The Research And Design Of Interchange Bridge Drawing System

With the rapid development of the domestic road construction, the construction of roadsand bridges is increasing. At present, Interchange curve bridge which has been widely used inhighways and municipal construction, more shaped structure, is very complex and poorregularity. Most of the Design Institute still using manual drawing to complete the overpassbeam design, design inefficiencies, and the automatic drawing of the bridge design has notbeen able to achieve, to become a bottleneck in the bridge design work. Hence, thedevelopment of the computer aided design and drawing system of Interchange curve bridgewill help to raise our country's bridge design level and improve design efficiency to have thevital significance.Through the analysis of the study and application of the bridge design software at homeand abroad, combined with the needs of the bridge design, the proposed for Interchangeshaped structure for the main construction and curve girder bridge CAD system research anddevelopment of ideas and technologies routes. In AutoCAD secondary development ofcommon tools for comparison and analysis, and on the basis of to improve programdevelopment speed and quality, choose the use of.NET API secondary development functionwith the AutoCAD graphics processing capabilities organic integration of the developmentmode. This paper discusses the parametric graphics technology of the basic concepts andprinciples, steps and methods, according to the characteristics of bridge design, puts forwardthe parametric graphics technology to realize the automatic drawing function bridge designthe technical route.This article from the system function requirements and design goal in two aspects of thewhole system are discussed, in order to realize the integration of design drawing as the mainline, through the analysis of the application of the system requirements, is put forward basedon the user interface layer, function module layer and system data layer three-architecturemodel and overall system architecture described in detail. In the interface system model basedon Seeheim GUI design, realization "what you see is what you get" design ideas, obtain arelatively good interaction experience; On the demand, and on the basis of research realized general construction drawing and common reinforced graph design and drawing function, thedrawings for the division level standard function modules, each package object and drawingmethod, improve the code reusability; In data plan design graphic data and take product dataare separate mode, the system only responsible for data storage products, so that can improvethe design data reuse rate, effectively reduce the cycle of project design, greatly reducing thecost of design.The paper effectively Interchange curved girder bridges general structural map anddesign of reinforced automatic drawing, as well as the corresponding number of concreteworks and steel works number of the calculation of statistical functions to solve the problemof drawing, and database design. Practical engineering tests show the system to effectivelysolve the design and drawing of the curved girder bridges shaped structure, improve thequality and efficiency of the design to meet the needs of engineering design.