本文選題：框架-核心筒結(jié)構(gòu) + 抗震性能��； 參考：《西安科技大學》2017年碩士論文

【摘要】：框架-核心筒結(jié)構(gòu)具有框架結(jié)構(gòu)空間布置靈活與剪力墻抗側(cè)剛度大的優(yōu)勢,使之成為現(xiàn)代高層建筑常用的結(jié)構(gòu)形式。當外圍框架柱與核心筒之間的距離比較大時,梁截面的高度和樓板的厚度必須增大,這樣會降低有效層高,增加結(jié)構(gòu)自重并且增大造價。因此當框架柱與核心筒之間的距離超過12米時,宜采取增設內(nèi)柱的措施。本文以一棟30層的框架-核心筒結(jié)構(gòu)模型作為研究對象,框架柱與核心筒之間的距離為12米,運用SAP2000建立了12個有限元分析模型,分別考慮內(nèi)柱與核心筒之間距離變化、內(nèi)柱截面尺寸變化和不同連接方式的的影響,進行了結(jié)構(gòu)在水平地震作用下的彈性靜力分析和塑性動力分析,研究了不同內(nèi)柱布置方案對結(jié)構(gòu)抗震性能的影響,對比得出增設內(nèi)柱的框架-核心筒結(jié)構(gòu)的最優(yōu)方案,并為工程建設提出設計建議。研究結(jié)果表明,設置剛性連接框架內(nèi)柱,可以提高結(jié)構(gòu)的整體抗側(cè)剛度;整體抗側(cè)剛度的提高幅度隨著內(nèi)柱與核心筒間距的增大以及內(nèi)柱截面尺寸的減小而減小。當內(nèi)柱沿核心筒均勻?qū)ΨQ布置時,對結(jié)構(gòu)扭轉(zhuǎn)性能影響不大。鉸接內(nèi)柱對結(jié)構(gòu)整體的抗側(cè)剛度和抗扭剛度的影響較小。在線彈性階段,剛接內(nèi)柱能分擔外圍框架柱承擔的樓層剪力和核心筒的基底剪力,而鉸接內(nèi)柱對外圍框架柱和核心筒的剪力影響都很小,反而增大了框架和核心筒之間連梁的彎矩。結(jié)構(gòu)進入塑性階段后,結(jié)構(gòu)的變形和內(nèi)力比線彈性階段顯著增大,內(nèi)柱尺寸引起的變化幅度很小,且各模型之間的變化趨向一致;增設剛接內(nèi)柱能更加充分的發(fā)揮材料的塑性機能。當設置的內(nèi)柱尺寸比外框架柱的縮小100mm左右,內(nèi)柱距核心筒外墻為3米左右時,結(jié)構(gòu)各項受力性能更好,為最佳內(nèi)柱布置方案。
[Abstract]:The frame-core tube structure has the advantages of flexible spatial arrangement of frame structure and large lateral stiffness of shear wall, which makes it a common structural form in modern high-rise buildings. When the distance between the outer frame column and the core tube is large, the height of the beam section and the thickness of the floor must be increased, which will reduce the effective floor height, increase the weight of the structure and increase the cost. Therefore, when the distance between frame column and core cylinder is more than 12 meters, the measures of adding inner column should be taken. In this paper, a 30-story frame-core tube structure model is taken as the research object. The distance between the frame column and the core tube is 12 meters. Using SAP2000, 12 finite element analysis models are established to consider the variation of the distance between the inner column and the core tube, respectively. In this paper, the elastic static analysis and plastic dynamic analysis of the structure under horizontal earthquake are carried out, and the influence of different inner column layout schemes on the seismic performance of the structure is studied. The optimum scheme of frame-core tube structure with inner column is obtained, and the design suggestions for engineering construction are put forward. The results show that the overall lateral stiffness of the structure can be improved by setting rigid connection frame columns, and the increasing amplitude of the overall lateral stiffness decreases with the increase of the distance between the inner column and the core cylinder and the decrease of the cross section size of the inner column. When the inner column is arranged symmetrically along the core tube, it has little effect on the torsional performance of the structure. The effect of hinged inner column on lateral stiffness and torsional stiffness of the whole structure is small. In the on-line elastic stage, the rigid inner column can share the floor shear force of the outer frame column and the base shear force of the core tube, while the hinge inner column has little effect on the external frame column and core tube shear force. On the contrary, the bending moment of the connecting beam between the frame and the core tube is increased. When the structure enters the plastic stage, the deformation and internal force of the structure increase significantly than that of the linear elastic stage, and the change of the size of the inner column is very small, and the variation of each model tends to be the same. The addition of rigid internal column can give full play to the plastic function of the material. When the size of the inner column is smaller than that of the outer frame column about 100mm, and the inner column is about 3 meters from the outer wall of the core cylinder, the mechanical performance of the structure is better, which is the best layout scheme of the inner column.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU973.17;TU973.31

【參考文獻】

相關期刊論文 前10條

1 焦柯;吳桂廣;賈蘇;賴鴻立;;高層混凝土結(jié)構(gòu)優(yōu)化設計方法探討[J];建筑結(jié)構(gòu);2016年21期

2 王斌;史慶軒;吳騫;何偉峰;;RC框架-核心筒結(jié)構(gòu)中核心筒高寬比限值研究[J];建筑結(jié)構(gòu);2016年13期

3 李立偉;;框架—核心筒結(jié)構(gòu)柱網(wǎng)布置方案比較[J];山西建筑;2016年11期

4 鞏玉發(fā);焦少青;;帶水平伸臂加強層框筒結(jié)構(gòu)的非線性地震反應[J];遼寧工程技術(shù)大學學報(自然科學版);2016年03期

5 李偉;;彈性時程分析在結(jié)構(gòu)抗震設計中的應用研究[J];工程建設與設計;2015年10期

6 趙桂峰;李曉芬;張猛;;基于pushover方法的RC框架結(jié)構(gòu)抗震性能評估研究[J];世界地震工程;2015年03期

7 扶長生;張小勇;周立浪;;框架-核心筒結(jié)構(gòu)體系及其地震剪力分擔比[J];建筑結(jié)構(gòu);2015年04期

8 胡妤;趙作周;賀小崗;紀曉東;錢稼茹;;鋼筋混凝土框架-核心筒結(jié)構(gòu)抗震性能研究[J];工程力學;2014年S1期

9 曹青;鄒仁華;鐘國云;伍麗珍;李靜;;SRC-RC豎向混合框架結(jié)構(gòu)靜力彈塑性分析[J];鋼結(jié)構(gòu);2014年04期

10 潘志宏;洪博;;地震動頻譜特性和持時對IDA結(jié)果影響的研究[J];振動與沖擊;2014年05期

相關碩士學位論文 前2條

1 張剛;設置內(nèi)柱的框架—核心筒的抗震性能研究[D];天津大學;2012年

2 夏書丹;城市建設用地地震危害性綜合評價方法的研究[D];北京工業(yè)大學;2005年

，

本文編號：1913713