Comparative Analysis of the Work of Bridge Spherical Bearing at Different Antifriction Layer Locations

Abstract

The novel results reported here present qualitative and quantitative regularities of the deformation behavior of a spherical bearing with a different location and inclination angle of the antifriction layer. A number of topical problems encountered during the assessment of the performance bearings are considered in the work. The spherical bearings of the bridge span are investigated. Structures are load-bearing elements of transport systems. They perceive thermal power loads from the bridge span. The temperature problem is not considered in this study. In this paper, a comparative analysis of the bridge spherical bearing operation at different antifriction layer locations was performed. Two bearing geometries are considered: the interlayer is pressed in a spherical segment (classical geometry); the interlayer is pressed into a recess located in the lower steel plate. The six modern antifriction materials considered proved suitable to some extent as contact unit sliding layers for various purposes. Additionally, the influence of the inclination angle of the antifriction layer end face on the structure operation for all sliding layer material variants was analyzed. It has been established that the bearing design with an interlayer in the lower steel plate has a more favorable deformation behavior. Changing of the inclination angle of the antifriction layer end face leads to a decrease in the maximum level of contact parameters and deformation characteristics for all the considered structures.

Research on the Mechanical Properties and Temperature Compensation of an Intelligent Pot Bearing for a Pipe-Type Welding Strain Gauge

“…The penalty function method and the Lagrange multiplier method are used in this analysis. The mixed-use extended Lagrange method is less sensitive to contact stiffness and relatively easy to converge [ 19 , 20 , 21 ]. The contact stiffness FKN is taken as 0.8, and the contact intrusion tolerance coefficient is assumed to be 0.1.…”

Influence Analysis of Lubricant Recesses on the Working Capacity of the Bridge Span Spherical Bearing

“…The minimum deformation of the interlayer at an h p = 8 mm thickness was established. The interlayer geometric arrangement in the spherical bearing of bridge structures plays an important role in the contact parameter distribution and the deformation behavior of the sliding layer [51]. The relevant task is to analyze the geometric parameters of structural elements, such as bearings.…”

The Geometric Configuration of Lubricant Recesses of the Polymer Sliding Layer of the Bearing

“…Maintenance and monitoring of the condition of the structure and its load-bearing elements are performed to increase the bridge life resource [4,5]. Also, one of the options for increasing the bearing capacity and bridge service life can be the selection of rational geometry and/or location of its important elements, including the rational geometry of the sliding layer [6], location of the bearing plate of a CEP pile [7], and rational geometry of lubricant recesses [8].…”

“…The bearing elements of a bridge support external loads. One of the variants of such structures is bridge bearings [6,8]. Due to the constant increase in the rate of urbanization, it is necessary to constantly improve the performance of bridge bearings by changing their geometric configuration [9][10][11][12][13][14].…”