發(fā)布時(shí)間：2018-01-14 11:15

  本文關(guān)鍵詞：巨型框架—核心筒—環(huán)形伸臂桁架超高層結(jié)構(gòu)施工過(guò)程模擬分析　出處：《河北工業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 巨型框架-核心筒-環(huán)形伸臂桁架結(jié)構(gòu) SAP2000 施工過(guò)程模擬 超高層 收縮徐變

【摘要】：由于我國(guó)經(jīng)濟(jì)和技術(shù)的不斷發(fā)展,超高層建筑的使用日益廣泛。在超高層建筑結(jié)構(gòu)當(dāng)中,巨型框架-核心筒-環(huán)形伸臂桁架結(jié)構(gòu)體系的運(yùn)用開(kāi)始普遍,成為現(xiàn)代超高層建筑中使用較多的結(jié)構(gòu)之一。通常超高層結(jié)構(gòu)的研究主要集中于結(jié)構(gòu)自身的力學(xué)特性和設(shè)計(jì)方法,對(duì)于結(jié)構(gòu)的施工過(guò)程研究相對(duì)較少。但是,由于超高層建筑的結(jié)構(gòu)體型復(fù)雜、施工周期長(zhǎng)、施工質(zhì)量要求較高,超高層結(jié)構(gòu)的施工過(guò)程模擬日益受到重視,并且日趨勢(shì)在必行。本文以天津市諾德英藍(lán)國(guó)際金融中心項(xiàng)目為背景,運(yùn)用SAP2000有限元分析軟件對(duì)結(jié)構(gòu)進(jìn)行施工過(guò)程模擬分析,通過(guò)對(duì)比不同因素對(duì)結(jié)構(gòu)施工過(guò)程模擬結(jié)果的影響,分析施工過(guò)程中需要注意的問(wèn)題,為超高層巨型框架-核心筒-環(huán)形伸臂桁架結(jié)構(gòu)的施工提供有益的參考,本文主要進(jìn)行了以下幾項(xiàng)工作:1.對(duì)巨型框架-核心筒-環(huán)形伸臂桁架的整體結(jié)構(gòu),運(yùn)用SAP2000有限元分析軟件進(jìn)行有限元模型的建立,并對(duì)施工過(guò)程分析模型的建立方式和過(guò)程進(jìn)行了敘述,形成了較為完整的施工過(guò)程模擬建模方案。通過(guò)與施工監(jiān)測(cè)數(shù)據(jù)的對(duì)比,驗(yàn)證施工過(guò)程模擬分析模型的正確性,并分析誤差產(chǎn)生的原因。2.對(duì)施工過(guò)程模擬分析的加載方式進(jìn)行理論分析。運(yùn)用有限元模型對(duì)巨型框架-核心筒-環(huán)形伸臂桁架結(jié)構(gòu)進(jìn)行不同加載方式的施工過(guò)程模擬,通過(guò)對(duì)比不同加載方式對(duì)結(jié)構(gòu)豎向位移、豎向位移差以及核心筒豎向應(yīng)力的影響,分析不同加載方式的對(duì)結(jié)構(gòu)施工過(guò)程的影響。結(jié)論表明,精確施工過(guò)程加載法更接近實(shí)際情況,在施工過(guò)程模擬時(shí)應(yīng)采用精確施工過(guò)程加載法。3.從理論上分析筒體領(lǐng)先施工的必要性,分析現(xiàn)有筒體領(lǐng)先施工層數(shù)的計(jì)算方法。運(yùn)用施工過(guò)程模擬不同筒體領(lǐng)先層數(shù),通過(guò)對(duì)比結(jié)構(gòu)的豎向位移和豎向應(yīng)力的不同變化,分析得出筒體領(lǐng)先施工可以有效的減小不同結(jié)構(gòu)的豎向位移差。對(duì)于64層的超高層結(jié)構(gòu),領(lǐng)先施工8-12層較為合理。4.通過(guò)改變桁架連接順序、對(duì)比結(jié)構(gòu)豎向位移,研究施工中較為合理的桁架連接順序;研究塔吊設(shè)備對(duì)結(jié)構(gòu)豎向位移的影響。結(jié)果表明,對(duì)于桁架結(jié)構(gòu)最后連接,桁架結(jié)構(gòu)在施工過(guò)程中連接可以協(xié)調(diào)結(jié)構(gòu)的豎向位移,但會(huì)對(duì)桁架結(jié)構(gòu)產(chǎn)生較大的次生力,需要注意施工過(guò)程中桁架結(jié)構(gòu)的受力問(wèn)題;塔吊設(shè)備對(duì)結(jié)構(gòu)的豎向位移影響不大,可以在施工過(guò)程模擬中進(jìn)行簡(jiǎn)化計(jì)算。5.通過(guò)理論分析收縮和徐變系數(shù)的計(jì)算方法及其對(duì)結(jié)構(gòu)的影響,并在施工過(guò)程模擬計(jì)算中分別考慮收縮和徐變的影響。通過(guò)對(duì)比結(jié)構(gòu)豎向位移和豎向應(yīng)力,得到結(jié)論:在施工過(guò)程模擬分析中,收縮和徐變對(duì)巨型框架-核心筒-環(huán)形伸臂桁架結(jié)構(gòu)的豎向位移和豎向位移差影響較大,所以在進(jìn)行施工過(guò)程模擬時(shí)不應(yīng)忽略其影響,并應(yīng)在施工過(guò)程中充分考慮和減弱收縮徐變帶來(lái)的影響。
[Abstract]:Due to the continuous development of China's economy and technology, the use of super high-rise building is more and more widely. In super high-rise buildings, the use of mega frame core tube - ring cantilever truss structure system to become one of the more common use of modern structure in high-rise buildings. The mechanical properties and design method through study of Chang Chao mainly focused on high-rise structure the structure of its own, for the study of the construction process is relatively small. However, due to the high-rise building complex, long construction period, the construction of high quality, simulation is paid more and more attention to the construction process of the high-rise structure, and on the trend in the imperative. Based on the background of Tianjin city Nord Winland international financial center project. Simulation analysis of construction process of structure using finite element analysis software SAP2000, the simulation results of the construction process through the comparison of different factors Impact analysis of the need to pay attention to in the construction process, provide a useful reference for the construction of super high-rise mega frame core tube - ring cantilever truss structure, this paper carried out the following work: 1. of the mega frame corewall outrigger truss ring structure, transport finite element model is established by using SAP2000 finite element the analysis software, and the construction process analysis model and process are described, forming a more complete modeling scheme to simulate the construction process. By comparing with the construction monitoring data, the correctness of the analytical model simulation of construction process, and analyzes the causes of the error of.2. to analyze the construction process simulation analysis loading. By using the finite element model to simulate the construction process of different loading modes on the mega frame core tube - ring cantilever truss structure, through the comparison of different The displacement of loading on the structure of the vertical stress, vertical displacement and vertical tube, analysis of different loading methods on the structure of the construction process. The conclusion shows that the effect of the construction process, accurate loading method is closer to the actual situation in the construction process, construction process simulation should be used when the exact loading method of.3. analysis of the necessity of leading tube construction from the theoretical analysis, the existing calculation methods of cylinder leading construction layers. With the construction process simulation of different cylinder leading layers, different changes through the vertical displacement and vertical comparison of structure stress analysis, the tube leading construction can effectively reduce the vertical displacement of different structures. For the 64 storey high-rise structure 8-12, the leading construction layer is more reasonable by changing the order of.4. truss, vertical comparison of the displacement of structure, reasonable construction sequence of truss crane design; research Effect of vertical displacement of the structure. The results show that for the last connected truss, truss structure can connect vertical displacement coordination structure in the construction process, but will be larger Miguel truss structure, the truss structure construction process need to pay attention to the stress problem of small crane; vertical displacement structure.5., can simplify the calculation method of shrinkage and creep coefficient is analyzed by theory and its influence on the structure in the construction process simulation, and in the construction process simulation calculation of shrinkage and creep are considered. The influence of vertical displacement and vertical comparison of structure stress, get the conclusion: in the analysis of construction process simulation, shrinkage and creep to the mega frame core tube and the annular cantilever truss structure of vertical displacement and vertical displacement difference influence, so in the construction process simulation should not be ignored The effect of shrinkage and creep should be fully considered and weakened during the construction process.

【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU974

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