The Load Transverse Distribution Of Research On The Deck Pavement Composite Layer Reinforced Hollow Slab

With the growth in traffic, especially increasing heavy vehicles resultes in severe overloading in recent years, makes the use of the deck performance deteriorated, designes the concrete deck.Design and calculation of the traditional deck is usually overlooked the influence of pavement on the mechanical properties of the structure, but in fact the deck pavement involves in structure of the force, and therefore should be considered the composite effect of the deck pavement in the calculatio.The text researches the force performance of the hollow slab in considering the composite effect of the deck pavement layer.The text analysizes the basic principles of the various calculation methods on the load distribution factors, sets out the basic assumptions,mechanical icons, formula, focuses on reinforced concrete slab considering concrete pavement, the overall structure of the stress state, the basic principle, reaches the calculation equation of the load distribution factors in considering the pavement.On the basis of the reasonable and reliable results using the finite element simulation modeling program Midas Civil, in order to verify the correctness and accuracy of rigid plate method after considering the pavement about transverse load distribution factors, finite element results and rigid plate method results are compared and analyzed, the data agrees well, the transverse load distribution factor is correct with rigid plate method.Combined with the engineering practice, simply-supported hollow slab carries out the loading test, compared with the internal force distribution,the deflection change,the loading effect before and after reinforcement,obtains the influence of the deck pavements on the girders'stress . The deck pavement can effectively improve the deformation properties, one hand is to reduce girder deflection,to make the deflection distribution more uniform and the deflection change curve gently. The deck pavement participates in the girder'stress,reduce the girder flexural moment, greatly improves the main force,makes the girder's flexural moment more average.