首先对一榀单层单跨的无粘结预应力混凝土框架进行了常温下的加载破坏试验 ,然后通过模拟真实火灾环境 ,对四榀单层单跨的无粘结预应力混凝土框架进行了不同恒载、不同升温曲线、不同预应力度各工况的火灾试验 ,并进行了试验分析 ,从而为无粘结预应力混凝土框架的火灾反应分析提供了可靠的数据 Firstly, a single-span single-span unbonded prestressed concrete frame was subjected to a loading failure test at room temperature. Then four different frames of unbonded prestressed concrete frame with four single-span single-span were simulated by simulating real fire environment Constant load, different temperature rise curves and different prestressing conditions were tested and analyzed experimentally, which provided reliable data for fire response analysis of unbonded prestressed concrete frame