本文選題：TMD　切入點(diǎn)：高層結(jié)構(gòu)　出處：《河北聯(lián)合大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：當(dāng)?shù)卣鸢l(fā)生時(shí)，高層結(jié)構(gòu)就像一個(gè)反應(yīng)放大器，隨高度的增加，振動(dòng)的振幅逐漸增大，高層以及超高層結(jié)構(gòu)在地震作用下的反應(yīng)將會(huì)直接影響到人民的生命和財(cái)產(chǎn)安全，同時(shí)，高層結(jié)構(gòu)一旦破壞或者倒塌將會(huì)造成難以想象的次生災(zāi)害。因此，控制高層結(jié)構(gòu)在地震作用下的反應(yīng)就顯得尤為重要。 調(diào)諧質(zhì)量減震系統(tǒng)（TMD等）對(duì)于層數(shù)較多，高度較大，主振型比較明顯、穩(wěn)定的多層、高層、超高層結(jié)構(gòu)都有較好的減震效果，且該技術(shù)減震機(jī)理明確，雖然理論驗(yàn)算不多，但卻已取得較多的試驗(yàn)成果，并已在某些工程中得到應(yīng)用。針對(duì)理論驗(yàn)算不足的現(xiàn)狀對(duì)高層結(jié)構(gòu)應(yīng)用TMD的減震效果進(jìn)行驗(yàn)算，指出TMD不同的放置方法對(duì)減震效果的影響。 通過(guò)Lagrange方程推導(dǎo)出未采取任何減震措施、只在頂部放置TMD阻尼器及頂部和中部均放置TMD阻尼器三種情況的高層結(jié)構(gòu)在地震動(dòng)作用下的運(yùn)動(dòng)方程，，根據(jù)Runge-Kutta法，利用MATLAB語(yǔ)言編制計(jì)算軟件，求解運(yùn)動(dòng)方程。將上述三種情況的位移、速度、加速度、彎矩等數(shù)據(jù)進(jìn)行對(duì)比分析。分析表明，影響TMD減震效率的因素有阻尼系數(shù)、摩擦系數(shù)、彈簧系數(shù)和調(diào)諧質(zhì)量。在四個(gè)影響因素中，阻尼系數(shù)對(duì)TMD減震效率的影響最大。使用TMD的高層結(jié)構(gòu)各參照點(diǎn)的控制變量明顯小于未使用減震器的各變量，TMD起到了較好的減震效果。但針對(duì)不同的基底激勵(lì)，單獨(dú)在頂部放置TMD阻尼器和頂部、中部均放置TMD阻尼器的減震效果不同。總體來(lái)說(shuō)，頂部、中部均放置TMD的減震效果優(yōu)于僅在頂部放置TMD的情況，但針對(duì)200m的高層結(jié)構(gòu)，以上兩種情況減震效率均在50%以上。
[Abstract]:When the earthquake occurs, the high-rise structure is like a response amplifier. With the increase of height, the amplitude of vibration increases gradually. The response of high-rise and super-high-rise structures under earthquake action will directly affect the lives and property safety of the people, at the same time, Once the high-rise structure is destroyed or collapsed, it will cause unimaginable secondary disasters. Therefore, it is very important to control the response of high-rise structure under earthquake. The tuned mass damping system (TMD, etc.) has better damping effect for multi-storey, high-rise and super-high-rise structures with more layers, larger height, more obvious main vibration modes and stable multi-storey, high-rise and super-high-rise structures, and the mechanism of this technique is clear, although the theoretical checking calculation is not much. However, more experimental results have been obtained and have been applied in some projects. In view of the current situation of insufficient theoretical checking calculation, the seismic absorption effect of the application of TMD in high-rise structures is checked and calculated, and the effect of different placement methods of TMD on the seismic absorption effect is pointed out. Through the Lagrange equation, the motion equations of high-rise structures with TMD dampers at the top and TMD dampers at the top and the middle of the structures under ground motion are derived. According to the Runge-Kutta method, the equations of motion of high-rise structures under ground motion are derived. The calculation software is compiled by MATLAB language to solve the equation of motion. The data of displacement, velocity, acceleration and bending moment of the three cases mentioned above are compared and analyzed. The analysis shows that the factors influencing the efficiency of TMD vibration absorption are damping coefficient, friction coefficient, etc. Spring coefficient and tuning mass. Of the four factors, The damping coefficient has the greatest effect on the damping efficiency of TMD. The control variables of the reference points of the high-rise structures using TMD are obviously smaller than those of the ones without the absorber. However, for different base excitations, the damping coefficient has a better effect on the damping efficiency. TMD dampers and top dampers are placed at the top alone, and the damping effects of TMD dampers in the middle are different. In general, the damping effect of placing TMD at the top and the middle is better than that of only placing TMD at the top, but for 200m tall structures, In both cases, the damping efficiency is more than 50%.
【學(xué)位授予單位】：河北聯(lián)合大學(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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