Creep effects on elastomeric and ball rubber bearings under sustained lateral loads

Date

2022-01-01

Author

Natale, Andrea
Del Vecchio, Ciro
Di Ludovico, Marco
Caner, Alp
Naghshineh, Ali Karimzadeh
Jacak, Mary

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

192
views

0
downloads

Base isolation applications are becoming popular in the seismic design of resilient structures and infrastructures. Even though the response of the bearings is widely studied under cyclic displacements, limited information is available for bearing response under sustained lateral loads. These types of loads can develop sustained lateral displacement in the bearing. During the holding time under sustained lateral displacement, the creep or stress relaxation may significantly change the properties of the bearings and may affect the response in the reloading stage. This research paper aims at assessing the influence of short-term lateral creep on the hysteretic response of rubber bearings, and ball rubber bearings. To this end, experimental testing on different elastomeric bearings under imposed lateral displacement is performed. For each device, the lateral response is measured, and the advantages and disadvantages are discussed in terms of strength, stiffness, energy dissipation and equivalent damping. The loss of load under sustained lateral displacement is experimentally assessed and the effects of creep in the design procedure of a base isolated system are discussed.

Subject Keywords

Bridges, earthquakes, limit states, service loads, thermal effects, support bearings, degradation, STRESS-RELAXATION, DEGRADATION, PREDICTION

URI

https://hdl.handle.net/11511/95999

Journal

STRUCTURE AND INFRASTRUCTURE ENGINEERING

DOI

https://doi.org/10.1080/15732479.2022.2033280

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Energy based seismic assessment and design Alıcı, Fırat Soner; Sucuoğlu, Haluk; Erberik, Murat Altuğ; Department of Civil Engineering (2019) The need to improve the reliability of current earthquake resistant design procedures has promoted energy-based concepts that employ seismic input energy and energy dissipation capacity of structures as the main design tools. Energy based approaches provide effective tools at both design and assessment stages for a comprehensive interpretation of the seismic behavior of structural systems during an earthquake excitation. Energy based assessment and design procedure includes two crucial aspects. The first on...
Seismic Response Analysis and Optimum Design Of A Concave Ball Support İsolated System for A Three Story Concrete Structure Kaplan, Halit; Dölen, Melik (2003-10-10) This paper investigates the seismic response and optimum design of a base isolation system for earthquake protection of structures. The system incorporates spherical supports for the base, a specially designed spring-cam system to keep the base rigidly supported under normal conditions and to allow it to move for the duration of the earthquake under the constraint of a spring with optimized stiffness characteristics. A single degree of freedom structure was considered to investigate the feasibility of the c...
Numerical Simulation of three Base Isolation Systems for Earthquake Protection of Structures Dölen, Melik (null; 2003-10-10) In a previous paper [1&2] a base isolation system was proposed for earthquake protection of structures. The system incorporates spherical supports for the base, a specially designed spring-cam system to keep the base rigidly supported under normal conditions and to allow it to move for the duration of the earthquake under the constraint of a spring with optimized stiffness characteristics. A high-rise structure was considered to investigate the feasibility of the concept. The simulation of the system respon...
Derivation of site-specific UHS based on simulated ground motions and its parametric effects on building fragility Azari Sisi, Aida; Askan Gündoğan, Ayşegül; Department of Civil Engineering (2016) Estimation of seismic demands is essential for the purpose of structural seismic design and analyses. It is significant to obtain reliable ground motion amplitudes to estimate seismic damage on structures in a realistic manner. The ground motion simulation methodologies provide a physical approach to estimate seismic demands in the regions with sparse recording data and scarce networks. This dissertation consists of two main parts: In the first part, site-specific uniform hazard spectrum (UHS) of Erzincan r...
Seismic design of lifeline bridge using hybrid seismic isolation Dicleli, Murat (American Society of Civil Engineers (ASCE), 2002-03-01) This paper presents the merits of a hybrid seismic isolation system used for the seismic design of a major bridge. The bridge is analyzed for two different arrangements of seismic isolation systems. The first arrangement consists of friction pendulum bearings at all substructure locations; the other incorporates a hybrid system where laminated elastomeric bearings are used at the abutments and friction pendulum bearings at the piers. Analysis results have demonstrated that the hybrid seismic isolation syste...

Citation Formats

A. Natale, C. Del Vecchio, M. Di Ludovico, A. Caner, A. K. Naghshineh, and M. Jacak, “Creep effects on elastomeric and ball rubber bearings under sustained lateral loads,” STRUCTURE AND INFRASTRUCTURE ENGINEERING, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/95999.