【摘要】：在高層鋼框架結(jié)構(gòu)設(shè)計(jì)中，雖然純框架結(jié)構(gòu)具有很好的延性，但是抗側(cè)剛度較小，橫向荷載作用下結(jié)構(gòu)的水平位移較大，因此抗側(cè)力構(gòu)件的選取和設(shè)計(jì)非常重要。普通支撐框架彈性階段剛度較大，延性較小，而且在橫向荷載作用下，支撐容易受壓屈曲使結(jié)構(gòu)喪失承載力。屈曲約束支撐可以克服普通支撐受壓屈曲的問題，經(jīng)過合理的設(shè)計(jì)屈曲約束支撐不僅可以增強(qiáng)框架的剛度，而且能夠保證支撐在罕遇地震下率先屈服，防止主體結(jié)構(gòu)遭到破壞，從而提高整體結(jié)構(gòu)的抗震性能。 在我國屈曲約束支撐的實(shí)際工程應(yīng)用尚處于初步階段，如何進(jìn)行合理的設(shè)計(jì)是一個(gè)值得研究的實(shí)際問題，，因此探索一種實(shí)際可行的屈曲約束支撐的設(shè)計(jì)方法是非常必要的。 首先本文基于國內(nèi)外大量的研究成果及設(shè)計(jì)理論，經(jīng)過計(jì)算分析與對(duì)比提出了一種簡便可行的屈曲約束支撐框架結(jié)構(gòu)的設(shè)計(jì)方法。 其次利用本文提出的設(shè)計(jì)方法進(jìn)行屈曲約束支撐鋼框架結(jié)構(gòu)設(shè)計(jì)，采用Midas軟件對(duì)屈曲約束支撐鋼框架結(jié)構(gòu)和普通支撐鋼框架結(jié)構(gòu)進(jìn)行罕遇地震下的時(shí)程分析。并提取兩種結(jié)構(gòu)的基底剪力、層間位移角進(jìn)行對(duì)比分析。結(jié)果表明罕遇地震下屈曲約束支撐能夠耗散較多的地震能量，有效的減小結(jié)構(gòu)層間位移及基底剪力。 最后對(duì)屈曲約束支撐鋼框架結(jié)構(gòu)進(jìn)行Pushover分析，得到結(jié)構(gòu)多遇地震及罕遇地震時(shí)的性能點(diǎn)。屈曲約束支撐在多遇地震時(shí)為彈性狀態(tài)，其作用與普通支撐相同。在罕遇地震下屈曲約束支撐的滯回耗能效果明顯，增大了結(jié)構(gòu)的阻尼，提高鋼框架結(jié)構(gòu)的抗震性能。經(jīng)過合理設(shè)計(jì)的屈曲約束支撐鋼框架結(jié)構(gòu)，通過查看屈曲約束支撐鋼框架結(jié)構(gòu)性能點(diǎn)及其前四步與后一步的鉸狀態(tài)，發(fā)現(xiàn)能夠達(dá)到建筑抗震設(shè)計(jì)規(guī)范的要求。
[Abstract]:In the design of high-rise steel frame structure, although the pure frame structure has good ductility, but the lateral stiffness is small, the horizontal displacement of the structure under transverse load is larger, so it is very important to select and design the anti-lateral force member. In the elastic stage of the common braced frame, the stiffness is larger and the ductility is smaller, and under the action of the transverse load, the brace is liable to buckling under compression and the bearing capacity of the structure is lost. Buckling-constrained braces can overcome the buckling problem of ordinary braces under compression. Through reasonable design of buckling-constrained braces, not only the stiffness of the frame can be enhanced, but also the brace will yield first under rare earthquakes, thus preventing the main structure from being destroyed. As a result, the seismic performance of the whole structure is improved. In China, the practical engineering application of buckling-constrained braces is still in the preliminary stage. How to design reasonably is a practical problem worthy of study. Therefore, it is necessary to explore a practical and feasible design method of buckling-constrained braces. Firstly, based on a great deal of research results and design theories at home and abroad, a simple and feasible design method of buckling-constrained braced frame structure is put forward through calculation, analysis and comparison. Secondly, the design method proposed in this paper is used to design the buckling-constrained braced steel frame structure. The time-history analysis of the buckling-constrained braced steel frame structure and the ordinary braced steel frame structure under rare earthquake is carried out by using Midas software. The base shear force of the two structures is extracted, and the displacement angle between floors is compared and analyzed. The results show that buckling constrained braces under rare earthquakes can dissipate more seismic energy and effectively reduce the inter-story displacement and base shear force of structures. Finally, the Pushover analysis of the buckling-constrained braced steel frame structure is carried out, and the performance points of the structure under frequent and rare earthquakes are obtained. Buckling-constrained braces are elastic in the event of frequent earthquakes, and their action is the same as that of ordinary braces. The hysteretic energy dissipation effect of buckling-constrained braces under rare earthquakes is obvious, which increases the damping of the structure and improves the seismic performance of steel frame structures. It is found that the steel frame structure with buckling-constrained braced structure can meet the requirements of the seismic design code of buildings by examining the performance points and the hinge states of the first four steps and the next step of the buckling-constrained braced steel frame structure.
【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)】：TU391;TU352.11

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 褚洪民;錢洪濤;鄧雪松;周云;;應(yīng)用防屈曲耗能支撐進(jìn)行抗震加固的研究與應(yīng)用[J];四川建筑科學(xué)研究;2007年S1期

2 李國強(qiáng);胡寶琳;;屈曲約束支撐滯回曲線模型和剛度方程的建立[J];地震工程與工程振動(dòng);2007年02期

3 郭子雄;關(guān)于日本阪神地震震害現(xiàn)象的幾點(diǎn)討論[J];華僑大學(xué)學(xué)報(bào)(自然科學(xué)版);1996年02期

4 李國強(qiáng);胡大柱;孫飛飛;;屈曲約束支撐鉸接鋼框架結(jié)構(gòu)體系抗震性能[J];華中科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2008年12期

5 王仁華;俞銘華;謝步瀛;;屈曲約束支撐的缺陷影響分析[J];結(jié)構(gòu)工程師;2008年01期

6 楊溥,李東,李英民,賴明;抗震結(jié)構(gòu)靜力彈塑性分析(Push-over)方法的研究進(jìn)展[J];重慶建筑大學(xué)學(xué)報(bào);2000年S1期

7 葉列平;曲哲;陸新征;馮鵬;;提高建筑結(jié)構(gòu)抗地震倒塌能力的設(shè)計(jì)思想與方法[J];建筑結(jié)構(gòu)學(xué)報(bào);2008年04期

8 汪家銘,中島正愛,陸燁;屈曲約束支撐體系的應(yīng)用與研究進(jìn)展(Ⅰ)[J];建筑鋼結(jié)構(gòu)進(jìn)展;2005年01期

9 陳正誠;鋼側(cè)撐韌性斜撐構(gòu)材之行為與應(yīng)用(Ⅰ)[J];建筑鋼結(jié)構(gòu)進(jìn)展;2005年05期

10 陳正誠;鋼側(cè)撐韌性斜撐構(gòu)材之行為與應(yīng)用(Ⅱ)[J];建筑鋼結(jié)構(gòu)進(jìn)展;2005年06期

本文編號(hào)：2455626