两种不同建筑物的振动特性分析
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摘要
建筑物的振动响应不但跟建筑物的振动特性有关,而且跟输入的振动波有关。为研究两种不同的建筑物的振动响应差异,应输入近似相同振动波,测定其响应差异。针对隧道洞口爆破施工时监测相邻两种不同建筑物响应,结果发现:低矮的砌体结构和高层框架结构各自的振动频率、应力、应变不同,前者跟爆破频率较接近,容易产生共振,而且前者抗震能力差,所以其损坏程度远大于后者,并通过数值模拟分析,验证其具有同样的损坏规律,说明监测与模拟结果的合理性。此结论为隧道洞口爆破设计施工提供参考。
The vibration response of building is relevant to vibration properties of buildings and vibration waves.Therefore,it is necessary to research the vibration properties of different buildings. In order to find different vibration properties of two buildings,the monitoring at the same time was conducted to them and there was the same vibration waves broadcasting. It is found that there were different vibration frequency,stress and strain for short building and high frame structure. The former is near blasting frequency to lead to damage for resonating and more seriously destroy than the latter. And numerical simulation was conducted and the same conclusion was gotten. It is proved the two methods was effective and available. The conclusions were referred to design of blasting at the entrance of tunnels.
The vibration response of building is relevant to vibration properties of buildings and vibration waves.Therefore,it is necessary to research the vibration properties of different buildings. In order to find different vibration properties of two buildings,the monitoring at the same time was conducted to them and there was the same vibration waves broadcasting. It is found that there were different vibration frequency,stress and strain for short building and high frame structure. The former is near blasting frequency to lead to damage for resonating and more seriously destroy than the latter. And numerical simulation was conducted and the same conclusion was gotten. It is proved the two methods was effective and available. The conclusions were referred to design of blasting at the entrance of tunnels.
引文
[1]魏文晖,卢哲安.爆破地震波作用下框架结构与地基共同工作的非线性动力分析[J].世界地震工程,2004,20(2):95-100(Wei Wenhui,Lu Zhean.A nonlinear dynamic analysis of the frame structure and foundation interaction under the action of blasting seismic waves[J].World Earthquake Engineering,2004,20(2):95-100(in Chinese))
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[3]李永梅,孙国富.砌体房屋的爆破地震破坏机理和模型[J].北京工业大学学报,2001,27(1):61-63(Li Yongmei,Sun Guofu.Blasting earthquake damage mechanisms and mechanic model of masonry[J].Journal of Beijing Polytechnic University,2001,27(1):61-63(in Chinese))
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[5]谭忠盛,杨小林,王梦恕.复线隧道施工爆破对既有隧道的影响分析[J].岩石力学与工程学报,2003,22(2):281-285(Tan Zhongsheng,Yang Xiaolin,Wang Mengshu.Effect of blast in double line tunnel on existing tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(2):281-285(in Chinese))
[6]周希圣,习哲,罗志阳,等.南京地铁1#线隧道典型区段施工技术[J].岩石力学与工程学报,2004,23(20):3523-3528(Zhou Xisheng,Xi Zhe,Luo Zhiyang,et al.Synthetic construction technique for typical region of No.1line of Nanjing metro[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(20):3523-3528(in Chinese))
[7]林从谋,逄焕东,王其升,等.隧道掘进爆破地震峰值神经网络预报研究[J].岩土力学,2004,25(增):125-127(Lin Congmou,Pang Huandong,Wang Qisheng,et al.Study on neural network prediction of peak amplitude of blasting ground vibration for tunneling[J].Rock and Soil Mechanics,2004,25(S):125-127(in Chinese))
[8]陈庆,王宏图,胡国忠.隧道开挖施工的爆破振动监测与控制技术[J].岩土力学,2005,26(6):964-969(Chen Qing,Wang Hongtu,Hu Guozhong.Monitoring and controlling technology for blasting vibration induced by tunnel excavation[J].Rock and Soil Mechanics,2005,26(6):964-969(in Chinese))
[9]赵东平,王明年.小净距交叉隧道爆破振动响应研究[J].岩土工程学报,2007,29(1):116-119(Zhao Dongping,Wang Mingnian.Study on influence of blasting vibration on cross tunnels with small clearance[J].Chinese Journal of Geotechnical Engineering,2007,29(1):116-119(in Chinese))
[10]郭建群,张继春,许海亮.人和场隧道掘进爆破的地震效应试验研究[J].中国铁道科学,2003,24(4):92-95(Guo Jianqun,Zhang Jichun,Xu Hailiang.Seismic effects on drive blasting in Renhechang tunnel[J].China Railway Science,2003,24(4):92-95(in Chinese))
[2]娄建武.普通民房爆破振动破坏分析[J].爆破,2000,17(4):5-10(Lou Jianwu.Analysis on vibration response and damage of low-rise residential house caused by blasting[J].Blasting,2000,17(4):5-10(in Chinese))
[3]李永梅,孙国富.砌体房屋的爆破地震破坏机理和模型[J].北京工业大学学报,2001,27(1):61-63(Li Yongmei,Sun Guofu.Blasting earthquake damage mechanisms and mechanic model of masonry[J].Journal of Beijing Polytechnic University,2001,27(1):61-63(in Chinese))
[4]彭道富,李忠献,杨年华.近距离爆破对既有隧道的振动影响[J].中国铁道科学,2005,26(4):73-76(Peng Daofu,Li Zhongxian,Yang Nianhua.Vibration effect on the working tunnel induced by an adjacent blasting[J].China Railway Science,2005,26(4):73-76(in Chinese))
[5]谭忠盛,杨小林,王梦恕.复线隧道施工爆破对既有隧道的影响分析[J].岩石力学与工程学报,2003,22(2):281-285(Tan Zhongsheng,Yang Xiaolin,Wang Mengshu.Effect of blast in double line tunnel on existing tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(2):281-285(in Chinese))
[6]周希圣,习哲,罗志阳,等.南京地铁1#线隧道典型区段施工技术[J].岩石力学与工程学报,2004,23(20):3523-3528(Zhou Xisheng,Xi Zhe,Luo Zhiyang,et al.Synthetic construction technique for typical region of No.1line of Nanjing metro[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(20):3523-3528(in Chinese))
[7]林从谋,逄焕东,王其升,等.隧道掘进爆破地震峰值神经网络预报研究[J].岩土力学,2004,25(增):125-127(Lin Congmou,Pang Huandong,Wang Qisheng,et al.Study on neural network prediction of peak amplitude of blasting ground vibration for tunneling[J].Rock and Soil Mechanics,2004,25(S):125-127(in Chinese))
[8]陈庆,王宏图,胡国忠.隧道开挖施工的爆破振动监测与控制技术[J].岩土力学,2005,26(6):964-969(Chen Qing,Wang Hongtu,Hu Guozhong.Monitoring and controlling technology for blasting vibration induced by tunnel excavation[J].Rock and Soil Mechanics,2005,26(6):964-969(in Chinese))
[9]赵东平,王明年.小净距交叉隧道爆破振动响应研究[J].岩土工程学报,2007,29(1):116-119(Zhao Dongping,Wang Mingnian.Study on influence of blasting vibration on cross tunnels with small clearance[J].Chinese Journal of Geotechnical Engineering,2007,29(1):116-119(in Chinese))
[10]郭建群,张继春,许海亮.人和场隧道掘进爆破的地震效应试验研究[J].中国铁道科学,2003,24(4):92-95(Guo Jianqun,Zhang Jichun,Xu Hailiang.Seismic effects on drive blasting in Renhechang tunnel[J].China Railway Science,2003,24(4):92-95(in Chinese))
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