CN211229116U

CN211229116U - Thin-wall UHPC and NC laminated plate with perforated plate PBL key

Info

Publication number: CN211229116U
Application number: CN201921643344.9U
Authority: CN
Inventors: 苏家战; 陈宝春; 吴文天
Original assignee: Fuzhou University
Current assignee: Fuzhou University
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-08-11
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a thin wall UHPC and NC superimposed sheet of band opening board PBL key, including UHPC thin wall layer and NC layer, pour as an organic wholely through pre-buried trompil board PBL key between the inside on UHPC thin wall layer and NC layer. The thin-wall UHPC and NC laminated slab with the perforated plate PBL key is simple in structure, the perforated plate PBL key can effectively improve the bonding performance of the UHPC thin-wall layer and an NC layer interface, the shear rigidity of the laminated slab is improved, the cooperative stress is formed, the design is reasonable, and the construction is convenient.

Description

Thin-wall UHPC and NC laminated plate with perforated plate PBL key

Technical Field

The utility model relates to a thin wall UHPC and NC superimposed sheet of band opening board PBL key.

Background

The Ultra High Performance Concrete (UHPC) is a Concrete material with Ultra High strength, High compactness and High durability, and is expensive to manufacture, and is often combined with a steel structure or common Concrete (NC) to form a combined or laminated structure based on functional requirements, for example, a UHPC and NC laminated slab, a UHPC thin slab can be prefabricated to serve as a dismantling-free template of cast-in-place NC, and is stressed together with an NC layer, so that the use effect of the UHPC is fully exerted. However, since the prefabricated UHPC layer is thin, fracture failure is easily caused by insufficient rigidity during transportation and hoisting, and interfacial adhesion and shear properties between the prefabricated UHPC layer and the NC layer are particularly outstanding.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a thin-walled UHPC and NC superimposed sheet with a PBL key of a perforated sheet.

In order to solve the technical problem, the technical scheme of the utility model is that: a thin-wall UHPC and NC laminated slab with a hole opening plate PBL key comprises a UHPC thin-wall layer and an NC layer, wherein the UHPC thin-wall layer and the NC layer are cast into a whole through the pre-embedded hole opening plate PBL key.

Preferably, the perforated plate PBL key comprises a plurality of longitudinal perforated plates which are transversely and uniformly distributed and a plurality of transverse perforated plates which are longitudinally and uniformly distributed, and the longitudinal perforated plates and the transverse perforated plates are mutually perpendicular and crosswise welded into a whole.

Preferably, one part of the PBL key of the perforated plate is embedded into the UHPC thin-wall layer, and the other part of the PBL key of the perforated plate is embedded into the NC layer.

Preferably, a plurality of longitudinal reinforcing steel bars which are uniformly distributed transversely and transverse reinforcing steel bars which are uniformly distributed longitudinally penetrate through the hole holes of the PBL keys of the perforated plate embedded into the NC layer.

Compared with the prior art, the utility model discloses following beneficial effect has: the UHPC thin-wall layer and the NC layer are combined through the perforated plate PBL key, the rigidity of the prefabricated UHPC thin-wall layer can be enhanced, the interface bonding performance of the UHPC thin-wall layer and the NC layer is improved, the shearing stress of a joint surface between the UHPC thin-wall layer and the NC layer is effectively transferred, the deformation capacity of the laminated slab is improved, the design is reasonable, the construction is convenient, the perforated plate PBL can be widely applied to bridges and building structures, and can be used as a permanent template for cast-in-place reinforced concrete, the construction efficiency is improved, and the service life.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in figure 1, the thin-wall UHPC and NC laminated slab with the perforated plate PBL key comprises a UHPC thin-wall layer 1 and an NC layer 2, wherein the UHPC thin-wall layer and the NC layer are cast into a whole through the pre-embedded perforated plate PBL key 3.

The embodiment of the utility model provides an in, trompil board PBL key includes the horizontal trompil board 5 of the vertical trompil board 4, the vertical equipartition of a plurality of pieces of horizontal equipartition, a plurality of vertical trompil boards and a plurality of horizontal trompil board mutually perpendicular cross welding as an organic whole.

In the embodiment of the present invention, a part of the PBL key of the perforated plate is embedded into the thin-walled UHPC layer, and another part is embedded into the NC layer.

In the embodiment of the utility model, a plurality of horizontal equipartition vertical reinforcing bars 6, horizontal reinforcing bars 7 of vertical equipartition are worn to be equipped with on 8 on the trompil hole of pre-buried trompil board PBL key into the NC layer.

A construction method of a thin-wall UHPC and NC laminated slab with a perforated plate PBL key is carried out according to the following steps: (1) manufacturing a PBL key of the perforated plate according to actual field conditions and process requirements, wherein the size and the distance of the perforated holes need to be consistent; (2) arranging a plurality of longitudinal perforated plates and a plurality of transverse perforated plates in a mutually vertical way, and firmly welding; (3) placing the welded PBL key of the perforated plate into the UHPC thin-wall layer, pouring the UHPC thin-wall layer, exposing the PBL key of the perforated plate out of the surface of the UHPC thin-wall layer, and reinforcing the rigidity of the prefabricated UHPC thin-wall layer during hoisting; (4) maintaining the UHPC thin-wall layer; (5) adopting a reinforcing bar to penetrate into the hole for binding connection; (6) after the UHPC thin-wall layer is installed in place, a template of a cast-in-place NC layer is manufactured and poured into a whole with the NC layer, the construction and the manufacture of the laminated slab are completed, the thickness of the UHPC thin-wall layer can be reduced, the shearing stress of a joint surface between the UHPC and the NC can be effectively transferred, and the deformation capacity of the laminated slab is improved.

The present invention is not limited to the above preferred embodiment, and any one can obtain thin-walled UHPC and NC laminated plate with PBL keys of perforated plate in various forms. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims

1. The utility model provides a thin wall UHPC and NC superimposed sheet of area trompil board PBL key which characterized in that: the UHPC thin-wall layer and the NC layer are poured into a whole through a pre-embedded perforated plate PBL key.

2. The thin walled UHPC and NC laminated sheet with perforated sheet PBL key as claimed in claim 1 wherein: the perforated plate PBL key comprises a plurality of longitudinal perforated plates which are transversely and uniformly distributed and a plurality of transverse perforated plates which are longitudinally and uniformly distributed, and the longitudinal perforated plates and the transverse perforated plates are mutually perpendicular and crosswise welded into a whole.

3. The thin walled UHPC and NC laminated sheet with perforated sheet PBL key as claimed in claim 1 wherein: one part of the PBL key of the perforated plate is embedded into the UHPC thin-wall layer, and the other part of the PBL key of the perforated plate is embedded into the NC layer.

4. The thin walled UHPC and NC laminated sheet with perforated sheet PBL key as claimed in claim 3 wherein: and a plurality of longitudinal reinforcing steel bars which are uniformly distributed transversely and transverse reinforcing steel bars which are uniformly distributed longitudinally penetrate through the hole holes of the PBL key of the perforated plate embedded into the NC layer.