日照影响下波形钢腹板箱梁温度分布数值分析

Numerical analysis on temperature distribution of corrugated steel web box girder under the influence of sunlight

在波形钢腹板箱梁桥中,温度场的变化对桥梁结构的影响不容小觑。在此基础上,对波形钢腹板梁桥进行了151d的温度场测试。本项目以实体桥为研究对象,通过构建2D波形钢腹板温度场有限元模型,选择典型气象因素进行数值仿真,并与实测数据进行比较,验证该方法的正确性。最终结果表明,上、下两个点的温度测量结果存在着一定的滞后,其变化范围和温度的变化范围都很小。

In the box girder bridge with corrugated steel web,the influence of the change of temperature field on the bridge structure can not be underestimated.On this basis,the temperature field of the corrugated steel web girder bridge was tested for 151 days.This project takes the solid bridge as the research object,through the construction of the finite element model of the temperature field of 2D corrugated steel web,the typical meteorological factors are selected for numerical simulation,and compared with the measured data to verify the correctness of the method.The final results show that there is a certain lag in the temperature measurement results of the upper and lower points,and the variation range and temperature range are very small.