本文關鍵詞： 水平伸臂 實腹梁 空腹桁架 斜腹桿桁架 側移 抗震性能　出處：《華中科技大學》2013年碩士論文　論文類型：學位論文

【摘要】：隨著經濟的發(fā)展，我國高層和超高層建筑發(fā)展迅速，結構所承受的水平荷載和側移隨著結構高度的增加而增大。在結構中設置水平伸臂是提高結構的抗側剛度，減小水平側移的有效方法，在國內外許多高層建筑結構工程中被廣泛地采用。帶水平伸臂的高層建筑在我國高層設計規(guī)范中屬于復雜高層建筑結構，，規(guī)范中對這類結構的設計條款相對簡單。因此研究這類結構的受力變形性能，并提煉出具體的設計概念具有重要的意義。 本文在對加強層結構的基本特點、國內外加強層結構的應用現狀、對帶加強層結構簡化模型及抗震減震方面的相關研究工作進行綜述的基礎上，結合具體的工程算例進行如下研究工作：將采用實體梁、斜腹桿桁架、空腹桁架的水平伸臂構件，分別應用到設置一道和兩道加強層的鋼筋混凝土高層框-筒結構中，對其采用振型分解反應譜法和時程分析法進行計算分析，研究不同的水平伸臂構件在水平地震荷載作用下的地震響應。將分析計算結果進行對比研究，得出了以下結論： 1.伸臂剛度和數量。采用有限剛度和數量相對較多的水平伸臂，在控制結構水平側移的同時，能夠盡量減小結構內力和剛度突變的負面影響，有利于改善結構的抗震性能。 2.水平伸臂的結構形式。當結構的水平側移要求嚴格時，可優(yōu)先考慮斜腹桿桁架水平伸臂；當結構的水平側移要求不那么嚴格，可以從更有利于結構抗震的角度出發(fā)，選擇空腹桁架水平伸臂；當有限剛度的水平伸臂均無法達到水平側移控制的要求時，可采用實腹梁水平伸臂形式對結構側移進行控制。 3.構造措施。在水平伸臂附近，要做好相關的構造加強措施，從而有利于結構的抗震。
[Abstract]:With the development of economy, high-rise and super-high-rise buildings in China are developing rapidly. The horizontal load and lateral displacement of the structure increase with the increase of the height of the structure. The lateral stiffness of the structure is improved by setting the horizontal arm in the structure. The effective method of reducing horizontal lateral displacement is widely used in many high-rise building structures at home and abroad. High-rise buildings with horizontal extension arm belong to complex high-rise building structures in our country's high-rise design code. The design clause of this kind of structure in the code is relatively simple. Therefore, it is of great significance to study the mechanical and deformation properties of this kind of structure and to extract the concrete design concept. In this paper, the basic characteristics of the strengthened story structure, the current situation of the application of the strengthened story structure at home and abroad, the simplified model of the strengthened story structure with the belt and the related research work in the aspect of seismic and seismic absorption are summarized in this paper. Combined with concrete engineering examples, the following research work is carried out: the horizontal extension arm members of solid beam, inclined web truss and empty web truss are applied to the reinforced concrete high-rise frame-tube structure with one or two strengthened floors, respectively. The mode decomposition response spectrum method and time history analysis method are used to calculate and analyze the seismic response of different horizontal arm members under horizontal earthquake load. The results of analysis and calculation are compared and analyzed, and the following conclusions are obtained:. 1. The stiffness and quantity of extension arm. With finite stiffness and relatively large number of horizontal arms, the negative effects of structural internal force and stiffness abrupt change can be minimized while the horizontal lateral displacement of the structure is controlled, which is helpful to improve the seismic performance of the structure. 2. The structural form of horizontal extension arm. When the horizontal lateral displacement of the structure is strict, the horizontal extension arm of the inclined web truss can be given priority; when the horizontal lateral displacement requirement of the structure is not so strict, it can be set out from the point of view which is more favorable to the earthquake resistance of the structure. When the horizontal extension arm of finite stiffness can not meet the requirement of horizontal lateral displacement control, the horizontal extension arm of solid web beam can be used to control the lateral displacement of the structure. 3.Constructional measures. In the vicinity of horizontal extension arm, we should do well the relevant structural strengthening measures, which is beneficial to the seismic resistance of the structure.
【學位授予單位】：華中科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU973.31

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