Experiment And Analysis Of The Circular Hole Castellated Beam

This paper presents a manufacture and calculating method for castellated beams. According to the method, three beams are designed and tested, the detailed and trustworthy experimental data are obtained. In comparison of the castellated beam with the circular hole castellated beams during the process, that the yield of load and the strength limit for the latter are higher than the former is verified. Meanwhile, according to the reduced theoretic of the open-web truss, the strength simplification computational method are proposed, and in comparison of the theoretical calculating value with the tested one and the behavior analysis of the tested beams during the process, the hypothesis and the theory of the beam are verified and the stress distribution of the circular hole castellated beam is also obtained. Thirdly, this paper presents deflection analysis and the approximate practical formula is put forward. Finally, by the analysis of the highness of beam-bridge, the most dangerous section and the abutment construction of the circular hole castellated beam, the design and calculating method of thebeam is given to promote the application of the beam.