期刊论文

Experimental Study on Fire Resistance of Reinforced Concrete Frame Structure

中文

湘潭大学学报(自然科学学报)

2096-644X

2017

39

1

28-33

10.13715/j.cnki.nsjxu.2017.01.007

国家自然科学基金项目（51178474）；

本校为第一机构

对9个钢筋混凝土门式框架结构按ISO834标准升温曲线进行火灾试验和火灾后与常温下框架结构对比静载试验,初步探讨了火烧前荷载和温度对火烧后门式框架结构力学性能的影响,以及框架结构的剩余强度与温度的关系.试验表明:火烧温度比火烧荷载对试件的影响更大,受较大火烧荷载的试件,在经受较高温度后,承载力与变形等力学性能发生了较大的改变.当火烧温度为600 ℃时门式框架结构极限承载力下降36.9%,800 ℃时门式框架结构极限承载力下降48%,1 000 ℃时门式框架结构极限承载力下降达57.3%,基本丧失承载能力.

The fire tests including fire load and fire temperature had been conducted to nine reinforced concrete frame structures with ISO834 standard heating up curve.Furthermore,the static load tests had also been done under room temperature to the above nine structures after cooling and one reinforced concrete frame structure which with the same shape and size but had not undergone the fire test.The experiments showed that the fire temperature effect on the specimen was larger than the fire load.The larger fire load and higher temperature of the speci...