Experimental and numerical investigation of the expansion
The research findings of this paper can provide insights for addressing the design, operation, and maintenance issues of beam-end expansion devices in large-span bridge projects,
For the longest spans, suspension bridges are unparalleled. However, bridges expand and contract more than pavement slabs or buildings and have their own special types of expansion devices. This practice results in more ...
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The research findings of this paper can provide insights for addressing the design, operation, and maintenance issues of beam-end expansion devices in large-span bridge projects,
A bridge girder is a large, horizontal structural member that serves as a primary support for the bridge deck—the surface that carries traffic. Essentially a very large beam, a girder is designed to span
Modular joints are available with box or strip seal systems and include mechanical control devices to ensure equal spacing and reliable performance during both service conditions and post-seismic events.
These devices (i.e., rail expansion regulators and beam-end expansion devices) mitigate beam–track interaction, facilitate coordinated longitudinal deformation, and reduce loads on rails and
SUPER-SPAN and SUPER-PLATE offer long span structure designs of up to 50 feet. Thrust beams and reinforcing ribs are added to achieve larger sizes.
Results obtained for the case of BRBs connecting spans to each other showed that the BRBs connected to abutments required the largest strength along the bridge, and that when the number of spans was
The initial installations of expansion devices shall be performed by the Contractor in the presence of a representative of the manufacturer. This representative shall be experienced in such installations and
For bridges with more than one span, the actuating devices have usually been placed at both the abutment and the pier diaphragms. However, coordination of separate mechanical systems
The superstructure is the part of the bridge that stabilizes and supports the slab and transfers the traffic load to the bridge substructures. There are numerous types of superstructures; however, the most
HDSS and HP LOK restrained joint pipe are well suited for bridge applications. The deflection capabilities of these joints adapt easily to curves, radii and crowns of today''s bridges and move with
The longer spans have much less resistance to horizontal temperature movement caused by bearing friction and pier rigidity. These types of structures are designed for joint movements of 4 inches or
Supporting girders rest on elastomeric bearings within an L-type abutment. Longer semi-integral bridges generally have reinforced concrete approach slabs at their ends. Approach slab anchors, in