【摘要】：隨著經(jīng)濟的發(fā)展與興盛,為滿足建筑行業(yè)得需要,現(xiàn)代建筑對結(jié)構(gòu)高度與造型的要求也越來越高,這促使了一些新型建筑結(jié)構(gòu)體系的出現(xiàn)。高層建筑斜交網(wǎng)格筒結(jié)構(gòu)是一種新型的高層結(jié)構(gòu)體系,它具有強大的抗側(cè)剛度與靈活的平面形狀布置,可較高效率地實現(xiàn)各種優(yōu)美的造型,滿足了現(xiàn)代建筑追求高度與美觀的雙重需求,被廣泛應(yīng)用于建造現(xiàn)代高層建筑。目前針對斜交網(wǎng)格筒結(jié)構(gòu)抗側(cè)剛度研究多是基于矩形平面的斜交網(wǎng)格筒,而對任意多邊形斜交網(wǎng)格筒抗側(cè)剛度的理論研究尚不完善,需要對任意多邊形平面的斜交網(wǎng)格筒結(jié)構(gòu)抗側(cè)剛度理論計算方法進行研究。本文首先定義了模塊化方法在斜交網(wǎng)格筒結(jié)構(gòu)理論計算中的基本概念,將斜交網(wǎng)格筒結(jié)構(gòu)沿高度方向分為多個模塊,以模塊為基礎(chǔ)對斜交網(wǎng)格筒結(jié)構(gòu)展開理論研究。通過假定斜交網(wǎng)格筒結(jié)構(gòu)斜柱只受軸向力作用,從理論上提出了適用于任意正多邊形平面的斜交網(wǎng)格筒結(jié)構(gòu)抗側(cè)剛度計算模型;采用模塊化方法得出了結(jié)構(gòu)側(cè)移的計算公式,通過有限元方法驗證了模塊化方法與抗側(cè)剛度計算模型的準(zhǔn)確性。采用有限元方法進行參數(shù)分析,對模塊化方法計算斜交網(wǎng)格筒結(jié)構(gòu)側(cè)移結(jié)果的誤差進行了分析,探討了斜柱端部彎矩,剛性樓板假定和模塊數(shù)量三者對結(jié)構(gòu)側(cè)移的理論計算結(jié)果的影響規(guī)律。基于模塊化方法與等材料原則,以結(jié)構(gòu)頂點側(cè)移作為參考指標(biāo),提出了斜交角度優(yōu)選理論方法,通過有限元方法驗證了其合理性;基于目標(biāo)頂點位移設(shè)計方法,提出了任意正多邊形斜交網(wǎng)格筒結(jié)構(gòu)斜柱橫截面初步設(shè)計方法,期望為工程上斜柱截面初步設(shè)計提供理論參考。
[Abstract]:With the development and prosperity of economy, in order to meet the needs of the construction industry, the requirements of modern architecture for the height and shape of the structure are higher and higher, which promotes the emergence of some new building structure system. The oblique grid tube structure of high-rise building is a new type of tall structure system. It has strong lateral stiffness and flexible layout of plane shape, which can realize various beautiful shapes efficiently. It meets the dual demand of height and beauty in modern architecture, and is widely used in building modern high-rise buildings. At present, the research on the lateral stiffness of oblique reticulated tube structures is mostly based on rectangular plane, but the theoretical research on the lateral stiffness of any polygonal oblique reticulated tube is not perfect. The theoretical calculation method of lateral stiffness of oblique reticulated tube structures with arbitrary polygonal plane needs to be studied. In this paper, the basic concept of modularization method in the theoretical calculation of oblique grid tube structure is defined. The oblique grid tube structure is divided into several modules along the height direction, and the theoretical research on the oblique grid tube structure is carried out on the basis of the module. Based on the assumption that the oblique column of oblique reticulated tube structure is subjected to only axial force, a lateral stiffness calculation model of oblique grid tube structure suitable for arbitrary regular polygonal plane is proposed theoretically. The formula of structural lateral displacement is obtained by modularization method, and the accuracy of modularization method and lateral stiffness calculation model is verified by finite element method. The finite element method is used for parameter analysis, and the error of the modular method for calculating the lateral displacement of oblique reticulated tube structures is analyzed, and the bending moment at the end of the inclined column is discussed. The influence of the assumption of rigid floor slab and the number of modules on the theoretical calculation results of structural lateral displacement. Based on the modularization method and the principle of equal material, taking the lateral displacement of the structure vertex as the reference index, the theoretical method of skew angle optimal selection is put forward, and the rationality of the method is verified by the finite element method. Based on the objective vertex displacement design method, a preliminary design method for the cross section of oblique column of an arbitrary regular polygon oblique reticulated tube structure is proposed, which is expected to provide a theoretical reference for the preliminary design of the oblique column section in engineering.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU973.2

【參考文獻】

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1 史慶軒;戎，

本文編號：2404483