Authors: Published: 28 Sep 2015


Through analyzing the basic components of the trumpet interchange and actual situation of domestic construction, this paper studied the alignment optimization of the A and B ramps in the A type trumpet interchanges. Taking curvature chart and "BET algorithm" as the basis of the interchange ramp alignment model and according to the calculation methods of plane alignment, this paper identified design variables and the final form of interchange ramp alignment model. After selecting five evaluation indexes and quantifying them, this paper put forward simplified objective function of interchange ramp alignment optimization based on membership functions. Referencing the method of basic genetic algorithm genetic coding, this paper determined the value range of alignment elements and the coding. The results show that, in the simplified engineering conditions, optimal interchange alignment with GA could solve the problem of parameters selecting and schemes evaluation more efficiently than the traditional methods.
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