Multi-layer low-altitude anti-sideslip supporting cushion box and using method thereof

Abstract

The invention discloses a multi-layer low-altitude anti-sideslip supporting cushion box and a using method thereof, wherein the multi-layer low-altitude anti-sideslip supporting cushion box comprises a plurality of supporting cushion box bodies which are stacked, and every two adjacent supporting cushion boxes are detachably connected. According to the multi-layer stacked supporting cushion box, the supporting height of the cushion box can be increased according to needs, the problem that the closure period of a cast-in-place steel arch bridge conflicts with the construction period of a ballastless track bed of a simply-supported box girder bridge deck is solved through a temporary span box girder erected by the multi-layer low-altitude anti-sideslip supporting cushion box in advance, and the later-stage tensioning operation of the end of the cast-in-place steel arch bridge is not affected; a beam body can be jacked (descended) directionally in a limited working space by increasing (decreasing) the number of layers of the low-altitude anti-sideslip cushion box, working is facilitated, the self weight of the cushion box is reduced through the supporting cushion box of the cavity structure, and construction operation in the limited field space is facilitated; and meanwhile, a top beam oil jack needs to be matched for carrying out quantitative jacking (descending) cross switching operation, so that the temporary-span box girder descends to the designed elevation.

Description

technical field [0001] The invention belongs to the technical field of spanning box girder erection equipment, and relates to a multi-layer low-altitude anti-sideslip support pad box and a use method thereof. Background technique [0002] The 100th span box girder of a super-large bridge is located at the adjacent span of the cast-in-place continuous steel arch. Due to the six-month construction period conflict between the continuous steel arch bridge closing construction plan and the simply supported box girder ballastless track bed construction plan, the continuous steel arch bridge has not been completed. Before the completion, the box girder near the span must be erected to meet the construction of ballastless ballast bed on the simply supported box girder deck; but the normal erection of the box girder near the span will affect the prestressed tension construction at the end of the continuous steel arch bridge. Contents of the invention [0003] The technical problem ...

AI Technical Summary

Problems solved by technology

[0002] The 100th span box girder of a super-large bridge is located at the adjacent span of the cast-in-place continuous steel arch. Due to the six-month construction period conflict between the continuous steel arch bridge closing construction plan and the simply supported box girder ballastless track bed construction plan, the continuous steel arch bridge has not been completed. Before completion, the box girder near the span must be erected to meet the construction of ballastless bed on the simply supported box girder deck; but the normal erection of the box girder near the span will affect the prestressed tension construction at the end of the continuous steel arch bridge

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