Structure Design And Study On The Performance Of Eco-permeable Asphalt Pavement

Shape and structure of footbridge tend diversification in recent years,the steel structure footbridge space span is large,diverse,complex structure,the installation construction technology put forward higher request,have to be very careful in analyzing and comparing various construction plan,according to the engineering practice,comprehensive consideration of various factors,select solution meets the requirements.Paper combined with the engineering example,studied the pedestrian bridge steel structure installation technology,has good application value.Another paper combed the pedestrian bridge surfacing technology,two kinds of structure provides ecological concrete pavement with good application cases.The main research content includes the following sections:(1)the overall structure of the steel bridge are analyzed,introduced a unique way of large carrying food basket modelling design,combined with the characteristics of steel bridge,determine its construction technology and procedure;(2)through the analysis and comparison,the choice of the crane lifting construction technology,from the construction site preparation,processing components production and transport,steel truss components are installed in many aspects the bridge in the hoisting method was studied.Using the finite element software Midas civil12012 to steel pipe and ring plate internal force and stress calculation,through the change of steel pipe specifications,and node plate to ensure the strength,stability and deflection can satisfy the requirements of specification.To ensure the pedestrian bridge construction method is feasible.Analyses the welding construction,mainly including welding method,material and process.(3)the performance of colored bituminous concrete and permeable concrete raw material were tested,permeable concrete was determined by the formula to calculate the proportion of raw materials.Respectively on the compressive properties of various kinds of concrete was tested.The contrast analysis of the steel structure footbridge colored asphalt concrete pavement and diffuse water bridge permeable concrete pavement construction tech.The construction technology of steel structure footbridge design research,helps to deepen understanding of the construction technology of the same kind of engineering structure,the structure for the future construction engineering construction to provide certainreference significance.Of colored asphalt concrete and permeable concrete pavement technology research,has the vital significance for the promotion of ecological pavement technology.