發(fā)布時間：2019-07-05 19:36

【摘要】：大底盤地下室多塔樓結(jié)構(gòu)是在目前用地緊張情況下與時俱進(jìn)的新型結(jié)構(gòu)形式。它一般由一整片用作地下車庫或地下商場的地下室和多棟高層塔樓組成。這種結(jié)構(gòu)能最大限度的利用土地,很合理的分配土地使用,特別適用于住宅小區(qū)建設(shè)。很多學(xué)者和工程技術(shù)人員對大底盤地下室多塔結(jié)構(gòu)進(jìn)行了理論和設(shè)計方面的研究,已經(jīng)取得了諸如計算理論模型、嵌固端設(shè)計等成果,但仍有較多問題需要進(jìn)一步分析研究。本文對大底盤地下室多塔樓結(jié)構(gòu)進(jìn)行了理論總結(jié)與計算分析,深入探討了此類結(jié)構(gòu)在水平作用力下的受力性能。首先介紹了大底盤地下室的基本分析方法,總結(jié)了大底盤多塔結(jié)構(gòu)的計算分析模型與振動計算推導(dǎo),闡述了此類結(jié)構(gòu)的設(shè)計建模分析原則。然后分析了塔樓對周邊地下室結(jié)構(gòu)的應(yīng)力、內(nèi)力等參數(shù)的影響。探討了不同塔樓結(jié)構(gòu)類型、塔樓寬度與高度、地下室剛度分布時整體結(jié)構(gòu)的地震反應(yīng),得出了塔樓對地下室的大致影響范圍與不同情況下該影響范圍的變化情況。繼而探討了多塔樓的相互影響機制。通過改變大底盤地下室單塔樓結(jié)構(gòu)中塔樓結(jié)構(gòu)類型與地下室剛度分布,進(jìn)行塔樓地震反應(yīng)分析,提供單塔結(jié)構(gòu)中附帶的地下室跨數(shù)的參考依據(jù),進(jìn)而分析雙塔結(jié)構(gòu)相互間結(jié)構(gòu)特性的影響。通過比較不同布置形式的大底盤地下室多塔樓與單塔樓的結(jié)構(gòu)特性,揭示多塔樓間的影響特點。最后對工程中常見的大底盤地下室頂板與塔樓首層高差錯層情況進(jìn)行了有限元分析,探討了高差錯層處在水平地震作用下的受力情況。針對工程常用的幾種高差構(gòu)造措施,進(jìn)行整體結(jié)構(gòu)的反應(yīng)譜分析,給出構(gòu)造措施對高差處傳力性能的影響。對不同高差的整體結(jié)構(gòu)進(jìn)行pushover分析,獲得不同高差下整體結(jié)構(gòu)的破壞機制,得出高差對整體結(jié)構(gòu)性能的影響。綜上所述,本文主要對大底盤地下室多塔樓結(jié)構(gòu)中塔樓對地下室影響、多塔樓間的相互影響機制、塔樓與地下室頂板高差處的傳力性能等三個方面進(jìn)行了研究,得出了相應(yīng)的結(jié)論,為此類結(jié)構(gòu)的相關(guān)研究以及設(shè)計提供了理論技術(shù)參考。
文內(nèi)圖片：
圖片說明：大底盤多塔樓的動力分析模型
[Abstract]:The multi-tower structure of large chassis basement is a new type of structure which keeps pace with the times under the condition of shortage of land at present. It usually consists of a basement and a number of high-rise towers used as underground garages or underground shopping malls. This structure can maximize the use of land, very reasonable distribution of land use, especially suitable for residential district construction. Many scholars and engineers have studied the theory and design of multi-tower structure in large chassis basement, and have made achievements such as calculation theory model, embedded end design and so on, but there are still many problems that need to be further analyzed and studied. In this paper, the theoretical summary and calculation and analysis of the multi-tower structure of the basement with large chassis are carried out, and the mechanical properties of this kind of structure under the horizontal force are discussed in detail. Firstly, the basic analysis method of large chassis basement is introduced, the calculation analysis model and vibration calculation derivation of large chassis multi-tower structure are summarized, and the design modeling and analysis principles of this kind of structure are expounded. Then the influence of the tower on the stress, internal force and other parameters of the surrounding basement structure is analyzed. The seismic response of the whole structure when different tower structure types, tower width and height and basement stiffness distribution is discussed, and the approximate influence range of tower on basement and the variation of the influence range under different conditions are obtained. Then the interaction mechanism of multi-tower is discussed. By changing the type of tower structure and the distribution of basement stiffness in the single tower structure with large chassis, the seismic response analysis of the tower is carried out, and the reference basis of the basement span attached to the single tower structure is provided, and then the influence of the structural characteristics of the two towers on each other is analyzed. By comparing the structural characteristics of multi-tower and single tower in large chassis basement with different arrangement forms, the influence characteristics of multi-tower are revealed. Finally, the finite element analysis of the high error layer between the basement roof of the large chassis and the first floor of the tower is carried out, and the stress of the high error layer under the action of horizontal earthquake is discussed. In view of several kinds of height difference structural measures commonly used in engineering, the response spectrum analysis of the whole structure is carried out, and the influence of structural measures on the force transmission performance at the height difference is given. The pushover analysis of the whole structure with different height difference is carried out, and the failure mechanism of the whole structure under different height difference is obtained, and the influence of height difference on the performance of the whole structure is obtained. To sum up, this paper mainly studies the influence of tower on basement, the interaction mechanism between multi-tower and basement roof, and the force transfer performance between tower and basement roof, and draws the corresponding conclusions, which provides a theoretical and technical reference for the related research and design of this kind of structure.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU973.3;TU93

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本文編號：2510759