古建筑防工业振动的研究
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摘要
为防止工业振源引起的地面振动对古建筑结构的危害,本课题对古建筑结构的容许振动、动力特性和响应计算、古建筑结构现状的判断、地面振动传播等进行了研究。通过对主要的工业振源和有代表性的古建筑的大量现场实测、室内实验和理论分析研究,取得了以下主要成果:(1)提出以疲劳极限作为确定古建筑结构容许振动的依据;(2)建立了殿堂、楼阁、古塔、钟鼓楼、宫门等的动力特性计算模型;(3)应用波动理论判断古建筑结构的应力现状;(4)得出不同土层中振源频率随距离变化的规律。以上成果均已纳入国家标准《古建筑防工业振动技术规范》。
In order to protect historic building structures from the harmful effects of ground vibration induced by man-made sources this subject has carried on investigation in allowable vibration of historic building structures, calculation of response,judgment of present situation,propagation of ground vibration and etc.Through a lot of field and laboratory tests and the theoretical analysis of major man-made sources and nationally survey of representative historic buildings,the main results have been achieved as follows;(a)The fatigue limit is taken as the base of deter- mining the allowable vibration of historic building structures;(b) The models are set up for calculating the dynamic characteristics of palatial hall,storeyed building,ancient pagoda,bell-tower,drum-tower,palace gate and etc;(c) The theory of wave motion is applied to judge the present condition of historic building structural stress;(d) Law of the frequency of vibration source varing with the distance in different kinds of soil layer is obtained.The above results have been adopted by the national standard-Technical Specifications for Protection of Historic Buildings against Man-made Vibration.
In order to protect historic building structures from the harmful effects of ground vibration induced by man-made sources this subject has carried on investigation in allowable vibration of historic building structures, calculation of response,judgment of present situation,propagation of ground vibration and etc.Through a lot of field and laboratory tests and the theoretical analysis of major man-made sources and nationally survey of representative historic buildings,the main results have been achieved as follows;(a)The fatigue limit is taken as the base of deter- mining the allowable vibration of historic building structures;(b) The models are set up for calculating the dynamic characteristics of palatial hall,storeyed building,ancient pagoda,bell-tower,drum-tower,palace gate and etc;(c) The theory of wave motion is applied to judge the present condition of historic building structural stress;(d) Law of the frequency of vibration source varing with the distance in different kinds of soil layer is obtained.The above results have been adopted by the national standard-Technical Specifications for Protection of Historic Buildings against Man-made Vibration.
引文
[1]DIN 4150-3 Translation by DIN-Sprachendienst.Structural vibration. Part 3:Effects of vibration on structures[S].German Standard. DIN-4150-3,1999.
[2]Mechanical vibration and shock——Vibration of buildings——Guidelines for the measurement of vibration and evaluation of their effects on buildings[S].International Standard.ISO4866,1966.
[3]Evaluation and measurement for vibration in buildings[S].British Standard.BS7385,1990.
[4]傅祥炯.结构疲劳与断裂[M].西安:西北工业大学出版社, 1995. FU Xiang-jiong.Fatigue and rupture of structure[M].Xi'an: Northwest Industry University Press,1995.
[5]王光远.建筑结构的振动[M].北京:科学出版社,1978. WANG Guang-yuan.Vibration in building structure[M].Beijing: Science Press,1978.
[6]彭克中,黄龙生.烟囱的自振特性[C]//地震工程研究报告集,第二集.北京:科学出版社,1965. PENG Ke-zhong,HUANG Long-sheng.Natural vibration properties of Chimney[C]//Report Collection of Study on Earthquake Engineering, PartⅡ.Beijing:Science Press,1965.
[7]李德葆.振动模态分析及其应用[M].北京:宇航出版社,1989. LI De-bao Modal analysis with applications[M].Beijing:Yu Huang Press,1989.
[8]振动计算与隔振设计组.振动计算隔振设计[M].北京:中国建筑工业出版社,1976. Vibration calculation and isolation design group.Vibration calculation and isolation design[M].Beijing:Chinese Building Industry Press,1976.
[2]Mechanical vibration and shock——Vibration of buildings——Guidelines for the measurement of vibration and evaluation of their effects on buildings[S].International Standard.ISO4866,1966.
[3]Evaluation and measurement for vibration in buildings[S].British Standard.BS7385,1990.
[4]傅祥炯.结构疲劳与断裂[M].西安:西北工业大学出版社, 1995. FU Xiang-jiong.Fatigue and rupture of structure[M].Xi'an: Northwest Industry University Press,1995.
[5]王光远.建筑结构的振动[M].北京:科学出版社,1978. WANG Guang-yuan.Vibration in building structure[M].Beijing: Science Press,1978.
[6]彭克中,黄龙生.烟囱的自振特性[C]//地震工程研究报告集,第二集.北京:科学出版社,1965. PENG Ke-zhong,HUANG Long-sheng.Natural vibration properties of Chimney[C]//Report Collection of Study on Earthquake Engineering, PartⅡ.Beijing:Science Press,1965.
[7]李德葆.振动模态分析及其应用[M].北京:宇航出版社,1989. LI De-bao Modal analysis with applications[M].Beijing:Yu Huang Press,1989.
[8]振动计算与隔振设计组.振动计算隔振设计[M].北京:中国建筑工业出版社,1976. Vibration calculation and isolation design group.Vibration calculation and isolation design[M].Beijing:Chinese Building Industry Press,1976.
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