地下室頂板有效剛度對(duì)高層建筑嵌固的研究
[Abstract]:In the calculation and analysis of high-rise building, it is a very important assumption that the fixed end of the structure is not only affected by the calculation of the internal force of the structure, but also has a great influence on the project cost. In the engineering design, the basement roof is often considered as the embedded end of the structure. However, due to the need of the function of the building, the distance between the vertical members of the basement becomes larger, forming a large space, large column net building structure. At this time the basement roof of the inlay effect to be clear. In the current research, the research on the effect of effective stiffness of basement roof on the inlay effect of the structure is relatively scarce, so it often leads to the wrong or improper design of the structure. Based on the above situation, this paper adjusts the stiffness of the basement in a certain range by theoretical analysis and example analysis, according to the finite element analysis software, so that the basement roof can satisfy the function of embedding. Therefore, the main research contents and achievements of this paper are as follows: (1) through the reading of the literature, this paper summarizes the current research status of the embedded ends of high-rise buildings, and summarizes the current research results and specifications on the role of structural inlay. The deficiencies and omissions of current research are pointed out, which provide support for designers' reference and further analysis of researchers. (2) the stiffness of floor slab has certain influence factors on the overall analysis of structure, and the paper analyzes and sums up the influencing factors of floor stiffness. The effects of floor thickness, opening rate and secondary beam arrangement on the floor stiffness are studied respectively. (3) the effective range of basement stiffness is analyzed, and the projection area of basement is considered. The position of the upper tower and the stiffness of the horizontal connection member affect it, and the relevant conclusions are obtained. (4) considering the effective range of the floor stiffness and the basement stiffness, combined with the engineering example, The effect of effective basement stiffness on dynamic characteristics, deformation characteristics and internal force characteristics of high-rise buildings is studied. (5) dynamic elastic analysis of high-rise buildings with basement is carried out by finite element analysis software Midas-Building,. The effect of effective stiffness of basement on structural inlay is studied. It is pointed out that the basement can achieve the function of embedding by adjusting the basement roof and the anti-lateral stiffness in the effective range.
【學(xué)位授予單位】:西南科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TU93;TU973.2
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