The invention discloses a novel RC column concentrated
plastic hinge model research method based on lateral rigidity, and relates to the technical field of structural
seismic resistance. The method aims at solving the problem that the
simulation precision of an existing concentrated
plastic hinge model is affected by the value of a multiplier n, and the multiplier n does not need to be defined by establishing the function relation between the spring rotation rigidity and the component lateral rigidity; the method comprises the specific steps of deducing a unit
stiffness matrix of the
cantilever column concentrated
plastic hinge series model, establishing a function relationship between rotational stiffness and
lateral stiffness, designing a state updating
algorithm based on displacement loading control, verifying the accuracy of a new model, and comparing the accuracy of the new model with the accuracy of an existing model. Experimental results show that the
model simulation precision is remarkably improved, the nonlinear behavior of the RC column can be accurately simulated without a multiplier n, and the method has important practical significance; the method is successfully applied to anti-
seismic analysis of a plurality of typical RC frame structures, the calculation process is simplified, the calculation efficiency is improved, a more reliable and convenient tool is provided for structural anti-seismic design, and the popularization value is high.