钢-混组合梁桥有效温度取值的地域差异性

马志元,刘江,刘永健,吕毅,张国靖

Regional difference of value taking of effective temperature for steel-concrete composite girder bridges

Zhi-yuan MA,Jiang LIU,Yong-jian LIU,Yi LYU,Guo-jing ZHANG

表 1 组合梁材料热工参数

Tab.1 Thermal parameters of composite girder

材料 ρ/(kg∙m−3) c/(J∙kg−1∙K−1) λ/(W∙m−1∙K−1) α ε 钢 7850 460 55.000 0.50 0.80 混凝土 2300 900 3.000 0.40 0.85 空气 1.293 1000 0.027 − −