Hoisting structure of UHPC short rib precast slab

Abstract

The invention discloses a hoisting structure of a UHPC short rib precast slab, which comprises a UHPC short rib precast slab, a plurality of internal thread hoisting connecting devices are symmetrically embedded in the upper plane of the UHPC short rib precast slab with the central axis as the symmetry axis, and a rigid hanging bracket is arranged on the upper plane of the UHPC short rib precast slab and tightly attached to the UHPC short rib precast slab. The rigid hanging bracket is connected with the UHPC short rib precast slab into a whole after being connected with the internal thread hoisting connecting device through the connecting rod, and hoisting equipment hooks the rigid hanging bracket to hoist the UHPC short rib precast slab. According to the hoisting structure of the UHPC short rib precast slab, the cross arm, the screw rod and the internal thread hoisting connecting device pre-buried in the UHPC short rib precast slab are closely connected between the rigid hanging bracket and the UHPC short rib precast slab, and the rigid hanging bracket and the UHPC short rib precast slab are connected into a whole, so that the rigidity of the UHPC short rib precast slab is enhanced; and the phenomena of difficult demolding, cracking of the bottom of the prefabricated slab and the like caused by too large deformation of the UHPC short rib prefabricated slab in the hoisting process are avoided.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to a UHPC low-rib prefabricated board hoisting structure. Background technique [0002] UHPC low-rib bridge deck is a new type of bridge deck in recent years. It is suitable for steel-UHPC composite structure bridges. Effectively reduce the self-weight of the bridge deck and avoid the risk of cracking commonly faced by ordinary concrete bridge decks. [0003] The UHPC low-rib bridge deck is composed of panels and longitudinal ribs (or transverse ribs). The panels are thin (no more than 10cm) and require high manufacturing precision; The stiffness in the long side direction is small and the deformation is large. Due to the above-mentioned characteristics of the UHPC low-rib bridge deck, the precast slab is hoisted from the formwork and during the hoisting process, there is a large deformation in the long side direction. If the lifting is not synchronized or the precast slab is dist...

AI Technical Summary

Problems solved by technology

Due to the above-mentioned characteristics of the UHPC low-rib bridge deck, the precast slab is hoisted from the formwork and during the hoisting process, there is a large deformation in the long side direction. If the lifting is not synchronized or the precast slab is disturbed and deformed during the lifting process, the slab ribs will squeeze the inner membrane. , resulting in difficulty in demoulding, damage to prefabricated panels and molds

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