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基于圖形流的預(yù)應(yīng)力曲線剛構(gòu)橋命令流自動生成技術(shù)

發(fā)布時(shí)間:2018-07-05 04:57

  本文選題:曲線連續(xù)剛構(gòu) + 懸臂施工; 參考:《石家莊鐵道大學(xué)》2014年碩士論文


【摘要】:預(yù)應(yīng)力曲線連續(xù)剛構(gòu)橋?yàn)閺V泛應(yīng)用于橋梁建造的橋型之一,其構(gòu)造和受力特性復(fù)雜于預(yù)應(yīng)力直線連續(xù)剛構(gòu)橋,常用的施工方法為掛籃懸臂施工。目前橋梁結(jié)構(gòu)設(shè)計(jì)及施工計(jì)算常用的軟件為MIDAS/civil、ANSYS、橋梁博士等,軟件采用菜單或命令流模式完成預(yù)應(yīng)力曲線連續(xù)剛構(gòu)橋懸臂施工的仿真模擬,雖然可以有效的完成計(jì)算,但是模擬過程無法凸顯橋梁結(jié)構(gòu)和懸臂施工的工程特征,使預(yù)應(yīng)力曲線連續(xù)剛構(gòu)橋仿真計(jì)算存在建模效率較低的瓶頸。 圖形流技術(shù)是一種新的建模技術(shù),其建模基礎(chǔ)是功能圖形對象,功能圖形對象是具有自身屬性特征的工程模型的子塊。該技術(shù)通過功能圖形對象的協(xié)同合作建立工程模型,將工程問題的求解轉(zhuǎn)化成功能圖形對象的創(chuàng)建、操作和推演過程,使工程問題求解和工程模型建立過程凸顯實(shí)際工程特征,進(jìn)而減少模型建立過程中不必要的機(jī)械式操作,使工程問題求解清晰、簡單、便捷、高效。 本文在深入研究預(yù)應(yīng)力曲線連續(xù)剛構(gòu)橋的結(jié)構(gòu)、受力、預(yù)應(yīng)力鋼束布置、支座約束、掛籃懸臂施工過程規(guī)劃等特征的基礎(chǔ)上,總結(jié)了以圖形流技術(shù)建立預(yù)應(yīng)力曲線連續(xù)剛構(gòu)橋工程模型的流程。以路橋施工專家系統(tǒng)為開發(fā)平臺,以DELPHI可視化編程平臺為開發(fā)工具,開發(fā)了建立模型過程中用到的功能圖形對象,然后通過這些功能圖形對象的創(chuàng)建、操作、推演實(shí)現(xiàn)了預(yù)應(yīng)力曲線連續(xù)剛構(gòu)橋的懸臂施工模擬,,再利用命令流接口技術(shù)實(shí)現(xiàn)懸臂施工模擬模型向MIDAS命令流的轉(zhuǎn)化。最后通過工程實(shí)例驗(yàn)證圖形流技術(shù)的可行性和高效率。
[Abstract]:Prestressed curved continuous rigid frame bridge is one of the bridge types widely used in bridge construction. Its structure and mechanical characteristics are complicated by prestressed linear continuous rigid frame bridge. The common construction method is hanging basket cantilever construction. At present, the commonly used software for bridge structure design and construction calculation are midas / civili ANSYS, bridge doctor, etc. The software uses menu or command flow mode to simulate the cantilever construction of prestressed curved continuous rigid frame bridge, although it can effectively complete the calculation. However, the simulation process can not highlight the engineering characteristics of bridge structure and cantilever construction, which makes the simulation calculation of prestressed curve continuous rigid frame bridge have the bottleneck of low modeling efficiency. Graphic flow technology is a new modeling technology, which is based on functional graphics object, which is a sub-block of engineering model with its own attributes. In this technology, the engineering model is established through the collaborative cooperation of the functional graphics object, and the solution of the engineering problem is transformed into the process of creating, operating and deducing the functional graphics object, so that the engineering problem solving and the engineering model building process highlight the actual engineering characteristics. Furthermore, it reduces the unnecessary mechanical operation in the process of modeling, and makes the solution of engineering problems clear, simple, convenient and efficient. In this paper, the characteristics of prestressed curved continuous rigid frame bridge, such as structure, force, prestressed steel bundle arrangement, support constraint, cantilever construction process planning, etc., are studied in depth. This paper summarizes the process of establishing the engineering model of prestressed curve continuous rigid frame bridge by graphic flow technology. Taking the road and bridge construction expert system as the development platform and Delphi visual programming platform as the development tool, this paper develops the functional graphics objects used in the process of building the model, and then through the creation and operation of these functional graphics objects, The cantilever construction simulation of prestressed curved continuous rigid frame bridge is realized, and the transfer of cantilever construction simulation model to Midas command flow is realized by using command flow interface technology. Finally, the feasibility and high efficiency of graphic flow technology are verified by an engineering example.
【學(xué)位授予單位】:石家莊鐵道大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:U448.23

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