CN2531000Y

CN2531000Y - On situ pouring reinforced concrete bidirectional hollow building cover

Info

Publication number: CN2531000Y
Application number: CN 01257268
Authority: CN
Inventors: 冯毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-02
Filing date: 2001-11-02
Publication date: 2003-01-15
Anticipated expiration: 2011-11-02

Abstract

A cast-in-place reinforced concrete bidirectional hollow floor comprises steel bars, concrete, and pre-embedded components for bidirectional ready holes preset in the steel bar; the utility model is characterized in that the pre-embedded components for bidirectional ready holes arranged on the same surface are in orthogonal or oblique crossings and are fixed through locators; the pre-embedded components for bidirectional ready holes can be the enclosed hard cavity tube which is water insoluble or enclosed hard cavity box or solid body made of light materials which is provided with a hydrophobic powder layer, whose cross section can be circular, rectangular, trapezoidal or in other irregular shapes; the utility model has advantages of practicality, good spatial mechanic performance, convenient construction and low production cost, which is especially applicable to the multi-storied, high-rise buildings and large span structure cast-in-place floor.

Description

The two-way hollow building cover of cast-in-situ steel reinforced concrete

The utility model relates to a kind of two-way hollow building cover of cast-in-situ steel reinforced concrete that uses on industry and civilian construction.

At present, in the prior art, cast-in-situ beam slab formula building cover structure height is big, out-of-flatness at the bottom of the plate; The solid superstructure of no beam is from great, to antiseismic unfavorable, and the cost height; Close rib building roof unit price height, injustice at the bottom of the plate, not attractive in appearance, need furred ceiling; It is little that precast hollow slab floor is suitable for span, easy crack, and easy to leak, structural integrity is poor; Cast-in-place unidirectional pore-forming hollowcore slab, owing to be far longer than rigidity perpendicular to the hole direction along the rigidity of hole direction, the space poor performance, be the single load bearing system, can not satisfy the needs of building space force structure form, and being the solid girt strip of steel concrete between the hollow hole, rib material can not be given full play to its mechanical property in loading process, cause waste of material and deadweight to increase.

In the patent documentation of notification number CN86103515, a kind of slab member with two-way hole is disclosed, the member of this " in same member, having the hole of finding time of both direction in length and breadth simultaneously ", following shortcoming is arranged: this hollowcore slab with two-way hole belongs to precast unit, when being used for building cover structure, the suitable span that it has general precast hollow slab equally is little, easy crack, undesirable features such as structural integrity difference; On the other hand, produce in the process of prefabricated concrete hollow slab, realize that the difficulty of " the two-way hole of finding time " is very big, and be difficult to the accuracy of the locus of assurance " the two-way hole of finding time " at the batch production streamline.

The purpose of this utility model is the shortcoming that overcomes prior art, and a kind of, easy construction low from heavy and light, cost, heat preservation and soundproof is effective, structural mechanical property the is good two-way hollow building cover of cast-in-situ steel reinforced concrete are provided.

The two-way hollow building cover of the utility model cast-in-situ steel reinforced concrete is to constitute like this: it comprises the concrete upper layer, surface layer under the concrete, be preset at the two-way pore-forming preburied component between the surface layer and concrete upper layer under the concrete, the concrete rib post and the dark beam of concrete that under concrete, are separated with preburied component by two-way pore-forming between surface layer and the concrete upper layer, and be configured in common steel bar stress in the concrete; Cross over the superstructure of large span more (promptly 18 meters with upper span) for needs, the linear prestressed reinforcement can be set in surface layer under the concrete or in the dark beam of concrete, the shaped form prestressed reinforcement be set, or simultaneously the linear prestressed reinforcement is set in the surface layer under concrete, in the dark beam of concrete, the shaped form prestressed reinforcement is set.It is characterized in that: surface layer, concrete rib post, the dark beam of concrete and be configured in common steel bar stress and prestressed reinforcement in them under concrete upper layer, the concrete are at the construction field (site) the reinforced concrete structure stress layer of monobloc cast continuously; Two-way pore-forming is preset at before concreting in the reinforcing bar of superstructure, and is positioned by the stationary positioned member with the mode of preburied component with mutually orthogonal in same plane or oblique.Two-way pore-forming is to form the two-way in length and breadth hollow hole with respect to solid concrete by design attitude in superstructure with the effect of preburied component.

The used two-way pore-forming of the two-way hollow building cover of the utility model cast-in-situ steel reinforced concrete can be closed hard cavity tube or closed hard cavity box or the solid made with light material with preburied component, and its cross sectional shape can be circle, square, trapezoidal or other is special-shaped.Can be steel concrete thin wall cylinder (box) or steel wire refinforced cement tube (box) or fibre reinforced cement tube (box) or steel cylinder (box) or plastic barrel (box) or waterproof hard paper web (box) as two-way pore-forming with the closed hard cavity tube and the closed hard cavity box of preburied component.For improving the heat preservation and soundproof performance of superstructure, the solid that two-way pore-forming can adopt light material to make with preburied component, the solid that described light material is made can be with cementitious material coagulation machine-shapings such as light materials such as the expanded perlite with hydrophobic bisque, haydite, cinder, foamed plastics, vermiculite and cement; Also can fill light materials such as expanded perlite, haydite, cinder, foamed plastics, vermiculite with the inner space of the closed hard cavity tube (box) of preburied component as two-way pore-forming.

The two-way hollow building cover of the utility model cast-in-situ steel reinforced concrete is on appearance and modeling, the ceiling of superstructure bottom surface is flat (sleeper cap or do not have cap), can be during finishing without furred ceiling, under the constant situation of room headway, superstructure thickness reduces, can increase the number of plies of high-rise building, increase usable floor area.

The two-way hollow building cover of the utility model cast-in-situ steel reinforced concrete compared with prior art, has following advantage owing to adopted technique scheme:

1, under the situation of same intensity and same stiffness, because superstructure hollow rate height, lighter, the suitable span of its deadweight is bigger.

2, easy construction, safely and fast, construction cost is low.

3, thermal insulation and soundproof effect are good.

4, save material, reduce comprehensive cost.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the structural representation of a specific embodiment of the two-way hollow building cover of the utility model cast-in-situ steel reinforced concrete;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the schematic diagram of two-way pore-forming with preburied component stationary positioned form.

With reference to accompanying drawing, the two-way hollow building cover of the cast-in-situ steel reinforced concrete of this embodiment comprises that surface layer (2) under concrete upper layer (1), the concrete, concrete rib post (3), the dark beam of concrete (4), two-way pore-forming are with preburied component (5) and be configured in common steel bar stress in the concrete; Cross over the superstructure of large span more (promptly 18 meters with upper span) for needs, linear prestressed reinforcement (6) can be set in surface layer under the concrete (2), or shaped form prestressed reinforcement (7) is set in the dark beam of concrete (4), or simultaneously linear prestressed reinforcement (6) is set in the surface layer (2) under concrete, shaped form prestressed reinforcement (7) is set in the dark beam of concrete (4).Two-way pore-forming is provided with the mode of preburied component (5) by mutually orthogonal in same plane (also can be mutual oblique).

The two-way hollow building cover of the utility model cast-in-situ steel reinforced concrete can be widely used in multilayer, high level and super high rise building, adopts the on-the-spot concrete mode of monobloc cast continuously to construct.During construction, on soffit formwork, at first lay common steel bar stress in surface layer under the concrete (2), concrete rib post (3), the dark beam of concrete (4) (as linear prestressed reinforcement (6) or/and during shaped form prestressed reinforcement (7), also at this moment they are laid), use stationary positioned member (8) by the fixing two-way pore-forming preburied component (5) in the locus of design then, re-lay the common steel bar stress in the concrete upper layer (1), build the concrete of superstructure at last.Fixing two-way pore-forming with the stationary positioned member (8) of preburied component (5) by the fastening iron wire of annular level (8-1), the vertical fastening iron wire of inverted U (8-2) with place the locating piece (8-3) on the superstructure soffit formwork to form.Two-way pore-forming can be closed hard cavity tube or closed hard cavity box or the solid made with light material with preburied component (5), and its cross sectional shape can be circular, square, trapezoidal or other is special-shaped, is circular in the accompanying drawing.Can be steel concrete thin wall cylinder (box) or steel wire refinforced cement tube (box) or fibre reinforced cement tube (box) or steel cylinder (box) or plastic barrel (box) or waterproof hard paper web (box) as two-way pore-forming with the closed hard cavity tube and the closed hard cavity box of preburied component (5).For improving the heat preservation and soundproof performance of superstructure, the solid that two-way pore-forming can adopt light material to make with preburied component (5), the solid that described light material is made can be with cementitious material coagulation machine-shapings such as light materials such as the expanded perlite with hydrophobic bisque, haydite, cinder, foamed plastics, vermiculite and cement; Also can fill light materials such as expanded perlite, haydite, cinder, foamed plastics, vermiculite with the inner space of the closed hard cavity tube (box) of preburied component (5) as two-way pore-forming.

Claims

1, the two-way hollow building cover of a kind of cast-in-situ steel reinforced concrete, it comprises the concrete upper layer, surface layer under the concrete, be preset at the two-way pore-forming preburied component between the surface layer and concrete upper layer under the concrete, the concrete rib post and the dark beam of concrete that under concrete, are separated with preburied component by two-way pore-forming between surface layer and the concrete upper layer, and be configured in common steel bar stress in the concrete; Cross over the superstructure of large span more (promptly 18 meters with upper span) for needs, the linear prestressed reinforcement can be set in surface layer under the concrete or in the dark beam of concrete, the shaped form prestressed reinforcement be set, or simultaneously the linear prestressed reinforcement is set in the surface layer under concrete, in the dark beam of concrete, the shaped form prestressed reinforcement is set.It is characterized in that: surface layer, concrete rib post, the dark beam of concrete and be configured in common steel bar stress and prestressed reinforcement in them under concrete upper layer, the concrete are the reinforced concrete structure stress layer of continuous placing at the construction field (site); Two-way pore-forming is preset at before concreting in the reinforcing bar of superstructure, and is positioned by the stationary positioned member with the mode of preburied component with mutually orthogonal in same plane or oblique.

2, the two-way hollow building cover of cast-in-situ steel reinforced concrete according to claim 1, it is characterized in that described two-way pore-forming preburied component is closed hard cavity tube or closed hard cavity box or the solid made with light material, its cross sectional shape can be circle, square, trapezoidal or other is special-shaped.

3, the two-way hollow building cover of cast-in-situ steel reinforced concrete according to claim 2 is characterized in that described closed hard cavity tube and closed hard cavity box are steel concrete thin wall cylinder (box) or steel wire refinforced cement tube (box) or fibre reinforced cement tube (box) or steel cylinder (box) or plastic barrel (box) or waterproof hard paper web (box).

4, the two-way hollow building cover of cast-in-situ steel reinforced concrete according to claim 2 is characterized in that the described solid made from light material is cementitious material coagulation machine-shapings such as light materials such as expanded perlite with hydrophobic bisque, haydite, cinder, foamed plastics, vermiculite and cement.

5, the two-way hollow building cover of cast-in-situ steel reinforced concrete according to claim 2 is characterized in that light materials such as expanded perlite, haydite, cinder, foamed plastics, vermiculite can be filled in the inner space of described closed hard cavity tube and closed hard cavity box.

6, the two-way hollow building cover of cast-in-situ steel reinforced concrete according to claim 1 is characterized in that described stationary positioned member is the fastening iron wire of annular level, inverted U-shaped vertical fastening iron wire and places locating piece on the superstructure soffit formwork.