UHPC and NC laminated plate of which reinforcement form is triangular space truss

Abstract

The invention discloses a UHPC and NC laminated plate of which the reinforcement form is a triangular space truss and a construction method of the UHPC and NC laminated plate. A laminated plate component comprises a prefabricated UHPC layer, a cast-in-situ NC layer and a triangular space reinforcement truss; after the triangular space reinforcement truss is bound and welded, a UHPC bottom layer iscast in a prefabricated site, and the triangular space reinforcement truss is exposed out of the surface of the UHPC layer and used for improving the rigidity when a prefabricated UHPC baseboard is hoisted; after a prefabricated slab is installed in place, the upper-layer NC layer is cast in situ. The triangular space reinforcement truss can also effectively improve the interface bonding performance of the UHPC layer and the NC layer, so that the UHPC layer and the NC layer form an effective entirety to jointly work. According to the UHPC and NC laminated plate, the UHPC plate which is high in tensile strength and good in ductility serves as a tensile bottom layer, and also serves as a bottom die of an upper-layer concrete cast-in-situ slab. The UHPC and NC laminated plate has the advantages of being excellent in structural stress performance, low in bridge floor weight, high in cost performance, convenient to construct and the like.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a UHPC and NC laminated plate whose reinforcing form is a triangular space grid. Background technique [0002] Due to the low tensile strength of ordinary concrete (NC) slabs, in order to ensure the safety and application of the bridge deck, the thickness of the bridge deck is usually relatively large, which brings problems such as excessive self-weight of the structure. Even so, the NC bridge deck will still crack under tension. Given that ultra-high performance concrete (UHPC) is a new type of cement-based composite material mixed with steel fibers, it has high tensile strength but high cost of use. Therefore, it is reasonable to apply UHPC to the tension area of ​​the bridge deck. However, ordinary UHPC-NC laminated bridge decks face the problems of poor bonding performance at the lamination interface and inconvenient hoisting, which are technical problems that need ...

AI Technical Summary

Problems solved by technology

However, ordinary UHPC-NC laminated bridge decks face the problems of poor bonding performance at the laminated interface and inconvenient hoisting, which is a technical problem that needs to be solved

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