發(fā)布時(shí)間：2018-11-11 20:32

【摘要】：框架結(jié)構(gòu)和框架-支撐結(jié)構(gòu)在高層建筑中應(yīng)用非常廣泛。純框架結(jié)構(gòu)的抗側(cè)剛度有限，在地震和強(qiáng)風(fēng)荷載作用下，側(cè)向位移較大，限制了它的應(yīng)用高度�？蚣苤谓Y(jié)構(gòu)在某種程度上提高了結(jié)構(gòu)的抗側(cè)剛度，但其在強(qiáng)震作用下易產(chǎn)生受壓屈曲，極易導(dǎo)致支撐自身或連接的失效甚至破壞。同時(shí)支撐屈服后很難有效耗能，降低了結(jié)構(gòu)的抗震能力。目前發(fā)展起來的防屈曲耗能支撐有效解決了普通受壓屈曲的問題。本文在一定的理論研究和試驗(yàn)的基礎(chǔ)上，研究防屈曲耗能支撐在實(shí)際工程中的應(yīng)用和可行性。本文主要從以下幾個(gè)方面研究： 1）首先以河南省新鄉(xiāng)市某九層框架結(jié)構(gòu)為例，運(yùn)用有限元分析軟件SAP2000，對原框架結(jié)構(gòu)、框架加普通支撐結(jié)構(gòu)及框架加防屈曲耗能支撐結(jié)構(gòu)進(jìn)行振型分解反應(yīng)譜分析及線性時(shí)程分析，對比三種結(jié)構(gòu)體系的周期、層間位移、基底剪力及支撐軸力等地震響應(yīng)，繪制出防屈曲耗能支撐在小震、中震、大震下的滯回曲線。結(jié)果表明，小震下防屈曲耗能支撐具有與普通支撐基本一致的抗震性能；在中震及大震下，防屈曲耗能支撐進(jìn)入工作耗能，通過滯回耗散地震能量，耗能減震效果明顯。 2）在明確了防屈曲耗能支撐的優(yōu)勢之后，本文以西安市某五層框架結(jié)構(gòu)為例，通過D值法計(jì)算出結(jié)構(gòu)的抗側(cè)剛度，在給定目標(biāo)位移的前提下，根據(jù)支撐剛度與框架抗側(cè)剛度比λ計(jì)算出防屈曲耗能支撐面積。并對防屈曲耗能支撐多種布置方案進(jìn)行罕遇地震下的靜力彈塑性分析，通過對比各種方案下塑性鉸的發(fā)展情況及地震響應(yīng)（周期、層間位移、基底剪力等）得出在支撐面積一定的情況下何種布置方案最佳。以其中兩種方案為例，通過得出的基底剪力-頂點(diǎn)位移曲線、性能點(diǎn)、層間位移角推覆過程進(jìn)一步說明防屈曲耗能支撐能夠在罕遇地震下有更充足的安全儲備。 3）在討論了防屈曲耗能支撐的優(yōu)化布置后，本文以一變更工程（設(shè)防烈度提高）為例，，在原構(gòu)件截面尺寸、構(gòu)件配筋不變的前提下，通過增設(shè)防屈曲耗能支撐，得到規(guī)范限值內(nèi)的地震響應(yīng)。由此說明防屈曲耗能支撐在抗震加固或設(shè)計(jì)變更工程中有非常好的應(yīng)用價(jià)值。
[Abstract]:Frame structure and frame-braced structure are widely used in high-rise buildings. The lateral stiffness of the pure frame structure is limited, and the lateral displacement is larger under earthquake and strong wind loads, which limits its application height. The frame braced structure improves the lateral stiffness of the structure to some extent, but it is easy to produce compression buckling under the action of strong earthquake, which easily leads to the failure and even failure of the bracing itself or connection. At the same time, it is difficult to consume energy effectively after bracing yield, which reduces the seismic capacity of the structure. The current development of anti-buckling energy dissipation braces effectively solves the problem of general compression buckling. On the basis of theoretical research and experiment, this paper studies the application and feasibility of anti-buckling energy dissipation support in practical engineering. This paper mainly studies from the following aspects: 1) take a nine-story frame structure in Xinxiang City, Henan Province as an example, and use the finite element analysis software SAP2000, to analyze the original frame structure. The vibration mode decomposition response spectrum analysis and linear time history analysis of frame and general braced structure and frame structure with anti-buckling energy dissipation bracing are carried out, and the seismic responses of the three structural systems, such as period, interstory displacement, base shear force and bracing axial force, are compared. The hysteretic curves of anti-buckling energy dissipation support under small, moderate and large earthquakes are drawn. The results show that the anti-buckling energy dissipation braces have the same seismic performance as the common braces under small earthquakes, and under moderate and strong earthquakes, the anti-buckling energy dissipation braces enter into the work energy consumption, and the energy dissipation effect is obvious through the hysteretic dissipation of seismic energy. 2) after defining the advantages of anti-buckling and energy-dissipation bracing, taking a five-story frame structure in Xi'an as an example, the lateral stiffness of the structure is calculated by D value method, and the displacement of the target is given. According to the ratio of bracing stiffness to lateral stiffness of frame, the area of anti-buckling energy dissipation bracing is calculated. The static elastic-plastic analysis of various arrangement schemes of anti-buckling energy dissipation bracing is carried out under rare earthquake. By comparing the development of plastic hinge and seismic response (period, interstory displacement) under various schemes, Base shear, etc.) to get the best arrangement under the condition of certain supporting area. Taking two schemes as an example, the shear-vertex displacement curve, the performance point and the interstory displacement angle push-over process obtained further show that the anti-buckling energy dissipation braces have more sufficient safety reserves under rare earthquakes. 3) after discussing the optimal arrangement of the anti-buckling energy dissipation braces, this paper takes a change engineering (increasing the fortification intensity) as an example, under the premise of the original member section size and the reinforcement constant, by adding the anti-buckling energy dissipation bracing. The seismic response within the specified limit is obtained. It shows that the buckling-proof energy dissipation braces have very good application value in seismic reinforcement or design change engineering.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU973.31

【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 趙俊賢;吳斌;;防屈曲支撐的工作機(jī)理及穩(wěn)定性設(shè)計(jì)方法[J];地震工程與工程振動(dòng);2009年03期

3 賈明明;張素梅;呂大剛;蔣守蘭;;基于Benchmark模型的抑制屈曲支撐耗能減振作用分析[J];地震工程與工程振動(dòng);2009年03期

4 羅開海;程紹革;白雪霜;榮維生;;屈曲約束耗能支撐力學(xué)性能分析[J];工程抗震與加固改造;2007年02期

5 張志陽;;防屈曲支撐框架結(jié)構(gòu)的設(shè)計(jì)與分析[J];城市軌道交通研究;2007年07期

6 唐榮;鄧雪松;周云;;不同寬厚比對三重方鋼管防屈曲耗能支撐性能影響分析[J];鋼結(jié)構(gòu);2011年11期

7 錢稼茹,羅文斌;靜力彈塑性分析——基于性能/位移抗震設(shè)計(jì)的分析工具[J];建筑結(jié)構(gòu);2000年06期

8 郭彥林,劉建彬,蔡益燕,鄧科;結(jié)構(gòu)的耗能減震與防屈曲支撐[J];建筑結(jié)構(gòu);2005年08期

9 高向宇;杜海燕;張惠;梁峰;;國標(biāo)Q235熱軋鋼材防屈曲支撐抗震性能試驗(yàn)研究[J];建筑結(jié)構(gòu);2008年03期

10 周建龍;汪大綏;姜文偉;包聯(lián)進(jìn);陳建興;黃永強(qiáng);徐小華;;防屈曲耗能支撐在世博中心工程中的應(yīng)用研究[J];建筑結(jié)構(gòu);2009年05期

本文編號：2326064