青岛北站西广厅减振设计*
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(1 东南大学土木工程学院， 南京 210096；2 东南大学混凝土及预应力混凝土结构教育部重点实验室， 南京 210096；3 北京城建设计研究总院，北京 100037；4 北京市建筑设计研究院有限公司，北京 100045；5 江苏省苏科建设技术发展有限公司， 南京 210008)［摘要］针对青岛北站西广厅的振动舒适度和结构地震响应过大的问题，建立了整体有限元模型，对结构进行了动力特性分析。以IABSE 建议的单人步行激励荷载为基础，确定了分析工况，并对该观景平台进行了人行荷载模拟，通过时程分析法对其进行了振动舒适度分析，结果表明，利用该方法设计MTMD 减振系统可以有效地控制结构的竖向振动，最大减振率达到50.56%，同时也使各个工况的加速度峰值达到了控制目标。屈曲约束支撑（BRB）在地震时有良好的耗能能力、延性和滞回性能，采用BRB减震体系后的分析计算结果表明，屈曲约束支撑在罕遇地震作用下通过自身的耗能降低了结构自身的地震响应；同时，屈曲约束支撑的滞回曲线饱满，说明耗能充分，从而有效改善了结构的抗震性能，显著提高了结构的抗震承载能力。［关键词］青岛北站; 人体舒适度; 多重调频质量阻尼器; 屈曲约束支撑; 耗能; 弹塑性分析中图分类号：TU352 文献标识码：A 文章编号：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*国家自然科学基金项目“高铁站房大跨楼盖结构随机人群荷载效应及其MTMD减振控制研究”(51278106)，江苏省建设厅基金项目“新型建筑结构体系关键技术研究与示范”(7605000023)。作者简介：张志强，博士，副教授，Email：zzq1969@seu.edu.cn。参考文献［1］朱鸣,张志强,柯长华,等.大跨度钢结构楼盖竖向振动舒适度的研究［J］.建筑结构,2008,38(1):72-76.［2］徐培福，傅学怡，王翠坤，等. 复杂高层建筑结构设计［M］. 北京: 中国建筑工业出版社, 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］马斐, 张志强, 李爱群, 等. 大跨高空连廊人群荷载下TMD减振控制分析［J］.建筑结构,2011,41(S1):1399-1403.［7］罗开海.屈曲约束支撑体系设计方法［J］.建筑结构,2011, 41(11): 98-102.［8］赵瑛,郭彦林. 防屈曲支撑框架设计方法研究［J］. 建筑结构,2010, 40(1): 38-43.［9］GB 50011—2010 建筑抗震设计规范［S］. 北京:中国建筑工业出版社, 2010.
