Abstract:
The creep of reinforced concrete member can be used to estimate the long term deformation of structures such as large bridges. It is not only relevant to the creep characteristics of concrete, but its values involve the members’ reinforcement and stress state. Reinforced concrete members are the object of study in this paper. The calculation method for the creep coefficient of reinforced concrete members under axial compression or compression-bending is derived. The difference of results, which are calculated by means of the creep equations under recoverable, unrecoverable and partly-recoverable creep deformation, is analyzed. The concrete standard specimens and reinforced concrete compression columns and rectangular beams are used for the creep tests, and the test results are compared with the calculation results. The analyses show that the calculation results by three creep equations presented in this paper are similar to the test results and can be applied expediently.