本文選題：黏滯阻尼器 + 剛性伸臂��； 參考：《湖南大學(xué)》2015年碩士論文

【摘要】：黏滯阻尼器作為一種被動(dòng)耗能裝置,因其易操作性和高可靠性廣受工程技術(shù)人員的好評(píng),在各類多高層結(jié)構(gòu)中應(yīng)用廣泛,但其減震性能的發(fā)揮依賴于結(jié)構(gòu)的層間位移,而高層結(jié)構(gòu)整體剛度大、層間位移限值小,采用普通的黏滯阻尼器布置方式減震效果較差。Jeremlah在06年提出了帶剛性伸臂減震層高層結(jié)構(gòu)的減震理念,具有在阻尼器兩端放大層間位移的效果,其減震性能較好,但此類結(jié)構(gòu)的相關(guān)研究還比較少,本文在總結(jié)和吸收國(guó)內(nèi)外研究成果的基礎(chǔ)上,對(duì)該種具有放大層間位移效果的黏滯阻尼器布置形式進(jìn)行深入的研究與分析,得到一些對(duì)設(shè)計(jì)有益的結(jié)論。具體內(nèi)容如下:(1)本文通過推導(dǎo)黏滯阻尼器的單周簡(jiǎn)諧振動(dòng)耗能能力公式得到黏滯阻尼器在高層建筑中合適的參數(shù)設(shè)置范圍。(2)通過推導(dǎo)三角形形式鋼管伸臂對(duì)有效層間位移的放大公式,得到了帶剛性伸臂減震層高層結(jié)構(gòu)中黏滯阻尼器的模態(tài)附加阻尼比計(jì)算公式。結(jié)果表明:帶剛性伸臂減震高層結(jié)構(gòu)抗震性能的提高與剪力墻到外框柱軸線間的距離成正比,與層高成反比,與阻尼器豎向夾角的余弦相關(guān)。(3)假定總阻尼系數(shù)和單個(gè)阻尼器的其他參數(shù)不變,比較設(shè)置1-4道剛性伸臂減震層時(shí)結(jié)構(gòu)的性能差異,可知對(duì)于多道減震層結(jié)構(gòu)其單個(gè)性能指標(biāo)雖不是最好,但綜合性能更好。(4)假定單個(gè)阻尼器其他參數(shù)不變時(shí),通過變化結(jié)構(gòu)總阻尼系數(shù),得知帶剛性伸臂減震層高層結(jié)構(gòu)輻射阻尼器存在最優(yōu)總阻尼系數(shù)(即最優(yōu)附加阻尼比),通過對(duì)相應(yīng)內(nèi)力和位移規(guī)律的總結(jié),得到結(jié)構(gòu)合理總阻尼系數(shù)的選取規(guī)則,由此可知,附加阻尼比大小而非減震層數(shù)量才是決定此類減震結(jié)構(gòu)抗震性能的關(guān)鍵。(5)以一個(gè)框架-核心筒結(jié)構(gòu)為例,對(duì)其分別設(shè)置剛性伸臂減震層、對(duì)角支撐減震層及加強(qiáng)層在近場(chǎng)脈沖波和非脈沖波作用下的抗震性能進(jìn)行了對(duì)比與分析。結(jié)果表明:帶剛性伸臂減震層高層結(jié)構(gòu)的抗震性能在三類結(jié)構(gòu)中是最為優(yōu)越的,而脈沖波則會(huì)導(dǎo)致層間位移等性能指標(biāo)大幅增加,設(shè)計(jì)時(shí)不容忽視。
[Abstract]:As a passive energy dissipation device, viscous damper is widely used in various kinds of high-rise structures because of its ease of operation and high reliability. However, the performance of viscous damper depends on the interstory displacement of the structure. However, the overall stiffness of the high-rise structure is large and the limit value of the interstory displacement is small. In 2006, the idea of reducing the vibration of the high-rise structure with rigid cantilever damping layer is put forward by using the ordinary viscous damper arrangement. It has the effect of amplifying the interlayer displacement at the two ends of the damper, and its damping performance is better, but the research of this kind of structure is still relatively few. This paper summarizes and absorbs the research results at home and abroad. The layout of the viscous damper with the effect of magnifying the displacement between the layers is studied and analyzed in depth, and some useful conclusions are obtained. The main contents are as follows: (1) in this paper, by deducing the energy dissipation capacity formula of single cycle harmonic vibration of viscous dampers, the appropriate parameter setting range of viscous dampers in high-rise buildings is obtained. The amplification formula of interstory displacement, The formula for calculating the modal additional damping ratio of viscous dampers in tall structures with rigid cantilever damping layer is obtained. The results show that the improvement of seismic performance of high-rise structures with rigid cantilever is proportional to the distance between shear wall and outer frame column axis, and inversely proportional to Gao Cheng. On the assumption that the total damping coefficient and other parameters of a single damper are invariant, the performance differences of the structure with 1-4 rigid cantilever damping layers are compared. It is known that the single performance index is not the best, but the comprehensive performance is better for the multi-channel damping layer structure, assuming that the other parameters of the single damper are invariant, the total damping coefficient of the structure is changed by changing the total damping coefficient of the structure. It is known that there is an optimal total damping coefficient (that is, the optimal additional damping ratio) in the radiation dampers of high-rise structures with rigid cantilever dampers. By summarizing the corresponding internal forces and displacement laws, the selection rules of the reasonable total damping coefficients of the structures are obtained. The magnitude of additional damping ratio rather than the number of damping layers is the key to determine the seismic performance of this kind of structure. The seismic behavior of diagonal braced damping layer and strengthened layer under the action of near-field pulse wave and non-pulse wave is compared and analyzed. The results show that the seismic performance of high-rise structures with rigid cantilever damping layer is the best among the three kinds of structures, while the pulse wave will lead to a large increase in the performance indexes such as interstory displacement, which can not be ignored in the design.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU973.31

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳f 健;易偉建;;近場(chǎng)地震作用下銹蝕鋼筋混凝土橋墩的IDA分析[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);2015年03期

2 燕樂緯;陳洋洋;周云;;基于數(shù)字序列編碼遺傳算法的高層結(jié)構(gòu)黏滯阻尼器優(yōu)化布置[J];振動(dòng)與沖擊;2015年03期

3 周云;林紹明;鄧雪松;;不同構(gòu)造和不同組合減震層高層結(jié)構(gòu)地震反應(yīng)分析[J];建筑結(jié)構(gòu);2015年01期

4 汪夢(mèng)甫;汪幟輝;唐毅;;近場(chǎng)脈沖型地震對(duì)結(jié)構(gòu)非彈性位移比譜的影響[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年06期

5 薛彥濤;章萬(wàn)勝;金林飛;;結(jié)構(gòu)受力層間位移(有害位移)計(jì)算方法研究[J];建筑科學(xué);2014年03期

6 周麗芳;鄧雪松;周云;;高層黏滯阻尼減震結(jié)構(gòu)最小地震剪力系數(shù)分析研究[J];地震工程與工程振動(dòng);2013年06期

7 巫振弘;薛彥濤;王翠坤;高杰;程小燕;;多遇地震作用下消能減震結(jié)構(gòu)附加阻尼比計(jì)算方法[J];建筑結(jié)構(gòu)學(xué)報(bào);2013年12期

8 任鳳鳴;周云;劉加平;;鋼管混凝土框架-核心筒減震結(jié)構(gòu)的控制效果研究[J];西安建筑科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2012年03期

9 李光星;吳軼;楊春;陸祝賢;張春梅;;帶黏滯阻尼器SRC框支剪力墻結(jié)構(gòu)消能減震分析[J];地震工程與工程振動(dòng);2012年03期

10 陳永祁;曹鐵柱;馬良U，

本文編號(hào)：1780744