本文選題：結構建模 + 土-結構相互作用�。� 參考：《蘇州科技學院》2013年碩士論文

【摘要】：結構計算模型的建立是否合理,將直接影響到結構的抗震分析結果。為了更好地研究結構計算模型對高層建筑結構地震響應數(shù)值模擬結果的影響,本文選擇了一結構臺陣作為研究對象,利用Abaqus有限元軟件和2009年姚安地震時得到的該建筑的結構臺陣記錄,進行了該高層建筑多種模型的時程反應分析,并與實際記錄進行了比較。本文的主要工作內容如下：(1)選取云南省人民政府防災減災應急指揮中心大樓作為本文的結構原型,分別建立了以剛性地基為假定的二維和三維結構模型,以及考慮土-結構相互作用的三維模型。(2)以姚安地震的地下室加速度記錄作為輸入,分別對二維和三維結構模型進行時程反應計算,與實際記錄的比較結果表明：三維模型的計算結果與實測記錄吻合較好,就高層建筑的抗震分析而言,由于結構較復雜,應盡可能采用三維模型,二維模型不足以反映結構的動力特性。(3)根據(jù)該大樓的地質勘探資料,假定了水平成層和有傾角成層的兩種土介質模型。比較計算結果與結構實測記錄發(fā)現(xiàn)：有傾角成層土-結構相互作用模型的計算結果與觀測記錄相比有明顯的放大現(xiàn)象,在NS方向體現(xiàn)得更為突出。這說明,就高層建筑的抗震分析而言,土介質模型對計算結果影響很大,在進行土-結構相互作用分析時,土層模型應盡可能與真實土層相符,否則其計算結果會產(chǎn)生較大誤差。(4)將剛性地基三維結構模型和考慮土-結構相互作用三維模型的計算結果與結構實測記錄對比發(fā)現(xiàn)：考慮土-結構相互作用影響更符合實際。
[Abstract]:Whether the structural calculation model is reasonable or not will directly affect the seismic analysis results of the structure. In order to better study the influence of the structural calculation model on the seismic response of high-rise building structures, a structural array is selected as the research object in this paper. Using the finite element software Abaqus and the structural array records of the building obtained from the Yao'an earthquake in 2009, the time-history response analysis of various models of the high-rise building is carried out and compared with the actual records. The main work of this paper is as follows: (1) selecting the Building of the disaster Prevention and Mitigation and Emergency Command Center of the Yunnan Provincial people's Government as the structural prototype of this paper, the 2D and 3D structural models assumed by the rigid foundation are established, respectively. Taking the acceleration records of the basement of Yao'an earthquake as input, the time-history responses of two-dimensional and three-dimensional structural models are calculated, respectively. The results of comparison with the actual records show that the calculated results of the 3D model are in good agreement with the measured data. As far as seismic analysis of high-rise buildings is concerned, the three-dimensional model should be used as far as possible because of the complexity of the structure. The two-dimensional model is not sufficient to reflect the dynamic characteristics of the structure. (3) based on the geological exploration data of the building, two soil media models, horizontal stratification and inclined stratification, are assumed. Comparing the calculated results with the measured data, it is found that the calculated results of the laminated soil-structure interaction model with dip angle have obvious magnification phenomenon compared with the observed data, and are more prominent in NS direction. This shows that the soil media model has a great influence on the calculation results for the seismic analysis of high-rise buildings. In the analysis of soil-structure interaction, the soil layer model should be consistent with the real soil layer as much as possible. Otherwise, the result of calculation will cause a big error. (4) comparing the calculation results of 3D structural model of rigid foundation with that of three-dimensional model considering soil-structure interaction with the measured data of structure, it is found that considering the influence of soil-structure interaction is more in line with the reality.
【學位授予單位】：蘇州科技學院
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU435

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本文編號：1970405