Experimental research of service actions influence on elastomeric bearings elastic properties

Shuvalov, Aleksandr; Сафина, Л А; Kovalev, Mikhail

doi:10.1088/1757-899x/869/5/052018

Cited by 1 publication

(1 citation statement)

References 4 publications

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“…At present, the research on the seismic performance of bridges under the influence of ambient temperature has been mainly focused on the changes in the seismic response of bridges due to changes in the performance of bridge bearings under the influence of temperature at home and abroad. Scholars at home and abroad have conducted many useful studies on parameters such as equivalent stiffness [9][10][11], yield force [12][13][14], compressive strength [15,16], frictional slip properties [17,18], and damping characteristics [19] of plate rubber bearings at different ambient temperatures, and systematically explored the correlation between each of these parameters and the ambient temperature. A bridge structure with plate rubber bearings is exposed to the external environment for a long time, and the ambient temperature will inevitably lead to changes in the mechanical behavior of the bearings, resulting in a change in the dynamic characteristics of the bridge structure.…”

Section: Introductionmentioning

confidence: 99%

Seismic Response of a PC Continuous Box Girder Bridge under Extreme Ambient Temperature

Wang,

Yu,

et al. 2023

Sustainability

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To study the effect of temperature on the seismic performance of a prestressed reinforced concrete (PC) continuous girder bridge with laminated rubber bearings (LRBs), a two-linked continuous bridge was used as the background to consider the effect of extreme temperature on the properties of LRBs and pier concrete. First, the properties of concrete specimens were tested at different temperatures to obtain their mechanical parameters at extreme temperatures. Then, we obtained the effect of extreme temperature on the seismic response of consecutive bridges with LRBs by examining the seismic response of the pier moments, pier top displacements, and bearing deformations. The results show that compared with normal temperatures, the extreme temperature causes a change in parameters of the LRBs and concrete pier, which increases the internal force and displacement response of a pier under an extremely low temperature by 37.13% and 32.74%, respectively. The displacement of bearings under extremely high temperature conditions increases by 16.31%. The influence of temperature changes on the mechanical parameters of LRBs will change the connection stiffness of the pier and superstructure, resulting in significant changes in the seismic response of the pier and bearing, so that the internal force and displacement response of the pier are negatively correlated with the temperature.

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