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. 2022 Apr 6;15(7):2688.
doi: 10.3390/ma15072688.

Reliability Analysis of Reinforced Concrete Structure with Shock Absorber Damper under Pseudo-Dynamic Loads

Chun-Chieh Yip  1 , Jing-Ying Wong  2 , Mugahed Amran  3   4 , Roman Fediuk  5   6 , Nikolai Ivanovich Vatin  6
Affiliations

Reliability Analysis of Reinforced Concrete Structure with Shock Absorber Damper under Pseudo-Dynamic Loads

Chun-Chieh Yip et al. Materials (Basel). .

Abstract

Past historical earthquake events from neighbouring countries have been proven to be disastrous. Building in the aftermath of an earthquake may reduce structural reliability, posing risk upon re-occupation of the building. Shock absorber viscous dampers were installed on a specific structure storey that could reduce the spectral acceleration and storey-drift caused by an earthquake. The research object is a low-rise, three-storey, reinforced concrete (RC) structure. This study aims to identify the dynamic response of the scaled RC structure with and without attached dampers and performs structural reliability of the tested model under the excitation of Peak Ground Acceleration (PGA) of 0.1 g to 1.0 g with a unidirectional shaking table. APIDO viscous dampers were installed parallel to the movement direction of the dynamic load test. The findings show the scaled model with attached viscous dampers reduces spectral acceleration and storey drift by 9.66% and 4.85%, respectively. Findings also show the change of the structural behaviour from single curvature to double curvature due to the increase in seismic structural resistance by viscous dampers. The breakthrough of this research shows that structural reliability analysis performed by the Weibull distribution function has a base shear capacity increment of 1.29% and 6.90% in seismic performance level Life Safety (LS) and Collapse Prevention (CP), respectively. The novelty of this case study building with dampers managed to increase the building's base shear and roof shear capacity by 6.90% and 16% compared to the building without dampers under dynamic load excitation.

Keywords: damper; dynamic response; reliability analysis; scaled model; seismic.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Ring of fire, covering Malaysia.
Figure 2
Figure 2
Graph of building response to member response.
Figure 3
Figure 3
Weibull PDF curve with varying β values.
Figure 4
Figure 4
(a) Elevation view of full-scale building; (b) general layout of scaled RC structure.
Figure 4
Figure 4
(a) Elevation view of full-scale building; (b) general layout of scaled RC structure.
Figure 5
Figure 5
Placement of accelerometer and LVDT.
Figure 6
Figure 6
Arrangement of viscous dampers.
Figure 7
Figure 7
Spectral acceleration of structure without dampers.
Figure 8
Figure 8
Spectral acceleration of structure with dampers.
Figure 9
Figure 9
Storey drift of structure without dampers.
Figure 10
Figure 10
Storey drift of structure with dampers.
Figure 11
Figure 11
Inter-storey drift of structure without dampers.
Figure 12
Figure 12
Inter-storey drift of structure with dampers.
Figure 13
Figure 13
Reliability plot for structures with and without dampers attached to the base storey.
Figure 14
Figure 14
Reliability plot for structures with and without dampers attached on the second storey.
Figure 15
Figure 15
Reliability plot for structures with and without dampers attached to the roof storey.
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