Connected bamboo-UHPC combined bridge deck slab structure adopting grid type bamboo plate

Abstract

The invention belongs to the technical field of structural engineering and relates to a connected bamboo-UHPC combined bridge deck slab structure adopting a grid type bamboo plate. The structure is composed of a top layer UHPC (1), a bottom layer bamboo bridge deck (2) and the grid type bamboo plate (3). The structure is characterized in that: recombined bamboos are selected to be prefabricated into the grooved bridge deck, and the grooved bridge deck is arranged at the layer of the structure; UHPC (1) is cast in place in the groove of the grooved bridge deck to serve as the upper layer of thecombined bridge deck; the grid type bamboo plate (3) is manufactured and arranged between the top layer UHPC (1) and the bottom layer bamboo bridge deck (2); the grid type bamboo plate (3) serves asa connecting piece to be inserted into the reserved groove of the bottom layer bamboo bridge deck (2), and the groove is filled with an epoxy resin filler (4). According to the structure of the invention, two light materials of the combined bridge deck slab are connected through the grid type bamboo plate (3), therefore, the weight of the whole combined bridge deck slab is reduced, the bonding strength of a combined structure interface is improved, the defect of insufficient flexural rigidity of bamboo is overcome, cooperative work of the two materials of the combined bridge deck slab is facilitated, and the excellent characteristics of the two materials are brought into full play.

Description

technical field [0001] The invention belongs to the technical field of structural engineering, and in particular relates to a composite bridge deck structure using grid-shaped bamboo boards to connect bamboo-UHPC (Ultra-High Performance Concrete). Background technique [0002] Bridge decks and pavement structures are platforms that directly provide vehicles for traffic, and they directly bear the load of vehicles. Therefore, their working conditions directly affect the comfort of driving and the durability of the main body of the bridge structure. [0003] Concrete bridge decks are commonly used at present, which can work well with asphalt bridge deck pavement or cement bridge deck pavement, but due to the large bulk density of concrete, the spanning capacity of the bridge is limited. Therefore, it has become a research hotspot to seek a composite bridge deck with small bulk density and good performance. Bamboo has good tensile properties, and the tensile strength of better...

AI Technical Summary

Problems solved by technology

[0003] Concrete bridge decks are commonly used at present, which can work well with asphalt bridge deck pavement or cement bridge deck pavement, but due to the large bulk density of concrete, the spanning capacity of the bridge is limited

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