青島北站西廣廳減振設(shè)計*
張志強1,2，胡心一1,3，張相勇4，蘇冠興1,5
- 摘 要
-
(1 東南大學(xué)土木工程學(xué)院， 南京 210096；2 東南大學(xué)混凝土及預(yù)應(yīng)力混凝土結(jié)構(gòu)教育部重點實驗室， 南京 210096；3 北京城建設(shè)計研究總院，北京 100037；4 北京市建筑設(shè)計研究院有限公司，北京 100045；5 江蘇省蘇科建設(shè)技術(shù)發(fā)展有限公司， 南京 210008)［摘要］針對青島北站西廣廳的振動舒適度和結(jié)構(gòu)地震響應(yīng)過大的問題，建立了整體有限元模型，對結(jié)構(gòu)進行了動力特性分析。以IABSE 建議的單人步行激勵荷載為基礎(chǔ)，確定了分析工況，并對該觀景平臺進行了人行荷載模擬，通過時程分析法對其進行了振動舒適度分析，結(jié)果表明，利用該方法設(shè)計MTMD 減振系統(tǒng)可以有效地控制結(jié)構(gòu)的豎向振動，最大減振率達到50.56%，同時也使各個工況的加速度峰值達到了控制目標。屈曲約束支撐（BRB）在地震時有良好的耗能能力、延性和滯回性能，采用BRB減震體系后的分析計算結(jié)果表明，屈曲約束支撐在罕遇地震作用下通過自身的耗能降低了結(jié)構(gòu)自身的地震響應(yīng)；同時，屈曲約束支撐的滯回曲線飽滿，說明耗能充分，從而有效改善了結(jié)構(gòu)的抗震性能，顯著提高了結(jié)構(gòu)的抗震承載能力。［關(guān)鍵詞］青島北站; 人體舒適度; 多重調(diào)頻質(zhì)量阻尼器; 屈曲約束支撐; 耗能; 彈塑性分析中圖分類號：TU352 文獻標識碼：A 文章編號：1002-848X(2013)23-0017-06Vibration-reduction design on west-wide hall of Qingdao North Railway StationZhang Zhiqiang1, 2, Hu Xinyi1, 3, Zhang Xiangyong4, Su Guanxing1, 5(1 School of Civil Engineering, Southeast University, Nanjing 210096, China; 2 Key Laboratory of C & PC Structure, Ministry of Education, Southeast University, Nanjing 210096, China; 3 Beijing Urban Engineering Design & Research Institute, Beijing 100037, China; 4 Beijing Institute of Architectural Design, Beijing 100045, China; 5 Jiangsu Suke Construction Technology Co., Ltd., Nanjing 210008, China)Abstract: Considering the problem of vibration serviceability and large seismic response of west-wide hall of Qingdao North Railway Station, a finite element model was established and the vibration properties of the structure were analyzed. Based on the IABSE data of single person walking loading, analysis working conditions were determined and the human-induced loading of the viewing platform was simulated. Then the vibration serviceability of the structure was analyzed by time history analysis method. The results show that the MTMD system designed by this method can control the vertical vibration of the structure effectively with maximum vibration reduction rate of 50.56%, and peak values of the acceleration in each working condition reach the control target. The Buckling-Restrained Brace(BRB) has good energy dissipation ability, ductility and hysteretic behavior during earthquake. Analysis and calculation results show that the seismic response of the structure is reduced by the energy dissipation of the BRB under rare earthquake, and the plump hysteretic curves show good energy dissipation performance, so the BRB can effectively improve seismic performance and seismic bearing capacity of the structure.Keywords: Qingdao North Railway Station; human serviceability; MTMD; BucklingRestrained Brace; energy dissipation; elastic-plastic analysis*國家自然科學(xué)基金項目“高鐵站房大跨樓蓋結(jié)構(gòu)隨機人群荷載效應(yīng)及其MTMD減振控制研究”(51278106)，江蘇省建設(shè)廳基金項目“新型建筑結(jié)構(gòu)體系關(guān)鍵技術(shù)研究與示范”(7605000023)。作者簡介：張志強，博士，副教授，Email：zzq1969@seu.edu.cn。參考文獻［1］朱鳴,張志強,柯長華,等.大跨度鋼結(jié)構(gòu)樓蓋豎向振動舒適度的研究［J］.建筑結(jié)構(gòu),2008,38(1):72-76.［2］徐培福，傅學(xué)怡，王翠坤，等. 復(fù)雜高層建筑結(jié)構(gòu)設(shè)計［M］. 北京: 中國建筑工業(yè)出版社, 2005.［3］Floor vibrations due to human activity(Steel design guide series 11)［S］.American Institute of Steel Construction,1997.［4］AFGC(French Association of Civil Engineering)Working Group.Assessment of vibration behavior of footbridge under pedestrian loading［R］.France:Sétra,2006.［5］EN 03(2007)RFS2-CT-2007-00033. Design of footbridges guideline［S］.Germany:Research Found for Coal & Steel, 2008.［6］馬斐, 張志強, 李愛群, 等. 大跨高空連廊人群荷載下TMD減振控制分析［J］.建筑結(jié)構(gòu),2011,41(S1):1399-1403.［7］羅開海.屈曲約束支撐體系設(shè)計方法［J］.建筑結(jié)構(gòu),2011, 41(11): 98-102.［8］趙瑛,郭彥林. 防屈曲支撐框架設(shè)計方法研究［J］. 建筑結(jié)構(gòu),2010, 40(1): 38-43.［9］GB 50011—2010 建筑抗震設(shè)計規(guī)范［S］. 北京:中國建筑工業(yè)出版社, 2010.
