Vertical movement horizontal limiting support seat

Abstract

The invention relates to a vertical movement horizontal limiting support seat. When technical measures of an ordinary support seat are adopted, the requirement that horizontal relative displacement between steel rail support points of two sides of adjacent beam ends of a ballastless track bridge which is laid is smaller than or equal to 1mm is impossible to be met. The vertical movement horizontal limiting support seat comprises an upper support seat steel plate and a lower support seat steel plate. A section of the upper support seat steel plate is shaped like a Greek letter 'pi'. A section of the lower support seat steel plate is reverse-T-shaped. The width of a protrusion portion on the top surface of the lower support seat steel plate is equal to the perpendicular distance between two protrusion portions at the bottom of the upper support seat steel plate. The protrusion portion on the top surface of the lower support seat steel plate is clamped between the two protrusion portions at the bottom of the upper support seat steel plate. Teflon plates are adhered on contact surfaces between the upper support seat steel plate and the lower support seat steel plate. The vertical movement horizontal limiting support seat not only satisfies requirements of vertical deformation of a bridge, but also is well applicable to requirements of laying ballastless tracks on a high-speed railway under the condition that vertical stress of a beam structure is not changed.

Description

Technical field [0001] The present invention belongs to the field of bridge support technology, which involves a horizontal limitation of vertical activity. Background technique [0002] Recently, my country's high -speed railway has developed rapidly. In order to meet the needs of high -speed driving and reduce the maintenance and maintenance of the lane bed, the no -orbital rail technology has been applied to high -speed railways. The nearly harsh requirements put forward by the transformation of the bridge structure- "Playing the horizontal and relative displacement of the rail support point on both sides of the neighboring beam end of the neighboring beam at the end of the bridge of the bridge should not be greater than 1mm." New technical solutions are urgently needed to be resolved. Invention content [0003] The purpose of the present invention is to provide a vertical limits of vertical activity that meets the vertical relative displacement requirements of the bridge wit...

AI Technical Summary

Problems solved by technology

[0002] Recently, my country's high-speed railways have developed rapidly. In order to meet the needs of high-speed traffic and reduce the maintenance and repair work of ballast beds, ballastless track technology has been widely used in high-speed railways. However, the application of ballastless tracks has also brought new issues, especially for The almost stringent requirement put forward by the deformation of the bridge structure - "the lateral relative displacement of the rail support points on both sides of the adjacent beam end of the bridge laying ballastless track should not exceed 1 mm", if the technical measures of conventional supports are used, it cannot meet the requirements at all , urgently need new technical solutions to solve

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