钢管发泡混凝土构件径厚比的确定及应用展望(修改三).docVIP

钢管发泡混凝土构件径厚比的确定及应用展望 孔繁力 李洪伟 王诚志 崔国玉 王春 东北电力设计院，吉林长春 130021The ratio of diameter to thickness determination and application prospect of a component of steel tube cellular concrete Fanli Kong , Hongwei Li , Chengzhi Wang , Guoyu Cui , Guofu Wang , Chun Wang Northeast Electric Power Design Institute, Changchun City , Jilin Province ,130021 Heilongjiang Electric Power?Research Institute of economics and technology , Haerbin city，Heilongjiang Province,150036 Abstract：Through the analysis of interaction of thin-walled circular steel tube and the internal foam concrete，Can draw a stress-strain relationship between thin wall round steel tube and foam concrete and the acting force between them。With reference to the research?of previoussteel pipe production?process，The?steel pipe?manufacture?requirements of the maximumdiameter to thickness ratio，Derive allow deflection range maximum diameter to thickness ratio of steel tube。The combination of the two，Can determine the foaming concrete pipe diameter to thickness ratio of 180，It can break the diameter to thickness ratio of 《Code for design of steel structures》 limited。A component of steel tube cellular concrete，the foamed concrete is very light(Density0.3~0.5kN/m3），a component of steel tube cellular concrete can be made into solid or hollow component，so the pipe is very light。Due to the adoption of high strength steel，steel consumption is reduced nearly 50%，economic, social benefit is very obvious。A component of steel tube cellular concrete can be used for steel tube of pole power transmission project、the frame column of transformer engineering、frame beam、bracket and so on。A component of steel tube cellular concrete has the widespread application prospect。 Key words：A component of steel tube cellular concrete；Thin-walled circular steel tube；Radius-thickness ratio 摘 要：通过对薄壁圆钢管与内部发泡混凝土的相互作用分析，可以得出钢管发泡混凝土构件的应力－应变关系及二者间的作用力，推导出钢管出现局部屈曲的临界应力和临界径厚比；参照以往钢管制作工艺的研究成果，确定出钢管加工制作要求的最大径厚比。以上二者相结合，可以确定钢管发泡混凝土构件径厚比为180，从而突破《钢结构设