Role of wall panel connections on the seismic performance of precast structures
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- 作者：Fabio Biondini (1)
Bruno Dal Lago (1)
Giandomenico Toniolo (1) - 关键词：Seismic design ; Concrete structures ; Precast structures ; Cladding wall panels ; Connection devices
- 刊名：Bulletin of Earthquake Engineering
- 出版年：2013
- 出版时间：August 2013
- 年：2013
- 卷：11
- 期：4
- 页码：1061-1081
- 全文大小：2272KB
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Bruno Dal Lago (1)
Giandomenico Toniolo (1)
1. Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza L. da Vinci, 32, 20133, Milan, Italy
文摘
Past seismic events, including the 2009 L’Aquila earthquake and the 2012 Emilia earthquake, clearly demonstrated the inadequacy of the current design approach for the connection system of the cladding wall panels of precast buildings. To clarify this problem the present paper investigates the seismic behaviour of a traditional precast structural frame for industrial buildings with a new type of connection system of cladding panels. This system consists of a statically determined pendulum arrangement of panels, each supported with two hinges to the structure, one at the top and one at the bottom, so to have under seismic action a pure frame behaviour where the wall panels are masses without stiffness. Adding mutual connections between the panels, the wall cladding panels become part of the resisting structure, leading to a dual frame/wall system or to a wall system depending on the stiffness of the connections. The seismic behaviour of this structural assembly is investigated for different degrees of interaction between frame and panels, as well as for an enhanced solution with dissipative connections. The results of nonlinear static (pushover) analyses and nonlinear dynamic analyses under recorded and artificial earthquakes highlight the role of the wall panel connections on the seismic behaviour of the structural assembly and show the effectiveness of the dual frame/wall system with dissipative connections between panels.