CN202338051U

CN202338051U - Internal-mold type reinforced concrete ribbed-beam composite floor

Info

Publication number: CN202338051U
Application number: CN2011204662101U
Authority: CN
Inventors: 李文忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-22
Filing date: 2011-11-22
Publication date: 2012-07-18
Anticipated expiration: 2021-11-22

Abstract

The utility model discloses an internal-mold type reinforced concrete ribbed-beam composite floor. The composite floor comprises prestressed ribbed-beam members (1), filling light-weight bodies (2) and common concrete bodies (3), wherein the prestressed ribbed-beam members (1) are prefabricated from high-strength steel bars and high-strength concrete; the filling light-weight bodies (2) are positioned between the prestressed ribbed-beam members (1); and the common concrete bodies (3) are used for casting the prestressed ribbed-beam members (1) and the filling light-weight bodies (2) into a whole body. The filling light-weight bodies (2) can adopt slag hollow bricks or gypsum hollow bricks. The internal-mold type reinforced concrete ribbed-beam composite floor disclosed by the utility model has the beneficial effects that the action of the high-strength steel bars and the high-strength concrete can be fully performed, a mold plate does not need to be cast in situ, a construction site for building the floor has no special requirement for the construction environment, so that the construction efficiency of the site can be improved; in addition, the performances of a product produced by the high-strength steel bars, steel stranded wires and spiral carbon rods are all very stable, and the price of the product is low; and the production process of a product produced by ultrahigh-strength C60, C70 and C80 concrete has been very normal, and further enhances the application of the ultrahigh-strength steel bars.

Description

The reinforced concrete ribbed beam composite floor of a kind of internal schema

Technical field:

The utility model relates to the building structure technology field, is specially the reinforced concrete ribbed beam composite floor of a kind of internal schema.

Technical background:

In the composite floor of the reinforced concrete ribbed plate of internal schema is used; Mainly be to use the lightweight thing to do filling; And then alleviate the weight of whole floor; Gypsum evacuated mould and reinforced concrete ribbed plate composite floor are a kind of floor slab structures that extensive use is arranged in construction work; Generally speaking, the ordinary concrete floor slab structure from great, that the concrete consumption is many, amount of reinforcement is high, form work engineering is complicated, pipeline is installed spans inconvenient, that be suitable for is little: though and common steel bar concrete dense rib floor is in light weight, the concrete consumption is few, bearing capacity is high, amount of reinforcement is economized, form work engineering is complicated; Sound insulation, heat insulation, fire-resistant, antidetonation, energy-efficient performance are poor, influence building quality and function of use.We can see that the application of the reinforced concrete ribbed plate composite floor of internal schema structure does not have great help to efficiency of construction simultaneously.Such as Chinese patent 2008203008289 disclosed a kind of scientific structures, the construction reinforced concrete ribbed plate composite floor of novel floor slab structure internal schema structure simple, with low cost; It comprises basic interior form unit and steel bar concrete dense rib floor structure; The inside of steel bar concrete dense rib floor structure 2 fill basic in form unit, basic in form unit be that opening surface butt joint by two gypsum evacuated moulds (at Chinese patent: ZL 200620133755.X is open) combines.Form unit 1 is to be combined by two opening surface butt joints of filling mould (open at Chinese patent: ZL 200620201032.9) in basic.Form unit 1 is to be combined by a gypsum evacuated mould and an opening surface butt joint of filling mould in basic.The side of form unit 1 and end face are filled the reinforced concrete floor structure in basic.Relief width 60-100mm in basic between the form unit.Compared with prior art, utility model adopts reinforcing bar and the concrete material consumption that is lower than the ordinary concrete floor slab structure, constructs the ribbed slab floor structure that mechanical property is superior to the ordinary concrete floor slab structure greatly; Can alleviate dead load about 10%; It is about 20% to save concrete, saves steel using amount 30-50%: can shorten the construction period, reduce construction formwork and cut out and decrease: can reduce the building floor height; Reduce the use energy consumption of building: smooth at the bottom of the plate; Being convenient to pipeline installs: because the combination ribbed slab floor rigidity of structure is big, bearing capacity is high, is applicable to the large span floor of 6-12 rice, can be used for more large span if apply prestressing force.In addition; Because gypsum evacuated mould is stayed in the floor, has not only improved the rigidity and the bearing capacity of floor, and has improved the sound insulation of floor, heat insulation, fire-resistant, vibrationproof performance greatly; Remedy the deficiency of ordinary reinforced concrete ribbed slab floor, thereby promoted the using character of building.But but owing to also need template to install, so do not solve the problem of efficiency of construction, cost does not significantly reduce yet.

The utility model content:

The technical problem that the utility model will solve provides a kind of new composite floor structure; Particularly be to use the precast prestressed close girt strip of high tensile reinforcement and high-strength concrete and then make up the reinforced concrete ribbed beam composite floor of a kind of internal schema; When realizing the basic function of the existing reinforced concrete ribbed plate composite floor of internal schema; Do not need template to install, and can increase work efficiency, can expand high tensile reinforcement and the high-strength concrete range of application in building field.

For solving the problems of the technologies described above, the technical scheme that the utility model provides is:

The reinforced concrete ribbed beam composite floor of a kind of internal schema comprises because high tensile reinforcement and the close girt strip member of the prefabricated prestressing force that forms of high-strength concrete (1) and the ordinary concrete body (3) that is installed on the light filling body (2) between the close girt strip member of prestressing force (1) and the close girt strip member of prestressing force (1) and light filling body (2) built one.

Above-mentioned light filling body (2) can be slag hollow brick or gypsum hollow brick.

Concrete ultimate tensile strength is very low, has only 0.0001～0.0015, at this moment reinforcement stresses 20～30N/mm only ², it is also not obvious to improve concrete intensity in addition, and the ordinary concrete crack resistance is very poor; For allowing cracking member, crack width generally should be limited in 0.2～0.3mm, and at this moment tensile reinforcement stress is the highest also can only reach 150～250N/mm ²To sum up analyze and to know; Materials with High Strength can not get abundant application.

High-strength concrete is as a kind of new constructional materials, and the superiority so that its compressive strength is high, non-deformability is strong, density is big, porosity is low is widely used in high building structure, long-span bridge girder construction and some unique construction.The maximum characteristics of high-strength concrete are that compressive strength is high, are generally concrete 4～6 times of regular tenacity, thus can reduce the cross section of member, so optimum is used for highrise building.Test shows, under certain ratio of axial compressive force to axial compressive ultimate capacity of section and suitable stirrup ratio situation, the high-strength concrete frame column has better anti.And column cross-section size reduces, and alleviates deadweight, avoids short column, and is also favourable to structural seismic, and improved economic benefit.The high-strength concrete material is that prestressing technique provides advantage, can adopt high strength steel and artificial proof stress, thereby has improved the bending rigidity and the crack resistance of flexural member widely.Therefore adopt more and more in the world wide and apply prestressed High Strength Concrete Structures, be applied in large span house and the bridge.In addition, utilize the big characteristics of high-strength concrete density, can be used as and build the building withstand shocks with explosive load, like the atomic reactor basis etc.Utilize the strong and strong characteristics of corrosion resistance of high-strength concrete anti-permeability performance, construction has the high impervious and high rotten industrial pond that requires etc. that resists.Though have these advantages, its instructions for use is relatively harsher, in the application of a large amount of building floors, receives very big restriction.

The good effect of the utility model just is; Use high tensile reinforcement and the precast prestressed close girt strip of high-strength cement; And then water build floor with ordinary concrete, give full play of the effect of high tensile reinforcement and high-strength concrete like this, simultaneously since prefabricated close girt strip accomplish in factory; So the job site making up floor does not have special requirement to construction environment, and very little in light weight can artificially installation of prefabricated close girt strip volume.The double template of doing cast-in-place ordinary concrete when hollow brick is installed.Can improve on-the-spot efficiency of construction like this.The production properties of product of high tensile reinforcement, steel strand and spiral carbon-point are all highly stable, cheap in addition.The product producing process of ultra high strength concrete C60, C70, C80 concrete is very regular, more promotes the application of super-high strength steel muscle.The utility model adopts reinforcing bar and the concrete material consumption that is lower than the ordinary concrete floor slab structure; Construct the ribbed slab floor structure that mechanical property is superior to the ordinary concrete floor slab structure greatly, it is about 10% to alleviate dead load, saves concrete about 20%; Save steel using amount 50-90%: can shorten the construction period greatly; Without construction formwork, reduce the use energy consumption of building: smooth at the bottom of the plate, be convenient to the installation of pipeline and ceiling light; Because the combination ribbed slab floor rigidity of structure is big, bearing capacity is high, is applicable to the large span floor of 6-9 rice.In addition; Because gypsum evacuated mould is stayed in the floor, has not only improved the rigidity and the bearing capacity of floor, and has improved the sound insulation of floor, heat insulation, fire-resistant, vibrationproof performance greatly; Remedy the deficiency of ordinary reinforced concrete ribbed slab floor, thereby promoted the using character of building.

Description of drawings:

Fig. 1, the reinforced concrete ribbed beam composite floor of the utility model internal schema structural representation.

The specific embodiment:

The reinforced concrete ribbed beam composite floor of the internal schema of meaning as shown in Figure 1; Comprise because high tensile reinforcement and the close girt strip member 1 of the prefabricated prestressing force that forms of high-strength concrete and the light filling body hollow brick between the close girt strip member 1 of prestressing force, installed the double simultaneously ordinary concrete body 3 of doing the template 2 of cast-in-place ordinary concrete and close girt strip member 1 of prestressing force and light filling body 2 being built one.Above-mentioned light filling body 2 is the slag hollow brick.

The specific embodiment has only provided a kind of example; Based on equal conversion, like the selection of high tensile reinforcement and strong concrete, and the specification of the close girt strip member of prestressing force; And the selection of obturator variation, all in the protection domain of the utility model.

Claims

1. reinforced concrete ribbed beam composite floor of internal schema is characterized in that: it comprises because high tensile reinforcement and the close girt strip member of the prefabricated prestressing force that forms of high-strength concrete (1) and the ordinary concrete body (3) that is installed on the light filling body (2) between the close girt strip member of prestressing force (1) and the close girt strip member of prestressing force (1) and light filling body (2) built one.

2. the reinforced concrete ribbed beam composite floor of internal schema according to claim 1 is characterized in that: light filling body (2) is the slag hollow brick.

3. the reinforced concrete ribbed beam composite floor of internal schema according to claim 1 is characterized in that: light filling body (2) is the gypsum hollow brick.