本文選題：斜拉橋 + 仿真計(jì)算��； 參考：《長(zhǎng)安大學(xué)》2014年碩士論文

【摘要】：隨著材料科學(xué)的發(fā)展，結(jié)構(gòu)計(jì)算方法和分析手段的進(jìn)步，以及施工方法和工藝的創(chuàng)新，斜拉橋在二十世紀(jì)九十年代迅速興起。如今，斜拉橋已經(jīng)成為橋梁建設(shè)中不可或缺的一種橋型。然而斜拉橋?qū)儆诟叽纬o定的柔性結(jié)構(gòu)，施工過程與成橋狀態(tài)具有極強(qiáng)的相關(guān)性，必然給橋梁結(jié)構(gòu)帶來復(fù)雜的內(nèi)力變化，這些特點(diǎn)使得斜拉橋的施工控制分析成為重要的研究課題。本文在學(xué)習(xí)和總結(jié)前人研究工作的基礎(chǔ)上，以榆林市朝陽(yáng)大橋?yàn)楣こ瘫尘埃⒏鶕?jù)設(shè)定好的施工工序?qū)υ摌蚴┕み^程進(jìn)行了全過程仿真計(jì)算，提出了針對(duì)該橋的主要控制參數(shù)。并在仿真結(jié)果的基礎(chǔ)之上對(duì)該橋的各階段施工進(jìn)行了跟蹤實(shí)測(cè)。將施工實(shí)測(cè)參數(shù)與計(jì)算理論值進(jìn)行了對(duì)比，對(duì)施工過程中的主要控制參數(shù)進(jìn)行了指導(dǎo)。 論文首先是總結(jié)了國(guó)內(nèi)外斜拉橋的發(fā)展史；斜拉橋目前的施工控制現(xiàn)狀。在閱讀了大量文獻(xiàn)后，總結(jié)出斜拉橋施工控制的定義、任務(wù)以及內(nèi)容，指出了斜拉橋施工控制的首要問題就是對(duì)全橋進(jìn)行仿真計(jì)算。為使仿真計(jì)算的結(jié)果更為準(zhǔn)確合理，在仿真計(jì)算中需要考慮影響橋梁施工控制的諸多因素。因此，論文對(duì)影響橋梁施工控制的因素進(jìn)行了探討，并且就斜拉橋施工控制常用的兩種結(jié)構(gòu)分析方法（正裝、反裝）進(jìn)行了討論。 在明確了施工控制計(jì)算方法后，討論了斜拉橋各個(gè)構(gòu)件在施工控制仿真分析過程中的模擬方法。利用這些分析方法，針對(duì)朝陽(yáng)大橋，采用橋梁工程軟件MIDAS-CIVIL，對(duì)其建立三維模型，，進(jìn)行整個(gè)施工過程模擬計(jì)算分析。在施工控制仿真計(jì)算分析中，針對(duì)該橋的施工特點(diǎn)建立了合理的仿真計(jì)算模型，即在模擬斜拉橋支架施工時(shí)可采用只受壓?jiǎn)卧M(jìn)行模擬，鋼管混凝土橋塔可以采用聯(lián)合截面的方法進(jìn)行模擬。采用這種方法可以更為真實(shí)的模擬出該部分橋梁構(gòu)件的實(shí)際狀態(tài)。并對(duì)施工控制仿真計(jì)算結(jié)果進(jìn)行了詳細(xì)分析；最后通過施工控制實(shí)測(cè)與監(jiān)測(cè)結(jié)果和成橋后荷載試驗(yàn)結(jié)果進(jìn)一步驗(yàn)證了施工控制的方法和工藝是合理的，可實(shí)現(xiàn)的，同時(shí)又是簡(jiǎn)單易行的，也是可以推廣的；也充分證明本文所采用的計(jì)算方法的準(zhǔn)確性及合理性。該研究結(jié)果對(duì)同類斜拉橋施工控制具有的參考作用。
[Abstract]:With the development of material science, the progress of structural calculation method and analysis method, and the innovation of construction method and technology, cable-stayed bridge rises rapidly in 1990s. Nowadays, cable-stayed bridge has become an indispensable bridge type in bridge construction. However, cable-stayed bridge is a kind of flexible structure with high degree of statically indeterminate, and the construction process has a strong correlation with the state of the completed bridge, which will inevitably bring complex internal force changes to the bridge structure. These characteristics make the construction control analysis of cable-stayed bridge become an important research topic. On the basis of studying and summarizing the previous research work, taking the Chaoyang Bridge in Yulin City as the engineering background, and according to the established construction procedure, the whole process simulation calculation of the bridge construction process is carried out, and the main control parameters of the bridge are put forward. On the basis of the simulation results, the construction of the bridge in various stages has been tracked and measured. The measured construction parameters are compared with the calculated theoretical values, and the main control parameters in the construction process are guided. Firstly, the paper summarizes the development history of cable-stayed bridges at home and abroad, and the current construction control status of cable-stayed bridges. After reading a lot of literature, the paper summarizes the definition, task and content of construction control of cable-stayed bridge, and points out that the most important problem of construction control of cable-stayed bridge is to simulate the whole bridge. In order to make the simulation results more accurate and reasonable, many factors affecting the bridge construction control should be considered in the simulation calculation. Therefore, the paper discusses the factors that affect the bridge construction control, and discusses two common structural analysis methods (formal, reverse) for cable-stayed bridge construction control. After defining the calculation method of construction control, the simulation method of each component of cable-stayed bridge in the process of construction control simulation analysis is discussed. By using these analysis methods, the 3D model of Chaoyang Bridge is built by using the bridge engineering software MIDAS-CIVIL.The whole construction process is simulated and analyzed. In the construction control simulation calculation and analysis, according to the construction characteristics of the bridge, a reasonable simulation calculation model is established, that is, only the compression unit can be used to simulate the construction of the cable-stayed bridge support. Concrete-filled steel tubular (CFST) bridge tower can be simulated by the method of joint section. This method can be used to simulate the actual state of this part of the bridge component more realistically. The simulation calculation results of construction control are analyzed in detail. Finally, the method and technology of construction control are proved to be reasonable and feasible through the measured and monitoring results of construction control and the results of post-bridge load test. At the same time, it is simple and easy to use, and can be popularized, and the accuracy and reasonableness of the calculation method used in this paper are fully proved. The results are useful for the construction control of similar cable-stayed bridges.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.27

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