Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 27 for “"progressive collapse"”.
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An overview of progressive collapse in structural systems
… considered in the design of structures so that progressive collapse can be prevented. Building collapses such as the Ronan Point, Alfred P. Murrah, and World Trade Center have shown the catastrophic nature of progressive collapse and with an increasing trend towards more terrorist action in the …
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Parametric analysis of progressive collapse in high-rise buildings
Progressive collapse has become a topic of interest in recent years leading to a greater focus on the resilience of structures. The propagation of a local failure can become catastrophic and lead to multiple deaths, injuries and destruction of property. These types of events have been predominant …
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Dynamic amplification factor for moment resisting frames in progressive collapse
Progressive collapse has been a prevalent research topic since a gas explosion caused the collapse of the Ronan Point apartment building in 1968. Progressive collapse occurs when an instantaneous loss of a supporting element causes failure in adjacent members leading to a large scale collapse of …
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Evaluation of post punching capacity of flat plates under progressive collapse
This research investigates the post-punching resistance of flat-plate buildings without continuous bottom reinforcement. An overview on both the historical development of the analytical theories of punching mechanisms and post punching mechanisms as well as the evaluation of post punching capacity …
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Spatial distribution of dynamic amplification in progressive collapse analysis of building frames
… building and structures more efficient under the progressive collapse where one can only use only the Linear Static Analysis and times the results by the DAF instead of using more complex Linear Dynamic Analysis. It is suggested in the code that Dynamic Amplification Factor should be 2 to account …
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Experimental and theoretical evaluation of progressive collapse capacity of reinforced concrete framed structures
Progressive collapse is a situation when local failure is followed by collapse of adjoining members, which in turn causes global collapse, threatening life. Local failure of a vertical load carrying member, can be caused by abnormal loading such as explosion, bombing, sudden vehicle impact and …
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Enhancing Progressive Collapse Resistance of Steel Building Frames Using Thin Infill Steel Panels
<p>Progressive collapse occurs when damage from a localized first failure spreads in a domino effect manner resulting in a total damage disproportionate to the initial failure. Recent building failures (e.g., World Trade Center twin towers) highlight the catastrophic outcome of progressive …
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The design and retrofit of buildings for resistance to blast-induced progressive collapse
… of buildings is adequate protection against progressive collapse in any unforeseen event. In the past, this has been achieved to a limited extent through exterior barriers, which help thwart efforts to directly impact the building, and thus minimize damage. With the emergence of structural …
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Progressive Collapse Assessment of Steel and Concrete Composite Structures Subjected to Extreme Loading Conditions
… removed column on the structural behaviour. The collapse of central, lateral and corner columns were investigated in order to understand the load transfer mechanism, the requirement of joint ductility and the influence of the concrete slab on the development of alternate load paths. Both …
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Resistência última de navios e plataformas danificados por colisões
… failure, in some cases, can develop into the progressive collapse of other structural elements and generate catastrophic consequences. Offshore collisions increase the risk of extreme failure. With increasing demand for safety at sea and protection of the environment, there is a strong …
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Structural Robustness of Long-span Cable-Supported Bridges
… Additionally, recent long-span cable-supported collapse examples show that many bridges suffered progressive collapse when local damage occurred, and they are highly vulnerable to severe damages in the event of a localized failure. However, the traditional design approaches are unable to provide …
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The World Trade Center disaster : Analysis and recommendations
… many occupants to escape, but eventually collapsed to the ground. Much research has been done to determine the precise mechanisms of collapse, but there is not yet a consensus. This thesis explores and summarizes the leading theories to date, with particular emphasis on the ongoing …
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Beam Mechanism Failure in Multistory Steel Frame Structures
… that building structures are not in danger of collapse, so analyses always include safety factors that create redundant yet materially inefficient buildings. This has been common practice for most of structural history, but today, growing concerns for carbon emissions force designers to cut …
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Simulação do colapso progressivo da seção mestra de um navio militar devido à flexão longitudinal
… at structural efficiency, this work analyzed the progressive collapse of the midship of a military vessel due to longitudinal bending designed by standard. After the validation of the boundary conditions and the analysis of the midship section, we obtained the percentage differences between the …
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Seismic Evaluation of Reinforced Concrete Columns and Collapse of Buildings
… buildings are vulnerable to severe damage or collapse due to their low lateral displacement capacity and rapid degradation of shear strength during strong ground motions. Typically, columns in such buildings lack adequate strength and ductility in reverse cyclic loading and experience brittle …
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Application and analysis of stiffened side shell panel failure for naval patrol craft
… detailing static and dynamic shipboard loads, progressive collapse behavior, and global causes of hull strength reduction. Locally, it examines stiffened panel failure modes due to axial loading through a comparison analysis with consideration for sources of panel strength loss. Finally, this …
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Parametric analysis of resilient design of steel truss bridges
… in recent years, which has been triggered by the progressive collapse of structures in the past. Structural failure due to the lack of resilient design has been particularly prevalent in bridges. The failures have been results of a variety of factors that the bridges have been subjected to. The …
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Retrofitting unreinforced concrete masonry to resist tornado loading
… or failure of just one wall can lead to the progressive collapse of the entire structure. The need to reinforce these systems is large, but retrofitting with conventional steel reinforcement is time consuming and costly; however, externally bonded Fiber Reinforced Polymer (FRP) composites …
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Large-scale testing of a steel-concrete composite floor system under column loss scenarios
Large-scale floor system tests concluded a collaborative research project that studied the structural integrity of steel gravity framing systems composed of steel beams and girders with composite concrete slab on steel deck. Steel simple beam-column connection tests were conducted at the University …
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Behavior and performance of steel moment-framed buildings subject to dynamic column loss scenarios
Progressive or disproportionate collapse occurs when localized structural damage leads to widespread collapse or failure of a structure. Although the loss of any structural component in a building has the potential to initiate progressive collapse, structural columns in steel buildings are …
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