Mobile temporary prestress tension anchor block

Abstract

The invention relates to a mobile temporary prestress tension anchor block. A concrete anchor block is adopted for conventional segmented precast assembled bridge temporary prestress tension, can not be used repeatedly, and is large in weight and unfavorable for stress of a segmented precast assembled beam. The mobile temporary prestress tension anchor block is provided with a base plate which is fixed on a precast segmented box beam through embedded fixed parts. Two opposite anchor plates are vertically welded on the upper surface of the base plate. Two rib plates perpendicular to the anchor plates are welded between the anchor plates. The anchor plates are provided with anchor plate through holes for enabling prestress thick reinforcing steel bars to penetrate through. The prestress thick reinforcing steel bars are arranged in the four anchor plates of two anchor blocks on the two adjacent precast segmented box beams in a penetrating mode. The ends of the prestress thick reinforcing steel bars are fixed on the anchor plates at the far ends of the two adjacent anchor blocks through prestress thick reinforcing steel bar binding anchorage devices. The mobile temporary prestress tension anchor block is simple in structure, large in rigidity, low in cost, convenient to construct, and capable of being disassembled, assembled, moved, and utilized repeatedly, and has good universality.

Description

technical field [0001] The invention belongs to the technical field of road traffic construction, and in particular relates to a mobile temporary prestressed tension anchor block. Background technique [0002] The construction method of the glue joint segmental prefabricated assembled bridge is to divide the beam body into several segmental units along the longitudinal direction of the bridge for factory production, and then transport them to the bridge site segment by segment, and build them on the mobile bracket bridge building machine or the mobile hanging basket. For assembly, the joints between the segments are sealed with epoxy resin, and the epoxy resin sealant is squeezed between the segments by tensioning temporary prestressing, and then the prefabricated segments are connected into a whole by tensioning permanent prestressing. Remove the temporary tension and prestress, complete the construction of a segment or a hole beam, and so on, until the construction of the...

AI Technical Summary

Problems solved by technology

[0003] At present, the temporary prestressed tension of conventional segmental prefabricated assembled bridges uses concrete anchor blocks, which cannot be moved and reused for many times.

In the concrete anchor block, it is necessary to bury anchors, spiral reinforcement and reserve channels. The construction sequence is complicated, the utilization rate of equipment is low, the economy is not high, the bridge is not easy to dismantle after forming, the aesthetics is poor, and it is not conducive to environmental protection.

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