Simulative analysis of construction joints on RC structure

According to the seismic damage investigation in Wenchuan,the effect of construction joints which can′t be avoided in cast-in-situ reinforced concrete structure should be noted.The influence of construction joints is not considered in regular nonlinear numerical simulation,which deviates from the truth.Through analysis of stress characteristics of rebar and concrete,this thesis develops a mechanics model describing the seismic response of joints.so as to find out the cause of earthquake damage.On this basis,it builds up the finite element model of construction joints applied to massive structure.The results show that this new analysis method can help obtain better interpretations with earthquake disaster phenomena.