Large Span Steel Truss Construction Method Optimization And Technology Research

With China’s rapid economic growth and modernization degree rise ceaselessly, tomake the application of large span buildings have been got hitherto unknowndevelopment, thus it also has put forward higher requirements for the construction oflarge span buildings. In addition to solve the theory question of design and developmentfor large span structure, we must also pay special attention to solve the constructionorganization and design issues. Due to the level of scientific development, there is anincreasing number of new idea, new method, new technology, the optimization ofconstruction plans will directly affect project cost, quality and schedule and otherimportant factors. Aim of optimization is to use the scientific method, with a minimumof labor obtain maximum social and economic benefit. So the problem is very necessaryto research. The main contents of this article are:1, Research status of the combination of Chinese and foreign large span steelstructure, summarizes its concept and characteristics, a detailed discussion of commonlyused in large span steel structure construction technology of the construction plan,methods and key technical points, supplemented by examples, intended for theconstruction process to choose the correct construction method provides theoreticalfoundation and practical reference.2, It is based on systems engineering as the foundation, to make detailed technicaland economic analysis for large span steel truss structure construction project throughthe project example, to establish the index system of the large span steel structureconstruction scheme.3, Through Analysis of a variety of commonly used optimization method, combined with the advantages and disadvantages of various methods and engineeringexamples, using grey relevance and Vague set to set up a comprehensive evaluationmathematical model, in which Vague set is a promotion of Fuzzy set, and it has twodegree of membership, to make the evaluation more reasonably.4, In order to treatment of qualitative and quantitative indicators is scientific andreasonable, it uses set value statistics of the probability theory, and entropy calculationto calculate the weight of each index.5, Assemble optimization methods to discuss arrange, and finally gain the wholeconsequence of estimate.6, In order to convenience of solve the questions, it use Matlab language program,to achieve the ultimate purpose of the rapid optimization of large span steel structureconstruction scheme.Through analysis of practical engineering shows that, the mathematical model hasstrong applicability and integrative as the basis of the mature theory, its computationalmethod is simple and it has powerful identification capability, evaluation result agreeswell with the engineering practice, in the optimization of construction scheme selection,application of this model has important application value and broad applicationprospects. This article reviews some of the research results, for while taking intoaccount the quality, cost, schedule, resources, open up a new path, providing a newmeans. At the same time, the method also has a certain referential significance for otherwork of comprehensive evaluation.