Review on long-term deformation and mechanical properties of damaged concrete structures
Concrete structures will be subjected to complex environmental and loading effects during service,and these complex effects will cause damage to the structure,which will not only cause the internal force redistribution of the structure,but also lead to the deterioration of the structural member's resistance performance,increase the long-term deformation of the structure,and bring a series of structural safety problems.Most of the existing studies on the long-term deformation of concrete structures mainly focus on the creep as the main object of investigation,with less consideration of other environmental and loading effects,and the long-term deformation law and mechanical property degradation of concrete structures with different damages under the coupling effect have not been adequately investigated.The relevant research on long-term deformation of damaged concrete structures was analyzed,and the long-term deformation and mechanical properties of concrete structures under environmental erosion,cyclic loading and complex loading effects were evaluated.Finally,the contents and development trends that need to be improved were proposed.