本文選題：TLD + 減震控制��； 參考：《西安建筑科技大學(xué)》2013年碩士論文

【摘要】：高層結(jié)構(gòu)的快速發(fā)展，結(jié)構(gòu)高度的不斷增加，傳統(tǒng)的一味增加結(jié)構(gòu)剛度的方法將很難滿足規(guī)范對(duì)結(jié)構(gòu)控制的要求。結(jié)構(gòu)的振動(dòng)控制為結(jié)構(gòu)設(shè)計(jì)開辟了一條新的有效途徑。調(diào)諧液體阻尼器（TLD）是結(jié)構(gòu)被動(dòng)控制的一種裝置，其結(jié)構(gòu)簡(jiǎn)單，造價(jià)低廉，而且控制效果很好，在結(jié)構(gòu)風(fēng)振控制中得到了廣泛的應(yīng)用，但是在地震作用下TLD對(duì)高層結(jié)構(gòu)的控制技術(shù)還不完善。因此本文主要研究TLD對(duì)高層建筑地震控制作用的影響。 本文首先分析了TLD的減震機(jī)理，介紹了TLD理論研究的各種方法，詳細(xì)分析了各種方法的優(yōu)缺點(diǎn)，然后選取集中質(zhì)量法作為后續(xù)分析的理論基礎(chǔ)，并結(jié)合高層結(jié)構(gòu)在地震荷載作用下的動(dòng)力方程，建立了結(jié)構(gòu)—TLD系統(tǒng)的動(dòng)力方程。其次通過SAP2000有限元軟件建立了實(shí)際框架—核心筒模型，對(duì)TLD在地震作用下的影響因素進(jìn)行動(dòng)力時(shí)程分析，研究了質(zhì)量比、頻率比以及TLD作用位置對(duì)減震效果的影響規(guī)律。得出了在頻率比和位置一定時(shí)，TLD的減震率隨著質(zhì)量比的增大而增大，待質(zhì)量比大于3%之后，減震率將逐漸減��；在質(zhì)量比和位置確定時(shí)，減震率隨著頻率比的增大呈現(xiàn)出類似正態(tài)分布的規(guī)律，在頻率比為0.88左右時(shí)，減震率達(dá)到最大；在質(zhì)量比和頻率比一定時(shí)，將TLD放置在中間位置比放在其他位置的減震率要高。再次分析了實(shí)際應(yīng)用時(shí)，合理設(shè)計(jì)的TLD在不同烈度區(qū)的減震效果，得出了使用TLD進(jìn)行控制的相同結(jié)構(gòu)在不同烈度下的減震率是不同的，高烈度區(qū)的減震率大，并得出了在在8度（0.2g）區(qū)，TLD對(duì)結(jié)構(gòu)的減震作用能起到相對(duì)降低地震烈度、提高結(jié)構(gòu)抗震性能的效果。最后整理了本次研究的主要結(jié)論，提出了實(shí)際設(shè)計(jì)應(yīng)用的一點(diǎn)建議和還需要繼續(xù)深入研究的一些問題。
[Abstract]:With the rapid development of high-rise structures and the increasing of structural height, the traditional method of increasing structural stiffness will be difficult to meet the requirements of structural control. The vibration control of the structure opens up a new effective way for the structure design. TLD (tuned liquid damper) is a kind of passive control device for structure. It is simple in structure, low in cost and good in control effect. It has been widely used in wind vibration control of structure. However, the TLD control technology for high-rise structures under earthquake is not perfect. Therefore, the effect of TLD on seismic control of tall buildings is studied in this paper. In this paper, the mechanism of TLD damping is analyzed, and various methods of TLD theory research are introduced. The advantages and disadvantages of these methods are analyzed in detail, and then the lumped mass method is selected as the theoretical basis of subsequent analysis. Combined with the dynamic equations of tall structures under earthquake load, the dynamic equations of structure-TLD system are established. Secondly, the actual frame-core tube model is established by SAP2000 finite element software, and the dynamic time history analysis of the influencing factors of TLD under earthquake action is carried out, and the influence law of mass ratio, frequency ratio and position of TLD action on the damping effect is studied. The results show that the damping rate of TLD increases with the increase of mass ratio when the frequency ratio and position are fixed. When the mass ratio is greater than 3%, the damping rate will gradually decrease, and when the mass ratio and position are determined, When the frequency ratio is about 0.88, the damping rate reaches the maximum, and when the mass ratio and frequency ratio are fixed, the TLD in the middle position is higher than that in other positions. The effect of the reasonably designed TLD in different intensity region is analyzed again. It is concluded that the damping rate of the same structure controlled by TLD is different under different intensity, and the damping rate in high intensity region is large. It is concluded that TLD can reduce the seismic intensity and improve the seismic performance of the structure in the region of 8 ~ 0.2g. Finally, the main conclusions of this study are summarized, some suggestions for practical design and application and some problems that need to be further studied are put forward.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU973.31

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