本文選題：錯列支撐框架結(jié)構(gòu) + 防屈曲支撐　； 參考：《大連理工大學》2015年碩士論文

【摘要】：隨著城市人口集中、用地緊張以及商業(yè)競爭的激烈化,越來越多的土木工程結(jié)構(gòu)采用高層建筑。高層建筑中框架結(jié)構(gòu)的使用十分普遍,帶支撐的框架結(jié)構(gòu)可以有效地降低結(jié)構(gòu)的側(cè)向位移,但在強震作用下支撐易產(chǎn)生屈曲,造成支撐部位的破壞和失效,其滯回耗能作用會大大減弱,從而使整體結(jié)構(gòu)的減震性能降低。為了解決普通支撐受壓屈曲和滯回性能差的問題,國外學者研究出一種性能優(yōu)良的防屈曲支撐(BRB)裝置。防屈曲支撐在抵御大震時的能力更強,大震后即使防屈曲支撐發(fā)生了較大屈服,也能夠很方便地更換,不影響建筑整體使用。鑒于防屈曲支撐和錯列鋼支撐框架結(jié)構(gòu)的優(yōu)點,本文提出了一種錯列防屈曲支撐框架結(jié)構(gòu)布置方案體系,主要開展了以下工作：(1)提出了錯列防屈曲支撐框架結(jié)構(gòu),給出了錯列防屈曲支撐框架結(jié)構(gòu)的布置形式；總結(jié)了防屈曲支撐設(shè)計中需要的相關(guān)參數(shù)取值方法,并對改進后的Bouc-Wen模型進行了相關(guān)公式的推導,建立了可以通過數(shù)學方法近似求解模型的直接求解表達式,沒有迭代過程,不需要收斂區(qū)間,可以通過手算求解方程。(2)采用不同的BRB布置方案,對無支撐框架結(jié)構(gòu)、錯列布置BRB框架結(jié)構(gòu)和普通布置BRB框架結(jié)構(gòu)分別進行了Push-over分析,通過對幾種不同框架結(jié)構(gòu)的塑性鉸發(fā)展趨勢和途徑、基底剪力-位移曲線以及能力譜和需求譜曲線的研究,得到了錯列布置BRB框架結(jié)構(gòu)與普通布置的BRB框架結(jié)構(gòu)具有相似的塑性鉸發(fā)展趨勢,提出兩種改進的錯列布置BRB框架結(jié)構(gòu)模型,得到了造價更低抗震性能無明顯下降的支撐布置方式,驗證了錯列防屈曲支撐框架結(jié)構(gòu)在實際工程中使用的可行性。(3)利用SAP2000軟件分別對無支撐、普通防屈曲支撐及錯列防屈曲支撐的框架結(jié)構(gòu)進行了動力特性分析和地震彈塑性時程分析,通過對比分析驗證了錯列防屈曲支撐框架結(jié)構(gòu)體系良好的抗震性能和優(yōu)越的經(jīng)濟效益。
[Abstract]:With the concentration of urban population, the shortage of land and the fierce competition of commerce, more and more civil engineering structures adopt high-rise buildings. The use of frame structure in high-rise buildings is very common. The braced frame structure can effectively reduce the lateral displacement of the structure, but the bracing is prone to buckle under the action of strong earthquake, resulting in the failure and failure of the support. The hysteretic energy dissipation will be weakened greatly, and the seismic absorption performance of the whole structure will be reduced. In order to solve the problem of poor buckling and hysteretic performance of common braces, a kind of anti-buckling brace BRBs with excellent performance has been developed by foreign scholars. The anti-buckling bracing is more capable of resisting strong earthquake. Even if the buckling bracing has a large yield after the earthquake, it can be easily replaced without affecting the overall use of the building. In view of the advantages of anti-buckling bracing and staggered steel braced frame structure, this paper presents a staggered buckling braced frame structure layout system, mainly carried out the following work: 1) the staggered anti-buckling bracing frame structure is proposed. The layout form of staggered buckling braced frame structure is given, and the relevant parameter selection method in buckling bracing design is summarized, and the related formula of improved Bouc-Wen model is deduced. The direct solution expression of the model can be approximately solved by mathematical method. There is no iterative process, no convergence interval is required, and different BRB arrangement schemes can be used to solve the equation by hand. The staggered BRB frame structure and the general arrangement BRB frame structure are analyzed by Push-over. The development trend and approach of plastic hinge of several different frame structures, the base shear displacement curve, the capacity spectrum and the demand spectrum curve are studied. The development trend of plastic hinge of staggered BRB frame structure is similar to that of common BRB frame structure. Two improved staggered arrangement BRB frame structure models are proposed. The bracing arrangement with lower cost and less seismic performance is obtained, which verifies the feasibility of using staggered buckling braced frame structure in practical engineering. The dynamic characteristics and seismic elastic-plastic time-history analysis of frame structures with common buckling braces and staggered buckling braces are analyzed. Through comparative analysis, the good seismic performance and superior economic benefit of staggered buckling braced frame structure system are verified.
【學位授予單位】：大連理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU973.13;TU973.31

【參考文獻】

相關(guān)期刊論文 前10條

1 張家廣;吳斌;梅洋;;基于OpenSees的防屈曲支撐加固鋼筋混凝土框架數(shù)值模擬[J];防災減災工程學報;2014年05期

2 張s，

本文編號：1832289