Free vibration analysis of a set of reinforced concrete silos with tubular foundations
Yaoqing Gong1 Yejun Li1 Lumin Wang2 Qikeng Xu2 Jun Chuai2
1. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000; 2. School of Civil Engineering & Architecture, Henan University of Technology, Zhengzhou 450007
Abstract：The computational model of a set of reinforced concrete silos with tubular foundations is built, simplified into a combination of vertical generalized Timoshenko beams with n segments. The deflection of the neutral surface and the cross-sectional rotation around the neutral axis of each segment of the beam are chosen as basic unknown functions. By applying an energy principle, the motion equations for the free vibration problem of a set of reinforced concrete silos with tubular foundations are then translated into a group of ordinary differential equations composed by the unknown functions, which can be solved by an ordinary differential equation (ODE) solver. Thereupon, the natural frequencies and mode shapes of the set of reinforced concrete silos are obtained. The comparison between the numerical solutions and the results of the corresponding tests demonstrates the efficiency and precision of the analysis. Thusly, a new computational method for the analysis of dynamic performances of a set of reinforced concrete silos with tubular foundations is provided.
龚耀清;李烨君;王录民;许启铿;揣君. 筒承式钢筋混凝土立筒群仓的自由振动分析[J]. , 2014, 33(7): 1-3.
Yaoqing Gong Yejun Li Lumin Wang Qikeng Xu Jun Chuai. Free vibration analysis of a set of reinforced concrete silos with tubular foundations. , 2014, 33(7): 1-3.
2014, Vol. 33 
