【摘要】：在高層建筑混合結(jié)構(gòu)中，框架-核心筒結(jié)構(gòu)是應(yīng)用最多的一種結(jié)構(gòu)類型。對(duì)于這種結(jié)構(gòu)體系，國內(nèi)外工程界尚存有爭(zhēng)議，認(rèn)為該體系的抗震性能主要取決于鋼筋混凝土核心筒，它相對(duì)來說剛度有余而強(qiáng)度不足，而鋼或型鋼混凝土框架則正好相反，這使得混合結(jié)構(gòu)在抗震性能上不協(xié)調(diào)，如何有效評(píng)估其抗震性能顯得尤為重要。而我國規(guī)范并未給出此類體系整體結(jié)構(gòu)和構(gòu)件的變形性能的量化指標(biāo)。因此，，研究采用變形指標(biāo)來評(píng)估此類結(jié)構(gòu)的抗震性能有著重要的現(xiàn)實(shí)意義。 本文根據(jù)高層建筑混合結(jié)構(gòu)的變形特點(diǎn)，將內(nèi)核心筒結(jié)構(gòu)層間位移分為受力層間位移和非受力層間位移，分析各豎向構(gòu)件樓層處截面轉(zhuǎn)角的變化規(guī)律，層間位移角和受力層間位移角沿層高的變化規(guī)律；在我國現(xiàn)行規(guī)范的基礎(chǔ)上，定義混合結(jié)構(gòu)和構(gòu)件的性能水準(zhǔn)及其劃分方法，采用受力層間位移角和層間位移角作為混合結(jié)構(gòu)整體變形的雙重控制指標(biāo)，采用塑性轉(zhuǎn)角作為構(gòu)件變形的控制指標(biāo)，參考已有研究成果和統(tǒng)計(jì)大量剪力墻試驗(yàn)數(shù)據(jù)，對(duì)此類結(jié)構(gòu)和剪力墻構(gòu)件性能指標(biāo)的量化進(jìn)行研究，引用美國規(guī)范FEMA356對(duì)梁柱構(gòu)件轉(zhuǎn)角變形的規(guī)定，最終建立起一套分析混合結(jié)構(gòu)及其構(gòu)件抗震性能的變形指標(biāo)體系；在上述基礎(chǔ)上，通過三維結(jié)構(gòu)非線性分析與性能評(píng)估軟件Perform-3D，采用彈塑性時(shí)程分析方法從結(jié)構(gòu)層面、構(gòu)件層面依次采用層間位移角、構(gòu)件轉(zhuǎn)角變形指標(biāo)對(duì)某實(shí)際高層混合結(jié)構(gòu)進(jìn)行結(jié)構(gòu)及其構(gòu)件的抗震性能分析和對(duì)比研究，結(jié)果表明從構(gòu)件層面采用構(gòu)件轉(zhuǎn)角變形指標(biāo)對(duì)結(jié)構(gòu)進(jìn)行抗震性能分析的效果優(yōu)于從結(jié)構(gòu)層面采用單一的層間位移角指標(biāo)分析結(jié)構(gòu)的抗震性能。本論文研究成果對(duì)工程實(shí)際有重要參考價(jià)值。
[Abstract]:Among the hybrid structures of high-rise buildings, frame-core tube structure is one of the most widely used structural types. For this kind of structural system, there is still controversy in the engineering field at home and abroad. It is considered that the seismic performance of the system mainly depends on the reinforced concrete core tube, which is relatively more than stiffness and insufficient strength, while the steel or steel reinforced concrete frame is just the opposite, which makes the seismic performance of the hybrid structure uncoordinated, so how to effectively evaluate its seismic performance is particularly important. However, the Chinese code does not give the quantitative index of the overall structure of this kind of system and the deformation performance of the components. Therefore, it is of great practical significance to use deformation index to evaluate the seismic performance of this kind of structure. According to the deformation characteristics of the mixed structure of high-rise building, the interstory displacement of the inner core tube structure is divided into the stress interstory displacement and the unloaded interstory displacement, and the variation law of the section rotation angle at the floor of each vertical member and the variation law of the interstory displacement angle and the stress interstory displacement angle along the height of the story are analyzed in this paper. On the basis of the current code of our country, the performance level and division method of hybrid structure and component are defined. The stress interstory displacement angle and interstory displacement angle are used as the double control index of the overall deformation of the hybrid structure, and the plastic rotation angle is used as the control index of component deformation. Referring to the existing research results and statistics, a large number of shear wall test data are used to quantify the performance index of this kind of structure and shear wall members. According to the American code FEMA356 on the angular deformation of beam-column members, a set of deformation index system for analyzing the seismic performance of hybrid structures and their members is established. On the basis of the above, through the three-dimensional structural nonlinear analysis and performance evaluation software Perform-3D, the elastic-plastic time history analysis method is used to analyze and compare the seismic performance of a practical high-rise hybrid structure and its members from the structural level, the member level adopts interstory displacement angle in turn, and the member rotation angle deformation index is used to analyze and compare the seismic performance of a practical high-rise hybrid structure. The results show that the seismic performance of the structure is better than that of the structure by using a single interstory displacement angle index from the structural level. The research results of this paper have important reference value to the engineering practice.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU973.31

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本文編號(hào)：2509587