【摘要】 不锈钢结构具有造型美观、易于维护、可回收利用、耐腐蚀性能优良等优点，在建筑结构领域具有广阔的应用前景。然而，目前国内外对于不锈钢结构整体抗火性能的研究十分匮乏。基于第十一届江苏省园艺博览会“未来花园”展区，开展了不锈钢树状支撑有机玻璃水幕体系的缩尺模型火灾试验。根据佛罗德相似原理，搭建一1:4缩尺模型，采用0.3m×0.3m的油盘火作为火源，采用正庚烷作为燃料，火源功率为100kW。试验探究了真实火灾下火源上方的空气温度、有机玻璃顶棚下方的空气温度以及不锈钢结构表面温度和热辐射强度的变化情况。此外，利用FDS软件对空气温度场开展了数值模拟，尽管由于风速等环境因素，试验获得的空气温度场波动较大，但总体而言，二者吻合较好。更多还原

【Abstract】 Stainless steel structures have many advantages, such as beautiful appearance, easy maintenance and recycling. excellent corrosion resistance, which has broad application prospects in building structures. However, current research on the fire resistance of stainless steel structures is very scarce at home and abroad. Based on the Future Garden of 11th Jiangsu Provincial Garden Expo, a scale fire test of acrylic curtain system supported by stainless steel tree-shaped structures was carried out. According to the Froude similarity principle, a 1:4 scale model was built, a pool fire of 0.3m×0.3m was adopted as fire source, and N-heptane was used as fuel. The fire heat release rate was 100kW. The air temperatures above the fire source as well as that underneath the acrylic plates and structural surface temperatures as well as thermal radiation intensity of stainless steel structures were investigated. Besides, numerical simulation of air temperatures was conducted by using FDS software. Although the air temperature in the test fluctuated greatly subjected to environmental factors such as wind speed, the results of test and numerical simulation fit well generally.更多还原