Bridge and Structural Polyurethane Disk Bearings
A bridge bearing is a component of a bridge which typically provides a resting surface between bridge piers and the bridge deck. The purpose of a bearing is to allow controlled movement and thereby reduce the stresses involved. Movement could be thermal expansion or contraction, or movement from other sources such as seismic activity. There are several different types of bridge bearings which are used depending on a number of different factors including the bridge span. The oldest use of disc bearings dates back from simple plates, to pot bearings and rocker bearings.
Universal Urethane Products has designed and created urethane disc bearings able to withstand the most difficult physical properties. Currently used in over 15 states, our spherical disk bearings provide the same load capacity and movement as Pot Bearings provide with even a lower profile. The polyurethane elastomeric disc in the bearing accommodates very high vertical design loads, at the same time maintaining its ability to provide rotation in both longitudinal and traverse directions. The size and geometry of the disc is designed as per the specific requirements of the projects. Unlike pot bearings, our disk bearings don’t rely on rubber seals to retain the elastomer, therefore offering the potential for greater service life. Not only does our disk bearings offer longevity but, they are better performing in rotation and lower cost. Bridge builders all over the world are switching over to urethane disc bearings.
UUP has been certified in “ Hardness to Physical Properties” (AASHTO 188.8.131.52-1). Also, meets specification requirements of “AASHTO LRFD Bridge Construction”(Section 184.108.40.206 & Table 220.127.116.11-1).