钢-混凝土组合箱梁桥沥青摊铺温度场的试验与理论对比分析  

Temperature experiment and analysis of steel-concrete composite girder bridge caused by asphalt paving

作　　者：陈晓强[1] 刘其伟[1] 

机构地区：[1]东南大学交通学院,江苏南京210096

出　　处：《铁道科学与工程学报》2009年第5期5-10,共6页Journal of Railway Science and Engineering

基　　金：江苏省交通科学研究项目(03y031)

摘　　要：在沥青高温摊铺期间,桥梁结构受到高温沥青热传导、太阳辐射、空气对流换热和桥梁表面与大气之间的辐射换热的作用,边界条件复杂,结构温度场具有时间和空间不断变化的特点。介绍了润扬大桥南接线实桥沥青摊铺期间温度场的测试结果,在实测资料的基础上,总结出实桥沥青摊铺温度场的规律。借助有限元分析软件,用空间三维计算模型、纵向平面模型和横向平面模型进行理论分析,最终确定用考虑边界条件和覆盖沥青前的不同初始温度场的横向平面模型来进行计算。通过实测数据与理论计算结果的对比分析,验证了该方案的可靠性。During asphalt paving, the bridge structure was affected by hot asphalt, solar radiation, convection and radiative heat transfer between air and the surface. The boundary is complex and so the temperature field is variable with time and space. The feature was generalized after the test and measurement of actual bridge, south connection line of Runyang Bridge . By means of ANSYS software, the final calculation program was found out by analyzing tridimensional model, longitudinal and transverse plane model. A certain number of transverse planar models can be used to represent the temperature of whole bridge, which is verified by comparing the theoreti- cal calculation and observed value.

关 键 词：钢-混凝土组合结构 沥青摊铺 温度场 试验 

分 类 号：U448.38[建筑科学—桥梁与隧道工程]