Improvement of seismic performance of precast frames with cladding panels fastened by energy dissipative steel cushions

A new connection measure between the precast concrete (PC) cladding panel and PC frame structure is proposed to realize a new kind of isostatic frame-cladding system. Three full-scale PC wall-frame substructures were tested under the quasi-static load. These substructures included a bare wall-frame specimen, a specimen with a cladding panel that has no opening, and a specimen with a cladding panel that has an opening in it. The damage evolution, failure mode, load-bearing capacity, deformation capacity, and energy dissipation capacity of three specimens were compared. The results indicated that the motions of the cladding panels and the main structures were uncoupled through the relative clearance of the bottom connections, and three specimens exhibited approximately identical failure modes and seismic performance. Thus, the reliability of this new isostatic system was validated.

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The Emilia Earthquake: Seismic Performance of Precast Reinforced Concrete Buildings

Earthquake Spectra ◽

10.1193/091012eqs285m ◽

2014 ◽

Vol 30 (2) ◽

pp. 891-912 ◽

Cited By ~ 98

Author(s):

Gennaro Magliulo ◽

Marianna Ercolino ◽

Crescenzo Petrone ◽

Orsola Coppola ◽

Gaetano Manfredi

Keyword(s):

Seismic Performance ◽

Seismic Event ◽

Seismic Vulnerability ◽

Northern Italy ◽

Epicentral Zone ◽

Emilia Earthquake ◽

Cladding Panels ◽

Precast Structures ◽

Epicentral Region ◽

Extensive Damage

On 20 and 29 May 2012, two earthquakes of MW5.9 and MW5.8 occurred in the Emilia region of northern Italy, one of the most developed industrial centers in the country. A complete photographic report collected in the epicentral zone shows the seismic vulnerability of precast structures, the damage to which is mainly caused by connection systems. Indeed, the main recorded damage is either the loss of support of structural horizontal elements, due to the failure of friction beam-to-column and roof-to-beam connections, or the collapse of the cladding panels, due to the failure of the panel-to-structure connections. The damage can be explained by the intensity of the recorded seismic event and by the exclusion of the epicentral region from the seismic areas recognized by the Italian building code up to 2003. Simple considerations related to the recorded acceleration spectra allow motivating the extensive damage due to the loss of support.

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Assessment of the Seismic Behavior of a Precast Reinforced Concrete Industrial Building with the Presence of Horizontal Cladding Panels

Buildings ◽

10.3390/buildings11090400 ◽

2021 ◽

Vol 11 (9) ◽

pp. 400

Author(s):

Liana Ostetto ◽

Romain Sousa ◽

Hugo Rodrigues ◽

Paulo Fernandes

Keyword(s):

Reinforced Concrete ◽

Seismic Performance ◽

Seismic Behavior ◽

Human Life ◽

Industrial Building ◽

Industrial Park ◽

Main Structure ◽

Cladding Panels ◽

Critical Problems ◽

Nonlinear Static

The latest earthquakes in Europe exposed some critical problems in the connections of cladding panels in industrial precast reinforced concrete (PRC) structures. These connections did not perform as desired, causing the panels to fall, leading to significant nonstructural damage that resulted in the loss of human life and significant socio-economic impacts due to the interruption of business. Furthermore, in addition to the behavior of the cladding system itself, it is still not clear to what extent it can influence the overall seismic performance of the main structure. Making use of a simplified macroelement, the present study assesses the seismic performance of commonly employed cladding-to-structure connections, as well as the interaction of cladding panels with industrial PRC buildings. The analyses were carried out considering a PRC building representative of a Portuguese industrial park, studied with and without cladding panels. The seismic behavior of the structure was assessed considering both nonlinear static and dynamic procedures.

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Evaluation of out-of-plane seismic performance of column-to-column precast concrete cladding panels in one-storey industrial buildings

Earthquake Engineering & Structural Dynamics ◽

10.1002/eqe.2956 ◽

2017 ◽

Vol 47 (2) ◽

pp. 397-417 ◽

Cited By ~ 7

Author(s):

Andrea Belleri ◽

Fabrizio Cornali ◽

Chiara Passoni ◽

Alessandra Marini ◽

Paolo Riva

Keyword(s):

Seismic Performance ◽

Precast Concrete ◽

Industrial Buildings ◽

Out Of Plane ◽

Cladding Panels

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Effect of lightweight cladding panels on the seismic performance of moment resisting steel frames

Engineering Structures ◽

10.1016/j.engstruct.2005.06.004 ◽

2005 ◽

Vol 27 (11) ◽

pp. 1662-1676 ◽

Cited By ~ 19

Author(s):

Gianfranco De Matteis

Keyword(s):

Seismic Performance ◽

Steel Frames ◽

Moment Resisting ◽

Cladding Panels

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Enhancing the Seismic Performance of Precast RC Frames with Cladding Panels through Setting U-Shaped Dampers and Rocking Walls

Shock and Vibration ◽

10.1155/2020/4182094 ◽

2020 ◽

Vol 2020 ◽

pp. 1-16

Author(s):

Qing Jiang ◽

Hanqin Wang ◽

Yulong Feng ◽

Xun Chong ◽

Junqi Huang ◽

...

Keyword(s):

Seismic Performance ◽

Time History ◽

Seismic Energy ◽

Structural Deformation ◽

Relative Deformation ◽

Rc Frames ◽

Steel Bar ◽

Cladding Panels ◽

Dynamic Time ◽

Rocking Walls

An approach combining U-shaped dampers (USDs) and rocking walls is proposed in this paper to improve the seismic performance of traditional precast reinforced concrete (RC) frames with cladding panels (PRCFCPs): (1) the steel bar and USD connection methods are adopted at the top and bottom of the cladding panels to use the relative deformation between the cladding panels and the main structure and then dissipate the seismic energy and (2) rocking walls are added to the structure to control the structural deformation profiles. The USD numerical model is calibrated using the test data, and a series of nonlinear pushover analyses, dynamic time-history analyses, and incremental dynamic analyses are successively performed to compare the seismic performance and collapse capacity of the PRCFCP, PRCFCP with USDs (PRCFCP-USD), and PRCFCP with USDs and rocking walls (PRCFCP-USD-RW).The results show that the USDs in the PRCFCP-USD-RW undergo more uniform deformation along the structural height and higher energy dissipation efficiency and the PRCFCP-USD-RW exhibits enhanced seismic performance and collapse capacity, which verify the superiority of the proposed combined approach.

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