Large-displacement railroad bridge end expansion device
A telescopic device and large displacement technology, used in bridges, bridge parts, bridge construction, etc., can solve problems such as inability to meet use requirements, weak structural bearing capacity, and inability to meet less maintenance requirements, and meet the requirements of train running. Roughness, the effect of increasing the vertical and lateral bending stiffness
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[0070] The present invention proposes a large-displacement railway bridge beam end expansion device, including: concrete sleepers arranged on adjacent first and second bridges; fixed steel sleepers, respectively arranged on the beam ends of the two bridges. There are a first fixed steel sleeper and a second fixed steel sleeper; support beams. Above the concrete sleepers and the fixed steel sleepers, four support beams are arranged along the length of the rail. One end of the support beam is a fixed end and the other end is The movable end, the fixed end is fixedly connected to the first concrete sleeper and the first fixed steel sleeper provided on the first bridge, and the movable end is connected to the second concrete sleeper and the second concrete sleeper provided on the second bridge. There is a movable connection between the fixed steel sleepers; at least one movable steel sleeper is arranged between the first bridge and the second bridge, and is connected to the bottom o...
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