Test Analysis of Environmental Effect on Concrete Structural Feature Parameters

Abstract:

An experiment was made to investigate the environmental effect,including environmental temperature and humidity,on concrete structural feature parameters.First,the experiment condition was introduced.Then,based on a concrete continuous supported beam model,an analysis was made of the environmental temperature effect on structural modal frequencies,especially the nonlinear effect of freezing.Finally,the environmental humidity effect on structural mass was validated by a concrete block experiment.Results show that the humidity is of an obvious timelag effect on structural mass.

Key words:structural health monitoring; environmental factor; model experiment; feature parameter