Reseach On Structural Behaviour Of Orthotrophic Steel Deck Of Qingcaobei Changjiang Bridge

Orthotropic steel bridge decks have a more prominent because of its advantages arewidely used in various countries, but because of the structure and the force is morecomplex, with a variety of operators have built bridges, all kinds of fatigue failureproblems have emerged. In many foreign countries to implement a long-termmonitoring bridge or full-scale model test, thus orthotropic steel bridge decks to studythe mechanical properties, but the mechanical characteristics of the domestic orthotropicsteel bridge decks of a lack of experimental data accumulation. This article will back themeasured stress data based on the Yangtze River Bridge bridge deck in order to studyits grass Fuling force performance.The bridge has been a key part of the stiffening beam corresponding sensorinstalled after the opening of a large number of measured stress data available;simultaneously simulated using ANSYS finite element software is loaded on the vehicleload orthotropic steel panels, typical details of the calculation of the stress; Finally, acomprehensive analysis of the measured data and theoretical data, summarize themechanical characteristics of orthotropic steel panel. The paper also compares thedifferent roof thickness, different U-shaped longitudinal rib thickness diaphragms ofdifferent thickness diaphragms of different height, different diaphragms arc gap size,etc. as well as different deck pavement layer the degree of influence of each structuraldetails of the stress, and the analysis of the effective ways to reduce stress on therelatively reliable.Thesis results show that increasing the thickness of the U-shaped longitudinal ribsis to reduce the U-shaped stiffening bridge deck in the U-shaped longitudinal rib andthe most effective way to transverse bulkhead connection stress; Increased thicknessand increased U-shaped roof longitudinal rib thickness, can effectively reduce stresspanel with U-shaped longitudinal rib joints U-shaped stiffening steel bridge panel;increasing the thickness ratio increases transverse bulkhead panel thickness and growthlarge U-shaped longitudinal ribs is more effective in reducing the thickness of theU-shaped stiffening diaphragms bridge deck in connection with the panel of stress;Increasing the thickness of the separator is to reduce the cross diaphragms curved notchstress surest way; transverse bulkhead height of700, can greatly reduce the stress of the U-shaped longitudinal ribs and transverse bulkhead junctions, on the whole forceorthotropic bridge deck is very favorable; diaphragms arc gap size of not less than25band h is80, on the steel deck is the force is the most advantageous; Bridge deckpavement when compared to when there is no pavement and can improve the structureof the force; increased elastic modulus of pavement to improve the force of the bridgedeck to a certain extent, but not very obvious; pavement increase in thickness of thebridge deck is to reduce the stress is more effective method.