大朝山单跨拱桥爆破震动速度反应谱特征

Characteristics of Reaction Spectra of Explosion Vibration Velocity in Blasting the Dachaoshan Mono-arch Bridge

根据大朝山水电站 3# 、4 # 尾水出口砼围堰及岩埂拆除爆破振动速度监测成果 ,采用单自由度体系结构动力响应分析方法 ,建立了澜沧江大桥 (单跨拱桥 )的爆破震动速度反应谱。

On the basis of the monitoring results for the explosion vibration velocity in demolishing the No.3 and No.4 water outlet cofferdams and rocks in Dachaoshan Hydropower Station, an analysis method of mono freedom system structural dynamic response is used to establish the explosion vibration velocity spectra for the Lancangjiang bridge (a mono arch bridge),and the characteristics are analyzed to provide new data for the explosion seismic reaction calculation.