混凝土框架结构连续倒塌影响因素分析-结构工程专业论文.docxVIP

西安 西安理工大学硕士学位论文 ab abstract I II I III Title: Analysis the reinforced concrete frame structure progressive collapse’s factors Major：Structural Engineering Name： Lijun Yao Signature: Supervisor：Prof.Zhe Li Signature: Abstract Reinforced concrete structure is a structure form to a wide range of application in China; Study on the progressive collapse, at present mainly in the structure is subjected to extreme loads, how to assess and calculate structural progressive collapse resistance capacity. In the reinforced concrete frame structure, the main factors influence the progressive collapse is frame beam and frame column’s reinforcement, concrete strength, sectional height and span, so it is necessary to carry on quantitative analysis of these factors, Obtain the influence of each factor. In order to better analysis the reinforced concrete frame structure progressive collapse’s main factors, this paper takes a cross of three story reinforced concrete frame structure, the middle column failure as the research object, mainly studies the factors as follows: Study on the frame column reinforcement to the progressive collapse affect of bearing capacity and displacement, the quantitative results are given. Found in normal design situations, the reinforcement of frame column has little influence on the progressive collapse capacity; analysis the other factor of frame column and force, obtain the frame column in the progressive collapse, does not play a control role, in progressive collapse the control action is the frame beam. Study on the frame beam affect to the progressive collapse of bearing capacity and displacement. The main analysis is frame beam reinforcement quantity, steel strength, concrete strength, reinforcement position, beam span and beam section height. Obtain the quantity of reinforcement and reinforced strength impact the progressive collapse capacity greatly, but on displacement were a little impact; reinforcement position and concrete strength effect pr