本文選題：框架核心筒結(jié)構(gòu)　切入點(diǎn)：剪力滯后效應(yīng)　出處：《蘭州交通大學(xué)》2017年碩士論文

【摘要】：框架核心筒結(jié)構(gòu)是外圍由框架結(jié)構(gòu)、中間由筒體構(gòu)成的高層建筑結(jié)構(gòu)體系,由于其良好的受力特性在高層建筑中得到了廣泛的應(yīng)用。等效連續(xù)化法作為一種外框架結(jié)構(gòu)的分析方法,由于能夠考慮剪力滯后效應(yīng)的影響,可以較為準(zhǔn)確的分析框架核心筒結(jié)構(gòu)中外框架受水平荷載時(shí)的內(nèi)力與位移。本文以等效連續(xù)化理論為基礎(chǔ)對(duì)外框架結(jié)構(gòu)進(jìn)行簡(jiǎn)化,并分別采用力法和微分方程方法對(duì)框架核心筒結(jié)構(gòu)進(jìn)行整體求解,并比較計(jì)算結(jié)果。最后基于等效連續(xù)化法采用ANSYS軟件對(duì)框架核心筒結(jié)構(gòu)進(jìn)行簡(jiǎn)化建模,并與原整體模型結(jié)果進(jìn)行對(duì)比分析。論文的具體工作如下:(1)以等效連續(xù)化理論為基礎(chǔ),將框架核心筒結(jié)構(gòu)外框架部分等效為正交異性板結(jié)構(gòu),列出考慮剪力滯效應(yīng)的外框筒結(jié)構(gòu)單獨(dú)受三種典型水平荷載作用下的梁柱內(nèi)力和水平位移計(jì)算公式。然后在外框筒結(jié)構(gòu)單獨(dú)受力下的應(yīng)力計(jì)算公式基礎(chǔ)上,分別采用力法和微分方程法列出對(duì)框架核心筒整體受力時(shí)考慮剪力滯后效應(yīng)的梁柱內(nèi)力和水平位移計(jì)算公式。(2)采用計(jì)算公式對(duì)某典型框架核心筒結(jié)構(gòu)進(jìn)行柱軸力與水平位移的計(jì)算,并求出外框架單獨(dú)受力的結(jié)果,以及框架核心筒結(jié)構(gòu)整體受力時(shí)采用等效連續(xù)體-力法和等效連續(xù)體-微分方程法計(jì)算的結(jié)果,將結(jié)果進(jìn)行比較。利用有限元軟件ANSYS對(duì)此框架核心筒結(jié)構(gòu)進(jìn)行建模,將有限元分析結(jié)果與基于連續(xù)化法的手算結(jié)果進(jìn)行比較分析。(3)通過(guò)對(duì)連續(xù)化法準(zhǔn)確性的驗(yàn)證,在等效連續(xù)化法的基礎(chǔ)上提出一種對(duì)高層框架核心筒結(jié)構(gòu)的有限元簡(jiǎn)化建模方法,即將外框架等效為正交異性板建模,通過(guò)定義板厚和異性板材料參數(shù)完成外部復(fù)雜框架結(jié)構(gòu)的建模,能夠大幅減少?gòu)?fù)雜高層模型的建模時(shí)間。對(duì)簡(jiǎn)化建模后的框架核心筒結(jié)構(gòu)模型和整體式建模的模型進(jìn)行水平靜載和動(dòng)力特性的對(duì)比分析,驗(yàn)證簡(jiǎn)化建模方法的可行性。通過(guò)對(duì)比分析,本文認(rèn)為等效連續(xù)化手算方法能夠模擬高層框架核心筒結(jié)構(gòu)的受力特點(diǎn)有一定準(zhǔn)確性,但計(jì)算繁瑣,實(shí)用性不強(qiáng)。初步設(shè)計(jì)時(shí),可采用本文提出的基于連續(xù)化法的簡(jiǎn)化建模方法對(duì)建筑進(jìn)行初步估算,并為設(shè)計(jì)最后階段的整體建模分析提供一種校核措施。
[Abstract]:The frame core tube structure is a tall building structure system with outer frame structure and middle tube body. Because of its good mechanical properties, it has been widely used in high-rise buildings. As an analysis method of external frame structure, the equivalent continuum method can take into account the influence of shear lag effect. The internal force and displacement of the frame core tube structure under horizontal load can be accurately analyzed. This paper simplifies the external frame structure based on the equivalent continuum theory. The force method and differential equation method are used to solve the frame core tube structure as a whole, and the results are compared. Finally, based on the equivalent continuum method, the frame core tube structure is simplified and modeled by ANSYS software. The main work of this paper is as follows: (1) based on the equivalent continuum theory, the outer frame part of the frame core tube structure is equivalent to the orthotropic plate structure. The formulas for calculating the internal force and horizontal displacement of outer frame-tube structure under three typical horizontal loads are presented, which consider the shear lag effect. Then, based on the stress calculation formula of the outer frame-tube structure under separate forces, the formulas for calculating the internal force and the horizontal displacement of the outer frame-tube structure under three typical horizontal loads are presented. The force method and differential equation method are used to list the calculation formulas of Liang Zhu's internal force and horizontal displacement considering the shear lag effect when the frame core tube is subjected to the whole force.) the calculation formula is used to calculate the column axial force of a typical frame core tube structure. And the calculation of horizontal displacement, The results of separate forces acting on the outer frame and the results calculated by the equivalent continuum force method and the equivalent continuum differential equation method when the frame core tube structure is subjected to the whole force are obtained. The results are compared. Finite element software ANSYS is used to model the core tube structure of the frame. The accuracy of the method is verified by comparing the results of finite element analysis with the results of manual calculation based on continuous method. Based on the equivalent continuum method, a simplified finite element modeling method for high-rise frame core tube structure is proposed, which means that the outer frame is equivalent to orthotropic plate. By defining the material parameters of plate thickness and anisotropic plate, the modeling of external complex frame structure is completed. The modeling time of complex high-rise model can be greatly reduced. The comparison analysis of water calm load and dynamic characteristics between the simplified frame core tube structure model and the integral modeling model is carried out. The feasibility of simplified modeling method is verified. Through comparison and analysis, it is concluded that the equivalent continuous manual calculation method can simulate the mechanical characteristics of high-rise frame core tube structure with certain accuracy, but the calculation is cumbersome and practical. The simplified modeling method proposed in this paper can be used to estimate the building and provide a checking measure for the whole modeling analysis in the final stage of design.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU973.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鞏玉發(fā);郎威;邢程程;;平面鋼筋混凝土框架結(jié)構(gòu)優(yōu)化[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2016年01期

2 曹金鳳;陳棟;李明珠;;基于ANSYS的高層框筒結(jié)構(gòu)模態(tài)分析[J];西部探礦工程;2010年04期

3 朱紅濤;;ANSYS軟件中鋼筋混凝土單元SOLID65的應(yīng)用[J];黑龍江科技信息;2008年29期

4 王海波;陳伯望;沈蒲生;;框筒結(jié)構(gòu)考慮負(fù)剪力滯效應(yīng)的簡(jiǎn)化分析[J];計(jì)算力學(xué)學(xué)報(bào);2006年06期

5 李義強(qiáng);彭正中;王新敏;;基于ANSYS的鋼筋混凝土簡(jiǎn)支梁極限承載力分析[J];石家莊鐵道學(xué)院學(xué)報(bào);2006年01期

6 沈蒲生;孟煥陵;;框筒結(jié)構(gòu)梁柱截面基于剪力滯最小的合理高度[J];建筑科學(xué)與工程學(xué)報(bào);2005年03期

7 王華僑;結(jié)構(gòu)有限元分析中的網(wǎng)格劃分技術(shù)及其應(yīng)用實(shí)例[J];CAD/CAM與制造業(yè)信息化;2005年01期

8 陸鐵堅(jiān),余志武,蔣友良;高層建筑筒體結(jié)構(gòu)三維靜力分析的改進(jìn)條元法[J];中南大學(xué)學(xué)報(bào)(自然科學(xué)版);2004年01期

9 劉開(kāi)國(guó);變截面高層框筒結(jié)構(gòu)的剪力滯后系數(shù)[J];建筑結(jié)構(gòu);2003年05期

10 黃本才;高層建筑風(fēng)振系數(shù)簡(jiǎn)化方法和實(shí)用計(jì)算表格[J];建筑結(jié)構(gòu)學(xué)報(bào);2000年03期

相關(guān)碩士學(xué)位論文 前4條

1 戴文昊;重慶市渝中區(qū)高九路大底盤多塔高層結(jié)構(gòu)靜動(dòng)力數(shù)值分析研究[D];沈陽(yáng)大學(xué);2013年

2 高雁;筒體結(jié)構(gòu)剪力滯后效應(yīng)研究及其簡(jiǎn)化分析[D];重慶大學(xué);2006年

3 張玉芳;高層建筑框筒結(jié)構(gòu)簡(jiǎn)化分析方法研究[D];湖南大學(xué);2005年

4 鄭衛(wèi)國(guó);小高層鋼結(jié)構(gòu)住宅體系及性能研究[D];西北工業(yè)大學(xué);2005年

，

本文編號(hào)：1679463