The Airport At New And Old Pavement Connecting Technology Research

With the continuous development of aircraft and the traffic volume increasing,People are putting forward higher requirements for safety and convenience of air transport,the part of the original already can't satisfy the growing demand at the airport,The reconstruction and extension project of airport has become and a hot spot in civil aviation airport construction in our country.One of the most difficult problem For reconstruction and extension project of airport,solving the connecting part processing is one of the most difficult problem,fault and other diseases,so that the reconstruction and extension project of airport whose connecting part processing technology research is a very important practical significance.In this paper,the author rely on the part of the central south region projects of airport and Beijing 's 1509 engineering examples,Survey and design technology and method of the integrated use of modern airport,respectively to the airport at the original pavement performance evaluation,connecting joint treatment,mechanical response of the pavement,pavement technical indexes and the scheme selection,etc were studied.It focuses on the following aspects of the research work:(1)Through studying the pavement damage condition,pavement roughness and pavement slip resistance and bearing capacity of pavement structure four aspects,combining with engineering practice,illuminates the pavement evaluation theory and method,provide the basis for reconstruction programme choice.(2)Using finite element pavement when the old and new concrete pad is set at convergence at the pavement or not,as well as the surface layer,the base layer material and seams in different modulus of elasticity,the displacement and stress of the pavement changes were analyzed.(3)Using finite element software channel panel thermal analysis,find the location of the pavement to open the maximum amount occurs,the incorporation amount of influence of fly ash on its opening in the concrete.(4)Finally,used the fuzzy multi-objective decision-making system for connecting thefour treatment scheme comparison comprehensive evaluation.This article research conclusion can provide technical decision basis for reconstruction airport projects and support.