Finite Element Simulation of Temperature Variations in Concrete Bridge Girders  

作　　者：Hongzhi Liu Shasha Wu Yongjun Zhang Tongxu Hu 

机构地区：[1]Shandong Urban Construction Vocational College,Jinan,250103,China [2]School of Civil Engineering,Qingdao University of Technology,Qingdao,266033,China

出　　处：《Fluid Dynamics & Materials Processing》2023年第6期1551-1572,共22页流体力学与材料加工（英文）

基　　金：supported by National Natural Science Foundation of China(Grant No.51778314).

摘　　要：The internal temperature of cast-in-place concrete bridges undergoes strong variations during the construction as a result of environmental factors.In order to determine precisely such variations,the present study relies on the finite element method,used to model the bridge box girder section and simulate the internal temperature distribution during construction.The numerical results display good agreement with measured temperature values.It is shown that when the external temperature is higher,and the internal and external temperature difference is relatively small,the deviation of the fitting line from existing specifications(Chinese specification,American specification,New Zealand specification)is relatively large and vice versa.

关 键 词：Concrete temperature gradient FE model simulation AASHTO and Chinese temperature norm temperature formula exponential monitoring 

分 类 号：TU528[建筑科学—建筑技术科学]