Papers by Edoardo Cosenza
Synopsis: Synopsis: Synopsis: Synopsis: Synopsis: The preliminary results of an experimental inve... more Synopsis: Synopsis: Synopsis: Synopsis: Synopsis: The preliminary results of an experimental investigation on under-designed RC square columns are presented in the paper. The seismic upgrade was achieved by combining steel spikes and GFRP laminates. Two parameters are investigated: the lap splice of the longitudinal steel reinforcement and the level of axial load. A comparison between as-built and strengthened columns is
The present paper reviews the fundamental structural response characteristics and technological i... more The present paper reviews the fundamental structural response characteristics and technological issues of composite steel and concrete systems. It assesses the pros and cons of composite structural systems and investigates the efficacy of beam-column members. Design rules for composite constructions are presented and discussed in details in order to get deep insight into their background. Areas of further research are
Journal of Earthquake Engineering, 2008
Among all the possible options to define the seismic input for structural analysis, natural recor... more Among all the possible options to define the seismic input for structural analysis, natural recordings are emerging as the most attractive. Easily accessible waveform databases are available and evidence shows that only a relatively limited number of criteria has to be considered in selection and scaling to get an unbiased estimation of seismic demand. Like many codes worldwide, Eurocode 8
Engineering Structures, 2004
Structural assessment of existing reinforced concrete constructions under gravity loads and seism... more Structural assessment of existing reinforced concrete constructions under gravity loads and seismic actions has a high social and economical impact; actually in many European countries, most of the buildings dates back to 1960s and 1970s and cannot ensure satisfactory seismic response, since many areas have been later classified as seismic or since design has been carried out according to obsolete
Progress in Structural Engineering and Materials, 2000
measures. Summary This article reviews the ground motion parameters that can be assumed as struct... more measures. Summary This article reviews the ground motion parameters that can be assumed as structural and non-structural damage measures. Measures of seismic damage potential based on ground motion records are first described, followed by a discussion of the damage measures relating to simple (linear) and more complex (non-linear) structural responses. The second section reviews the measures of damage phenomena which
Journal of Engineering Mechanics-asce, 1999
Negative bending moments acting in the support regions of continuous composite beams generate ten... more Negative bending moments acting in the support regions of continuous composite beams generate tensile stresses in the concrete slab and compressive stresses in the lower steel profile. As a result the mechanical behavior of these beams is strongly nonlinear even for low stress levels, due not only to the slip at the beam- slab interface, but also to cracking in
Shock and Vibration, 2010
Experimental estimation of damping is currently not a comprehensively solved problem. Although mo... more Experimental estimation of damping is currently not a comprehensively solved problem. Although modal frequencies and mode shapes can be measured confidently and quite easily by means of dynamic tests on civil structures, an accurate identification of damping ratios needs further development. Experimental values can be characterized by large error bounds mainly because damping is strongly influenced by the magnitude of the dynamic response of a structure.
Comparison and optimization of different methods of evaluation of displacements in cracked reinforced concrete beams
Materials and Structures, 1990
... displacements in cracked reinforced concrete beams EDOARDO COSENZA Istituto di lngegneria Civ... more ... displacements in cracked reinforced concrete beams EDOARDO COSENZA Istituto di lngegneria Civile, University of Salerno, Penta di Fisciano 84080, Italy CARLO GRECO Istituto di Tecnica delle Costruzioni, University of Naples, P. le V. Tecchio, Naples 80125, Italy ...
Journal of Constructional Steel Research, 2001
Reinforcing steel actually available on the European market is generally characterised by a good ... more Reinforcing steel actually available on the European market is generally characterised by a good strength, but also by reduced ductility; on the other hand European codes concerning concrete and composite structures point out the importance of using reinforcing steel with sufficient ductility.
Journal of Composites for Construction, 2002
A concise state-of-the-art survey of fiber-reinforced polymer ͑also known as fiber-reinforced pla... more A concise state-of-the-art survey of fiber-reinforced polymer ͑also known as fiber-reinforced plastic͒ composites for construction applications in civil engineering is presented. The paper is organized into separate sections on structural shapes, bridge decks, internal reinforcements, externally bonded reinforcements, and standards and codes. Each section includes a historical review, the current state of the art, and future challenges.
Case Study: Seismic Retrofitting of a Medieval Bell Tower with FRP
Journal of Composites for Construction, 2007
Seismic retrofitting of monument structures requires compliance with restrictive constraints rela... more Seismic retrofitting of monument structures requires compliance with restrictive constraints related to the preservation of original artistic and structural features. Any conceived intervention must achieve structural performance yet still respect the appearance and ...
Journal of Composites for Construction, 2007
Column jacketing with fiber-reinforced polymer ͑FRP͒ composite materials has been extensively inv... more Column jacketing with fiber-reinforced polymer ͑FRP͒ composite materials has been extensively investigated in the last decade to address the issue of seismic upgrade and retrofit of existing reinforced concrete ͑RC͒ columns. Researchers have mainly focused their attention on solid columns, while very little research has been done on hollow columns strengthened with FRP. To study the behavior of noncircular hollow cross sections subjected to combined axial load and bending and to contribute to the comprehension of the resistant mechanisms present in FRP confinement, a total of seven specimens have been tested. The present work is the first step in a broader endeavor aimed at evaluating the benefits generated by a FRP wrapping, computing ͑P-M͒ interaction diagrams for hollow columns confined with FRP, and defining design criteria for the strengthening of these elements using composite jackets. The theoretical analyses will also assess under which conditions the standard approaches for columns with solid cross sections could be extended to the case of hollow columns.
Earthquake Spectra, 2004
The authors inspected approximately 300 primary and secondary schools in 87 municipalities of Mol... more The authors inspected approximately 300 primary and secondary schools in 87 municipalities of Molise. About 40% were masonry structures, 40% were reinforced concrete (RC) frame structures, and the remaining 20% were a variety of structures. Almost all of them were built without seismic criteria and most had no more than three stories. In this paper we compare the distribution of the damage with the vulnerability classes. The collapses in San Giuliano di Puglia highlight the comparative vulnerabilities related to structural types, construction phases, and location.
Earthquake Engineering & Structural Dynamics, 2006
The study presented in this paper addresses the question of which nonlinear demand measures are s... more The study presented in this paper addresses the question of which nonlinear demand measures are sensitive to ground motion duration by statistical analyses of several case studies. A number of single degree of freedom (SDOF) structures were selected considering: (1) four oscillation periods; (2) three evolutionary and non-evolutionary hysteretic behaviours; (3) two target ductility levels.
Earthquake Engineering & Structural Dynamics, 2003
In this paper the e ects of near-fault earthquakes are investigated through the study of paramete... more In this paper the e ects of near-fault earthquakes are investigated through the study of parameters related to both input energy and plastic cycles demand. Based on the results of two di erent regression analyses performed with 128 near-fault and 122 far-ÿeld registrations, respectively, the Cosenza and Manfredi adimensional I d index was found to be the best seismological parameter correlated to the number n and amplitude m of plastic cycles in the vicinity of the source as well as far from it. Analytical formulations for n; m and for the equivalent number of plastic cycles neq are proposed for near-fault and far-ÿeld regions. The study of I d and neq shows the tendency of such parameters to increase as the distance increases.
Composites Part B: Engineering, 2008
Hollow bridge piers are incorporated in tall bridges to maximize the structural efficiency of the... more Hollow bridge piers are incorporated in tall bridges to maximize the structural efficiency of the strengthmass and stiffness-mass ratios. Column jacketing with fiber reinforced polymer (FRP) composite materials has been extensively studied in recent years but it is uncertain how FRP jackets may perform when retrofitting hollow concrete columns since the topic has been little researched.
Composites Part B: Engineering, 2006
The assessment of the effectiveness of the fiber reinforced polymer (FRP) confinement on rectangu... more The assessment of the effectiveness of the fiber reinforced polymer (FRP) confinement on rectangular reinforced concrete (RC) columns with high aspect ratio (wall-like) still represents an unresolved issue. The present paper aims at providing more experimental evidence about the behavior of such members confined with both uni-directional and quadri-directional glass FRP laminates. Particular attention is devoted to issues related to the premature failure of confining fibers experimentally observed in wall-like columns. Test results on nine axially loaded columns are herein presented; emphasis is also given to the analysis of FRP strain profiles along the sides of the cross-section. The analysis of test results highlights that glass FRP (GFRP) confinement could determine significant strength and ductility increases; the discussion of failure modes points out that the failure of GFRP confined wall-like columns is controlled by the shape of the cross-section and occurs at transverse strains in the jacket much lower than those ultimate of the fibers. Theoretical-experimental comparisons are performed using some available models for strength prediction of such members.
Fire resistance of concrete slabs reinforced with FRP bars. Part II: Experimental results and numerical simulations on the thermal field
Composites Part B: Engineering, 2011
Abstract Several building codes are now available for the design of concrete structures reinforce... more Abstract Several building codes are now available for the design of concrete structures reinforced with FRP even if no calculation model taking account of fire conditions has been suggested. Only the Canadian code (CAN/CSA 806-02) provides a design procedure in ...
Bulletin of the Seismological Society of America, 2004
Several of the world's active volcanoes are located near densely populated areas, and therefore t... more Several of the world's active volcanoes are located near densely populated areas, and therefore the seismic hazard associated with preeruptive earthquake activity and its relation to the potential damage of engineering structures should be considered as a part of risk evaluation and management. This is true for Mt. Vesuvius volcano (southern Italy), where several hundred thousand people are exposed to volcanic and related seismic risks. This study investigates the effect of preeruptive seismic activity through the massive simulation of earthquake waveforms in the magnitude, location, and focal-mechanism ranges expected for Mt. Vesuvius seismicity. Synthetics are processed to evaluate the characteristic strong-motion parameters, which are useful for estimating the seismic damage to a built-up environment that would arise from both the maximum expected single event and the cumulative effect of a large number of small events. Synthetic and observed strong-motion parameters for a selected set of recorded earthquakes are compared to validate the modeling approach. The scaling of the simulated peak ground acceleration (PGA) with distance appears to be influenced by earthquake depth, owing to the presence of a sharp velocity discontinuity at shallow depths underneath the Vesuvius area. On the other hand, the hysteretic energy spectrum, related to the plastic behavior of the structures, depends strongly on the b-parameter of the Gutenberg-Richter law (G-R). By varying the G-R law parameters across a reasonable expected range, we observe that the cumulative hysteretic energy is comparable to the values observed at near-source distances during the 1997 Umbria-Marche, Italy, event (M 5.8), which produced serious damage to buildings and infrastructure, although a significant PGA value was not recorded.
REXEL: computer aided record selection for code-based seismic structural analysis
Bulletin of Earthquake Engineering, 2010
... horizontal motion (X and Y) are characterized by the same elastic response spectrum as per ..... more ... horizontal motion (X and Y) are characterized by the same elastic response spectrum as per ... In this case, the selection proceeds in two sub-steps: first, the combinations compatible ... The tolerances and period ranges for average vertical spectral matching may be different from ...
Uploads
Papers by Edoardo Cosenza