- 摘 要
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(1 中國(guó)建筑標(biāo)準(zhǔn)設(shè)計(jì)研究院有限公司, 北京 100048;
2 哈爾濱工業(yè)大學(xué)土木學(xué)院, 哈爾濱 150090; 3 北京科技大學(xué)土木與環(huán)境工程學(xué)院, 北京 100083)
[摘要]高聳柔性結(jié)構(gòu)在風(fēng)荷載作用下易產(chǎn)生較大的振動(dòng)加速度和變形,隨著其在工程中的廣泛應(yīng)用,對(duì)高聳結(jié)構(gòu)進(jìn)行結(jié)構(gòu)風(fēng)致振動(dòng)控制以提高其舒適度顯得極其重要。針對(duì)某旅游觀光塔進(jìn)行風(fēng)振響應(yīng)分析,并以塔中的消防水箱作為調(diào)諧質(zhì)量阻尼器系統(tǒng)(TMD)的慣性質(zhì)量,進(jìn)行了TMD風(fēng)致振動(dòng)控制設(shè)計(jì)及其振動(dòng)控制分析。研究結(jié)果表明,所設(shè)計(jì)的懸掛式TMD控制系統(tǒng)可以有效減小順風(fēng)向結(jié)構(gòu)風(fēng)致響應(yīng),從而顯著提高觀光塔的舒適度,并對(duì)結(jié)構(gòu)的基底剪力、傾覆力矩、頂部位移等均有較好的控制效果;同時(shí)對(duì)觀光塔橫風(fēng)向風(fēng)振進(jìn)行初步驗(yàn)算,判定其不會(huì)發(fā)生大幅值的渦激振動(dòng)現(xiàn)象。
[關(guān)鍵詞]高聳柔性結(jié)構(gòu); 風(fēng)振控制; 調(diào)諧質(zhì)量阻尼器; 舒適度
中圖分類號(hào): TU355 文獻(xiàn)標(biāo)識(shí)碼: A文章編號(hào): 1002-848X(2016)S2-0338-05
Investigation on wind-induced vibration control of one sightseeing tower
installed with tuned mass damper (TMD)
Lu Lei1, Liu Min2, Xu Huaibing3, Bu Fanjie1, Wu Xiaofeng1, Wu Peisong2
(1 China Institute of Building Standard Design and Research Co., Limited, Beijing 100048, China;
2 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;
3 School of Civil and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China)
Abstract: Due to flexibility of high-rise building subjected to wind excitation, large acceleration and deformation would easily occur. With the increasing of the high-rise building application in engineering, it is important to reduce the vibration and increase the comfortable degree of the high-rise building induced by wind. Numerical analysis on vibration responds of one sightseeing tower was conducted. On the basis of the analysis results and utilizing the fire water tank as the mass block, the tune mass damper(TMD)was designed to mitigate the vibration and investigation on wind-induced vibration control of the sightseeing tower installed with TMD was carried on. The investigation indicated that the designed suspended TMD could effective reduce the vibration respond induced by along-wind and improve the comfortablity of the sightseeing tower. Moreover, the base shear force, overturning moment and top displacement could be decreased effectively by installing with the designed TMD. In addition, the vibration of the tower subjected to across-wind excitation was calculated to demonstrate that the vortex-induced vibration with large amplitude could not be happened for the sightseeing tower.
Keywords: high-rise building; vibration control of building subjected to wind exciting; tuned mass damper; comfortable degree
作者簡(jiǎn)介: 盧雷,碩士,高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,Email:leiyd@163.com。
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