發(fā)布時(shí)間：2019-02-24 15:55

【摘要】：本文應(yīng)用ANSYS有限元分析軟件對(duì)重慶市渝中區(qū)高九路大底盤(pán)多塔高層結(jié)構(gòu)建立準(zhǔn)確的有限元模型，研究大底盤(pán)多塔高層結(jié)構(gòu)在靜、動(dòng)力荷載作用下結(jié)構(gòu)特有的響應(yīng)特征，特別是研究該結(jié)構(gòu)在地震作用下的響應(yīng)。本文的工作主要包括： （1）分析了大底盤(pán)多塔結(jié)構(gòu)體系的形式與特點(diǎn)，提出了大底盤(pán)多塔結(jié)構(gòu)計(jì)算模型以及ANSYS有限元模型建立的要求與方法。 （2）對(duì)建筑結(jié)構(gòu)的梁、柱、樓板以及剪力墻等構(gòu)件的尺寸與連接問(wèn)題進(jìn)行了解決，實(shí)現(xiàn)了將大底盤(pán)多塔結(jié)構(gòu)準(zhǔn)確的轉(zhuǎn)化為ANSYS有限元模型。 （3）本論文的建筑結(jié)構(gòu)ANSYS模型的單元數(shù)有七萬(wàn)多個(gè)，節(jié)點(diǎn)數(shù)有五萬(wàn)多個(gè)，模型復(fù)雜，，建模工作繁瑣。成功地解決了ANSYS有限元模型節(jié)點(diǎn)耦合問(wèn)題。 （4）完成了對(duì)結(jié)構(gòu)ANSYS有限元模型施加自重荷載與風(fēng)荷載等荷載組合。得出大底盤(pán)多塔高層結(jié)構(gòu)在靜力荷載作用下的響應(yīng)特征。 （5）通過(guò)模態(tài)分析與反譜分析，得到大底盤(pán)多塔結(jié)構(gòu)在地震作用下的響應(yīng)。通過(guò)結(jié)構(gòu)剪力墻的位移矢量圖，分析了結(jié)構(gòu)剪力墻的偏移和扭轉(zhuǎn).通過(guò)結(jié)構(gòu)的節(jié)點(diǎn)位移曲線圖，研究了大底盤(pán)多塔結(jié)構(gòu)塔樓之間的相互協(xié)調(diào)性。 （6）通過(guò)結(jié)構(gòu)在不同的地震波雙向作用下的結(jié)構(gòu)動(dòng)力時(shí)程響應(yīng)分析,得出大底盤(pán)多塔結(jié)構(gòu)的位移響應(yīng)和層間位移角的變化趨勢(shì)。通過(guò)比較分析，得出大底盤(pán)多塔結(jié)構(gòu)中各塔樓水平方向響應(yīng)變化的隨機(jī)性。 （7）分析比較該結(jié)構(gòu)的內(nèi)力云圖與內(nèi)力數(shù)值以及剪力墻的抗剪切性能，得出剪力墻的設(shè)計(jì)滿足結(jié)構(gòu)抗震設(shè)計(jì)，同時(shí)得出剪力墻與結(jié)構(gòu)的整體穩(wěn)定性。 通過(guò)對(duì)重慶市渝中區(qū)高九路大底盤(pán)多塔高層結(jié)構(gòu)進(jìn)行ANSYS分析，從量化上準(zhǔn)確地反映了大底盤(pán)多塔高層結(jié)構(gòu)在靜、動(dòng)力荷載作用下結(jié)構(gòu)的響應(yīng)，得出了大底盤(pán)多塔結(jié)構(gòu)區(qū)別于其他結(jié)構(gòu)所特有的建筑結(jié)構(gòu)特點(diǎn)。論文的研究方法與結(jié)論，為四川地區(qū)類(lèi)似體型的高層建筑結(jié)構(gòu)的設(shè)計(jì)和研究提供了參考依據(jù)。通過(guò)準(zhǔn)確的量化數(shù)值分析，可為建筑結(jié)構(gòu)穩(wěn)定性分析與安全檢驗(yàn)提供準(zhǔn)確依據(jù)。該項(xiàng)研究對(duì)于大型建筑結(jié)構(gòu)具有十分重要的安全意義以及實(shí)用價(jià)值。
[Abstract]:In this paper, the finite element analysis software ANSYS is used to establish an accurate finite element model for the high-rise structure with large chassis and multi-tower in Gaojiulu Road, Yuzhong District, Chongqing, and to study the special response characteristics of multi-tower high-rise structure with large chassis under static and dynamic loads. In particular, the response of the structure to earthquake is studied. The main work of this paper is as follows: (1) the form and characteristics of multi-tower structure system with large chassis are analyzed, and the calculation model of multi-tower structure with large chassis and the requirement and method of establishing ANSYS finite element model are put forward. (2) the dimension and connection of beam, column, floor and shear wall of building structure are solved, and the multi-tower structure with large chassis is transformed into ANSYS finite element model accurately. (3) the ANSYS model of building structure in this paper has more than 70,000 units and more than 50,000 nodes. The model is complex and the modeling work is tedious. The node coupling problem of ANSYS finite element model is solved successfully. (4) the combination of deadweight load and wind load on the ANSYS finite element model is completed. The response characteristics of multi-tower high-rise structures with large chassis under static load are obtained. (5) through modal analysis and inverse spectrum analysis, the response of multi-tower structure with large chassis under earthquake action is obtained. The deflection and torsion of the structure shear wall are analyzed by the displacement vector diagram of the structure shear wall. The coordination of tower towers with large chassis and multi-tower structure is studied by means of the displacement curve of the nodes of the structure. (6) by analyzing the dynamic time-history response of the structure under different seismic waves, the variation trend of displacement response and interstory displacement angle of multi-tower structure with large chassis is obtained. Through comparative analysis, the randomness of the horizontal response of each tower in the multi-tower structure with large chassis is obtained. (7) by analyzing and comparing the internal force cloud diagram and the internal force value of the structure and the shear resistance performance of the shear wall, it is concluded that the design of the shear wall meets the seismic design of the structure, and the overall stability of the shear wall and the structure is obtained at the same time. Based on the ANSYS analysis of the multi-tower high-rise structure of Gaojiu Road, Yuzhong District, Chongqing, the response of multi-tower high-rise structure with large chassis under static and dynamic loads is accurately reflected in quantification. The characteristics of large chassis multi-tower structure are obtained, which are different from other structures. The research methods and conclusions provide a reference for the design and research of tall building structures of similar shapes in Sichuan area. Through the accurate quantitative numerical analysis, it can provide the accurate basis for the stability analysis and safety inspection of the building structure. This research has very important safety significance and practical value for large-scale building structure.
【學(xué)位授予單位】：沈陽(yáng)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TU973.21

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