本文關(guān)鍵詞：不規(guī)則高層鋼結(jié)構(gòu)地震響應(yīng)及消能減震分析　出處：《安徽建筑大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 不規(guī)則結(jié)構(gòu) 層間位移角 模態(tài)分析 反應(yīng)譜分析 動(dòng)力特性 非線(xiàn)性時(shí)程分析 消能減震分析

【摘要】：隨著經(jīng)濟(jì)建設(shè)的不斷發(fā)展，人們已經(jīng)設(shè)計(jì)出許多形式新穎、獨(dú)特的不規(guī)則高層建筑。近年來(lái)，由于鋼材具有材質(zhì)均勻，強(qiáng)度易于得到保證，結(jié)構(gòu)的可靠性大，輕質(zhì)高強(qiáng)等特點(diǎn)被廣泛應(yīng)用于高層建筑中。每年，全球由于地震造成的損失不計(jì)其數(shù)，而且隨著城市人口密度不斷加大，，強(qiáng)震帶來(lái)的損害將更為嚴(yán)重。因此，對(duì)不規(guī)則高層鋼結(jié)構(gòu)的地震響應(yīng)及消能減震研究是很有必要的。 首先本文主要介紹了不規(guī)則結(jié)構(gòu)的發(fā)展概況以及幾種抗震理論分析。然后使用大型有限元計(jì)算軟件SAP2000對(duì)某綜合辦公大樓高層鋼結(jié)構(gòu)進(jìn)行了模態(tài)分析、反應(yīng)譜分析和時(shí)程分析以及消能減震分析在多遇以及罕遇地震下。最后得到了該結(jié)構(gòu)的樓層位移和層間位移角。主要內(nèi)容如下： （1）本文利用SAP2000建立了設(shè)置橫向支撐的有限元模型，通過(guò)模態(tài)分析獲得了該結(jié)構(gòu)的前12階自振周期和質(zhì)量參與系數(shù)并研究了該結(jié)構(gòu)的動(dòng)力特性。 （2）在多遇地震下對(duì)加橫向支撐和不加橫向支撐模型體系進(jìn)行反應(yīng)譜分析和彈性時(shí)程分析。通過(guò)對(duì)這兩種結(jié)果對(duì)比來(lái)研究該結(jié)構(gòu)的地震響應(yīng)和支撐對(duì)結(jié)構(gòu)剛度的影響。 （3）本文對(duì)加橫向支撐的模型進(jìn)行了在罕遇地震下的非線(xiàn)性時(shí)程分析得到了該結(jié)構(gòu)的地震響應(yīng)，并通過(guò)對(duì)塑性鉸的分析發(fā)現(xiàn)結(jié)構(gòu)的薄弱點(diǎn)。 （4）通過(guò)在模型上設(shè)置粘彈性阻尼器來(lái)研究結(jié)構(gòu)在非線(xiàn)性時(shí)程分析下的減震效果。通過(guò)對(duì)設(shè)置粘彈性阻尼器和沒(méi)有設(shè)置粘彈性阻尼器模型結(jié)果對(duì)比得出減震結(jié)構(gòu)的優(yōu)越性。 本文由安徽省高等學(xué)校自然科學(xué)研究重大項(xiàng)目《非規(guī)則結(jié)構(gòu)地震反應(yīng)特性與抗震減震研究》（編號(hào)：KJ2014ZD07）資助。
[Abstract]:With the continuous development of economic construction, people have designed many new and unique irregular high-rise buildings. In recent years, due to the uniform material of steel, the strength is easy to be guaranteed, and the reliability of the structure is great. Light, high strength and other characteristics are widely used in high-rise buildings. Every year, the damage caused by earthquakes is innumerable, and with the increasing of urban population density, the damage caused by strong earthquakes will be more serious. It is necessary to study the seismic response and energy dissipation of irregular tall steel structures. This paper mainly introduces the development of irregular structure and several seismic theory analysis. Then, the modal analysis of high-rise steel structure of a comprehensive office building is carried out by using the large finite element calculation software SAP2000. Analysis. The response spectrum analysis, time history analysis and energy dissipation analysis are used in the analysis of frequent and rare earthquakes. Finally, the floor displacement and interstory displacement angles of the structure are obtained. The main contents are as follows: In this paper, the finite element model of transverse bracing is established by using SAP2000. The first 12 order natural vibration period and mass participation coefficient of the structure are obtained by modal analysis and the dynamic characteristics of the structure are studied. 2). Response spectrum analysis and elastic time history analysis of the model system with and without lateral bracing are carried out under frequent earthquakes. The effects of seismic response and bracing on the stiffness of the structure are studied by comparing the two results. . 3) in this paper, the nonlinear time-history analysis of the model with lateral braces under rare earthquakes is carried out to obtain the seismic response of the structure, and the weak points of the structure are found through the analysis of the plastic hinge. 4). By setting viscoelastic dampers on the model to study the vibration absorption effect of structures under nonlinear time-history analysis, the model results of viscoelastic dampers and those without viscoelastic dampers are compared. Transgression. This paper is supported by the important project of natural science research in colleges and universities of Anhui Province, "study on Seismic response characteristics and Seismic absorption of irregular structures" (No.: KJ2014ZD07).
【學(xué)位授予單位】：安徽建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TU973.31;TU973.13

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本文編號(hào)：1411541