【摘要】 对建筑结构火灾中的倒塌事故进行预警是当前建筑灭火救援亟需研究的内容。对现有的倒塌预警手段进行了梳理分析,指出其优势与不足之处,针对当前的预警手段仍集中于"单点探测",在部分典型建筑的火灾救援中应用受限等问题,着重对干涉雷达的使用进行了介绍,对雷达波穿透大空间局部火焰体的性能开展了测试。研究发现:干涉雷达波基本不受油盘火焰影响,整体装置误差处于亚毫米级,但在使用中应注意区分非结构构件引起的变形,并建议完善使用多雷达组合获得关键构件空间坐标的方法,开发的基于区域探测的预警装置及算法,对重要建筑在使用全寿命中的位移进行监测。更多还原

【Abstract】 The research on the early warning means of collapse of building structure in fire accidents is an urgent need for current building fire extinguishing and rescue.The author combed and analyzed the characteristics of the proposed collapse warning means, pointed out their advantages and disadvantages,emphatically addressed the application of Interferometric Radar,and tested the performance of radar waves penetrating localized fire plumes in large space.The results indicate that: the current early warning means are mainly focused on "single point detection",and the application in some typical building fires is limited;the interference radar wave is basically not influenced by the flame of oil pan, and the total error of device is in the submillimeter level, but attention should be paid to distinguish the deformation caused by some non-structural elements.It is suggested that the method of obtaining the spatial coordinates of key member through the combined use of multiple radars should be improved, and the early warning device and algorithm based on regional detection should be built, and the deformation monitoring means for the whole life cycle of important buildings should be developed.更多还原