基于模块化方法的高层建筑斜交网格筒结构抗侧刚度计算理论研究
发布时间：2019-01-08 10:28
【摘要】：随着经济的发展与兴盛,为满足建筑行业得需要,现代建筑对结构高度与造型的要求也越来越高,这促使了一些新型建筑结构体系的出现。高层建筑斜交网格筒结构是一种新型的高层结构体系,它具有强大的抗侧刚度与灵活的平面形状布置,可较高效率地实现各种优美的造型,满足了现代建筑追求高度与美观的双重需求,被广泛应用于建造现代高层建筑。目前针对斜交网格筒结构抗侧刚度研究多是基于矩形平面的斜交网格筒,而对任意多边形斜交网格筒抗侧刚度的理论研究尚不完善,需要对任意多边形平面的斜交网格筒结构抗侧刚度理论计算方法进行研究。本文首先定义了模块化方法在斜交网格筒结构理论计算中的基本概念,将斜交网格筒结构沿高度方向分为多个模块,以模块为基础对斜交网格筒结构展开理论研究。通过假定斜交网格筒结构斜柱只受轴向力作用,从理论上提出了适用于任意正多边形平面的斜交网格筒结构抗侧刚度计算模型;采用模块化方法得出了结构侧移的计算公式,通过有限元方法验证了模块化方法与抗侧刚度计算模型的准确性。采用有限元方法进行参数分析,对模块化方法计算斜交网格筒结构侧移结果的误差进行了分析,探讨了斜柱端部弯矩,刚性楼板假定和模块数量三者对结构侧移的理论计算结果的影响规律。基于模块化方法与等材料原则,以结构顶点侧移作为参考指标,提出了斜交角度优选理论方法,通过有限元方法验证了其合理性;基于目标顶点位移设计方法,提出了任意正多边形斜交网格筒结构斜柱横截面初步设计方法,期望为工程上斜柱截面初步设计提供理论参考。
[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.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU973.2
[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.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU973.2
【参考文献】
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