CN203361200U

CN203361200U - Steel fiber reinforced concrete manhole cover

Info

Publication number: CN203361200U
Application number: CN2013203347240U
Authority: CN
Inventors: 沈和军
Original assignee: ZHOUSHAN PUTUO HENGBAO NEW BUILDING MATERIALS Co Ltd
Current assignee: ZHOUSHAN PUTUO HENGBAO NEW BUILDING MATERIALS Co Ltd
Priority date: 2013-06-09
Filing date: 2013-06-09
Publication date: 2013-12-25
Anticipated expiration: 2023-06-09

Abstract

The utility model provides a steel fiber reinforced concrete manhole cover. The steel fiber reinforced concrete manhole cover is formed by a steel reinforcement framework and steel fiber reinforced concrete in a cooperation and pouring mode, the steel fiber reinforced concrete manhole cover is divided into a surface layer and a bottom layer in the height direction, the surface layer (21) is a terrazzo surface layer, the bottom layer is a steel fiber reinforced concrete bottom layer (23), the thickness of the surface layer is 10-20mm, and the steel reinforcement framework (22) is configured in the bottom layer. According to the steel fiber reinforced concrete manhole cover, the terrazzo surface layer is arranged on the upper surface in a separated mode. Compared with the prior art, the surface or the shape of the portion, exposed on the ground, of the surface of the steel fiber reinforced concrete manhole cover can be processed through later processing such as grinding after the steel fiber reinforced concrete manhole cover is installed. Meanwhile, the steel fiber reinforced concrete manhole cover is low in recycle value, and can prevent the phenomenon that due to the fact that a manhole cover is stolen, accidents happen.

Description

Fabric reinforcement concrete manhole cover

Technical field

The utility model relates to a kind of fabric reinforcement concrete manhole cover.

Background technology

Fabric reinforcement concrete manhole cover, normally the steel fibrous concrete embedding forms with cage of reinforcement, and steel fibrous concrete adds steel fibre with concrete and forms, the alternative castiron well cover of this manhole cover.Usually, the well lid periphery is surrounded by strengthen stirrup.With the fabric reinforcement concrete manhole cover of manufactured by common concrete, its intensity is still not enough carries oversize vehicle for large specification check well lid and rolls, and therefore proposes more high-intensity fabric reinforcement concrete manhole cover and has obtained generally and pay attention to.There is in Chinese invention patent ZL02138206.9 " preparation method of chemical pre-stressed steel fiber reinforced concrete manhole cover " and introduces " the Portland cement that is 42.5 grades with the strength grade of UEA cement expansive material equivalent substitution 15%, be mixed with the chemical pre-stressed steel fiber reinforced concrete that the steel fibre volume ratio is 1.5%, the steel fibrous concrete prepared is put into to steel coaming plate and through vibration moulding, natural curing demoulding after a day, be positioned over the finished product stockyard, water every day 2 times, maintenance is dispatched from the factory in 28 days ", or " with the alunite expansive cement of 42.5 grades, all replace the Portland cement that strength grade is 42.5 grades, mix the steel fibre of 1.5% volume ratio simultaneously, be mixed with chemical pre-stressed steel fiber reinforced concrete, by the requirement of B level, the well lid cage of reinforcement is set simultaneously, then put into green concrete, through vibration moulding, natural curing demoulding after a day ", the gained manhole cover can improve crack load 30% left and right, rupture load 3% left and right.But the fabric reinforcement concrete manhole cover one of this structure is surface can not carry out the grinding processing, the 2nd, the concrete cohesiveness is good not, and therefore this fabric reinforcement concrete manhole cover not only can not be done surface and modifies, and is easily collided with and local cracked.

Summary of the invention

For above-mentioned deficiency, the utility model is exactly that a kind of fabric reinforcement concrete manhole cover that improves its surface finish will be provided.

The fabric reinforcement concrete manhole cover that the utility model provides, be equipped with cage of reinforcement steel fibrous concrete moulding by casting, in height be divided into surface layer and bottom, wherein surface layer is terrazzo facing, bottom is the steel fibrous concrete bottom, wherein surface layer is thick is 10-20mm, and cage of reinforcement fits in bottom.

The fabric reinforcement concrete manhole cover that the utility model provides, analyze a terrazzo facing at upper surface.Compared with prior art, its part surface that is exposed to ground after installing can obtain surface or processing in shape by post-production such as grindings.Simultaneously, the utility model well lid recovery value is low, can prevent from being caused security incident because stealing.

The fabric reinforcement concrete manhole cover that the utility model provides, the well seat that it is supporting, in height be divided into surface layer and bottom, described surface layer is terrazzo facing, bottom is the steel fibrous concrete bottom, and wherein surface layer is thick is 10-20mm, and cage of reinforcement fits in bottom.

The accompanying drawing explanation

The structure chart that Fig. 1 is an embodiment in the utility model, in figure: 1-well seat, 11-surface layer, 12-cage of reinforcement, 13-bottom, 2-well lid, 21-surface layer, 22-cage of reinforcement, 23-bottom;

The structure chart that Fig. 2 is another embodiment in the utility model.

The specific embodiment

Embodiment mono-, one catch-basin well seat and well lid, be the E600 grade, well head diameter 600mm, and its structure is as shown in Figure 1.Well lid 2 has terrazzo facing 21 and steel fibrous concrete bottom 23, the thick 15mm of surface layer, and total thickness 130mm, arrangement of reinforcement diameter 14mm, intersect in length and breadth and be fixed as well word cage of reinforcement 22 by the 80mm interval.Well seat 1 also has terrazzo facing 11 and steel fibrous concrete bottom 13, the thick 15mm of surface layer, height overall 130mm, arrangement of reinforcement: main muscle diameter 10mm has three annulus, by upper two L-shaped cross section annulus once, arrange, the upper and lower twice in the outside, inboard is together lower, and secondary muscle diameter 8mm forms cage of reinforcement 12 by the radiation wire ferrule on three road rings.

Embodiment bis-,

As above routine, wherein the structure of well lid 3 as shown in Figure 2, is protruded a step, stepped diameters 595mm, high 30mm downwards in bottom 33 bottom surfaces.Cage of reinforcement 32 arrangements of reinforcement increase one deck under upper routine arrangement of reinforcement again, are diameter 10mm, by the 100mm interval, intersect in length and breadth fixing.Lower floor is end reinforced upwards to be curved afterwards and the top reinforcement welding.During cast, mould is just being put and first bottom is being vibrated solidly, then it is solid floating that surface layer 31 is vibrated.The structure of the surface layer 11 of well seat 1, bottom 13 and cage of reinforcement 12 is example as above.

Claims

1. a fabric reinforcement concrete manhole cover, be equipped with cage of reinforcement steel fibrous concrete moulding by casting, it is characterized in that in height being divided into surface layer and bottom, wherein surface layer is terrazzo facing, bottom is the steel fibrous concrete bottom, wherein surface layer is thick is 10-20mm, and cage of reinforcement fits in bottom.

2. fabric reinforcement concrete manhole cover as claimed in claim 1, it is characterized in that the supporting well seat of well lid in height is divided into surface layer and bottom, described surface layer is terrazzo facing, and bottom is the steel fibrous concrete bottom, wherein surface layer is thick is 10-20mm, and cage of reinforcement fits in bottom.