發(fā)布時(shí)間：2018-04-22 16:33

  本文選題：轉(zhuǎn)換梁 + 墻體開洞�。� 參考：《哈爾濱工程大學(xué)》2014年碩士論文

【摘要】：高層建筑在沿高度方向因使用功能對(duì)空間的需求不同,往往會(huì)設(shè)置轉(zhuǎn)換層結(jié)構(gòu),而轉(zhuǎn)換梁結(jié)構(gòu)由于荷載傳遞路徑明確,便于工程設(shè)計(jì)計(jì)算與分析,已成為實(shí)現(xiàn)垂直轉(zhuǎn)換最廣泛的結(jié)構(gòu)形式。但因結(jié)構(gòu)本身的復(fù)雜性,轉(zhuǎn)換梁的受力性能一直是設(shè)計(jì)中的重難點(diǎn)問題,有關(guān)方面的理論研究還不夠系統(tǒng)、全面,特別是墻體開洞對(duì)轉(zhuǎn)換梁受力性能影響的分析,所以對(duì)墻體開洞轉(zhuǎn)換梁受力性能和變形特征還需進(jìn)一步研究。本文首先通過有限元分析軟件SAP2000和PK對(duì)墻體開洞轉(zhuǎn)換梁受力性能進(jìn)行了分析,其受力性能與洞口寬度、洞口高度及洞口下方墻體高度有關(guān),根據(jù)計(jì)算結(jié)果得出不同洞口尺寸及位置的差異,并給出建議的計(jì)算方法。其次,本文以深梁模型入手,利用彈性力學(xué)基本理論對(duì)墻體滿跨不開洞轉(zhuǎn)換梁的應(yīng)力及位移進(jìn)行了推導(dǎo),給出了應(yīng)力及位移分量的解析解;利用有限單元法對(duì)深梁進(jìn)行了近似求解,將深梁劃分成10等分,求出每根淺梁的應(yīng)力,繪制整個(gè)深梁的應(yīng)力分布。之后介紹了有限元法分析時(shí)的一般過程,對(duì)建筑結(jié)構(gòu)分析中可能需要用到的單元作了簡述,為有限元軟件分析提供理論依據(jù)。最后,本文對(duì)轉(zhuǎn)換梁有限元分析所用的軟件ANSYS及選用的單元進(jìn)行了簡要介紹。用有限元軟件ANSYS對(duì)墻體滿跨不開洞模型、墻體滿跨開中洞模型、墻體滿跨開對(duì)稱邊洞模型進(jìn)行了豎向荷載作用下的應(yīng)力和變形分析。結(jié)果表明:洞口的開設(shè)對(duì)墻體的應(yīng)力分布、轉(zhuǎn)換梁中性軸的位置及框支柱的豎向應(yīng)力都有非常大的影響。
[Abstract]:Because of the different space requirement of the function of the high-rise building along the height direction, the transfer layer structure is often set up, while the transfer beam structure is convenient for engineering design calculation and analysis because of the clear load transfer path. Has become the most extensive structural form of vertical conversion. However, due to the complexity of the structure itself, the mechanical performance of the transfer beam has always been a difficult and important problem in the design. The theoretical research on the related aspects is not systematic and comprehensive, especially the analysis of the influence of the wall opening on the mechanical performance of the transfer beam. Therefore, the mechanical behavior and deformation characteristics of the wall open-hole transfer beam need further study. In this paper, the finite element analysis software SAP2000 and competition are used to analyze the mechanical behavior of the wall opening transfer beam, which is related to the width of the hole, the height of the hole and the height of the wall below the hole. According to the calculation results, the difference of the size and position of different openings is obtained, and the proposed calculation method is given. Secondly, based on the deep beam model and the basic theory of elasticity, the stress and displacement of the full span transition beam are deduced, and the analytical solution of the stress and displacement component is given. The finite element method is used to approximate the deep beam. The deep beam is divided into 10 equal parts. The stress of each shallow beam is obtained and the stress distribution of the whole deep beam is plotted. Then the general process of finite element analysis is introduced, and the elements that may be used in the analysis of building structure are briefly described, which provides a theoretical basis for the analysis of finite element software. Finally, this paper briefly introduces the software ANSYS and the selected elements used in the finite element analysis of the transfer beam. The finite element software ANSYS is used to analyze the stress and deformation of the full span opening model, the wall full span opening model, the wall full span symmetrical side hole model and the vertical load model. The results show that the opening of the hole has a great influence on the stress distribution of the wall, the position of the neutral axis of the transfer beam and the vertical stress of the frame support.
【學(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU973.3

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本文編號(hào)：1788024