Characteristics of Multi-Storied Brick-and-Concrete Buildings Response to Blasting Vibration of Tunnel Excavation

摘要

According to fire station of Tuandao road along to the Yunnan road tunnel of Qingdao Cross-harbor Tunnel Guide Line Project, the blasting vibration test was carried on. This building is three-storied brick-and-concrete building. Then monitoring data of particle vibration velocity was analysised and researched. The results showed that there is magnifying effect of vertical vibration velocity on the roof of the building, but its value is lesser than particle vibration velocity of the first layer. Horizontal tangential vibration velocity was existed on the central of the building. However there was no magnifying effect of horizontal radial vibration velocity. And its value is decreased rapidly from the first layer to the second layer, and then other floors basically keep steady.