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Sustainability 2019, 11(3), 936; https://doi.org/10.3390/su11030936

Study on Column-Top Seismic Isolation of Single-Layer Latticed Domes

1
Shanghai Institute of Disaster Prevention and Relief, Tongji University, Shanghai 200082, China
2
Department of Civil Engineering, Tongji University, Shanghai 200082, China
3
ARTS GROUP Co., Ltd., Suzhou 215000, China
4
College of Architecture and Urban Planning, Tongji University, Shanghai 200082, China
*
Author to whom correspondence should be addressed.
Received: 27 December 2018 / Revised: 3 February 2019 / Accepted: 7 February 2019 / Published: 12 February 2019
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Abstract

In this paper, a single-layer lamella reticulated dome with reinforced concrete bearings was studied, and a method of column-top isolation was proposed to improve the seismic performance of the whole structure, thereby avoiding too large support stiffness in engineering practice. A nonlinear time-history analysis showed that lead rubber bearings (LRB) can reduce the support reaction to a certain extent and make it distribute uniformly, reducing the support design requirements under frequent earthquakes. During rare earthquakes, the LRB was basically in the plastic state and the support reaction remained near the yield force, which was reduced greatly compared with that of the original structure. The bearing hysteresis curve was full, while the plasticity development degree of the upper reticulated dome was greatly reduced and the elasticity was basically maintained, thus achieving a good damping effect. View Full-Text
Keywords: column-top isolation; single-layer reticulated dome; nonlinear time-history analysis; damping effect column-top isolation; single-layer reticulated dome; nonlinear time-history analysis; damping effect
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhai, Y.; Fu, X.; Chen, Y.; Hu, W. Study on Column-Top Seismic Isolation of Single-Layer Latticed Domes. Sustainability 2019, 11, 936.

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