钢-混凝土双面组合箱梁日照温度场研究  

Study of Temperature Field of Double Steel-concrete Composite Box Girder by Solar Radiation

作　　者：苏靖海 段树金[1] 

机构地区：[1]石家庄铁道大学土木工程学院,河北石家庄050043

出　　处：《石家庄铁道大学学报（自然科学版）》2012年第2期6-10,80,共6页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

基　　金：河北省科技支撑计划(09215625D)

摘　　要：自然环境中的钢-混凝土双面组合箱梁受到日照作用影响,在梁体内部会产生温度应力。对某地的日气温变化及日照辐射量进行计算;利用有限元软件ANSYS进行仿真分析,计算双面组合箱梁截面在日照条件下的温度分布,对比分析正负弯矩区截面温度分布的异同,得到组合梁表面日温度变化规律;选取温差最大时的数值结果进行分析,用多项式拟合沿梁截面高度温度梯度分布。Temperature stresses will occur in the double steel-concrete composite box girder due to the sunshine.In this paper,the local temperature and the solar radiation intensity are deduced.The temperature field under the sunlight is simulated for both positive and negative moment zone section of the three span continuous double steel-concrete composite box girder by the software ANSYS.The temperature gradient curves along the section height are fitted by polynomial equations based on the numerical data of the maximum temperature difference with a good agreement.

关 键 词：钢-混凝土双面组合箱梁 太阳辐射 温度分布 温度梯度 

分 类 号：TU398.9[建筑科学—结构工程]