Results 261 to 270 of about 156,957 (301)

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
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An equivalent linear model of lead-rubber seismic isolation bearings

Engineering Structures, 1996
An equivalent linear model for the seismic analysis of base-isolated bridges with lead-rubber bearings (LRB) is established in this paper using an identification method. Recognizing that the inelastic displacement spectra with constant ductility ratios of an earthquake ground motion can be approximated by the equivalent elastic spectra with appropriate
J.S. Hwang, J.M. Chiou
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Optimum lead–rubber isolation bearings for near-fault motions

Engineering Structures, 2007
Abstract Analytical seismic response of multi-storey buildings isolated by lead–rubber bearings (LRB) is investigated under near-fault motions. The superstructure is idealized as a linear shear type flexible building. The force–deformation behaviour of the LRB is modelled as bilinear with viscous damping.
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Seismic Design of Bridges on Lead‐Rubber Bearings

Journal of Structural Engineering, 1989
This paper reports on a parametric study of the response of bridge superstructures supported on lead‐rubber bearings when subjected to the 1940 El Centro earthquake (N‐S component) and the 1966 Parkfield earthquake. The effect of parameters such as lead‐plug size and aspect ratio, bearing thickness and yield strength, pier, abutment, and superstructure
D. H. Turkington, A. J. Carr, N. Cooke, P. J. Moss   +3 more
  +4 more sources

Behaviour of lead-rubber bearings

Structural Engineering and Mechanics, 1998
Experimental work undertaken to investigate the behaviour of lead-rubber bearings under compression and a combination of compression and shear or rotation has been reported on elsewhere. However, it is difficult to determine the state of stress within the bearings in terms of the applied forces and the interaction between the lead plug and the steel ...
Atsushi Mori, P.J. Moss, A.J. Carr, N. Cooke   +3 more
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Design Method for Bridges on Lead‐Rubber Bearings

Journal of Structural Engineering, 1989
This paper presents a design method based on a parametric study by Turkington (1987) of the response of bridge superstructures supported on lead-rubber bearings and subjected to the 1940 El Centro (N-S component) and Parkfield earthquakes. The study showed trends of both period shift and additional damping brought about by the inelastic behavior of the
D. H. Turkington, A. J. Carr, N. Cooke, P. J. Moss   +3 more
openaire   +1 more source

Nonlinear Model-Based System Identification of Lead–Rubber Bearings

Journal of Structural Engineering, 2008
A nonlinear model-based system identification method is proposed, formulated, implemented, and applied to a three-span continuous base-isolated bridge. Transverse and rotational rigid-body motions of the bridge superstructure are formulated into two degrees-of-freedom dynamic governing equations.
Il-Sang Ahn, Stuart S. Chen
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System identification of a bridge with lead–rubber bearings

Computers & Structures, 2000
Abstract This study develops an identification algorithm to investigate the dynamic properties of a base-isolated highway bridge equipped with lead–rubber bearings. A linear model is used for the substructure while a bilinear hysteretic model is chosen for the bearing system.
R.Y. Tan, M.C. Huang
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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
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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
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