Abstract
In order to obtain the accurate numerical simulation of seismic performance for steel reinforced concrete (SRC) frame columns, a convenient and reliable numerical simulation method needs to be established. Based on the test results, a numerical simulation method of SRC frame column based on the finite length plastic hinge (FLPH) was proposed in this paper. The plastic hinge element model was obtained through analyzing the failure process of SRC column. The length of plastic hinge for SRC column was expressed by considering the contribution of bending effect and strain penetration effect in the plastic deformation of members furtherly. On the basis of the numerical integration method, the FLPH model suitable for SRC frame column was established by introducing the section stiffness correction coefficient at the integral point of the element. Finally, using the OpenSees finite element analysis platform, the test specimens were simulated by FLPH model established in this paper. The results shown that the hysteretic curves obtained by simulation are well with the experimental curves, indicated that the numerical simulation method for SRC frame column based on FLPH model can be well applied in SRC structures.
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