王德宝;马宏昊;沈兆武;范志强;
WANG De-bao;MA Hong-hao;SHEN Zhao-wu;FAN Zhi-qiang;Department of Modern Mechanics,University of Science and Technology of China;

• 1:中国科学技术大学近代力学系

摘要(Abstract)：

以某市地下人防工程基坑爆破为例,介绍了城市复杂环境下基坑爆破开挖技术。通过优化爆破网路、布置减振孔、设置减振爆区等减振措施成功控制了爆破振动对周边被保护建筑的危害。爆破振动监测结果表明,对于高层框架式结构建筑物,爆破振动信号中的高频成分比低频成分更易于衰减;并且楼房顶层振动速度、振动持时及主频率等特征参数均低于底层,可以为相关爆破工程提供参考。
Taking the foundation pit blasting of underground defence tunnel project as example,the blasting technique of foundation pit excavation under urban complex environment was introduced.The blasting vibration was controlled through the measures of optimizing blasting network,excavating damping holes and setting up damping region,surrounding buildings were successfully protected from vibration damage.Blasting vibration monitoring results showed that the high-frequency component of blasting vibration signal was attenuated more easily for the building with high frame-type structure compared to the lowfrequency component.Moreover,the characteristic parameters of vibration velocity,vibration duration and main frequency of the top floor were larger than the ground floors.It could provide a reference for similar projects.

关键词(KeyWords)： 基坑;减振措施;多层楼房;振动分析;振动监测
Foundation pit;Vibration damping measures;Multi-story building;Vibration analysis;Vibration monitoring

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 王德宝;马宏昊;沈兆武;范志强;
WANG De-bao;MA Hong-hao;SHEN Zhao-wu;FAN Zhi-qiang;Department of Modern Mechanics,University of Science and Technology of China;

参考文献(References)：

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