摘要
以某一爆破拆除工程为例,通过近景摄影测量系统(包括近景摄影和图像处理),对建筑爆破拆除倒塌过程进行了定量分析,获得建筑倒塌运动过程中位移、转角、平动速度、转动角速度等参数。摄影测量数据与建筑倒塌过程的各受力状态进行了对比分析,提出将建筑物的倒塌过程分为爆破切口形成阶段、自由落体阶段、冲击撞地阶段和转动坍落阶段。
Through using the measurement system of close-range photogrammetry,including photography and image processing,the movement of building-collapse during blasting demolition was quantitatively analyzed.Based on the obtained results,such as displacement,rotation angle,movement velocity and rotation velocity,the rule of building-collapse due to blasting demolition was discussed.By comparing analysis of measuring data with the force involving in the process of collapse,the building collapse was suggested to be divided into four periods.namely,the formation of blasting cut,free-dropping of structure,impact to the earth and rotation-collapse.
出处
《工程爆破》
2007年第3期8-13,17,共7页
Engineering Blasting
基金
广东省科技计划资助(2006B37301005)
关键词
拆除爆破
近景摄影测量
定量分析
运动分析
Blasting demolition
Close-range photogrammetry
Quantitative analysis
Movement analysis
