本文選題：鋼結(jié)構(gòu)加層 + 抗震　； 參考：《河北工程大學(xué)》2013年碩士論文

【摘要】：鋼結(jié)構(gòu)加層是目前逐步被推廣的一種房屋增層與改造形式,它具有自重輕、抗震性能好和施工方便等優(yōu)點(diǎn)。在技術(shù)、經(jīng)濟(jì)以及安全性等方面較混凝土結(jié)構(gòu)具有明顯的優(yōu)點(diǎn)。在國(guó)內(nèi)逐漸獲得廣泛的應(yīng)用,但目前設(shè)計(jì)方法也不夠完善,已經(jīng)完成的鋼結(jié)構(gòu)加層工程只對(duì)加層部分進(jìn)行設(shè)計(jì)計(jì)算,施工完全靠經(jīng)驗(yàn),缺乏一定的理論依據(jù)作為指導(dǎo),現(xiàn)有的國(guó)家規(guī)范也不能滿足設(shè)計(jì)的需要。鋼結(jié)構(gòu)加層后與原鋼筋混凝土結(jié)構(gòu)所組成的混合結(jié)構(gòu)的周期、阻尼比、剛度、抗震性能等都發(fā)生了變化,僅對(duì)加層部分進(jìn)行設(shè)計(jì)計(jì)算是不科學(xué)的,必須對(duì)這種混合結(jié)構(gòu)進(jìn)行整體計(jì)算,并且進(jìn)行專門的抗震驗(yàn)算。 本文對(duì)鋼筋混凝土框架結(jié)構(gòu)鋼結(jié)構(gòu)加層課題進(jìn)行了研究。論文概述了鋼結(jié)構(gòu)加層的研究現(xiàn)狀、國(guó)內(nèi)外工程應(yīng)用情況、鋼結(jié)構(gòu)加層構(gòu)造的相關(guān)技術(shù)、地震作用的靜動(dòng)力分析的基本理論和方法及有限元的相關(guān)理論。采用PMSAP有限元分析軟件對(duì)北京市豐臺(tái)區(qū)田各莊某四層鋼筋混凝土框架結(jié)構(gòu)辦公樓頂部加兩層純鋼框結(jié)構(gòu)分別采用振型分解反應(yīng)譜法和動(dòng)力時(shí)程分析法對(duì)混合結(jié)構(gòu)進(jìn)行整體的抗震性能分析。分析結(jié)果表明：原四層鋼筋混凝土框架結(jié)構(gòu)在加兩層鋼結(jié)構(gòu)框架后整個(gè)混合結(jié)構(gòu)的內(nèi)力和位移都有所增大,并在樓層增層處形成薄弱層。加層后整體結(jié)構(gòu)的自振周期較原框架結(jié)構(gòu)有所增長(zhǎng),鋼結(jié)構(gòu)加層能夠減小原框架結(jié)構(gòu)的地震效應(yīng)。
[Abstract]:The addition of steel structure is a kind of building increasing and rebuilding form which is popularized step by step at present. It has the advantages of light weight, good seismic performance and convenient construction. It has obvious advantages over concrete structure in technology, economy and safety. It has been widely used in our country, but the design method is not perfect at present. The steel structure adding layer project has been designed and calculated only, and the construction depends on experience completely, and lacks some theoretical basis to guide it. The existing national codes also fail to meet the design needs. The period, damping ratio, stiffness and seismic behavior of the mixed structure composed of the steel structure and the original reinforced concrete structure have all changed, so it is not scientific to design and calculate the adding part only. It is necessary to carry out integral calculation and special aseismic checking calculation for this kind of hybrid structure. In this paper, the subject of adding layer to steel structure of reinforced concrete frame structure is studied. This paper summarizes the present research situation of steel structure adding layer, the engineering application situation at home and abroad, the related technology of steel structure adding layer structure, the basic theory and method of static and dynamic analysis of seismic action and the relevant theory of finite element method. Application of PMSAP finite element analysis software to the top of a four-story reinforced concrete frame structure office building in Tiangezhuang, Fengtai District, Beijing, with two stories of pure steel frame structure, the vibration mode decomposition response spectrum method and dynamic time-history analysis method are used to analyze the mixed structure respectively. The overall seismic performance analysis is carried out. The analysis results show that the internal force and displacement of the whole hybrid structure are increased after the original four-story reinforced concrete frame structure is added to the two-story steel frame, and the weak layer is formed at the additional floor. The natural vibration period of the whole structure after adding layers is longer than that of the original frame structure, and the seismic effect of the original frame structure can be reduced by adding layer to the steel structure.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU352.11;TU391

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 喬帥;植筋加層鋼筋混凝土框架抗震性能試驗(yàn)研究與數(shù)值分析[D];天津大學(xué);2014年

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本文編號(hào)：2008619