Large Cantilever Steel - Concrete Composite Beam Analysis And Model Test

Based on the background of a city key construction project枣Hongshan Bridge, the loading characteristics of the deck system consisting of mutirow cantilever in composite structure of steel and concrete is studied in the thesis.Aiming at converting the loading problem in space into the one in plate, the theories of loading distribution along crosswise are applied. The modified formulae derived from the simplified models, the one of which is the continuous beam on the elastic supports, the other is articulated beam, have been established. Being analyzed, the later one is prove more reasonable.In terms of the calculating theories of the composite steel-concrete beam, the elastic analysis and the plastic analysis are expounded systematically. The method of elastic analysis is adopted according to the classification of the cross section. In addition, the calculating methods about the gap of the connectors and the maximum width of crack are discussed in the thesis.Finally, the calculating theory is proved correct by the limited element method and the experimental results.