Dynamic deflection of concrete plate in semi-rigid supports and various damping condition

Tarumanagara International Conference on the Applications of Technology and Engineering

工业技术（总论）

Liucius, Yenny Untari^1 ; Alisjahbana, Sofia W.^2

Civil Engineering Department, Faculty of Engineering, Universitas Tarumanagara, Jakarta, Indonesia^1

Faculty of Engineering and Informatics, Bakrie University, Jakarta, Indonesia^2

关键词: Constant velocities;    Critical velocities;    Dynamic behaviours;    Dynamic deflections;    Forced vibration;    Simply supported;    Support conditions;    Transcendental equations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/508/1/012017/pdf
DOI  :  10.1088/1757-899X/508/1/012017

学科分类：工业工程学

来源: IOP

【 摘 要 】

There are numerous researches about the dynamic behaviour of concrete plate. Most of them are done with the assumptions of simply supported supports along its edge. This study will calculate the dynamic deflection of isotropic concrete plate in semi-rigid support condition along the edges. The damping ratio will be varied to analyse how much it affects the dynamic deflection. The free vibration solution will be done with Modified Bolotin Method to solve the transcendental equations. The load subjected to plate, as the forced vibration, is the dynamic moving load considered as vehicle's load on the road, moving along the mid-side of the plate with constant velocity. The result shows that damping ratio can reduce the dynamic deflection up to 48% at lower velocity (around 20-50 km/h); up to 30% at mid velocity (around 60-180 km/h); and up to 8% at upper velocity (around 190-200 km/h). Critical velocity is also analysed in this study. The critical velocity of this system is on 112 km/h which will conduct the maximum dynamic deflection on the plate. This result can be used as a basic for designing the plate efficiently yet safety for the users.