文档介绍：四川建筑科学研究第 36 卷第 3 期
154 Sichuan Building Science 2010 年 6 月
地铁隧道开挖爆破对地表建筑物的振动影响
侯爱军
,
洛阳理工学院建筑工程系河南洛阳 471000
,
摘要在对地铁隧道开挖时的爆破地震效应和参数分析的基础上针对地面建筑结构对爆破振动的响应进行了理论分析。
通过对深圳地铁隧道开挖爆破在地面产生的爆破地震波的现场监测和分析,得到了爆破振动在地表建筑物中产生的质点振
, ,
动速度和频率等参数拟合出了振动速度、药量大小与爆源距离之间关系式。研究结果表明在近地表的地铁隧道爆破产生
, , ,
的振动频率远大于天然地震的频率一般在 100 ~ 150 Hz 这对地面建筑结构的安全是有利的以爆破振动速度标准作为地面
建筑物的安全判据是合理和可行的。
关键词地铁隧道开挖爆破建筑结构地震效应
中图分类号 TD235. 1 文献标识码 A 文章编号 1008 - 1933 2010 03 - 154 - 04
Seismic effects of blasting vibration in metro tunnel excavation
HOU Aijun
, ,
Luoyang Institute of Science and Technology Luoyang 471000 China
,
Abstract Based on analyzing seismic effects and wave parameters of the excavation blasting in metro tunnel the seismic response of
building structure under the seismic effects of blasting were analyzed theoretically. According to the seismic wave parameters measured
,
on the surface buildings in Shenzhen Metro tunnel blasting the velocity and frequency of explosion seismic wave in building were
,
determined and the relation formula among the seismic velocity and the charge quantity and the distance to the explosive source was
also obtained. The research results indicate that the vibration frequency of the surface buildings in tunnel blasting is about 100 ~ 150
, ,
Hz which is much larger than natively seismic frequency of the bulidings therefore t