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Volume 13
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Article

Investigation on the Seismic Performance of RC Frame Buildings with Rubber Isolation Bearing Installed in Staircases

by
Liang Bai
1,*,
Xingwen Liang
2,
Li Xin
3,
Mingxiao Liu
1,
Ziming Yu
1 and
Yage Chu
1
1
School of Civil Engineering, Chang’an University, Xi’an 710061, China
2
School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
3
China Northwest Architecture Design and Research Institute Co., Ltd., Xi’an 710018, China
*
Author to whom correspondence should be addressed.
Buildings 2023, 13(3), 616; https://doi.org/10.3390/buildings13030616
Submission received: 19 January 2023 / Revised: 14 February 2023 / Accepted: 24 February 2023 / Published: 26 February 2023
(This article belongs to the Special Issue Improvement Technology on Building Seismic Toughness)
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Abstract

A rubber isolation bearing installed in a staircase (RBS) was proposed to mitigate seismic damages to the component of staircases and improve their seismic performance. A series of quasi-static tests performed with respect to the horizontal and vertical mechanical properties of RBS as well as the numerical modelling were verified with experimental results. Next, the finite element models of typical types of reinforced concrete frames (without stairs, with cast-in-place reinforced concrete stairs, and with RBS stairs) were established. The modal dynamic and non-linear elasto-plastic analyses of system-level building models were herein conducted, respectively. The effect of the RBS on the dynamic response of the whole structure and the mechanical performance of stair components was revealed. The analysis results indicated that the RBS provided the desired floor-to-floor relative drift and effectively isolate the seismic action from the stair flight. Therefore, the presence of RBS can effectively mitigate the influence of a staircase on the entire building’s structure, weaken the diagonal strut effect of flights, and reduce the inner forces of staircase components.
Keywords: rubber isolation bearing; staircase; isolation properties; dynamic response; numerical simulation rubber isolation bearing; staircase; isolation properties; dynamic response; numerical simulation

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MDPI and ACS Style

Bai, L.; Liang, X.; Xin, L.; Liu, M.; Yu, Z.; Chu, Y. Investigation on the Seismic Performance of RC Frame Buildings with Rubber Isolation Bearing Installed in Staircases. Buildings 2023, 13, 616. https://doi.org/10.3390/buildings13030616

AMA Style

Bai L, Liang X, Xin L, Liu M, Yu Z, Chu Y. Investigation on the Seismic Performance of RC Frame Buildings with Rubber Isolation Bearing Installed in Staircases. Buildings. 2023; 13(3):616. https://doi.org/10.3390/buildings13030616

Chicago/Turabian Style

Bai, Liang, Xingwen Liang, Li Xin, Mingxiao Liu, Ziming Yu, and Yage Chu. 2023. "Investigation on the Seismic Performance of RC Frame Buildings with Rubber Isolation Bearing Installed in Staircases" Buildings 13, no. 3: 616. https://doi.org/10.3390/buildings13030616

APA Style

Bai, L., Liang, X., Xin, L., Liu, M., Yu, Z., & Chu, Y. (2023). Investigation on the Seismic Performance of RC Frame Buildings with Rubber Isolation Bearing Installed in Staircases. Buildings, 13(3), 616. https://doi.org/10.3390/buildings13030616

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