摘要
以深圳地铁7号线华新站繁华商业区基坑爆破开挖施工为工程背景,运用FLAC3D模拟基坑周边建筑物在各种炸药单耗量的工况下的动力响应特性,并分析炸药单耗量对周边建筑物震动动力时程的最大震速的影响,通过拟合炸药单耗量和各建筑物的最大振动速度的数值关系式,得出临界震动速度所对应的炸药单耗量,以达到炸药单耗量优化的目的。
Based on foundation pit blasting excavation engineering construction in downtown bustling commercial area of Shenzhen Metro Line 7 Huaxin station, adopting FLAC3D and simulating the dynamic response characteristics of foundation pit surrounding buildings under various explosive unit consumption conditions to analyze the influence on the maximum vibration velocity of dynamic time history of the surrounding buildings. By fitting the relationship between the explosive unit consumption and the maximum vibration velocity of the buildings, we can get the explosive unit consumption corresponding to critical vibration velocity and achieve the purpose of explosive unit consumption optimization.
出处
《路基工程》
2017年第6期174-178,共5页
Subgrade Engineering
关键词
基坑爆破
炸药单耗量
动力计算
动力响应
最大震速
foundation pit blasting
explosive unit consumption
dynamic calculation
dynamic response
maximum vibration velocity
