Research on Internal Force Adjustment Method for Frames of High-Rise RC Frame-Shear Wall Structures under Long-Period Ground Motions

Abstract

In this study, the collaborative performance of reinforced concrete (RC) frame-shear wall structures under ordinary ground motions (OGMs), far-field long-period ground motions (FLGMs), and near-field long-period ground motions (NLGMs) is systematically analyzed using the OpenSees finite element simulation software. By comparing the structural response differences among the three types of ground motions at various peak ground acceleration (PGA) levels, the processes of internal force redistribution and damage evolution are analyzed, and the effect of long-period ground motions on the collaborative interaction within RC frame-shear wall structures is preliminarily revealed. Finally, a frame shear adjustment method that incorporates seismic spectral characteristics is proposed. This method more accurately characterizes the internal force distribution under long-period ground motions, providing a basis for improving the reliability of seismic design.