Layout Plans of Expressway Communication Pipeline and Parameterized Design of Route Map

Expressway communication pipeline is mainly used for expressway mechanical and electric system optical fiber cable and emergency telephone electric cable installation.The routing scheme of communication pipeline should be chosen reasonably.In addition to the specific design of communication pipeline crossing main construction,there is a lot of work in route map design.The scheme should be determined,and analysis and computation should be carried out according to many specific route general layout plans and longitudinal sections plans.There is still much work of filling computation results in table during drawing.In order to implement the automation of data computation and filling and to parameterize longitudinal section route map,the factors and parameters in route longitudinal section are substituted into vertical curve equation.The mathematical prototype of longitudinal section is derived.Then,BIG language of CCAD is used to complete the parameterized model and database work.In design,if route design factors and parameters and man and hand hole road kilometers numbers are input,the computation and filling of array and longitudinal section route map can be automatically carried out.This shows that parameterized design is very efficient,accurate and highly automatic.