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EFFECT OF TRANSIENT THERMAL GRADIENT ON STRESSES IN COMPOSITE BRIDGES |
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| รหัสดีโอไอ | |
| Title | EFFECT OF TRANSIENT THERMAL GRADIENT ON STRESSES IN COMPOSITE BRIDGES |
| Creator | Caesar Abi Shdid, Omar El-Masri |
| Contributor | Didem Ozevin, Hossein Ataei, Mehdi Modares, Asli Pelin Gurgun, Siamak Yazdani, Amarjit Singh |
| Publisher | ISEC PRESS |
| Publication Year | 2562 |
| Keyword | Temperature profile, Finite element analysis, Cold regions, Construction cracks, Steel, Concrete |
| Abstract | Composite steel-concrete bridges experience higher thermally induced stresses than their concrete and steel cousins. These thermal stresses which can result from support restraints, debris accumulating in expansion joints, or from non-uniform thermal gradients, can lead to significant damage in the concrete deck. Conventional heat transfer theory in solids, in three-dimensional finite element formulation, is used to perform a sequentially coupled thermal-stress analysis in a selected single-span case study bridge. Actual environmental boundary conditions for a selected geographical region are used to develop the thermal profile. The vertical thermal gradient is shown to be largely non-linear as opposed to existing models, such as AASHTO. The thermally induced tensile stresses in the concrete are shown to be significant compared to service load stresses and constitute 60% of the tensile strength of the concrete deck. |
| ISBN | 978-0-9960437-6-2 |
| Language | English |
| URL Website | https://www.isec-society.org/ |
| Website title | ISEC Society |
