Dynamic Increase Factor for Progressive Collapse with Non-Linear Statics Analysis

Abstract

This research project studies dynamic increase factor to analysis progressive collapse nonlinear statics method. The study of planar frames along with samples starting of progressive collapse analysis was employed by removing of 3 types: outside column, internal columns at 1 continuous and internal columns at 2 continuous for reinforced concrete structures at two to seven story with 3-meter floor height to 5-meter bay width, using a beam cross section of 25x65 cm and a column cross section of 25x25 cm. The study will analyze nonlinear statics comparable to nonlinear dynamics. For each case. In the nonlinear dynamic analysis, a method of lumped mass for dynamic analysis was applied and a plastic hinge at each end of the beam members was employed. From the study, Dynamic increase Factor for Progressive Collapse Analysis of Planar Frames 108 samples, it was found that analysis structure nonlinear static structures, the factors that affect the dynamic increase factor are the ratio of bending moments, number of layers, and type of structure. Which decreasing the bending moment ratio results in an increase in the Dynamic Increase Factor. An Increasing the number of layers will also result in an increase in the Dynamic Increase Factor. Under the same conditions, the structural characteristics had no significant effect on Dynamic Increase Factor, respectively. The experimental data sets were used to generate mathematical equations for Dynamic Increase Factor of Progressive Collapse by equation have error of 0.0-8.8 percent. the equation used for analysis is given in the form of an exponential function.