本文選題：Pushover分析 + 時程分析��； 參考：《蘇州科技大學》2016年碩士論文

【摘要】：地震作為一種突發(fā)性的自然災(zāi)害,往往在沒有什么預(yù)兆的情況下突然來臨,災(zāi)后的次生災(zāi)害如瘟疫、水災(zāi)等,給重建工作帶來了重重困難。根據(jù)建筑物的實際條件,采取科學有效的設(shè)計方法和措施是目前抗震的最有效的途徑。Pushover分析作為基于性能抗震設(shè)計的重要方法,以其自身的優(yōu)勢,廣泛應(yīng)用到各種建筑結(jié)構(gòu)形式中。但是水平加載模式的選取是Pushover分析方法的關(guān)鍵環(huán)節(jié),將直接影響到結(jié)構(gòu)模型分析結(jié)果的準確性。本文較全面地論述了Pushover分析方法的發(fā)展背景和概況以及其基本理論、優(yōu)缺點。介紹了常用的幾種水平加載模式和常用的Pushover分析方法,并闡述了時程分析的基本理論和地震波選取的關(guān)鍵因素。本文選取五種常用的側(cè)向加載模式,對三棟不同高度的RC框架結(jié)構(gòu)進行Pushover分析,模擬得到結(jié)構(gòu)在罕遇地震下的性能點參數(shù),并與非線性時程法模擬得到的最大樓層位移、層間位移、層間位移角、層間剪力和塑性鉸分布狀況等進行對比分析,對RC框架結(jié)構(gòu)進行Pushover分析選取的加載模式進行了歸納并提出了一些建議。得出不同的側(cè)向加載模式在低層結(jié)構(gòu)中Pushover分析具有良好的精確度,隨著結(jié)構(gòu)高度的增加,結(jié)構(gòu)反應(yīng)的分析結(jié)果有一定的離散型,對于高層結(jié)構(gòu)應(yīng)多選取考慮高階振型的水平加載模式,取平均值減少誤差。本文利用Pushover分析方法對單向偏心結(jié)構(gòu)的扭轉(zhuǎn)進行了研究,提出了調(diào)整單向偏心結(jié)構(gòu)的剛度調(diào)整算法,用一個八層單向偏心結(jié)構(gòu)算例進行驗證并取得良好的效果。
[Abstract]:Earthquake, as a sudden natural disaster, often comes suddenly without any warning. The secondary disasters after the disaster, such as plague, flood and so on, bring a lot of difficulties to the reconstruction work.According to the actual conditions of buildings, it is the most effective way to use scientific and effective design methods and measures. Pushover analysis, as an important method of performance-based seismic design, has its own advantages.Widely used in various forms of building structure.However, the selection of horizontal loading mode is the key link of Pushover analysis method, which will directly affect the accuracy of structural model analysis results.In this paper, the development background, general situation, basic theory, advantages and disadvantages of Pushover analysis method are discussed.Several commonly used horizontal loading modes and Pushover analysis methods are introduced, and the basic theory of time-history analysis and the key factors of seismic wave selection are expounded.In this paper, five commonly used lateral loading modes are selected to analyze three RC frame structures with different heights by Pushover analysis. The performance point parameters of the structures under rare earthquakes are simulated, and the maximum floor displacement obtained by nonlinear time-history method is simulated.Based on the comparative analysis of interstory displacement, interstory displacement angle, interstory shear force and plastic hinge distribution, the loading modes selected for Pushover analysis of RC frame structures are summarized and some suggestions are put forward.It is concluded that different lateral loading modes have good accuracy in Pushover analysis of low-rise structures. With the increase of structural height, the results of structural response analysis have a certain discrete type.For high-rise structures, the horizontal loading mode with higher vibration modes should be chosen, and the average value should be taken to reduce the error.In this paper, the torsion of unidirectional eccentric structure is studied by using Pushover analysis method, and the stiffness adjustment algorithm of unidirectional eccentric structure is proposed, which is verified by an example of an eight-story unidirectional eccentric structure and good results are obtained.
【學位授予單位】：蘇州科技大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TU375.4;TU352.11

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