基礎隔震、層間耗能支撐及兩者聯(lián)合使用時抗震性能分析
發(fā)布時間：2018-10-23 07:24
【摘要】：在結構減震控制領域中基礎隔震技術是減震效果最為理想的一種方法，結構的周期由于增設了隔震裝置而得到延長，使上部結構在地震時受到地面運動的影響減小。傳統(tǒng)抗震結構體系與隔震結構體系的耗能原理有所不同，隔震結構體系中的地震能量是通過設置在隔震層的耗能設備來耗散，而不是靠結構自身或自身構件的塑性變形耗散，在耗能方面隔震結構體系顯示出很大的優(yōu)越性。防屈曲耗能支撐是一種新型支撐構件，其作用與普通支撐類似，，不同之處是當防屈曲耗能支撐受到反復荷載作用時，構件可以達到屈服但并不會屈曲，因此防屈曲耗能支撐在實際應用中無論處于受拉狀態(tài)還是處于受壓狀態(tài)，全截面均可達到屈服。當結構遭遇強震作用時，大部分的地震能量可通過構件的滯回耗散，從而避免了主體結構的破壞。 本文開篇便對防屈曲耗能支撐和基礎隔震技術的發(fā)展歷史、現(xiàn)狀、優(yōu)勢及劣勢和在工程中的實際應用做了介紹，并在原理上對防屈曲耗能支撐和基礎隔震技術進行了闡述。 其次運用有限元軟件Midas/Gen對高層混凝土框架、增設防屈曲耗能支撐的混凝土框架、基礎隔震框架以及防屈曲耗能支撐與基礎隔震技術聯(lián)合應用的混凝土框架，這四種方案分別在彈性階段和彈塑性階段進行時程分析，在以下幾個方面對比原結構和其余三種方案的減震耗能性能。（1）最大層間位移角，（2）頂層最大水平位移時程曲線，（3）頂層節(jié)點最大加速度時程曲線，（4）隔震支座和防屈曲耗能支撐的滯回耗能性能等。研究結果表明：當結構遭遇中震或大震作用時，隔震支座或耗能支撐開始產(chǎn)生滯回變形耗散輸入結構中的地震能量，減震效果十分明顯。本論文的科研成果可以作為實際工程應用和類似結構體系研究的參考。
[Abstract]:In the field of structural shock absorption and control, the base isolation technique is the most ideal method for seismic absorption. The period of the structure is prolonged because of the addition of the isolation device, which reduces the influence of the ground motion on the superstructure during the earthquake. The energy dissipation principle of the traditional seismic structure system is different from that of the isolated structure system. The seismic energy in the isolated structure system is dissipated by the energy dissipation equipment installed in the isolation layer, not by the plastic deformation dissipation of the structure itself or its own members. The isolated structure system has shown great superiority in energy dissipation. The anti-buckling energy-dissipation bracing is a new type of bracing member whose function is similar to that of common bracing. The difference is that when the anti-buckling energy dissipation bracing is subjected to repeated loads, the member can yield but not buckle. Therefore, in practical application, the full section of the anti-buckling energy dissipation bracing can reach yield whether it is in the state of tension or in the state of compression. When the structure is subjected to strong earthquake, most of the seismic energy can be dissipated through the hysteresis of the member, thus avoiding the destruction of the main structure. At the beginning of this paper, the development history, present situation, advantages and disadvantages and practical application in engineering of anti-buckling energy dissipation support and foundation isolation technology are introduced, and the anti-buckling energy dissipation support and foundation isolation technology are expounded in principle. Secondly, the finite element software Midas/Gen is applied to the high-rise concrete frame, the concrete frame with anti-buckling and energy-dissipation bracing, the base isolation frame and the concrete frame with the combination of anti-buckling energy dissipation bracing and foundation isolation technology are added. The four schemes are analyzed in the elastic stage and the elastic-plastic stage, respectively. The energy dissipation performance of the original structure and the other three schemes are compared in the following aspects. (1) maximum interstory displacement angle, (2) maximum horizontal displacement time history curve of the top floor, (3) maximum acceleration time history curve of the top floor joint, (4) isolation support and anti-buckling Hysteretic energy dissipation performance of energy dissipation support, etc. The results show that when the structure is subjected to moderate or large earthquakes, the isolation support or energy dissipation support begins to produce seismic energy dissipation in the hysteretic deformation input structure, and the effect of seismic absorption is very obvious. The research results of this paper can be used as a reference for practical engineering applications and similar structural systems research.
【學位授予單位】：西安建筑科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU352.1
本文編號：2288492
[Abstract]:In the field of structural shock absorption and control, the base isolation technique is the most ideal method for seismic absorption. The period of the structure is prolonged because of the addition of the isolation device, which reduces the influence of the ground motion on the superstructure during the earthquake. The energy dissipation principle of the traditional seismic structure system is different from that of the isolated structure system. The seismic energy in the isolated structure system is dissipated by the energy dissipation equipment installed in the isolation layer, not by the plastic deformation dissipation of the structure itself or its own members. The isolated structure system has shown great superiority in energy dissipation. The anti-buckling energy-dissipation bracing is a new type of bracing member whose function is similar to that of common bracing. The difference is that when the anti-buckling energy dissipation bracing is subjected to repeated loads, the member can yield but not buckle. Therefore, in practical application, the full section of the anti-buckling energy dissipation bracing can reach yield whether it is in the state of tension or in the state of compression. When the structure is subjected to strong earthquake, most of the seismic energy can be dissipated through the hysteresis of the member, thus avoiding the destruction of the main structure. At the beginning of this paper, the development history, present situation, advantages and disadvantages and practical application in engineering of anti-buckling energy dissipation support and foundation isolation technology are introduced, and the anti-buckling energy dissipation support and foundation isolation technology are expounded in principle. Secondly, the finite element software Midas/Gen is applied to the high-rise concrete frame, the concrete frame with anti-buckling and energy-dissipation bracing, the base isolation frame and the concrete frame with the combination of anti-buckling energy dissipation bracing and foundation isolation technology are added. The four schemes are analyzed in the elastic stage and the elastic-plastic stage, respectively. The energy dissipation performance of the original structure and the other three schemes are compared in the following aspects. (1) maximum interstory displacement angle, (2) maximum horizontal displacement time history curve of the top floor, (3) maximum acceleration time history curve of the top floor joint, (4) isolation support and anti-buckling Hysteretic energy dissipation performance of energy dissipation support, etc. The results show that when the structure is subjected to moderate or large earthquakes, the isolation support or energy dissipation support begins to produce seismic energy dissipation in the hysteretic deformation input structure, and the effect of seismic absorption is very obvious. The research results of this paper can be used as a reference for practical engineering applications and similar structural systems research.
【學位授予單位】：西安建筑科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU352.1
【參考文獻】
相關期刊論文 前7條
1 周錫元,韓淼,曾德民,馬東輝;組合橡膠支座及橡膠支座與柱串聯(lián)系統(tǒng)的水平剛度計算方法[J];地震工程與工程振動;1999年04期
2 葉列平,馬千里,程光煜,張文華,魏捷;西部機電科技商務中心鋼結構消能減震計算分析[J];工程抗震與加固改造;2005年03期
3 孫建華;羅開海;王亞勇;白雪霜;;含屈曲約束耗能支撐的高層建筑地震作用效應分析[J];工程抗震與加固改造;2007年04期
4 汪家銘,中島正愛,陸燁;屈曲約束支撐體系的應用與研究進展(Ⅱ)[J];建筑鋼結構進展;2005年02期
5 劉英利;黨希濱;楊平;蘇幼坡;;基礎隔震結構的非線性動力分析[J];世界地震工程;2007年02期
6 黃宗明,白紹良,賴明;結構地震反應時程分析中的阻尼研究[J];土木工程學報;1998年02期
7 黃海生,王柏生;基礎隔震建筑非線性動力響應的時程計算方法[J];振動與沖擊;2005年03期
本文編號：2288492
本文鏈接：http://www.sikaile.net/kejilunwen/sgjslw/2288492.html
