地铁沿线历史保护建筑三维隔震减振加固研究
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摘要
轨道交通沿线的历史保护建筑由于自身承载力不足和长期承受地铁振动,影响了其结构安全和正常使用。针对此问题,对上海某历史保护建筑进行了三维隔震减振加固研究,主要对其进行三维隔震减振设计、隔震效果分析、加固施工工艺及加固后的振动处理效果振动测试分析。研究结果表明通过对历史保护建筑三维隔震减振加固后的结构在地震作用下的地震响应与加固前相比,楼层加速度减小51%~73%、层间剪力减小53%~74%、层间位移减小50%~74%,减震效果良好;罕遇地震下隔震支座的位移和受拉性能均满足规范要求,结构的抗震性能得到提高。
Insufficient structural self-loading capacity and subway vibration have an important effect on the safety and normal use of historical protective structures along subways. A method concerning the design and construction of three-dimensional damping and strengthening applied in a protective historical building in Shanghai is introduced in this paper. Its vibration reduction design,isolating affection analysis,constructional technology and the effect after reinforcement are researched. The results show that the floor acceleration reduces to 51% ~ 73%,the interlayer shear reduces to 53% ~ 74%,and the storey displacement reduces to 50% ~ 74% with a comparison of seismic response between original structure and strengthened structure under medium earthquakes. What's more,the displacement and tensile properties of isolation bearing meet standardized requirements under rare seismic action,and seismic performance is enhanced after reinforcement.
Insufficient structural self-loading capacity and subway vibration have an important effect on the safety and normal use of historical protective structures along subways. A method concerning the design and construction of three-dimensional damping and strengthening applied in a protective historical building in Shanghai is introduced in this paper. Its vibration reduction design,isolating affection analysis,constructional technology and the effect after reinforcement are researched. The results show that the floor acceleration reduces to 51% ~ 73%,the interlayer shear reduces to 53% ~ 74%,and the storey displacement reduces to 50% ~ 74% with a comparison of seismic response between original structure and strengthened structure under medium earthquakes. What's more,the displacement and tensile properties of isolation bearing meet standardized requirements under rare seismic action,and seismic performance is enhanced after reinforcement.
引文
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[11]DB31/T470-2009城市轨道交通(地下段)列车运行引起的住宅建筑室内结构振动与结构噪声限值及测量方法[S].上海:上海市质量技术监督局,2010.
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[13]楼梦麟;李守继.地铁引起建筑物振动评价研究[J].振动与冲击,2007,26(8):68-71.Evaluation of buildings’vibration induced by under ground trains[J].Journal of Vibration and Shock,2007,26(8):68-71.(in Chinese)
[2]朱光亚,杨丽霞.浅析城市化进程中的建筑遗产保护[J].建筑与文化,2006(6):15-22.ZHU Guangya,YANG Lixia.Architectural heritage conservation during the process of urbanization[J].Architecture&Culture,2006(6):15-22.(in Chinese)
[3]潘毅,王超,季晨龙,等.汶川地震中木结构古建筑的震害调查与分析[J].建筑科学,2012,28(7):103-106.PAN Yi,WANG Chao,JI Chenlong,et al.Investigation and analysis of seismic damage for chinese ancient timber buildings in wenchuan earthquake[J].Builing Science,2012,28(7):103-106.(in Chinese)
[4]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB 50011-2010 Code for seismic design of buildings[S].Beijing China Architecture&Building Press 2010.(in Chinese)
[5]洪俊青,刘伟庆.地铁对周边建筑物振动影响分析[J].振动与冲击,2006,25(4):142-183.HONG Junqin,LIU Weiqing.Analysis of effects induced by subway trainon surrounding building vibration[J].Journal of Vibration and Shock,2006,25(4):142-183.(in Chinese)
[6]刘卫丰,刘维宁,DEGRANDE G.地铁列车运行引起地表振动的预测模型及其试验验证[J].振动工程学报,2010,23(4):373-379.LIU Weifeng,LIU Weining,DEGRANDE G.Experimental validation of a numerical model for prediction of metro train-induced ground-surface vibration[J].Journal o f Vibration Engineering,2010,23(4):373-379.(in Chinese)
[7]Arfiadi Y,Hadi M N S.Passive and active control of three-dimensional buildings[J].Earthquake Engineering and Structural Dynamics,2000,29(3):377-396.
[8]徐忠根,周福霖,孔玲.国内外建筑隔震改造加固概述[J].华南建设学院西院学报,1999,7(2):14-20.XU Zhonggen,ZHOU Fulin,KONG Ling.A survey of retrofitting buildings with isolation technique at home and abroad[J].Journal of South China Construction University(West Compus),1999,7(2):14-20.(in Chinese)
[9]范夕森,徐红云,任淑贞,等.历史建筑的隔震加固技术研究[J].山东建筑大学学报,2010,25(3):255-258.FAN Xisen,XU Hongyun,REN Shuzhen,et al.Research on seismic isolation retrofit of historical buildings[J].Journal of Shandong Jianzhu University,2010,25(3):255-258.(in Chinese)
[10]申跃奎,丁浩民,陆秀丽.地铁激励下房屋的环境振动与隔振设计[J].建筑结构,2010,40(10):78-81.SHEN Yuekui,DING Jiemin,LU Xiuli.Environment vibration induced by subway and vibration isolation of a building[J].Building Structures,2010,40(10):78-81.(in Chinese)
[11]DB31/T470-2009城市轨道交通(地下段)列车运行引起的住宅建筑室内结构振动与结构噪声限值及测量方法[S].上海:上海市质量技术监督局,2010.
[12]GB/T50533-2005住宅建筑室内振动限值测试国家标准[S].北京:中国建筑工业出版社,2005.
[13]楼梦麟;李守继.地铁引起建筑物振动评价研究[J].振动与冲击,2007,26(8):68-71.Evaluation of buildings’vibration induced by under ground trains[J].Journal of Vibration and Shock,2007,26(8):68-71.(in Chinese)
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