Studying the effect of differential settlement on the bending moment of beams of the Educational building no. 4 of Phu Xuan inter-level high school

Abstract

Differential settlement between columns will affect the internal force of the superstructure. Due to the difficulty of theoretical research, studies in this field are mainly carried out on practical buildings. This paper continues to use a completed construction, assign the limit differential settlement to each column, and study the rate of change of beam moments. This value is considered not only at the most dangerous cross section but at all cross sections of the beam. The simulation results show that the moment variation ratio is greatly influenced by the initial moment value, so the initial minimum reinforcement ratio designated by the designer has an important role. In addition, special attention should be paid to strengthening the flexural resistance of the ground beams because the rate of change of their moments is great under differential settlement.

Keywords: Differential settlement; internal force; bending moment; structure; theoretical study.