Residual Crack Widths of Rc&pc Structures under Cyclic Actions
نویسندگان
چکیده
This paper discusses the influence of minimum reinforcement on the cracking behaviour of prestressed concrete structures. It deals with the observation and modelling of the reclosing of cracks induced by a permanent compressive stress due to prestressing. A computerised proposed model allows to determine steel-to-concrete slip, bond stress, concrete stress and steel stress along the transmission length (between the cracked section and the homogeneous section (state I)). Good agreement was observed between the analytical model and the results of 11 large scale tests of RC & PC tie elements performed at EPFL. This paper also presents some applications and conclusions of a large parametric study performed using the analytical model.
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