爆破震动对邻近建筑物的危害

在广州数个临近建筑爆破实例的基础上 ,对点源爆破地震波辐射时程效应进行了理论分析 ,并以模拟调整的实测爆破地震波 ,应用时程分析法计算了建筑结构和非结构的地震响应。在使用超过安全规程允许的药量进行临近建筑的浅眼爆破时 ,除了利用计算方法校验爆破震动对建筑物的影响外 ,还应采取稳妥的试爆措施 ,并配合薄弱结构处的震动监测 ,才能确保爆破安全。利用本文推荐的方法 ,解决了建筑物附近爆破的设计与施工问题

DESTRUCTIVE EFFECT OF BLASTING VIBRATION ON NEARBY STRUCTURES

Based on several examples of blasting near to buildings in Guangzhou, the time distance effect of blasting seismic waves from a point explosion source was theoretically analyzed. In the light of the measured blasting seismic waves, the vibration responses of structure and non structure of buildings were calculated by the time distance effect analysis method. When the short hole blastings with the charge amount over the allowance in “Safety Regulations” were conducted, some safer testing blasts and the concerted vibration monitoring on weak structure points should be carried out as well as the influence of blasting vibration on nearby buildings was checked by calculation methods, thus ensuring blasting safety. The problems on design and construction of the blastings near to buildings had been solved by use of the method recommended in this paper.