EXPERIMENTAL RESEARCH ON FIRE RESISTANCE OF DOUBLE-SKIN MULTI-CAVITY COMPOSITE WALL WITH STEEL TRUSS EXPOSED TO ONE-SIDE FIRE
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摘要: 为研究桁架式多腔体钢板组合剪力墙的抗火性能,对2榀墙体开展了ISO-834标准升温条件下单面受火试验,墙体分别为无防火保护和采用厚20 mm的厚涂型防火涂料保护,试验结果表明:1)无防火保护的墙体因丧失隔热性而达到耐火极限;2)厚涂型防火涂料厚度对墙体的耐火极限影响显著,有防火保护的墙体耐火极限可达180 min以上,比无防火保护的墙体提高至少1倍。
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关键词:
- 桁架式多腔体钢板组合剪力墙 /
- 抗火试验 /
- 温度 /
- 位移 /
- 耐火极限
Abstract: In order to investigate the fire resistance of double-skin multi-cavity composite wall with steel truss, two specimens were tested exposed to one-side ISO-834 standard fire. A specimen was unprotected and the other was protected by thick coated fireproof coating with a thickness of 20 mm. The test results indicated that: 1)the bare specimen reached the fire resistance limit due to the failure of thermal insulation; 2)the thickness of fireproof coating had a significant effect on the fire resistance limit. The specimen with fire protection had a fire resistance limit of more than 180 minutes which was at least twice as long as the specimen without fire protection. -
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