Curved bridge pc precast beam pedestal and wedge block adjusting device and construction method thereof

By employing a wedge-shaped block adjustment device with ball joint bolts and spherical supports in the precast PC beams of curved bridges, combined with a composite structure of concrete and steel pedestals, the problems of low parameter adjustment accuracy and frequent formwork replacement in precast PC beams of curved bridges have been solved. This has enabled the versatility of the pedestals and the convenience of construction, while avoiding stress concentration at the beam ends.

CN117507127BActive Publication Date: 2026-04-24CHINA MCC22 GROUP CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA MCC22 GROUP CORP LTD
Filing Date
2023-11-08
Publication Date
2026-04-24

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Abstract

The present application relates to a kind of curved bridge PC precast beam pedestal and its wedge block adjusting device and construction method, pedestal includes concrete fixed pedestal, its both ends are provided with steel pedestal, steel pedestal includes beam length adjusting block, mobile pedestal, mobile pedestal end close to beam length adjusting block is provided with reserved notch, wedge block adjusting device is installed in this reserved notch, lower seat plate of wedge block adjusting device is fixed on the ground between two longitudinal tracks, the upper edge of apron is connected with the panel of mobile pedestal and beam length adjusting block, the lower surface of the panel of mobile pedestal and the panel of beam length adjusting block is attached to the upper side of the stop mortar pad plate outside apron, the ball hinge bolt is installed in the four corner positions of the upper seat plate and the lower seat plate of the wedge block adjusting device, and spherical support is provided in the center;The method is according to the steel pedestal part of beam length adjustment, after the wedge block adjusting device part is tightly blocked, concrete is poured;Before tensioning, lower lifting pedestal, avoid beam end splitting.
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Citation Information

Patent Citations

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    CN206428593U

  • Bridge precast beam plate bottom supporting structure

    CN111119030A

  • Curve bridge PC precast beam pedestal and wedge block adjusting device thereof

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