Skew Continuous Small Box Girder Bridge Transverse Distribution Coefficient Of Research

The computational transverse distribution coefficient method applied in simply supported beam bridge is very skilled,but load transverse distribution coefficient of the theoretical calculation of skew continuous girder bridge still do not have a simple and practical method. Based on the characteristics of Skew continuous small box girder bridge,through the establishment of space finite element model, research the regulation of the load transverse distribution,analyze the factors influencing the load transverse distribution coefficient, put forward the practical calculation method for the suitable skew continuous small box girder bridge load transverse distribution coefficient.which combined with the actual bridge test verifies the feasibility of this method, the main content of this paper is as below:1.Introduce simply-supported skew girder bridges and continuous skew girder bridge load transverse distribution coefficient of the theoretical calculation method, spatial numerical method to calculate the load transverse distribution coefficient,and analyze the influence factors to the simply-supported skew girder Bridges and continuous skew girder bridge internal force.2.Establishing and analyzing the finite element model get the regulation of the skew continuous small box girder bridge load transverse distribution;Analysis the factors of oblique Angle,span,the number of longitudinal beam, wide span ratio,the number of cross diaphragm factors such as the impact on the load transverse distribution coefficient,obtained oblique Angle and span of skew continuous small box girder bridge load transverse distribution coefficient of influence is significant.3.Based on the impact of the sensitive factors (span and oblique Angle) on the load transverse distribution coefficient,span and Angle and load transverse distribution coefficient of linear fitting and study its inherent regulations, put forward the practical calculation method for the suitable skew continuous small box girder bridge load transverse distribution coefficient,for different quantity of longitudinal beams across and fulcrum of load transverse distribution coefficient are studied respectively.By measuring the load transverse distribution coefficient of real bridge,and comparing with the calculation method,proved this practical method reasonable and feasible.