Search results for " pushover analysis"

showing 5 items of 5 documents

Influence of column shear failure on pushover based assessment of masonry infilled reinforced concrete framed structures: A case study

2017

Structural frames, constructed either of steel or reinforced concrete (RC), are often infilled with masonry panels. However, during the analysis of the structural frames, it has become common practice to disregard the existence of infills because of the complexity in modeling. This omission should not be allowed because the two contributions (of infills and of frames) complement each other in providing a so different structural system. The use of different modeling assumptions significantly affects the capacity as well as the inelastic demand and safety assessment. In specific, the adoption of equivalent diagonal pin-jointed struts leaves open the problem of the evaluation of the additional…

Local shear action; Masonry infill wall panels; Pushover analysis; RC frames; Civil and Structural Engineering; Geotechnical Engineering and Engineering Geology; Soil ScienceEngineeringDiagonalStructural system0211 other engineering and technologiesRC frameSoil Science020101 civil engineering02 engineering and technology0201 civil engineeringGeotechnical engineeringLocal shear actionRC framesMasonry infill wall panelsCivil and Structural Engineering021110 strategic defence & security studiesbusiness.industryMasonry infill wall panelRc framesStructural engineeringMasonryReinforced concreteGeotechnical Engineering and Engineering GeologyShear (geology)Pushover analysiAxial forcebusinessPushover analysis
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Il recupero parziale di opere in muratura di interesse storico in zona sismica

2011

Masonry structures seismic improvement pushover analysis reinforced concrete structures
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The multiple slope discontinuity beam element for nonlinear analysis of RC framed structures

2018

The seismic nonlinear response of reinforced concrete structures permits to identify critical zones of an existing structure and to better plan its rehabilitation process. It is obtained by performing finite element analysis using numerical models classifiable into two categories: lumped plasticity models and distributed plasticity models. The present work is devoted to the implementation, in a finite element environment, of an elastoplastic Euler–Bernoulli beam element showing possible slope discontinuities at any position along the beam span, in the framework of a modified lumped plasticity. The differential equation of an Euler–Bernoulli beam element under static loads in presence of mul…

PhysicsDiscretizationDifferential equationMechanical EngineeringMathematical analysisSlope discontinuity Nonlinear pushover analysis Lumped plasticity Plastic hinge020101 civil engineering02 engineering and technologyPlasticityClassification of discontinuitiesCondensed Matter PhysicsFinite element method0201 civil engineeringNonlinear systemSettore ICAR/09 - Tecnica Delle Costruzioni020303 mechanical engineering & transports0203 mechanical engineeringMechanics of MaterialsBending momentSettore ICAR/08 - Scienza Delle CostruzioniStiffness matrix
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Tecniche di analisi statica non lineare multimodale per strutture intelaiate

2015

Viene presentata una panoramica delle più efficienti tecniche di analisi statica non lineare, evidenziando i progressi fatti nella formulazione di procedure con profili di carico adattivi multimodali, finalizzati alla valutazione della risposta di strutture a comportamento fortemente non lineare. Vengono poi presentate le diverse procedure che consentono di analizzare il comportamento di strutture irregolari in altezza o con grandi periodi di vibrare, nella quale la risposta è fortemente influenzata dai modi superiori. In quest’ambito viene evidenziato il ruolo della procedura Modal Pushover Analysis, che risulta fra le più efficienti nel riprodurre il comportamento di strutture fortemente …

Settore ICAR/09 - Tecnica Delle CostruzioniPushover Modal Pushover Analysis Non linear Correlation coefficients hysteretic oscillators.
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Seismic response of steel frames with reduced beam sections

2003

This study concerns the effectiveness of weakening on the beams of fully and partially restrained connection steel frames in order to locate plastic hinges far from the joints. Two types of non-linear analysis, for geometry and constitutive law are developed: static pushover analysis, in which the structure is subjected to constant vertical loads and to horizontal loads linearly increasing up to collapse; and incremental dynamic analysis, in which the structure is subjected to uniformly scaled ground motions. Applications for four-bay frames with three and nine stories designed according to the EC3 code and for Italian 1st-category seismic areas are developed in order to evaluate the influe…

Settore ICAR/09 - Tecnica Delle Costruzionisteel buildings seismic protection ductility pushover analysis incremental dynamic analysisSettore ICAR/08 - Scienza Delle Costruzioni
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