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2 Journal of Theoretical and Applied Mechanics

2 2021

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Study on the mechanical properties of a type of spherical bearing

Yang Yingfang, Zhang Yan, Ju Jinsan

Journal of Theoretical and Applied Mechanics

2021

Vol. 59 nr 4

539--550

The spherical bearing is widely used in highways, bridges and long-span structures. In order to study mechanical properties of a large-scale spherical bearing, a full-scale finite element model of the spherical bearing was established by using ABAQUS software, and the mechanical properties of the spherical bearing under four working conditions were simulated respectively when the upper bearing plate had different inclination angles. The ultimate bearing capacity of the spherical bearing under vertical tension was analyzed emphatically. The research results show that, in practical applications, the change in bearing capacity caused by the inclination angle of the upper bearing plate should be considered, and the wedge-shaped part should be strengthened.

Numerical study on the dynamic response of a concrete filled steel tubular long column under axial impact by a rigid-body

Qi Han, Chen Shuohui, Zou Jianlei, Zhang Huidi, Liu Mengsha, Ju Jinsan, Sang Xiuxing

Journal of Theoretical and Applied Mechanics

2021

Vol. 59 nr 4

551--563

In this study, refined finite element models of concrete filled steel tubular long columns with length diameter ratio (L/D) of 50 were established, and their dynamic responses under a rigid-body impact were explored. It is found that the form of impact load is only related to and can be predicted from the impact velocity of the rigid-body. The change of axial stress and strain with time is synchronous with that of the impact load. Furthermore, the variation characteristics of axial stress and strain with time are mainly related to the initial velocity of the rigid-body.