Open AccessExperimental records based-simplified modeling of mean temperatures of steel beams in open environment
Author(s) -
Sallal R. Abid,
Hussein Al-Bugharbee
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/988/1/012034
Subject(s) - girder , wind speed , beam (structure) , radiation , air temperature , structural engineering , thermal , materials science , mean radiant temperature , environmental science , temperature measurement , meteorology , atmospheric sciences , optics , engineering , geology , physics , thermodynamics , climate change , oceanography
Solar radiation and air temperature hourly, daily and seasonally variation is of a noticeable impact on bridge girders and other exposed structures. The time-dependent changing of the mean temperature of the girder and the complete superstructure is the key parameter to calculate support movements and rotations. Based on an experimental measurement from a steel beam installed in an open environment, the mean temperature variation of steel beams could be studied and modeled in this investigation. The experimental records included steel temperatures of web and flanges, solar radiation and air temperature and speed. The recorded thermal measurements were used to obtain correlation relationships that describe the mean temperatures of the web, flanges and the whole beam in terms of wind speed, air temperature and solar radiation. These correlation relationships were validated using a part of the experimental data. The results showed that predicted models has good correlation coefficients.