本文關(guān)鍵詞： 高層建筑 短肢剪力墻結(jié)構(gòu) 抗震性能 墻肢厚度 連梁高度　出處：《蘭州交通大學》2014年碩士論文　論文類型：學位論文

【摘要】：21世紀是城市的世紀，，我國正處在城市化進程加快發(fā)展階段，越來越多的人涌進城市，如何在有限的土地上建造抗震性能良好并且經(jīng)濟合理的高層建筑就成了人們需要去研究的方向。而在高層建筑結(jié)構(gòu)體系中，短肢剪力墻結(jié)構(gòu)作為一種新型結(jié)構(gòu)體系，吸收了框架結(jié)構(gòu)和普通剪力墻結(jié)構(gòu)的優(yōu)點，既節(jié)省了材料用量又具有良好的承載能力，另外在結(jié)構(gòu)布置上還避免了露梁露柱等現(xiàn)象，能夠較好的滿足建筑使用功能，得到了住戶、開發(fā)商和設(shè)計人員的好評。短肢剪力墻結(jié)構(gòu)是由普通剪力墻結(jié)構(gòu)和異形柱框架結(jié)構(gòu)演變而來，對于它的研究，特別是在整體結(jié)構(gòu)的地震反應(yīng)方面的研究相對較少。為了充分了解其抗震性能，本文以西安市某高度為50.4m的剪力墻結(jié)構(gòu)高層住宅樓為背景，在適當簡化的基礎(chǔ)上，通過縮短部分墻肢的方法設(shè)計出短肢剪力墻結(jié)構(gòu)方案和異形柱框架剪力墻結(jié)構(gòu)方案，并通過PKPM軟件驗證了這兩種方案的軸壓比、位移比和剛重比等相關(guān)指標，從而說明了方案的合理性。然后，利用大型通用有限元軟件ANSYS建立普通剪力墻、短肢剪力墻和異形柱框架剪力墻這三種結(jié)構(gòu)的模型，將短肢剪力墻結(jié)構(gòu)與這兩種相近的結(jié)構(gòu)體系進行比較分析，對比其在抗震性能方面的差異，綜合評價短肢剪力墻結(jié)構(gòu)的抗震性能，同時針對短肢剪力墻結(jié)構(gòu)，改變其墻肢厚度和連梁高度，分析這兩種構(gòu)件對結(jié)構(gòu)整體性能的影響。本文主要工作如下： 1.通過對相關(guān)文獻的收集和檢索，介紹了短肢剪力墻結(jié)構(gòu)相關(guān)特點，并且從理論研究和實驗研究兩個方面論述了短肢墻結(jié)構(gòu)的研究現(xiàn)狀。 2.總結(jié)并介紹了結(jié)構(gòu)抗震分析的理論和方法，包括靜力理論、反應(yīng)譜理論和時程分析理論。 3.對短肢剪力墻結(jié)構(gòu)與異形柱框架剪力墻結(jié)構(gòu)和普通剪力墻結(jié)構(gòu)進行模態(tài)分析，比較其自振特性之間的差異，然后針對短肢剪力墻結(jié)構(gòu)，改變其墻肢厚度和連梁高度，分析這兩個因素對結(jié)構(gòu)自振特性的影響。 4.分別對短肢剪力墻結(jié)構(gòu)與異形柱框架剪力墻結(jié)構(gòu)和普通剪力墻結(jié)構(gòu)進行振型分解反應(yīng)譜分析和彈性時程分析，對比結(jié)構(gòu)變形和受力的差異。并且，分析了墻肢和連梁這兩種構(gòu)件對其抗震性能的影響。 5.對結(jié)構(gòu)進行罕遇地震下的靜力彈塑性分析，進一步對比結(jié)構(gòu)在罕遇地震下的整體抗側(cè)移剛度、承載能力、延性和耗能能力，對短肢剪力墻結(jié)構(gòu)在大震作用下的可靠性做出更加全面的評估。 通過本文的分析可以為短肢剪力墻結(jié)構(gòu)在高層建筑中的應(yīng)用以及該結(jié)構(gòu)體系的抗震設(shè)計提供相應(yīng)的參考。
[Abstract]:21th century is the century of the city, our country is in the urbanization process speed up the development stage, more and more people flock into the city. It is necessary to study how to build high-rise buildings with good seismic performance and reasonable economy on limited land. In the high-rise building system, the short-leg shear wall structure is a new type of structural system. It absorbs the advantages of frame structure and common shear wall structure, saves the material consumption and has good bearing capacity, and avoids the phenomena of exposed beam and open column in the structure layout, which can better meet the function of building. The short leg shear wall structure is evolved from the ordinary shear wall structure and the special-shaped column frame structure. In order to fully understand the seismic performance of the whole structure, in order to fully understand its seismic performance, this paper takes a high-rise residential building with shear wall structure of 50.4m height in Xi'an as the background, on the basis of proper simplification. The short leg shear wall structure scheme and the special-shaped column frame shear wall structure scheme are designed by the method of shortening part of the wall limb, and the relevant indexes such as axial compression ratio, displacement ratio and rigid-weight ratio of the two schemes are verified by PKPM software. The rationality of the scheme is illustrated. Then, the models of three kinds of structures, namely, common shear wall, short leg shear wall and special-shaped column frame shear wall, are established by using the large-scale universal finite element software ANSYS. The short leg shear wall structure is compared with these two similar structure systems, and the difference in seismic performance is compared, and the seismic performance of the short limb shear wall structure is comprehensively evaluated, at the same time, the short leg shear wall structure is analyzed. By changing the thickness of the wall limb and the height of the connecting beam, the influence of these two kinds of members on the overall performance of the structure is analyzed. The main work of this paper is as follows:. 1. Through the collection and retrieval of relevant literature, the characteristics of short leg shear wall structure are introduced, and the current research situation of short leg shear wall structure is discussed from two aspects: theoretical and experimental research. 2. The theories and methods of seismic analysis of structures are summarized and introduced, including static theory, response spectrum theory and time-history analysis theory. 3. The modal analysis of short leg shear wall structure, special-shaped column frame shear wall structure and ordinary shear wall structure is carried out, and the difference between their natural vibration characteristics is compared. Then, the thickness of short leg shear wall structure and the height of connecting beam are changed according to the short leg shear wall structure. The influence of these two factors on the natural vibration characteristics of the structure is analyzed. 4. The mode decomposition response spectrum analysis and elastic time history analysis of short leg shear wall structure, frame shear wall structure with special-shaped column and ordinary shear wall structure are carried out respectively, and the differences of deformation and force are compared. The influence of the wall member and the connecting beam on the seismic performance is analyzed. 5. The static elastic-plastic analysis of the structure under rare earthquake is carried out, and the overall lateral displacement stiffness, bearing capacity, ductility and energy dissipation capacity of the structure under rare earthquake are further compared. A more comprehensive evaluation of the reliability of short-leg shear wall structures under the action of large earthquakes is made. The analysis in this paper can provide a reference for the application of short-leg shear wall structure in high-rise building and the seismic design of the structure system.
【學位授予單位】：蘭州交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU973.16

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