Mechanical Properties of Metallic Pseudo Rubber-Silicon Rubber Composite for Three-Way Seismic Isolation

Zhao, Yagebai; Ding, Puzheng; Ying, Zhao; Yan, Xuwen

doi:10.18280/rcma.290601

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…In general, the main parameters for evaluating the seismic stability of a slope include acceleration, velocity, and displacement. Among them, the acceleration response of the slope and its distribution law are the basic data for evaluating the dynamic response of the slope under the action of seismic load (Marzoratia et al 2012;Nova-Roessig and Sitar 2016;Li and Cai 2020;Luo et al 2020;Zhao and Dong 2020;Zhao et al 2019;Shibata and Nagao 2020;Michalowski and You 2000).…”

Section: Introductionmentioning

confidence: 99%

Dynamic response of rock slope with anti-dip weak interlayer and its influencing factors under seismic actions

et al. 2021

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The load features of ground motion are mainly reflected by three factors: amplitude, frequency, and duration. The combination of these factors determines the response of rock-soil mass and the structure safety under seismic load. By finite element method, this paper analyzes the influence of the three factors of ground motion on the dynamic response of a slope. The analysis shows that the slope displacement increased with the elevation from the bottom. The anti-dip fault puts the slope in an unfavorable deformation state. Due to the large residual deformation in the fault zone, a large displacement occurred on the slope top. It was also learned that the adjustment of amplitude only leads to proportional growth in the absolute value of the acceleration of the slope. Under the same conditions, the dynamic responses in different parts of the target slope are not greatly affected by the changing amplitude, but depend more on the material and spectral features of the rock-soil mass. The research results provide a reference for the evaluation and prediction of slope seismic stability and the evolution of slope damage under earthquakes with different frequencies, amplitudes, and durations.

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Section: Introductionmentioning

confidence: 99%

Dynamic response of rock slope with anti-dip weak interlayer and its influencing factors under seismic actions

et al. 2021

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“…Based on the previous compressive tests on the MR [22], the stress-strain curve of the specimen (temperature: room temperature; loading frequency: 1Hz; relative density: 0.27; maximum strain amplitude: 20%) in the last cycle was divided into a loading segment and an unloading segment. Then, the loading segment was fitted piecewise by the LS method, producing the lines OA and OB in Figure 1.…”

Section: Constitutive Model Of Mrmentioning

confidence: 99%

Seismic Response of Reinforced Concrete Frame-Shear Wall Structure with Metal Rubber-Based Damper in Coupling Beam

Zhao¹,

Dong²

2020

ACSM

Self Cite

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In reinforced concrete (RC) frame-shear wall structure, the coupling beam needs to yield before the wall limbs are damaged, in order to dissipate the energy of the external load. However, the coupling beam has a limited energy dissipation capacity. Once severely damaged, the coupling beam is difficult to be repaired, which hinders the structural recovery after an earthquake. Considering excellence of metal rubber (MR) in hysteresis energy dissipation and deformation self-reset, this paper changes the energy dissipation mode of the coupling beam by adding an MR damper to the beam. Firstly, the stress-strain curve of MR was obtained through mechanical experiments, and used to construct the constitutive model of the material. Then, the parameters of the damper were designed based on the constitutive model. Next, the MR dampers were installed on the coupling beams of a 12-layer RC frame-shear wall structure. The authors analyzed the time histories of the elastoplastic dynamics of the structure under seismic actions, and calculated the seismic responses like interlayer displacement, absolute acceleration, and base shear force. These parameters were compared with those of the structure without the damper, and the output-deformation envelope curve of the damper on each layer were obtained. In this way, the authors studied how the parameters of the MR damper affect the seismic response of RC frame-shear wall structure. The results show that adding the MR damper to coupling beam can effectively weaken the seismic response of the RC frame-shear wall structure.

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“…Related research tested the seismic resistance of cracked walls reinforced with carbon fiber cloths. Compressive and shear tests were conducted on masonry specimens constructed with materials used in ancient buildings and reinforced by grouting, and concluded that the grouting had improved the mortar performance, integrity and strength of the masonry specimens [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Structural Protection of Ancient Masonry Pagodas Based on Modified Epoxy Resin Infiltration

Zhou¹,

Zhang²,

Wang³

2020

JNMES

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Following the two principles of ancient pagoda protection (i.e. safety first and minimum intervention), this paper attempts to reinforce ancient masonry structures with organic polymer materials, and puts forward the modified epoxy resin (MER) infiltration, a nondestructive reinforcement method for ancient pagodas. A total of 12 specimens in 4 groups were prepared from sticky rice mortar (SRM), and used to test whether the MER infiltration could enhance the masonry structure of ancient pagodas, and explore the constitutive relation of MER-reinforced pagoda structure. The test results show that the MER-reinforced specimens were 40.5%, 11% and 26.7% greater than the original specimens in compressive strength, shear strength and elastic modulus, respectively. Therefore, the MER can effectively reinforce ancient masonry structures. To further verify the effectiveness of our method, the Small Wild Goose (SWG) Pagoda in Xi'an, China, was reinforced by the MER and subjected to vulnerability analysis. The analysis reveals that the MER-reinforced structure is less likely to fail under each level than the original structure. Therefore, the MER provides an effective tool and a good reference for nondestructive protection of ancient brick masonry pagodas.

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Mechanical Properties of Metallic Pseudo Rubber-Silicon Rubber Composite for Three-Way Seismic Isolation

Cited by 4 publications

References 19 publications

Dynamic response of rock slope with anti-dip weak interlayer and its influencing factors under seismic actions

Dynamic response of rock slope with anti-dip weak interlayer and its influencing factors under seismic actions

Seismic Response of Reinforced Concrete Frame-Shear Wall Structure with Metal Rubber-Based Damper in Coupling Beam

Structural Protection of Ancient Masonry Pagodas Based on Modified Epoxy Resin Infiltration

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