So sánh ứng xử khung thép có liên kết nửa cứng phi tuyến theo mô hình Richard – Abbott và mô hình Lui – Chen chịu tải trọng động

Abstract

This article presents two semi - rigid connection models commonly used in behavior analysis of semi - rigid connection steel frames subjected to dynamic loads that is the Richard - Abbott model and the Lui - Chen model. Compare the moment and rotation relationship curves of the same connection according to the Richard - Abbott model and the Lui - Chen model. Propose an algorithm to update the stiffness connection to calculate nonlinear semi - rigid connection steel frames. The proposed algorithm is also verified by comparing the results of calculating the semi-rigid linear steel frame using the ASSF calculation program in Mathlab, which created by the authors, with SAP 2000 software. Provide an example of calculation of a nonlinear semi - rigid connected steel frame subjected to dynamic loads and compare the calculation results between the Richard - Abbott model and the Lui - Chen model and give comments and recommendations.