Effects of temperature in bridge design (AGB2001/475)
Overview
Background & policy context:
The temperature variations in the structures cause lengthening, shortening or curvature of the beams due to a non-linear distribution of temperature. Such circumstances create stresses if conditions do not allow free deformations.
Temperature changes in the sections of bridge girders depend on many parameters related to the materials used, the shape and dimensions of the bearing elements, their coating, exposure and sunlight conditions.
Objectives:
The purpose of the work is firstly to clarify the role actually played by the effects of temperature in the modern design of structures and to provide practical and simple rules to justify these effects. On the other hand, a better understanding of the behaviour of composite structures under thermal effects should identify the type of facilities most sensitive to the effects of temperature. This new knowledge leads to design structures that are less sensitive to thermal effects.
Methodology:
Field tests, modelling, statistical computations.
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