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Uplift Bearings

Sat, 20 Nov 2010 11:15:34 -0500

The uplift bearing can be designed to provide the vertical restraint required for your application.

Spherical Bearings

Sat, 20 Nov 2010 10:50:47 -0500

RJW Spherical Bearings are used to accommodate thermal, seismic and mechanical expansion and contraction and also provide multidirectional rotation for highway bridges, railway bridges and other civil engineering structures.

Spherical Bearings Data Sheet

POD Bridge Bearings

Sat, 20 Nov 2010 10:50:42 -0500

The POD bearing utilizes the proven reliable design technology used by the Disktron Bearing System. The POD bearing design incorporates tighter tolerance design parameters to handle the higher braking and traction loads seen in high speed rail applications.

Disktron Bearings

Sat, 20 Nov 2010 10:48:04 -0500

The Disktron Bearing is a highload multirotational compact disk bearing which accommodates design loads of 10 to 10,000 kips while providing rotational capabilities in both longitudinal and transverse directions. Thousands of RJ Watson bearings have been tested and installed worldwide.

The Disktron Bearing is composed of four fundamental components; the load plates, the upper and lower bearing plates, the shear resisting mechanism (SRM) and a Polytron elastomeric disc. The Polytron disc material is a polyurethane blend conforming to AASHTO Specifications and tested at MCEER. The Disktron Bearing is a low profile alternative to the pot bearing and it generally has a longer service life.

Disktron Specifications

Disktron Design Questionnaire

EradiQuake (EQS) Sliding Isolation Bearings

Sat, 20 Nov 2010 10:41:54 -0500

EQS

Hoover Dam Bypass Bridge

RJ Watson Seismic Isolation Bridge Bearings are a state of the art seismic isolation disc bearing system designed to minimize forces and displacements experienced by structures during an earthquake and are known as the EradiQuake System (EQS). The EQS transfers the energy of a moving mass (kinetic energy), such as a bridge deck during an earthquake, into heat and spring (potential energy). This is done through the MER which connects the superstructure to the substructure.

The EQS can be adjusted at the direction of the design engineer to achieve a wide variety of energy dissipation levels. This is because the EQS is designed to dissipate energy through friction.

By adjusting the friction levels the amount of damping can be controlled. This extraordinary feature gives the engineer the ability to optimize the structural design. Unlike an elastomeric isolation bearing, the lateral effective stiffness of an EQS bearing can be varied in different directions to optimize the response of a structure.