Neoprene–concrete friction relationships for seismic assessment of existing precast buildings

Magliulo, Gennaro; Capozzi, Vittorio; Fabbrocino, Giovanni; Manfredi, Gaetano

doi:10.1016/j.engstruct.2010.11.011

Cited by 58 publications

(40 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This outcome justifies the use of friction connections in existing structures. Vice versa, if the experimental coefficients proposed by Magliulo et al (2011) are considered (c = 0.13 ÷ 0.09), the capacity decreases and, in 25% cases, it can be exceeded by the shear demand. It can be concluded that an unrealistic high friction coefficient for the evaluation of the shear capacity of the connections in the past Italian codes allowed the use of friction connections.…”

Section: Considerations Concerning Use Of Friction Connectionsmentioning

confidence: 99%

“…According to the experimental studies conducted by Magliulo et al (2011) on neopreneto-concrete connections, the friction coefficient varies in the range 0.09 ÷ 0.13 for compressive stress varying between 1.7 MPa and 5.3 MPa. In Figure 16a these limits are compared to the recorded spectral ordinates.…”

Section: Seismic Action and Considerations Concerning Damage Due To Tmentioning

confidence: 99%

See 1 more Smart Citation

The Emilia Earthquake: Seismic Performance of Precast Reinforced Concrete Buildings

et al. 2014

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Considerations Concerning Use Of Friction Connectionsmentioning

confidence: 99%

Section: Seismic Action and Considerations Concerning Damage Due To Tmentioning

confidence: 99%

The Emilia Earthquake: Seismic Performance of Precast Reinforced Concrete Buildings

et al. 2014

Self Cite

View full text Add to dashboard Cite

show abstract

“…The blue curve in Fig. 9 includes both the shear 19 strength of the retrofitting connection systems, placed on both the East and the West sides of the 20 tested specimen, and the concrete-to-neoprene friction forces, depending on both the contact surface 21 features and the acting vertical loads (Magliulo et al 2011). 22 The negative values of forces and displacements correspond to pulling loads, i.e.…”

Section: Experimental Results 16mentioning

confidence: 99%

“…Moreover, in the following years the same authors experimentally defined the frictional strength for 10 the typical existing frictional connections (neoprene-concrete) (Magliulo et al 2011) and they found 11 out that the frictional coefficient values were lower than the values adopted in the previous study, 12…”

Section: Introduction 22mentioning

confidence: 99%

Cyclic shear tests on RC precast beam-to-column connections retrofitted with a three-hinged steel device

Magliulo

Cimmino

Ercolino

et al. 2017

Bull Earthquake Eng

Self Cite

View full text Add to dashboard Cite

“…Few studies were conducted in the past on nonstructural components performance evaluation, particularly referring to suspended ceiling systems [5][6][7] and plasterboard partitions [8][9][10][11]. Very limited studies were conducted in the past on the seismic behaviour of hollow brick internal partitions, even though they are very common in the European area both in residential and industrial buildings [12,13]. Furthermore, recent earthquakes demonstrated that brick partitions usually exhibit extensive damage jeopardizing the functionality of the whole building (Fig.…”

Section: Introductionmentioning

confidence: 99%

Shake Table Tests for the Seismic Assessment of Hollow Brick Internal Partitions

Petrone¹,

Magliulo²,

Manfredi³

2014

Structures Congress 2014

View full text Add to dashboard Cite

The collapse of hollow brick internal partitions is one of the most widely reported nonstructural damage after an earthquake, especially in the European area. Full-scale experimental tests on standard hollow brick partitions are described in the paper. In particular, bidirectional shaking table tests are performed in order to investigate the seismic performance of hollow brick partitions, subjecting the partition simultaneously to interstorey relative displacements in their own plane and accelerations in the out of plane direction. A steel test frame is properly defined in order to simulate the seismic effects at a generic building storey. A set of five couples of accelerograms are selected matching the target response spectrum provided by the U.S. code for nonstructural components in order to investigate a wide range of seismic input. Three damage states are considered in this study and correlated to an engineering demand parameter, i.e. the interstorey drift ratio, through the use of a damage scheme. The tested specimen exhibits significant damage for 0.3% interstorey drift and extensive damage for drift close to 1%. The correlation between the dynamic characteristics of the test setup, in terms of damping ratio and natural frequency, and the recorded damage is shown.

show abstract

Neoprene–concrete friction relationships for seismic assessment of existing precast buildings

Cited by 58 publications

References 1 publication

The Emilia Earthquake: Seismic Performance of Precast Reinforced Concrete Buildings

The Emilia Earthquake: Seismic Performance of Precast Reinforced Concrete Buildings

Cyclic shear tests on RC precast beam-to-column connections retrofitted with a three-hinged steel device

Shake Table Tests for the Seismic Assessment of Hollow Brick Internal Partitions

Contact Info

Product

Resources

About