher stiffness and bearing capacity due to in-plane deformation behavior. To effectively make full use of the steel materials, the yield energy dissipation segment of steel plates is often induced directionally by means of a weakening section, resulting in the development of an X-shaped metal damper [25][26][27][28][29][30][31]. X-shaped metal dampers were used in combination with the stiffening ribs to restrict the out-of-plane deformation of steel plates, such as the channel-like section steel in precast steel-concrete frame structures [27,28], shape-optimized composite metallic yielding dampers in framebracing structures [29], steel panel dampers in precast rocking wall structures [30], etc.…”

Section: Introductionmentioning

confidence: 99%

“…To effectively make full use of the steel materials, the yield energy dissipation segment of steel plates is often induced directionally by means of a weakening section, resulting in the development of an X-shaped metal damper [25][26][27][28][29][30][31]. X-shaped metal dampers were used in combination with the stiffening ribs to restrict the out-of-plane deformation of steel plates, such as the channel-like section steel in precast steel-concrete frame structures [27,28], shape-optimized composite metallic yielding dampers in framebracing structures [29], steel panel dampers in precast rocking wall structures [30], etc. For the tension-yield-type metal damper, round steel has been successfully used in the wall toe of the unbonded post-tensioned precast concrete walls [30,32].…”

Section: Introductionmentioning

confidence: 99%

“…X-shaped metal dampers were used in combination with the stiffening ribs to restrict the out-of-plane deformation of steel plates, such as the channel-like section steel in precast steel-concrete frame structures [27,28], shape-optimized composite metallic yielding dampers in framebracing structures [29], steel panel dampers in precast rocking wall structures [30], etc. For the tension-yield-type metal damper, round steel has been successfully used in the wall toe of the unbonded post-tensioned precast concrete walls [30,32]. Similarly, round steel was also used in combination with a circular steel tube to restrict the buckling deformation of the round steel.…”

Section: Introductionmentioning

confidence: 99%

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Development and Investigation of the Hysteretic Behavior of an X-Shaped Metal Damper with an Oblique Angle

Zhu,

Dang,

Liang

et al. 2023

Applied Sciences

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To investigate the hysteretic behavior of an X-shaped metal damper (XMD) with an oblique angle, cyclic loading tests were carried out on nine specimens, including two XMDs without buckling-restrained devices, four XMDs with stiffening ribs, and three XMDs with cover plates as references. The test results showed that the oblique angle could effectively increase the stiffness, strength, and energy dissipation of the XMD. When the oblique angle of an XMD with stiffening ribs increased from 0° to 30° at the applied displacement of 8.4 mm, the mean strengths and cumulative energy dissipation of specimens increased by about 80.77% and 80.57%, respectively. Although asymmetric hysteretic loops were also observed in specimens with an oblique angle and buckling-restrained devices, stable hysteretic curves were obtained. This indicated that the stiffening ribs and cover plates can effectively constrain the buckling behavior of XMDs. Additionally, the mean strengths of specimens with stiffening ribs were a little higher than those of specimens with cover plates. Subsequently, the finite element analysis models of the XMDs were proposed, in which the metal plasticity model considering isotropic and kinematical hardening was used to model the material properties of steel, and the simulation results matched well with the test results. Finally, the theoretical calculation method was proposed to predict the elastic stiffness of specimens, and the theoretical elastic stiffness matched well with the test results.

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