Shear connecting part, mounting structure and construction method of UHPC waffle slab combined beam bridge

Abstract

The invention discloses a shear connecting part of a UHPC waffle slab combined beam bridge. The shear connecting part comprises a transverse tenon type standard part unit and a longitudinal tenon typestandard part unit, wherein the transverse tenon type standard part unit is composed of a plurality of transverse tenon type standard parts which are arranged at intervals, each transverse tenon typestandard part comprises a lower tenon joint slab body and an upper tenon joint slab body, and each upper tenon joint slab body is provided with an upper tenon joint hole; the longitudinal tenon typestandard part unit is composed of a plurality of longitudinal tenon type standard parts which are arranged at intervals, each longitudinal tenon type standard part comprises a lower tenon joint slab body and an upper tenon joint slab body, and each lower tenon joint slab body is provided with a lower tenon joint hole; and each lower tenon joint hole is inserted with the upper tenon joint hole in the corresponding transverse tenon type standard part, and the crossed connection positions between the transverse tenon type standard parts and the longitudinal tenon type standard parts are welded and fixed. According to the shear connecting part, the mounting structure and the construction method of the UHPC waffle slab combined beam bridge, materials are fully utilized, assembly construction isfacilitated, the defect that the shear rigidity of a flexible shear connecting part such as a stud is small is overcome, and the shear bearing capacity and the shear rigidity of the connecting part are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a shear connector suitable for an assembled UHPC waffle plate composite girder bridge, an installation structure and a construction method thereof. Background technique [0002] Bridge rapid construction (Accelerated Bridge Construction, ABC) originated in the United States, mainly through the factory prefabrication of components, the use of special transportation equipment to transport components to the site and install them, to achieve a technology that speeds up the construction of bridges on site. Steel-concrete composite beams have excellent mechanical properties that the upper concrete slab is under compression and the lower steel girder is under tension, and it is easy to realize the assembly of steel beams and precast concrete slabs. It was first considered by engineers and used in rapid bridge construction. Among them, the prefabricated UHPC (Ultra-high Perfor...

AI Technical Summary

Problems solved by technology

Studies have shown that the vertical and lateral slippage of flexible shear groove connectors such as traditional group nails is relatively large, and the tensile stress at the lower part of the UHPC longitudinal rib is relatively large

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