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Design Theory and Method Research on Structure to Risist Progressive Collapse

Author: HuangJunHai
Tutor: FuXueZuo
School: Harbin Institute of Technology
Course: Structural Engineering
Keywords: Progressive collapse Dynamic analysis of multiple load path method Initial state Dynamic Response Dynamic elastoplastic time history analysis
CLC: TU375.4
Type: Master's thesis
Year: 2008
Downloads: 254
Quote: 0
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Abstract


Progressive collapse of the structure of the accident loads caused the partial destruction of the structure, and thus triggered the the structure chain reaction led to the destruction spread to other failure Component neighboring structure, the final bearing capacity of the structure of the main loss, resulting in the collapse of the structure of a large range. Progressive collapse can be attributed to two categories: The first category is the Structures under Earthquake into the inelastic deformation instability components, power transmission path failure caused by progressive collapse. The second category is the blocking force transmission path leads to progressive collapse due to impact, explosion, fire, construction design mistakes or vandalism caused the failure of the part of the load-bearing elements. The structure in the event of progressive collapse will cause a significant loss of life and property, and thus how to avoid the structure of the progressive collapse of the engineering community is increasingly concerned about the problem. Europe and the United States and other countries have formulated a progressive collapse design specifications, and has been widely used. The structure of the existing progressive collapse the specification design analysis method to review and summarize, and pointed out that there's some problem. A three-story reinforced concrete frame structure model, multiple load path method of dynamic analysis and anti-progressive collapse of dynamic elastoplastic time history analysis, specific research and analysis to the following: (1) Dynamic analysis of multiple load path method, structures subjected to accidental loads local component failure before the structure is in the initial state of balance. In either a state of equilibrium, the structure is in the status condition exists a certain deformation, the internal force and stiffness, by the load or the boundary conditions change, the structure changes from its initial equilibrium conditions. This article will explore the impact and components of the initial state of the dynamic response due to failure of the component failure time dynamic response and linear dynamic analysis and nonlinear dynamic analysis to compare. (2) the use of ABAQUS dynamic analysis of reinforced concrete frame model structural resistance to progressive collapse under blast loading dynamic elastoplastic analysis, considering the dynamic characteristics of the material to study under blast loading, deformation, stress, injury patterns and components failure mechanism. Some of the main conclusions given in the analysis, and then summarize the structure of measures to prevent the occurrence of progressive collapse, and the work of the topics that will be conducted to further outlook.

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures > Frame
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