中文摘要：

利用多通道全波形数字声发射仪，对足尺钢筋混凝土双向板的火灾行为进行连续监测，得到双向板在火灾下破坏过程中各个声发射参数的变化情况，并对声发射定位技术在混凝土中的应用进行了讨论．研究表明利用声发射对建筑结构在火灾下的监测是一种可行有效的方法，为高温下混凝土的声发射研究和建筑结构火灾声发射检测打下了试验基础．

英文摘要：

In this paper, the behavior on the full-scale two-way reinforced concrete simply-supported slabs under fire is monitored by all-digital multi-channel acoustic emission device. The parametric variation of acoustic emission during the destruction of two-way reinforced concrete simply-supported slabs under fire is obtained. The application of acoustic emission allocation in concrete is discussed. The research a- bout acoustic emission proves that its an effective method to monitor the reinforced concrete structures under fire. It will build a foundation for acoustic emission research and monitoring acoustic emission of construction structures under fire.