Abstract
The local series system with typical common plate rubber support/pier in highway reinforced concrete girder bridge is the object of the current research. The finite element numerical simulation method is used to study sensitive parameters – the mechanical properties of the series system under the horizontal load. The simulated results show that the interface bonding strength between the bearing and adjacent structure is reduced; the equivalent shear deformation and the horizontal force of bearing under horizontal load change insignificantly with the increase of horizontal displacement. However, the total shear deformation and equivalent shear deformation increase with the increase of the axial compression ratio. In addition, the top horizontal force and displacement of the pier significantly decrease with reduction of the connection strength at both ends of the bearing. Therefore, adjusting the axial compression ratio of the pier and interfacial connection mode can obviously affect the mechanical properties of the support and adjacent structure, even the failure mode of the local structure. This approach can help estimate the mechanical properties of the existing bridge and determine the reasonable maintenance plan.
Highlights
The ordinary plate rubber bearing, as a typical form of support in highway reinforced concrete (RC) medium and small span girder bridges in China, mainly supports the superstructure and transmits the load on the span to the substructure, while ensuring free deformation at the ends of the bridge structure under action of load, temperature, humidity, concrete shrinkage, and horizontal and rotational displacements
The results show that the friction parameter is reduced with the increase of vertical pressure on the support, and the interface friction slip can decrease the effective shear deformation of rubber bearing
In order to analyse the impact of these factors on the performance of the superstructure and substructure in the series system, the finite-element numerical simulation method is used to form the fine numerical model of the series system with common plate rubber bearing, interface friction contact situation and RC bridge pier
Summary
The ordinary plate rubber bearing, as a typical form of support in highway reinforced concrete (RC) medium and small span girder bridges in China, mainly supports the superstructure and transmits the load on the span to the substructure, while ensuring free deformation at the ends of the bridge structure under action of load, temperature, humidity, concrete shrinkage, and horizontal and rotational displacements. In the above mechanic equations, the interface friction slip performance of the support and the damage behaviour of the column are not considered It is not consistent with the connection construction characteristics of the medium and small span girder bridge with common plate rubber bearing. The mechanic equations of the series system with isolation supports and columns are deduced, and the relevant sensitive parameters are proposed, such as geometrical configuration of the ordinary plate rubber bearing, axial compressive ratio of the column and interface connection condition between the support and the adjacent structural members. In order to analyse the impact of these factors on the performance of the superstructure and substructure in the series system, the finite-element numerical simulation method is used to form the fine numerical model of the series system with common plate rubber bearing, interface friction contact situation and RC bridge pier
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
