CN1133784C - In-situ deposited prefabricated combined hollow prestressed concrete roof - Google Patents
In-situ deposited prefabricated combined hollow prestressed concrete roof Download PDFInfo
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- CN1133784C CN1133784C CNB011360461A CN01136046A CN1133784C CN 1133784 C CN1133784 C CN 1133784C CN B011360461 A CNB011360461 A CN B011360461A CN 01136046 A CN01136046 A CN 01136046A CN 1133784 C CN1133784 C CN 1133784C
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Abstract
The present invention relates to a cast-in-place prefabricated combined hollow prestressed concrete floor which is composed of an exposed beam, a hidden beam, a main stressed steel bar 1 in a slab, a constructional steel bar 2, concrete 3 and hollow pipe members 4 prefabricated in the steel bars. The present invention is characterized in that the hollow pipe members 4 is prefabricated bidirectional hollow pipe members 4 with transverse stiffening ribs 5; prestressed steel bars are arranged in cast-in-place reinforced concrete longitudinal ribs 6; the stiffening ribs 5 and the prestressed cast-in-place reinforced concrete longitudinal ribs 6 are combined, and then are connected with beams between wall columns so as to form a beam ribbed structure; simultaneously, a longitudinally laminated I-shaped stress structure 9 is composed of the stiffening ribs 5 and the upper flange 7 and the lower flange 8 of the cast-in-place reinforced concrete; a transverse cast-in-place I-shaped stress structure 23 is composed of the longitudinal ribs 6 and the upper flange 7 and the lower flange 8; the longitudinally laminated I-shaped stress structure 9, the transverse cast-in-place I-shaped stress structure 23 and the beams jointly form a bidirectional prestressed stress structural system. The present invention is suitable for the floors, roofs, foundation bottom slabs and cast-in-place reinforced concrete walls of industrial and civil architectures.
Description
The present invention relates to a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof.
At present, in the prior art, hollow pipe component is generally paper tube, plastic pipe, metal bellows or cavity hard thin-wall members etc., and these hollow pipe components are used for superstructure and mainly consider to find time concrete, alleviate floor weight.Existing hollow prestressed concrete roof, generally form by main stress reinforcing bar in the bright beam between wall column, dark beam, the plate, distributing bar, concrete, the hollow section that is preset in the reinforcing bar, the cross sectional shape of hollow pipe component can be circle, square or other is special-shaped, is provided with prestressed reinforcement in the bright beam of superstructure and dark beam.Hollowcore slab in this class superstructure is owing to the concrete in the plate is found time by hollow pipe component, in the outside Cast-in-place concrete rib is arranged vertically along pipe, laterally then there be not Force transmission parts, or only have prevent that wet concrete and cement paste from entering two seal plug, cause the effect that to bear complicated pulling force, pressure, shearing, flush shear force, moment of torsion etc. in the pipe of existing non-core-drawing pore-creating, make cast-in-place hollow prestressed concrete roof two direction rigidity great disparities bigger, and can't form the two-way superstructure of well word rib equivalence.This kind superstructure then exists hollowcore slab thickness big as comparing with two-way ribbed slab floor, and the steel bar concrete consumption is big, from great, deflection deformation is big, shearing resistance, torsional property are poor, Cast-in-place concrete weakness easy crack in bottom flange on the hollow section, shock resistance is poor, two-way stiffness difference is big, the pipe cracky, and the Cast-in-place concrete leakage loss is big, problems such as cost height, when particularly the large span flooring was used, therefore concrete cracking and contraction obviously developed a kind of novel in-situ deposited prefabricated combined hollow prestressed concrete roof for being badly in need of.
The object of the present invention is to provide a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof, it is little to have hollowcore slab thickness, and the steel bar concrete consumption is little, and is in light weight, deflection deformation is little, and the shearing resistance torsional property is strong, is difficult for the crack, characteristics such as bidirectional stress power transmission difference is little, and shock resistance is strong, and cost is low.
Solution of the present invention is that hollow pipe component is the two-way hollow pipe component of prefabricated band transverse stiffener, in the cast-in-situ reinforced concrete longitudinal rib, be provided with prestressed reinforcement, constitute the cast-in-situ reinforced concrete longitudinal rib, both are in conjunction with constituting the two-way dark close rib net of prestressing force, and is connected formation prestressed girder two-way ribs structure with dark beam with bright beam between the wall column; Simultaneously, the upper and lower edge of a wing of the cast-in-situ reinforced concrete that transverse stiffener in the two-way hollow pipe component and two-way hollow pipe component are upper and lower links for whole, constitute superimposed longitudinally I-shaped force structure, the upper and lower edge of a wing of prestressed in-situ depositing steel bar concrete longitudinal rib and cast-in-situ reinforced concrete constitutes horizontal cast-in-place I-shaped force structure, be embedded with the prestressing force that connects with prefabricated stiffening rib in the cast-in-place I-shaped structure, they constitute the structural system of prestressing force bidirectional stress together jointly with bright beam and dark beam.Like this, two-way hollow pipe component is not only template, but also is lateral stressed member, eliminated behind the hollow section pore-forming in the past the defective that no primary structure member and cracking resistance are constructed in the pipe, improve Stress Transfer, eliminated the hollow section wall stress and concentrated, can prevent the structure technology disaster effectively.Simultaneously, owing in plate, be provided with prestressed reinforcement, therefore, can prevent the cracking and the contraction of superstructure concrete better.In addition, it is little also to have hollowcore slab thickness, characteristics such as the steel bar concrete consumption is little, and is in light weight, and deflection deformation is little, and the shearing resistance torsional property is strong, is difficult for the crack, and bidirectional stress power transmission difference is little, and shock resistance is strong, and cost is low, thus reached purpose of the present invention.
In addition, the present invention and common non-prestressed hollow building cover more also have following advantage:
1, improves the crack resistance and the shrinkage cracking of two-way hollow building cover;
2, can increase the span of two-way hollow building cover;
3, two-way hollowcore slab thickness of slab;
4, reduce the distortion of large-span bidirectional hollow building cover;
5, improve the shock resistance of two-way hollow building cover.
Feature of the present invention is that also prestressed reinforcement arranges on the vertical direction with respect to the longitudinal axis of two-way hollow pipe component, can be arranged in two-way hollow pipe component bottom flange or groove, perhaps pass in the cavity or die cavity of two-way hollow pipe component, perhaps in the cast-in-situ reinforced concrete between two pipe ends of two-way hollow pipe component.
But feature of the present invention also is prestressed reinforcement straight line cloth muscle in superstructure, but also curve cloth muscle.
Feature of the present invention also is to contain in the transverse stiffener in the two-way hollow pipe component reinforcing bar, steel mesh reinforcement, gauze wire cloth, fiber, fleece that strengthens usefulness or the combination that both are above, dew muscle, dew net that above-mentioned muscle, net can reveal behind muscle, dew net or the spreading stretch in the cast-in-situ reinforced concrete, reinforcing bar perhaps first and in the cast-in-situ reinforced concrete is connected, pour concrete firmly bonds and drawknot prefabrication transverse stiffening rib and Cast-in-place concrete and reinforcing bar again.
Feature of the present invention also be transverse stiffener the dew muscle, reveal net and stretch into bright beam, dark beam, cast-in-place steel rib concrete longitudinal rib and firmly be connected with the vertical presstressed reinforcing steel of two-way hollow pipe component axis direction, constitute and the crisscross force structure of prestressed girder rib.
Feature of the present invention is that also there is sinking partial groove or whole groove week at the transverse stiffener position in the two-way hollow pipe component along pipe, Cast-in-place concrete stretches in the outer groove of two-way hollow pipe component, form the Cast-in-place concrete tenon or the Cast-in-place concrete fin that protrude, Cast-in-place concrete tenon or Cast-in-place concrete fin by interface agglutination or the dew muscle that stretches out with transverse stiffener, reveal net and be connected, constitute superimposed transverse stiffener with prefabrication transverse stiffening rib in the two-way hollow pipe component.
Feature of the present invention also is to put down at the bottom of two-way hollow pipe component member tube outer wall and the floor, the cast-in-situ reinforced concrete bottom flange is disconnected by two-way hollow pipe component at the bottom of two-way hollow pipe component, reinforcing bar and Cast-in-place concrete only pass the position of groove of pipe stiffening rib of two-way hollow pipe component with two-way hollow pipe component both sides cast-in-situ reinforced concrete drawknot, constitute superimposed transverse stiffener, also can while arrangement prestress reinforcing bar in reinforcing bar position.
The thickness, reinforcement ratio that feature of the present invention also is the horizontal prefabricated stiffening rib in the two-way hollow pipe component on the wall limit, dark beam limit, post limit be bigger or identical, the hollowcore slab middle part is identical or diminish.
Feature of the present invention also be cassette ceiling beam limit, post limit, wall limit cast-in-place hollow concrete unit area reckon the actual amount after a discount the reckon the actual amount after a discount thickness of thickness more than or equal to concrete in the plate.
Feature of the present invention is that also the transverse stiffener both sides can be provided with the increase stiffening rib rigidity of protrusion, the reinforcing rib of intensity.
Feature of the present invention is that also transverse stiffener can be porose or atresia, porose formation plate muscle stiffening rib, pure muscle stiffening rib, plate hole stiffening rib, and atresia forms plate stiffening rib, plate muscle stiffening rib.
Feature of the present invention is that also the transverse stiffener both sides are useful on the template of stiffening rib moulding in the pipe, form removable.
Feature of the present invention is that also the transverse stiffener both sides are useful on the template of stiffening rib moulding in the pipe, and template is not removed, the superimposed stiffening rib of the common formation of template of not tearing open and stiffening rib.
Feature of the present invention is that also described template and body are prefabricated into one, constitutes stiffening rib forming mould chamber, and have the hole on the body of the empty die cavity between two templates, by pouring into concrete or steel bar concrete, constitutes superimposed stiffening rib with two templates.
Feature of the present invention also is transverse stiffener, and the protruding pipe outer wall that exposes can reveal muscle, reveal net and stretch into Cast-in-place concrete on it, by being connected with reinforcing bar with Cast-in-place concrete is glued, form superimposed transverse stiffener.
Feature of the present invention is that also two-way hollow pipe component two ends can be two plugs, also can be two stiffening ribs, can an end be stiffening rib also, and the other end is a plug.
The cross section that feature of the present invention also is two-way hollow pipe component its radial dimension along its length is that equate or variable.
Feature of the present invention is that also two-way hollow pipe component has anti-floating stationary positioned structure, and they are hook reinforcing bar, lacing wire or draw ring.
Feature of the present invention is that also two-way hollow pipe component can arrange two-layer, three layers or multilayer up and down.
Feature of the present invention is that also two-way hollow pipe component is arranged vertically mutually in cassette ceiling.
Feature of the present invention is that also the hollowcore slab lower prop on post limit does not have the cap of protrusion.
Feature of the present invention is that also the body of two-way hollow pipe component and transverse stiffener are same materials, or different materials.
Feature of the present invention is that also the body of two-way hollow pipe component is Cement fibre pipe, Cement fibre stringing, cement mortar fibre pipe, metal bellows, plastic film capicitor, plastic pipe, metal tube, cement steel wire webmaster, cement mortar steel wire tube, asbestos cement pipe or resin fibre pipe.
Feature of the present invention is that also transverse stiffener can be steel bar concrete, fiber concrete, fibre mortar, polymer mortar or prestressing force frame.
When feature of the present invention was that also transverse stiffener is steel bar concrete or plain concrete, its proportioning of concrete was cement 20-35%, sand 30-60%, silica flour 1-5%, stone 40-70%, UEA expansion agent 8-15%, FDN high efficiency water reducing agent 0.8-1.2%, fiber 0.01-1%, early strength admixture 1-3%.
When feature of the present invention is that also transverse stiffener is the wire mesh mortar moulding, the mortar proportioning is cement 30-35%, and silica flour 2-6%, mixes the efficient composite water-reducing agent 0.5-0.8% of SD outward at sand 60%-80%, UEA expansion agent 8-12%, polypropylene emulsion 1-3%, early strength admixture 1-2%.
The hollow part that feature of the present invention also is two-way hollow pipe component is filling foamed plastics, expanded perlite, expanded vermiculite, foaming or aerated light concrete, rock wool, mineral wool etc. partly or entirely.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the local enlarged diagram of Fig. 1 .
Fig. 3 is Fig. 1
Local enlarged diagram.
Fig. 4 is the local enlarged diagram of Fig. 1 .
Fig. 5 is the 1-1 sectional view of Fig. 1.
Fig. 6 is Fig. 1
Local enlarged diagram.
Fig. 7 is the 2-2 sectional view of Fig. 1.
Fig. 8 is the 3-3 sectional view of Fig. 1.
Fig. 9 is another embodiment of the present invention figure.
Figure 10 is Fig. 9
Local enlarged diagram.
Figure 11 is Fig. 9
Local enlarged diagram.
Figure 12 is Fig. 9
Local enlarged diagram.
Figure 13 is the structural representation that a two-way hollow pipe component 4 of reducing of the present invention and an end have cross-shaped steel 26.
Figure 14 is another embodiment of the present invention figure.
Figure 15 is the 4-4 sectional view of Figure 14.
Figure 16 is the 5-5 sectional view of Figure 14.
Figure 17 is the 6-6 sectional view of Figure 14.
Figure 18,19,20,21,22,23 is the schematic diagram of the transverse stiffener 5 of different reinforcing rib schemes.
Figure 24 superimposed structural representation that is transverse stiffener 5 with presetting template 18.
Figure 25,26 is for pouring into the schematic diagram of steel bar concrete in prefabricated stiffening rib die cavity and the die cavity.
Figure 27, the 28th, two-way hollow pipe component 4 of the present invention docks situation and pipe end constructions schematic diagram in floor.
Figure 29 is that the present invention becomes the two-way hollow pipe component schematic diagram of diameter.
Figure 30 is that the present invention is out of shape two-way hollow pipe component schematic diagram.
Figure 31 is two-way hollow pipe component of the present invention layered arrangement structural representation about in the of 4.
Figure 32 is that two-way hollow pipe component 4 of the present invention is arranged vertically structural representation mutually.
Figure 33 be the user mode of the stiffening rib 2 of different reinforcing rib schemes of the present invention pile up and cast-in-situ reinforced concrete longitudinal rib 6 in the schematic diagram of prestressed members 26.
Figure 34, the 35th, the schematic diagram that two-way hollow pipe component 4 of the present invention is helical bellows and fluted 15.
The present invention is further illustrated below in conjunction with drawings and Examples.
The present invention as shown in drawings, it is by the bright beam between wall column, dark beam, main stress reinforcing bar 1 in the plate, distributing bar 2, concrete 3, the hollow pipe component 4 that is preset in the reinforcing bar is formed, the cross sectional shape of hollow pipe component 4 can be circle, square or other is special-shaped, it is characterized in that the two-way hollow pipe component 4 of hollow pipe component 4 for prefabricated band transverse stiffener 5, in cast-in-situ reinforced concrete longitudinal rib 6, be provided with prestressed reinforcement 25, constitute cast-in-situ reinforced concrete longitudinal rib 6, both are in conjunction with constituting the two-way dark close rib net of prestressing force, and is connected formation prestressed girder two-way ribs structure with dark beam with bright beam between the wall column; Simultaneously, the upper and lower edge of a wing 7,8 of the cast-in-situ reinforced concrete that the transverse stiffener 5 in the two-way hollow pipe component 4 and two-way hollow pipe component 4 are upper and lower links for whole, constitute superimposed longitudinally I-shaped force structure 9, the upper and lower edge of a wing 7,8 of prestressed in-situ depositing steel bar concrete longitudinal rib 6 and cast-in-situ reinforced concrete constitutes horizontal cast-in-place I-shaped force structure 23, be embedded with the prestressing force 26 that connects with prefabricated stiffening rib in the cast-in-place I-shaped structure, they constitute the structural system of prestressing force bidirectional stress together jointly with bright beam and dark beam.Like this, two-way hollow pipe component 4 is not only template, but also is primary structure member, has eliminated behind the hollow section pore-forming in the past the defective that no primary structure member and cracking resistance are constructed in the pipe, can prevent the structure technology disaster effectively.Simultaneously, owing in plate, be provided with prestressed reinforcement, therefore, can prevent the cracking and the contraction of superstructure concrete better.In addition, it is little also to have hollowcore slab thickness, characteristics such as the steel bar concrete consumption is little, and is in light weight, and deflection deformation is little, and the shearing resistance torsional property is strong, is difficult for the crack, and bidirectional stress power transmission difference is little, and shock resistance is strong, and cost is low, thus reached purpose of the present invention.The center line horizontal profile of the two-way hollow pipe component 4 among Fig. 1, Figure 32 has reflected that transverse stiffener 5 combines with cast-in-situ reinforced concrete longitudinal rib 6, constitutes two-way dark close rib net; Fig. 1 has also reflected the situation that is provided with presstressed reinforcing steel 25 in Cast-in-place concrete longitudinal rib 6 simultaneously.Fig. 2,3,4 has reflected that the upper and lower edge of a wing 7,8 of the cast-in-situ reinforced concrete that transverse stiffener 5 and two-way hollow pipe component 4 are upper and lower links for whole, constitutes the situation of superimposed longitudinally I-shaped force structure 9.Fig. 5,7,8 has reflected the situation of cast-in-situ reinforced concrete longitudinal rib 6 with the horizontal I-shaped force structure 23 of the upper and lower edge of a wing 7,8 formations of cast-in-situ reinforced concrete, and The combined constitutes two-way I-shaped force structure system.
Feature of the present invention is that also prestressed reinforcement arranges on the vertical direction with respect to the longitudinal axis of two-way hollow pipe component 4, can be arranged in two-way hollow pipe component 4 bottom flanges or groove 15, perhaps pass in the cavity 21 or die cavity 19 of two-way hollow pipe component 4, perhaps in the cast-in-situ reinforced concrete between two pipe ends of two-way hollow pipe component 4.Fig. 2,3,4,6 has reflected presstressed reinforcing steel in the hollow pipe component bottom flange, the situation of arranging in the concrete between two pipe ends.Figure 36,37 has reflected that presstressed reinforcing steel passes the structural representation of hollow pipe component cavity in superstructure.
But feature of the present invention also is prestressed reinforcement straight line cloth muscle in superstructure, but also curve cloth muscle.Figure 36,37 has reflected the situation of presstressed reinforcing steel arrangement of curves in superstructure.
Feature of the present invention also is to contain in the transverse stiffener 5 in the two-way hollow pipe component 4 reinforcing bar 10, steel mesh reinforcement 11, gauze wire cloth 12, fiber, fleece that strengthens usefulness or the combination that both are above, dew muscle 13, dew net 14 that above-mentioned muscle, net can reveal behind muscle 13, dew net 14 or the spreading stretch in the cast-in-situ reinforced concrete, reinforcing bar perhaps first and in the cast-in-situ reinforced concrete is connected, pour concrete firmly bonds and drawknot prefabrication transverse stiffening rib 5 and Cast-in-place concrete 3 and reinforcing bar 1,2 again.Fig. 2,3,4,6 stretches in the cast-in-situ reinforced concrete for the reinforcing bar in the transverse stiffener 5 has the muscle 13 of revealing, and is connected with reinforcing bar in the steel bar concrete.
Feature of the present invention also be transverse stiffener 5 dew muscle 13, reveal net 14 and stretch into bright beam 28, dark beam 24, cast-in-place steel rib concrete longitudinal rib 6 and firmly be connected with the vertical presstressed reinforcing steel of two-way hollow pipe component 4 axis directions, constitute and the crisscross force structure of prestressed girder rib.
Feature of the present invention is that also there are partial groove 15 or whole groove 15 in transverse stiffener 5 positions in the two-way hollow pipe component 4 along the sinking of pipe week, Cast-in-place concrete stretches in two-way hollow pipe component 4 groove 15 outward, form the Cast-in-place concrete tenon or the Cast-in-place concrete fin that protrude, Cast-in-place concrete tenon or Cast-in-place concrete fin by interface agglutination or the dew muscle 13 that stretches out with transverse stiffener 5, reveal net 14 and be connected, with the superimposed transverse stiffener 5 of prefabrication transverse stiffening rib 5 formations in the two-way hollow pipe component 4.Figure 4 shows that transverse stiffener 5 positions in the two-way hollow section 4 are fluted 15 along sinking in pipe week, the upper and lower edge of a wing 7,8 of Cast-in-place concrete is stretched in the outer groove of two-way hollow section 15 and is formed the Cast-in-place concrete fins, constitutes superimposed transverse stiffener 5 with prefabrication transverse stiffening rib 5.Figure 34, the 35th, two-way hollow pipe component 4 are the schematic diagram of screw type corrugated pipe and fluted 15.
The present invention is shown in Figure 11,12, it is characterized in that putting down at the bottom of two-way hollow pipe component member 4 pipe outer walls and the floor, cast-in-situ reinforced concrete bottom flange 8 was disconnected by two-way hollow pipe component 4 at 4 ends of two-way hollow pipe component, reinforcing bar 1 and Cast-in-place concrete 3 only pass the position of groove 15 of pipe stiffening rib 5 of two-way hollow pipe component 4 with two-way hollow pipe component both sides cast-in-situ reinforced concrete drawknot, constitute superimposed transverse stiffener 5, also can while arrangement prestress reinforcing bar 25 in the position of reinforcing bar 1.Figure 10 is the structural representation of inverted T-shaped for the cross section of transverse stiffener 5; Figure 11 is last flat recessed structural representation for the cross section of prefabricated transverse stiffener 5; To be that the cross section of prefabricated transverse stiffener 5 is upper and lower be the structural representation of different grooves 15 to Figure 12.
The thickness, reinforcement ratio that feature of the present invention also is the horizontal prefabricated stiffening rib 5 in two-way hollow section 4 members on wall 17 limits, dark beam 24 limits, post 25 limits are bigger or identical, can be identical or diminish in the hollowcore slab middle part.As shown in Figure 9, for the schematic diagram of 2 of wall 26 and plates is bigger at the thickness near the stiffening rib 5 on wall 17 limits, less away from the thickness of the stiffening rib 5 on wall 17 limits.
Feature of the present invention also be cassette ceiling beam limit, post limit, wall limit cast-in-place hollow concrete unit area reckon the actual amount after a discount the reckon the actual amount after a discount thickness of thickness more than or equal to concrete in the plate.As shown in figure 13, left end is near beam limit, post limit, wall limit end, and the thickness of reckoning the actual amount after a discount of cast-in-place hollow concrete unit area is successively and reduces from left to right.
Feature of the present invention is that also transverse stiffener 5 both sides can be provided with increase stiffening rib 5 rigidity of protrusion, the reinforcing rib 16 of intensity.Shown in Figure 14,15,16,17, transverse stiffener 5 both sides are provided with reinforcing rib 16.Figure 14 is the schematic diagram between post 25, dark beam 24 and the plate.
Feature of the present invention is that also transverse stiffener 5 can be porose 17 or atresia, porose 17 formation plate muscle stiffening rib, pure muscle stiffening rib, plate hole stiffening rib, the formation plate stiffening rib of atresia, plate muscle stiffening rib.Figure 15 is a plate muscle stiffening rib, and Figure 18,21 is pure muscle stiffening rib, and Figure 19,20 is the plate stiffening rib.Figure 16,17,22,23 is a plate muscle stiffening rib.
Feature of the present invention is that also transverse stiffener 5 both sides are useful on the template 18 of stiffening rib 5 moulding in the pipe, and template 18 is removed.
Feature of the present invention is that also transverse stiffener 5 both sides are useful on the template 18 of stiffening rib 5 moulding in the pipe, and template 18 is not removed, template 18 of not tearing open and the superimposed stiffening rib of stiffening rib 5 common formations.Figure 24 is template 18 and the superimposed stiffening rib 5 of stiffening rib 5 common formations.
Feature of the present invention is that also described template 18 is prefabricated into one with body 4, constitutes stiffening rib 5 forming mould chambeies 19, and have the hole on the body 4 of the empty die cavity 19 between two templates 18, by pouring into concrete or steel bar concrete, constitutes superimposed stiffening rib with two templates 18.Figure 25,26 is for pouring into the schematic diagram of steel bar concrete in prefabricated stiffening rib die cavity 19 and the die cavity 19.
Feature of the present invention also is transverse stiffener 5, and protruding pipe 4 outer walls that expose can reveal muscle 13, reveal net 14 and stretch into Cast-in-place concrete 3 it on, by being connected with reinforcing bar with the Cast-in-place concrete gluing, form superimposed transverse stiffener 5.Fig. 8 is transverse stiffener 5 protruding pipe 4 outer walls that expose, and its cross section is circle rib pipe; Figure 13 is the situation that the transverse stiffener 5 of the two-way hollow pipe component 4 of reducing protrudes outer wall.
Feature of the present invention is that also two-way hollow pipe component 4 two ends can be two plugs 22, also can be two stiffening ribs 5, can an end be stiffening rib 5 also, and the other end is a plug 22.Figure 27,28 is for two-way hollow pipe component 4 one ends are stiffening rib 5, and the other end is the situation of plug 22.Figure 27 two pipe butt joints leave certain width and water concrete, with pipe end stiffening rib 5 common formation transverse stiffeners 5; Figure 28 two pipe butt joints are near not spacing.
The cross section that feature of the present invention also is two-way hollow pipe component 4 its radial dimension along its length is that equate or variable.Figure 13, the 29th, the two-way hollow pipe component of reducing, Figure 30 are the two-way hollow pipe components of distortion.
Feature of the present invention is that also two-way hollow pipe component 4 has anti-floating stationary positioned structure 20, and they are hook reinforcing bar, lacing wire or draw ring.Figure 17,20 locating structure are the draw ring structure.
Feature of the present invention is that also two-way hollow pipe component 4 can arrange two-layer, three layers or multilayer up and down.Figure 31 is 4 fens two-layer layouts of two-way hollow pipe component.
The present invention shown in figure 32, its feature is that also two-way hollow pipe component 4 is arranged vertically mutually in cassette ceiling.
Feature of the present invention also is not have at the hollowcore slab lower prop on post limit the cap of protrusion.
Feature of the present invention is that also the body of two-way hollow pipe component 4 and transverse stiffener 5 are same materials, or different materials.
Feature of the present invention is that also the body of two-way hollow pipe component 4 is Cement fibre pipe, Cement fibre stringing, cement mortar fibre pipe, metal bellows, plastic film capicitor, plastic pipe, metal tube, cement steel wire webmaster, cement mortar steel wire tube, asbestos cement pipe or resin fibre pipe.
Feature of the present invention is that also transverse stiffener 5 can be steel bar concrete, fiber concrete, fibre mortar, polymer mortar or prestressing force frame.
When feature of the present invention also was transverse stiffener 5 for steel bar concrete or plain concrete, its proportioning of concrete was cement 20-35%, sand 30-60%, silica flour 1-5%, stone 40-70%, UEA expansion agent 8-15%, FDN high efficiency water reducing agent 0.8-1.2%, fiber 0.01-1%, early strength admixture 1-3%.
When feature of the present invention also is transverse stiffener 5 for the wire mesh mortar moulding, the mortar proportioning is cement 30-35%, and silica flour 2-6%, mixes the efficient composite water-reducing agent 0.5-0.8% of SD outward at sand 60%-80%, UEA expansion agent 8-12%, polypropylene emulsion 1-3%, early strength admixture 1-2%.
The hollow part 21 that feature of the present invention also is two-way hollow pipe component 4 is filling foamed plastics, expanded perlite, expanded vermiculite, foaming or aerated light concrete, rock wool, mineral wool etc. partly or entirely.
Claims (27)
1, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof, it is made up of main stress reinforcing bar 1 in the bright beam between wall column, dark beam, the plate, distributing bar 2, concrete 3, the hollow pipe component 4 that is preset in the reinforcing bar, it is characterized in that the two-way hollow pipe component 4 of hollow pipe component 4 for prefabricated band transverse stiffener 5, in cast-in-situ reinforced concrete longitudinal rib 6, be provided with prestressed reinforcement 25, constitute cast-in-situ reinforced concrete longitudinal rib 6, both are in conjunction with constituting the two-way dark close rib net of prestressing force, and is connected formation prestressed girder two-way ribs structure with dark beam with bright beam between the wall column; Simultaneously, the upper and lower edge of a wing 7,8 of the cast-in-situ reinforced concrete that the transverse stiffener 5 in the two-way hollow pipe component 4 and two-way hollow pipe component 4 are upper and lower links for whole, constitute superimposed longitudinally I-shaped force structure 9, the upper and lower edge of a wing 7,8 of prestressed in-situ depositing steel bar concrete longitudinal rib 6 and cast-in-situ reinforced concrete constitutes horizontal cast-in-place I-shaped force structure 23, be embedded with the prestressing force 26 that connects with prefabricated stiffening rib in the cast-in-place I-shaped structure, they constitute the structural system of prestressing force bidirectional stress together jointly with bright beam and dark beam.
2, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 1, it is characterized in that prestressed reinforcement arranges on the vertical direction with respect to the longitudinal axis of two-way hollow pipe component 4, can be arranged in two-way hollow pipe component 4 bottom flanges or groove 15, perhaps pass in the cavity 21 or die cavity 19 of two-way hollow pipe component 4, perhaps in the cast-in-situ reinforced concrete between two pipe ends of two-way hollow pipe component 4.
3,, but it is characterized in that prestressed reinforcement straight line cloth muscle in superstructure according to claim 12 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs in other words, but also curve cloth muscle.
4, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, it is characterized in that containing in the transverse stiffener 5 in the two-way hollow pipe component 4 reinforcing bar 10, steel mesh reinforcement 11, gauze wire cloth 12, fiber, fleece that strengthens usefulness or the combination that both are above, dew muscle 13, dew net 14 that above-mentioned muscle, net can reveal behind muscle 13, dew net 14 or the spreading stretch in the cast-in-situ reinforced concrete, reinforcing bar perhaps first and in the cast-in-situ reinforced concrete is connected, pour concrete firmly bonds and drawknot prefabrication transverse stiffening rib 5 and Cast-in-place concrete 3 and reinforcing bar 1,2 again.
5, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 4, it is characterized in that transverse stiffener 5 dew muscle 13, reveal net 14 and stretch into bright beam 28, dark beam 24, cast-in-place steel rib concrete longitudinal rib 6 and firmly be connected with the vertical presstressed reinforcing steel of two-way hollow pipe component 4 axis directions, constitute and the crisscross force structure of prestressed girder rib.
6, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 4, it is characterized in that there is sinking partial groove 15 or whole groove 15 week at transverse stiffener 5 positions in the two-way hollow pipe component 4 along pipe, Cast-in-place concrete stretches in two-way hollow pipe component 4 groove 15 outward, form the Cast-in-place concrete tenon or the Cast-in-place concrete fin that protrude, Cast-in-place concrete tenon or Cast-in-place concrete fin by interface agglutination or the dew muscle 13 that stretches out with transverse stiffener 5, reveal net 14 and be connected, with the superimposed transverse stiffener 5 of prefabrication transverse stiffening rib 5 formations in the two-way hollow pipe component 4.
7, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 6, it is characterized in that putting down at the bottom of two-way hollow pipe component member 4 pipe outer walls and the floor, cast-in-situ reinforced concrete bottom flange 8 was disconnected by two-way hollow pipe component 4 at 4 ends of two-way hollow pipe component, reinforcing bar 1 and Cast-in-place concrete 3 only pass the position of groove 15 of pipe stiffening rib 5 of two-way hollow pipe component 4 with two-way hollow pipe component both sides cast-in-situ reinforced concrete drawknot, constitute superimposed transverse stiffener 5, also can while arrangement prestress reinforcing bar 25 in the position of reinforcing bar 1.
8, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 4, the thickness, reinforcement ratio that it is characterized in that the horizontal prefabricated stiffening rib 5 in the two-way hollow pipe component 4 is bigger or identical at wall, dark beam limit, post limit, can be identical or diminishes in the hollowcore slab middle part.
9, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, it is characterized in that cassette ceiling beam limit, post limit, wall limit cast-in-place hollow concrete unit area reckon the actual amount after a discount the reckon the actual amount after a discount thickness of thickness more than or equal to concrete in the plate.
10,, it is characterized in that transverse stiffener 5 both sides can be provided with increase stiffening rib 5 rigidity of protrusion, the reinforcing rib 16 of intensity according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs.
11, a kind of in-situ deposited plate concrete roof with prefabricated combined hollow steel bar structure according to claim 10, it is characterized in that transverse stiffener 5 can be porose 17 or atresia, porose 17 formation plate muscle stiffening rib, pure muscle stiffening rib, plate hole stiffening rib, the formation plate stiffening rib of atresia, plate muscle stiffening rib.
12, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, it is characterized in that transverse stiffener 5 both sides are useful on the template 18 of stiffening rib 5 moulding in the pipe, template 18 is removed.
13, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, it is characterized in that transverse stiffener 5 both sides are useful on the template 18 of stiffening rib 5 moulding in the pipe, template 18 is not removed, template 18 of not tearing open and the superimposed stiffening rib of stiffening rib 5 common formations.
14, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 13, it is characterized in that described template 18 is prefabricated into one with body 4, constitute stiffening rib 5 forming mould chambeies 19, and on the body 4 of the empty die cavity 19 between two templates 18, have the hole, by pouring into concrete or steel bar concrete, constitute superimposed stiffening rib with two templates 18.
15, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, it is characterized in that transverse stiffener 5, protruding expose the pipe 4 outer walls, can reveal it on muscle 13, dew net 14 stretch into Cast-in-place concrete 3, by being connected with reinforcing bar, form superimposed transverse stiffener 5 with Cast-in-place concrete is glued.
16, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, it is characterized in that two-way hollow pipe component 4 two ends can be two plugs 22, also can be two stiffening ribs 5, can an end be stiffening rib 5 also, and the other end is a plug 22.
17, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, the cross section that it is characterized in that two-way hollow pipe component 4 its radial dimension along its length is that equate or variable.
18, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, it is characterized in that two-way hollow pipe component 4 has anti-floating stationary positioned structure 20, they are hook reinforcing bar, lacing wire or draw ring.
19,, it is characterized in that two-way hollow pipe component 4 can arrange two-layer, three layers or multilayer up and down according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs.
20,, it is characterized in that two-way hollow pipe component 4 is arranged vertically mutually in cassette ceiling according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs.
21,, it is characterized in that not having the cap of protrusion at the hollowcore slab lower prop on post limit according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs.
22, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, it is characterized in that the body of two-way hollow pipe component 4 and transverse stiffener 5 are same materials, or different materials.
23, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 22, the body that it is characterized in that two-way hollow pipe component 4 are Cement fibre pipe, Cement fibre stringing, cement mortar fibre pipe, metal bellows, plastic film capicitor, plastic pipe, metal tube, cement steel wire webmaster, cement mortar steel wire tube, asbestos cement pipe or resin fibre pipe.
24, a kind of in-situ deposited plate concrete roof with prefabricated combined hollow steel bar structure according to claim 22 is characterized in that transverse stiffener 5 can be steel bar concrete, fiber concrete, fibre mortar, polymer mortar or prestressing force frame.
25, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 22, when it is characterized in that transverse stiffener 5 for steel bar concrete or plain concrete, its proportioning of concrete is cement 20-35%, sand 30-60%, silica flour 1-5%, stone 40-70%, UEA expansion agent 8-15%, FDN high efficiency water reducing agent 0.8-1.2%, fiber 0.01-1%, early strength admixture 1-3%.
26, a kind of in-situ deposited prefabricated combined hollow prestressed concrete roof according to claim 22, when it is characterized in that transverse stiffener 5 for the wire mesh mortar moulding, the mortar proportioning is cement 30-35%, silica flour 2-6%, sand 60%-80%, UEA expansion agent 8-12%, mix the efficient composite water-reducing agent 0.5-0.8% of SD outward, polypropylene emulsion 1-3%, early strength admixture 1-2%.
27, according to claim 1 or 2 described a kind of in-situ deposited prefabricated combined hollow prestressed concrete roofs, the hollow part 21 that it is characterized in that two-way hollow pipe component 4 is filling foamed plastics, expanded perlite, expanded vermiculite, foaming or aerated light concrete, rock wool, mineral wool etc. partly or entirely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011360461A CN1133784C (en) | 2001-09-30 | 2001-09-30 | In-situ deposited prefabricated combined hollow prestressed concrete roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011360461A CN1133784C (en) | 2001-09-30 | 2001-09-30 | In-situ deposited prefabricated combined hollow prestressed concrete roof |
Publications (2)
| Publication Number | Publication Date |
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| CN1337508A CN1337508A (en) | 2002-02-27 |
| CN1133784C true CN1133784C (en) | 2004-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011360461A Expired - Fee Related CN1133784C (en) | 2001-09-30 | 2001-09-30 | In-situ deposited prefabricated combined hollow prestressed concrete roof |
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| CN (1) | CN1133784C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002999A (en) * | 2010-10-26 | 2011-04-06 | 吴方伯 | Reinforced concrete superimposed hollow floor system |
| CN107700731A (en) * | 2017-09-28 | 2018-02-16 | 贵州皆盈科技开发有限公司 | A kind of precast assemble floor and construction method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245625A (en) * | 2002-12-22 | 2008-08-20 | 邱则有 | Cast-in-situ reinforced concrete floor |
| CN110965685A (en) * | 2019-11-26 | 2020-04-07 | 上海二十冶建设有限公司 | Construction method of prestressed thick plate hollow floor |
-
2001
- 2001-09-30 CN CNB011360461A patent/CN1133784C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002999A (en) * | 2010-10-26 | 2011-04-06 | 吴方伯 | Reinforced concrete superimposed hollow floor system |
| CN107700731A (en) * | 2017-09-28 | 2018-02-16 | 贵州皆盈科技开发有限公司 | A kind of precast assemble floor and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1337508A (en) | 2002-02-27 |
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