Results 241 to 250 of about 53,132 (295)

The Study of the Design Parameter of Lead Rubber Bearing

Applied Mechanics and Materials, 2012
The Lead-Rubber-Bearing is a type of isolation device in entirety. Its design parameter is complicated. when it is used in bridges, it always need plenty of time to design. It is not beneficial to its application and dissemination. The design formula now available are lack of relevance，can not provide a clear and distinct computation measure.
Jie Wang, Jian Xin Liu
openaire   +1 more source

Design of lead-rubber-bearing isolation systems using a grasshopper optimisation algorithm

Proceedings of the Institution of Civil Engineers - Forensic Engineering, 2023
Seismic isolation is an efficient method for improving the seismic behaviour of building structures. Sensitivity analysis of the behaviour of the base-isolated structures is essential to investigate the effects of various mechanical and environmental ...
S. Mollaei, E. N. Farsangi, M. Babaei, F. Mehri, Fakhraddin Ghahramani   +4 more
semanticscholar   +1 more source

Principles of scaling and similarity for testing of lead–rubber bearings

Earthquake Engineering & Structural Dynamics, 2010
AbstractLead–rubber bearings are seismic isolators that have been extensively used to protect buildings, bridges and mission‐critical infrastructure from the damaging effects of earthquake shaking. Testing of isolators, including lead–rubber bearings, is conducted either for research purposes (for example, shake table testing) or for determination of ...
Ioannis V. Kalpakidis, Michael C. Constantinou   +1 more
openaire   +1 more source

Experimental and numerical investigations on hysteretic response of a multi-level SMA/lead rubber bearing seismic isolation system

Smart materials and structures (Print), 2022
This study investigates the response of a shape memory alloy (SMA)-based isolation system that combines multiple groups of SMA cables and a lead rubber bearing (LRB).
Sasa Cao, O. Ozbulut, F. Shi, J. Deng
semanticscholar   +1 more source

SEISMIC LOAD REDUCTION ON THE BRIDGE OVER LIQUEFACTION VULNERABILITY ZONE BY LEAD RUBBER BEARING

Proceedings of the 7th International Conference in Sustainable Built Environment, 2023
The Palu IV bridge collapsed after the 2018 Palu earthquake. Bridge failure is caused by moment force and buckling increasing simultaneously while liquefaction occurs.
A. Zakariya, A. Rifa’i, S. Ismanti
semanticscholar   +1 more source

Application of Lead Rubber Bearing in Curved Continuous Bridge

Advanced Materials Research, 2011
Based on the general FEA program, the bidirectional nonlinear behavior of lead rubber bearing is taken into account by using two orthogonal nonlinear spring elements. Considering the effect of radius of curvature, lead diameter and dissimilar seismic motions, dimensional FEA model of seismically isolated curved continuous bridge is established. And the
Zheng Liu, Tao Wang
openaire   +1 more source

A mechanical tension-resistant device for lead rubber bearings

Engineering Structures, 2017
Abstract Tensile stresses in laminated rubber bearings can create expandable cavities and cause damage to spread inside the rubber, which may lead to inestimable impact on the mechanical performance of the isolators. Thus, laminated rubber isolation systems are mainly used in multistoried buildings in which compression state is maintained at the ...
Kai Hu, Ying Zhou, Li Jiang, Peng Chen, Ge Qu   +4 more
openaire   +1 more source

Stability of Elastomeric and Lead-Rubber Seismic Isolation Bearings

Journal of Structural Engineering, 2012
Elastomeric and lead-rubber bearings are two commonly used types of seismic isolation devices. During seismic events, some of the bearings in an isolation system will be subjected to large axial compressive loads, caused by gravity plus overturning forces, accompanied by simultaneous large lateral displacements.
Jared Weisman, Gordon P. Warn
openaire   +1 more source

Development of a design procedure for bridges on lead-rubber bearings

Engineering Structures, 1989
Abstract This paper presents a design method that is based on a parametric study of the response of bridge superstructures supported on lead-rubber bearings and subjected to El Centro 1940 N/S component and the 1966 Parkfield earthquakes. The effect of parameters such as lead plug sizes and aspect ratio, bearing thickness and yield strength, pier ...
D.H. Turkington, N. Cooke, P.J. Moss, A.J. Carr   +3 more
openaire   +1 more source

Sensitivity of seismic fragility of base‐isolated bridges to lead rubber bearing modeling technique

Structural Control & Health Monitoring, 2022
Seismic isolation has been demonstrated to be one of the most effective methods developed to protect bridges during earthquakes. One of the significant challenges in examining their effectiveness is how to model them numerically.
V. Aghaeidoost, A. M. Billah
semanticscholar   +1 more source