本文選題：懸掛結(jié)構(gòu) + 減震效果��； 參考：《河北聯(lián)合大學(xué)》2014年碩士論文

【摘要】：懸掛建筑是近現(xiàn)代經(jīng)濟發(fā)展和科學(xué)技術(shù)進步的產(chǎn)物，懸掛結(jié)構(gòu)是減震的重要手段之一。自1938年Williams提出了用懸掛方式建筑超高層結(jié)構(gòu)的想法，并擬采用巨型框架懸掛樓層，之后很多學(xué)者對其進行了理論和實驗的研究，并廣泛應(yīng)用于建筑和橋梁等工程。 懸掛結(jié)構(gòu)的受力性能與結(jié)構(gòu)高度、懸掛樓層數(shù)、吊桿半徑、承載柱截面抗彎剛度、樓層阻尼器阻尼系數(shù)因素有關(guān)，文章主要討論各參數(shù)對懸掛系統(tǒng)的減震效果分析。 首先建立懸掛系統(tǒng)簡化模型，以一個14層結(jié)構(gòu)為例，1-7層懸掛在第一剛性桿上，8-14層懸掛在第二剛性桿上，坐標(biāo)系xoy固定在地面上。根據(jù)拉格朗日方程推導(dǎo)懸掛系統(tǒng)的動力反應(yīng)計算公式，并利用MATLAB語言編制了時程分析程序，輸入實際地震動記錄和人工波對結(jié)構(gòu)進行動力反應(yīng)計算分析，通過研究其在地震作用下的運動參數(shù)，分析懸掛系統(tǒng)的減震效果。通過實際計算研究其在地震作用下的運動狀態(tài)，并分析懸掛系統(tǒng)是否有減震效果。通過比較兩種情況的最大層間位移、最大樓層位移、最大樓層速度和最大樓層加速度，，得到懸掛系統(tǒng)減震效果最佳時其控制因素的最優(yōu)組合。 通過計算和比較得到以下結(jié)論：根據(jù)拉格朗日方程建立了承載柱懸掛結(jié)構(gòu)體系的運動方程。懸掛樓段樓層層間位移大幅減小，減震效果接近97%。樓層位移位移沿懸掛樓段高度分布區(qū)域均勻；樓層速度與加速度也分別減少。承載柱截面抗彎剛度值對其截面內(nèi)力與水平位移的影響最顯著，當(dāng)截面抗彎剛度值增大時，截面內(nèi)力隨之增大，水平位移減��；吊桿長度，樓層阻尼器阻尼系數(shù)對柱身內(nèi)力及水平位移的影響較小。
[Abstract]:Suspension structure is the product of modern economic development and scientific and technological progress, and suspension structure is one of the important means to reduce earthquake. Since 1938 Williams put forward the idea of using the suspension mode to build the super high-rise structure and proposed to adopt the mega frame suspended floor. After that many scholars have studied it theoretically and experimentally and widely used in buildings and bridges and other projects. The mechanical properties of the suspension structure are related to the height of the structure, the number of the suspended floors, the radius of the suspension rod, the flexural stiffness of the bearing column section, and the damping coefficient of the floor damper. This paper mainly discusses the analysis of the damping effect of each parameter on the suspension system. Firstly, a simplified model of suspension system is established. Taking a 14-story structure as an example, the 1-7 layer is suspended from the first rigid bar on the 8-14 layer and the coordinate system xoy is fixed on the ground. According to Lagrange equation, the dynamic response calculation formula of suspension system is deduced, and the time-history analysis program is compiled by MATLAB language, and the actual ground motion record and artificial wave are input to calculate and analyze the dynamic response of the structure. By studying the motion parameters of the suspension system under earthquake action, the shock absorption effect of the suspension system is analyzed. The motion state of the suspension system under earthquake action is studied by practical calculation, and whether the suspension system has damping effect or not is analyzed. By comparing the maximum floor displacement, the maximum floor displacement, the maximum floor velocity and the maximum floor acceleration of the two cases, the optimal combination of the control factors is obtained when the suspension system has the best damping effect. By calculation and comparison, the following conclusions are obtained: according to Lagrange equation, the motion equation of bearing column suspension structure system is established. The floor displacement of the suspension section is greatly reduced, and the effect of shock absorption is close to 97. The floor displacement is distributed evenly along the height of the suspended floor, and the floor velocity and acceleration are reduced respectively. The flexural stiffness value of bearing column has the most significant influence on the internal force and horizontal displacement of the bearing column. When the flexural stiffness value of the section increases, the internal force of the section increases and the horizontal displacement decreases. The damping coefficient of the floor damper has little effect on the internal force and horizontal displacement of the column.
【學(xué)位授予單位】：河北聯(lián)合大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU351

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本文編號：1814937