Search results for "Progressive collapse"

showing 5 items of 5 documents

Failure by corrosion in PC bridges: A case history of a viaduct in Italy

2016

Purpose The paper illustrates a viaduct collapse due to corrosion phenomena. Moreover, a contribution to the issues related to both the control of existing structures and design methods to be followed for the construction of new buildings is provided. Design/methodology/approach The objectives were achieved by in situ observations and numerical analyses. The effects of corrosion phenomena are investigated, and the progressive collapse analysis is provided to be helpful in this case. Findings The damages induced by corrosion phenomena have caused the collapse of the viaduct taken in to account. The performed numerical analyses were able to reproduce the effects of corrosion in terms of redu…

EngineeringMonitoringProgressive collapse analysi0211 other engineering and technologiesCollapse020101 civil engineering02 engineering and technology0201 civil engineeringlaw.inventionCorrosionPrestressed concretelaw021105 building & constructionForensic engineeringMechanics of MaterialViaductPractical implicationsCivil and Structural EngineeringMonitoring Planbusiness.industryCollapse Corrosion Monitoring Prestressed concrete Progressive collapse analysis Viaduct Civil and Structural Engineering Mechanics of Materials Mechanical EngineeringMechanical EngineeringStructural engineeringProgressive collapse analysisStrength of materialsCorrosionSettore ICAR/09 - Tecnica Delle CostruzioniMechanics of MaterialsPrestressed concretebusiness
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LONG-TERM STRUCTURAL DEFICIENCIES IN A MAT FOUNDATION ON CLAY SOIL

2013

A 3-story building with a mat foundation consisting of a slab on a grid of grade beams performed poorly on clay soil. Cracking of the slab became rogressively worse as a result of the incorrect esign and fluctuations in the groundwater pressure under the foundation. The cyclic presence and absence of water rusted the steel reinforcement, and the sulfates in the clay soil caused formation of ettringite in the concrete. Plastic hinges formed in the slab and settlements occurred, causing damage to the beams. The situation is still in progress and may lead to the collapse of the structure under normal service conditions. The geotechnical and structural investigations performed to survey and ass…

Geotechnical investigationMat foundation Concrete slab Progressive collapse Differential settlements Soil-water movement.Mat foundationcrackingFoundation (engineering)Progressive collapsesoil water movementBuilding and Constructionprogressive collapsegeotechnical investigationsCrackingSettore ICAR/09 - Tecnica Delle CostruzioniShallow foundationdifferential settlementsSoil waterSlabMat foundation concrete slab progressive collapse differential settlements soil water movement cracking geotechnical investigationsGeotechnical engineeringSafety Risk Reliability and Qualityconcrete slabGroundwaterGeologyCivil and Structural Engineering
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Macroelement Model for the Progressive-Collapse Analysis of Infilled Frames

2021

A new multistrut macromodel for the analysis of the progressive-collapse response of infilled reinforced concrete (RC) frames is presented in this paper. The model consists of three struts: two outer infinitely rigid and resistant struts and one inner fiber-section strut. The inclination of the struts as well as the stress-strain response are modulated by two parameters that are obtained by means of analytical correlations provided in the paper. The latter link the geometric and mechanical properties of an infilled frame to the geometric configuration and mechanical response of the equivalent strut model. This confers the model the capability to adapt to consider different collapse configur…

Infilled frames; OpenSees; Progressive collapse; Reinforced concrete; RobustnessInfilled framesbusiness.industryMechanical EngineeringOpenSeesProgressive collapse0211 other engineering and technologies020101 civil engineering02 engineering and technologyBuilding and ConstructionProgressive collapse analysisStructural engineeringReinforced concrete0201 civil engineeringInfilled framesReinforced concreteSettore ICAR/09 - Tecnica Delle CostruzioniMechanics of Materials021105 building & constructionGeneral Materials SciencebusinessRobustnessGeologyCivil and Structural Engineering
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Effect of the Joint Strength on the Performance of Ordinary Moment-resisting Frames Under a Progressive Collapse Situation

2020

Moment (mathematics)VDP::Teknologi: 500Computer sciencebusiness.industryProgressive collapseStructural engineeringbusinessJoint (geology)
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Effect of progressive collapse of central column on the push-down response of two-span beam-column substructures

2021

Abstract In this paper, a simplified model is proposed for hand calculation of the push-down curve of reinforced two-span beam-column substructures with the mid-span column subjected to a vertical load inducing progressive collapse response. The model takes into account the flexural, arch and catenary strength mechanisms and the axial stiffness of RC compressed columns. The model was validated against experimental data available in the literature. The expressions derived, in a closed form, were useful for hand calculation of push-down responses and robustness evaluation of RC framed structures. The derived explicit expressions can be applied in a step-by-step manner for tracing nonlinear be…

business.industryStiffnessProgressive collapseStructural engineeringSpan (engineering)Nonlinear systemFlexural strengthRobustness (computer science)CatenarymedicineArchmedicine.symptombusinessCivil and Structural EngineeringMathematicsEngineering Structures
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