CN206457974U - A kind of prefabricated Cavity structural member of central island force type cavity building roof - Google Patents

Abstract

The utility model provides a kind of prefabricated Cavity structural member of central island force type cavity building roof, and the prefabricated cavity member includes armored concrete gate beam, armored concrete longitudinal rib beam and noggin piece；The prefabricated cavity member at least has two armored concrete longitudinal rib beams and some armored concrete gate beams；Steel plane grid is provided with two reinforcing bars above and below being provided with the every armored concrete gate beam, the every armored concrete longitudinal rib beam；It is fixedly connected between the steel plane grid and the reinforcing bar by bracket fixing device；At least one in the girt strip of the prefabricated cavity member reserves angle and does not pour into a mould concrete, and the noggin piece is arranged in the space between the armored concrete gate beam intersected in length and breadth and armored concrete longitudinal rib beam.The utility model can make full use of the advantage of factory industry, what the prefabricated Cavity structural member can solve the problem that existing system is present construct, environmental protection, matter weight, cost, work efficiency the problems such as；Transition and upgrade is carried out to existing assembled cavity building roof structure system, updated；With good economy and applicability.

Description

A kind of prefabricated Cavity structural member of central island force type cavity building roof

Technical field

The utility model is related to a kind of building industrialization system technology, and in particular to a kind of central island force type cavity The prefabricated Cavity structural member of superstructure.

Background technology

With the development of building engineering field technology, concrete cast-in-situ cavity building roof is obtained extensively in China's architectural engineering Using.The house demolition have building cover structure it is highly low, from heavy and light, concrete cast-in-situ amount and amount of reinforcement is few, the construction period is fast The features such as, used, be especially commonly utilized in big by more in the larger public building of China's span and residential housing In space, large span, the structure type of high Clearance requirement.Compared with traditional solid superstructure or prestressed concrete floors, cast-in-place cavity Superstructure has reduction floor height, span big, all from heavy and light, strong, heat-insulated anti-seismic performance, fire prevention and the good, good economy performance of sound insulation property etc. Many advantages.

It is most of to make Cavity structural member using mechanical mold system at present in cast-in-place concrete hollow building roof technical field, Mechanized production hollow floor is realized into pole；Solve filling weight, production, transport and obturator globality damaged The problem of.But, because plastic foam noggin piece is organic material, the joint portion of organic material and inorganic material is occurred in that again Position control accuracy is big, overall buoyancy increase and formation hollow floor is substantially solid, and this non-hollow-core construction influence is made For storage solar thermal energy and heat air delivery energy or formation ventilation shaft and the dark smoke controlling pipeline multifunctional and building energy conservation of fire-fighting The defect that integrated synthesis is utilized.

There is a kind of netted box component in related art, employ the netted box-shaped structure of combined type of mesh shape shell Part substitutes the hermetically sealed hollow cavity component of prior art or the solid Cavity structural member of polystyrene foam, overcomes existing hollow floor non- The defect that core-drawing pore-creating Cavity structural member is present.But, this netted box component of combined type is being used as cast-in-situ hollow building roof During filler, because member exterior housing is metal grill, penetrated into so having the concrete mortar poured by mesh In netted combination Cavity structural member, the filling effect of component is reduced, the waste of concrete material is also result in construction, in addition The pressure of construction loads and top flange concrete is still suffered from a particular application, it is necessary to making substantial amounts of support and port in case Closure, making supporter using steel pipe needs internal a large amount of structures to combine, using envelope of the similar steel Web materials as port When stifled, binding site needs substantial amounts of welding, and combination difficulty is larger.

The defect existed based on above-mentioned prior art, the utility model patent of the applicant's earlier application A kind of netted box-shaped cavity structure of special type closing in for the built-in filling of cast-in-situ hollow building roof being related in CN201620167454.2 Part, cast-in-situ hollow building roof hole creating technology is realized using close up netted box component of the special type, is changed steel lattice shape and is not allowed coagulation Soil sand slurry penetrates into steel mesh, buoyancy is not produced, good with concrete blending, overcomes the defect of existing hollow floor technology presence.So And, this extraordinary closing in net is in manufacturing process, using constriction plate preparation method so that expend sheet material amount greatly, and then causes the special type Close up netted box-shaped Cavity structural member manufacturing cost increase.

In view of the preset component of filling of the prior art has many defects above, therefore, developing one kind has existing skill The comprehensive function feature of art makes the hollow floor implement the good built-in noggin piece of overall performance, can make full use of coagulation Native surface tension, change steel latticed structures do not allow concrete mortar to penetrate into steel mesh, enhancing structure carrying good with concrete blending Ability bears the construction loads on frame top and the normal pressure of top flange concrete, realizes the industrialized production of netted box-type member, gram Take prior art and there is a large amount of supports and the high defect of framework closure trouble, cost inside framework, break through cast-in-situ hollow building roof and show There is technology, have become the technical problem that cast-in-situ hollow building roof technical field is badly in need of solving.

It is that housing industrialization is layed foundation simultaneously in view of country carries out steel construction strategy and carries out assembled architecture at this stage, No matter how to extend and update from the connotation and extension of building, it is all relevant with architectural structure system；Using multi-functional, economy, Scientific and technological content, energy-conserving and environment-protective and the market demand is big, safety coefficient is high, meet building for national industrial policies and industrial development direction again Building structure system.Therefore, on the basis of the existing background technology of applicant, prior art is subjected to perfect, upgrading, integrated application is arrived In housing industrialization, by cast-in-place cavity building roof Technology Difficulties problem factory industry neutralizing determine, shape, lattice of establish rules, surely assemble position, Prefabricated member is quantitatively produced, the mode that structure is integrally forced through cast-in-place concrete is handled, and industrialized production is prefabricated Assembled Cavity structural member combines with cast-in-site armored concrete.Therefore, develop a kind of comprehensive with prior art The good prefabricated Cavity structural member of central island force type cavity building roof of the overall performance of functional characteristics is closed, is made in cavity building roof Portion can make full use of concrete surface tension force, good with concrete blending, enhancing structure bearing capacity, bottom hanging ability By force, realize industrialized production, be the great breakthrough for realizing prefabricated assembled frame-shear-wall structure system new technology, into The urgent need innovated for assembled architecture technical field.

The content of the invention

The purpose of this utility model is to promote assembled architecture process, a kind of central island force type cavity building roof assembling Formula prefabricated cavity member, improves available frame shear wall structure system and framework core wall structure system；Make full use of factory's work The advantage of industry, produces assembled cavity floor, solve that existing system is present construct, environmental protection, matter weight, cost, work efficiency etc. are asked Topic；The mode that building structure is integrally forced through cast-in-site armored concrete is solved, industrialized production cavity prefabricated components Combined with cast-in-site armored concrete, optimization available frame shear wall structure system technology is reached, to existing dress Transition and upgrade is carried out with formula frame-shear-wall structure system system, is updated.

The technical solution of the utility model is as follows, and a kind of central island force type cavity building roof is with prefabricated cavity structure Part, the prefabricated cavity member includes armored concrete gate beam, armored concrete longitudinal rib beam and noggin piece；The prefabricated sky Chamber component at least has two armored concrete longitudinal rib beams and some armored concrete gate beams；The every armored concrete Steel plane grid is provided with two reinforcing bars above and below being provided with gate beam, the every armored concrete longitudinal rib beam；The steel It is fixedly connected between plane grid and the reinforcing bar by bracket fixing device；In the girt strip of the prefabricated cavity member extremely Concrete is not poured into a mould in a rare reserved angle；The armored concrete gate beam upper surface of the prefabricated cavity member is provided with some Root reinforced steel bar ring；The noggin piece is arranged between the armored concrete gate beam intersected in length and breadth and armored concrete longitudinal rib beam In space；The noggin piece has the base for being set to high-strength concrete layer；The top surface of the noggin piece is described pre- The upper surface of Cavity structural member processed is exposed, top surface and the armored concrete cross rib of the exposed noggin piece of the prefabricated cavity member The upper surface of beam and armored concrete longitudinal rib beam keeps same level；The base lower surface of the noggin piece is used as prefabricated sky A part for the lower surface of chamber component in the lower surface of prefabricated cavity member so as to expose.

It is preferred that, the steel plane grid has two web members up and down, and stirrup is welded between two web members；Institute Stating bracket fixing device includes screw rod and fixedly connected part, and the fixedly connected part is comprising arcuate body and is arranged at arcuate body The through hole for connecting screw rod, the arcuate body axle are machined with openend and symmetrically arranged connecting plate, the connecting plate Array is provided with two groups of connecting plates, horizontal axis hole is offered between connecting plate on the side wall of the arcuate body；Institute Stating arcuate body is used to install reinforcing bar, and the horizontal axis hole is used for the web member for installing steel plane grid.

It is preferred that, the prefabricated cavity member also has armored concrete top flange plate, the armored concrete top flange Plate, which is located in the top of the noggin piece, the armored concrete top flange plate, is provided with bar-mat reinforcement；The noggin piece Top surface is combined with each other with the armored concrete top flange plate.

It is preferred that, the noggin piece is that the steel plate with high-strength concrete layer base expands net cage Cavity structural member；It is described Steel plate expansion net cage Cavity structural member includes steel plate expansion web, side sealing plate, support member and base, wherein being expanded by two blocks of steel plates Combination of throwing the net forms the member body that the steel plate with case top surface, two case body sides and bottom face expands net cage Cavity structural member, The member body is combined by two pieces of steel plate expansion webs and formed, one of steel plate expansion net folding be made as being formed case top surface and First U-shaped polyhedron of two upper sides, another piece of steel plate expansion web is folded into the 2nd U to form bottom face and two downsides Welding or colligation side is respectively adopted in two upper sides and downside by two reverse relative combinations of U-shaped polyhedron by shape polyhedron Formula is fixed together to form the member body；The side sealing plate seals the two ends of the member body, described Support member forms support frame in the closing space that steel plate expansion web and side sealing plate are enclosed；The member body position In the submounts, the base is the high-strength concrete layer being combined together with the bottom face of the member body, described The size of base is identical with the size in the bottom face of the member body, and the thickness of the base is 20-30mm；It is described high-strength mixed Steel mesh piece is also equipped with solidifying soil layer, the steel mesh piece stretches out from four sides of base, and extension elongation is 50-150mm.

It is preferred that, the steel plate expansion web includes raised V-arrangement reinforcement and steel mesh face two parts, and described V-arrangement is strengthened Muscle and the spaced and parallel arrangement in steel mesh face, are V-arrangement reinforcement, the height of the V-arrangement reinforcement at the two ends of the steel plate expansion web H1 is 4-6mm；Described steel mesh face includes steel plate expansion mesh and turns to connection strap；The steering connection strap is located at adjacent two Steel mesh face center between V-arrangement reinforcement, the steering connection strap be arranged in parallel with V-arrangement reinforcement, strengthens per adjacent two V-arrangements Six row steel plates are set to expand mesh between muscle, the steering connection strap both sides respectively there are three row steel plates to expand mesh, positioned at the company of steering The direction of the three row steel plates expansion mesh of narrow bars side is identical, and the steel plate positioned at the steering connection strap both sides expands mesh Direction is different；The support member and side sealing plate are by steel plate expansion web, extraordinary closing in net, zinc-coated wire mesh sheet, silicon with holes Calcium plate, plastic cement microwell plate or plasterboard are made.

It is preferred that, the thickness of the base of the steel plate expansion net cage Cavity structural member is 20-30mm, the high-strength concrete layer In the extension elongation stretched out from four sides of base of steel mesh piece be 50mm；The thickness H2 of the steel plate expansion web is 0.35mm, spacing L1 of the adjacent two V-arrangement reinforcements in steel mesh face are 60mm, and the width L2 of each column steel plate expansion mesh is 8.5mm；Steel plate expansion mesh is shaped as parallelogram, the distance between two short sides of parallelogram L3 For 7.6mm, the distance between two long sides L4 is 3.11mm, and the steel wire hem width degree L5 of each steel plate expansion mesh is 0.75mm； The height H1 of the V-arrangement reinforcement is 4.2mm, and width L6 is 7mm, and top arc radius R is 1.5mm；The steel plate expansion web Width be 600mm, the quantity of the V-arrangement reinforcement is 11.

It is preferred that, the reserved angle surface product for not pouring into a mould concrete parts in the prefabricated cavity member is not less than 0.25 square Rice.

It is preferred that, the adjacent both sides filling of connection armored concrete gate beam is provided with the armored concrete gate beam The through hole of component；Diameter is provided with not less than 100mm on the side sealing plate of the steel plate expansion net cage Cavity structural member Hole；The sleeve pipe or pipeline of forceful electric power or light current circuit are preset with the prefabricated cavity member.

It is preferred that, the member body of steel plate expansion net cage Cavity structural member by steel plate expansion web is equivalent when being formed in case The rotation angle position of bottom surface and two case body sides is provided with construction inclined-plane.

It is preferred that, the armored concrete top flange plate uses light foaming concrete；In the armored concrete upper limb The upper surface of listrium also has a floor height reinforced concrete layer.

The utility model has the advantages that compared with prior art：

The prefabricated Cavity structural member of central island force type cavity building roof that the utility model is provided, span is big, weight Gently, sound insulation, good heat-insulation effect, reliability of structure, shock resistance, crack resistance are also preferable.The utility model has good economical Good facilitation is played in property and applicability, the development to Building technology.

Brief description of the drawings

Fig. 1 is that a kind of central island force type cavity building roof of the present utility model is shown with the section of prefabricated Cavity structural member It is intended to；

Fig. 2 is a kind of central island force type cavity building roof of the present utility model with prefabricated Cavity structural member composite pouring Assembled cavity building roof；

Fig. 3 is a kind of central island force type cavity building roof of the present utility model with prefabricated Cavity structural member plan；

Fig. 4 is the structural representation of the steel bar girder structure in prefabricated Cavity structural member of the present utility model；

Fig. 5 is the partial enlarged drawing of portion P in Fig. 4；

Fig. 6 is the structural representation for the fixedly connected part that the utility model is provided；

Fig. 7 is A-A profiles in Fig. 4；

Fig. 8 is the cross-sectional view of the steel plate expansion net cage Cavity structural member employed in the utility model；

Fig. 9 is the first U-shaped polyhedron and the second U-shaped polyhedron group that steel plate of the present utility model expands net cage Cavity structural member Close the schematic diagram for forming member body；

Figure 10 is the top view that steel plate of the present utility model expands net cage Cavity structural member；

Figure 11 is the structural representation that steel plate of the present utility model expands net cage Cavity structural member；

Figure 12 is expanded the structural representation for the steel plate expansion web that net cage Cavity structural member is used by steel plate of the present utility model；

The steel plate expansion web that Figure 13 is used by the steel plate of the present utility model expansion net cage Cavity structural member provided in Figure 12 Structural representation side view；

Figure 14 and Figure 15 are respectively the magnified partial view in Figure 12 and Figure 13.

In figure, 1- member bodies, 2- bottoms face, 3- casees body side, 4- case top surfaces, 5- reinforcing bars；6- steel plane grids；7- consolidates Determine connector；8- screw rods；9- attaching nut；10- concrete；11- bar-mat reinforcements；Seal plate, 13- support members, 14- in 12- sides Bending edges, 15- the first U-shaped polyhedrons；16- the second U-shaped polyhedrons；17- upper sides；18- downsides；19- connecting portions；20- leads to Air holes；21- strip holes；22- strip bulges；23- bases；24- steel mesh pieces；111- pillars；112- post reinforcing bars；121- girders Mould；122- girder reinforcing bars；131- prefabricated cavity members；132- steel plates expand net cage Cavity structural member；141- armored concrete longitudinal ribs Beam；142- armored concrete gate beams；150- reserves angle；160 center stressed islands；170- armored concrete top flange plates；180- Reinforcing steel bar；181- straight through tube；201-V shape reinforcements；202- steel meshes face；203- steel plates expand mesh；204- turns to connection Bar；205- steel wires side；61- web members；62- stirrups；63- transverse direction axis holes；71- arcuate bodies；72- connecting plates.

Embodiment

Below in conjunction with the accompanying drawing in the utility model, the technical solution of the utility model is clearly and completely retouched State.

Fig. 1 is that a kind of central island force type cavity building roof of the present utility model is shown with the section of prefabricated Cavity structural member It is intended to；Fig. 2 is the assembling of the prefabricated Cavity structural member composite pouring of central island force type cavity building roof of the present utility model Formula cavity building roof；Fig. 3 is central island force type cavity building roof of the present utility model with prefabricated Cavity structural member plan.Such as Shown in Fig. 1-3, the prefabricated Cavity structural member of central island force type cavity building roof provided by the utility model is described prefabricated Cavity structural member 131 includes armored concrete gate beam 142, armored concrete longitudinal rib beam 141 and noggin piece；The prefabricated hollow Component 131 at least has two armored concrete longitudinal rib beams 141 and some armored concrete gate beams 142；The every steel Steel is provided with two reinforcing bars 5 above and below being provided with reinforced concrete gate beam 142, the every armored concrete longitudinal rib beam 141 The reinforcing bar 5 and steel plane net set in plane grid 6, the armored concrete gate beam 142 and armored concrete longitudinal rib beam 141 The two ends of frame 6 are protruding；At least one in the girt strip of the prefabricated cavity member 131 reserves angle 150 and does not pour into a mould concrete； The upper surface of armored concrete gate beam 142 of the prefabricated Cavity structural member is provided with some reinforced steel bar rings (in accompanying drawing not Show)；It is fixedly connected between the steel plane grid 6 and the reinforcing bar 5 by bracket fixing device；The noggin piece It is arranged in the space between the armored concrete gate beam 142 intersected in length and breadth and armored concrete longitudinal rib beam 141.The filling Component has the base for being set to high-strength concrete layer；The top surface of the noggin piece is in the prefabricated cavity member 131 Upper surface is exposed, top surface and armored concrete gate beam 142 and the steel of the exposed noggin piece of the prefabricated cavity member 131 The upper surface of reinforced concrete longitudinal rib beam 141 keeps same level；The base lower surface of the noggin piece is used as prefabricated hollow A part for the lower surface of component 131 in the lower surface of prefabricated cavity member so as to expose.

As a kind of embodiment of the present utility model, the prefabricated cavity member 131 also has armored concrete Top flange plate 170, the armored concrete top flange plate 170 is located on the top of the noggin piece, the armored concrete Bar-mat reinforcement 11 is provided with flange plate 170；The top surface of the noggin piece is combined with the armored concrete top flange plate 170 Together.

The utility model is the prefabricated Cavity structural member 131 produced in factory lines when implementing；It is prefabricated Concrete is not poured into a mould at the reserved angle 150 of Cavity structural member 131, and the girt strip reinforcing bar of armored concrete longitudinal rib beam 141 is reserved；It is made It is that assembled cavity floor 131 with the bed die system around track is gone into die-filling workshop and rib reinforcement and obturator car as program Between；Shuttering is equipped with bed die, the opening basis of specifications and models is framed needed for being formed, in the framed interior placement girt strip in opening basis Straight through tube 181 etc. between reinforcing bar, steel plate expansion net cage Cavity structural member 132, willow mouth mold, girt strip；Again by band around track bed die System goes to pouring hall.Computer is sent to mixing plant and added water after matching somebody with somebody automatically in cement, sand, stone ratio stirs into concrete, and it collapses Degree of falling is controlled within 200mm；Vibration on Start-up platform, pours into a mould the concrete of prefabricated Cavity structural member 131；Again will be with around rail The bed die system in road goes to steam curing system；Band is gone into finished product station around the bed die system of track, form removal obtains required Prefabricated cavity member；Warehouse for finished product is formulated to respectively to support eventually or stock；Band goes to initial position around the bed die system of track, enters Next flow state；Band is set around the bed die system of track, intersection dislocation operation is allowed for, efficiency is improved, by each Workshop is connected with endless track manner, and band speeds to surround track one week around the bed die system of track, illustrate one it is prefabricated The production of Cavity structural member 131 is completed.Handling is on girder mould 121, by the part steel plate expansion web of prefabricated Cavity structural member 131 Case Cavity structural member 132 and exposed rib reinforcement are embedded into girder reinforcing bar 122, carry out cast-in-site.When post and beam are shaped steel knot During structure, exposed rib reinforcement is directly welded on steel column and section steel beam；Prefabricated Cavity structural member 131 may be designed to unidirectionally Plate, two pieces of adjacent joint portions of assembled prefabricated cavity member 131 are arranged to Liu Kou；Combination is in building cavity building roof girder Carry out, with engineering mould by the colligation of girder reinforcing bar 122 on beam bottom board, reinforcement mould support, support meet construction loads It is required that；Prefabricated prefabricated cavity member 131 is lifted on beam bottom board, the prefabricated two ends of Cavity structural member 131 are exposed Girt strip reinforcing bar extend into girder reinforcing bar 122, adjust adjacent members interface flatness, in prefabricated Cavity structural member 131 Middle part increases coaxial support, and the girt strip reinforcing bar that colligation or welding are exposed will extend into the middle rib joist steel of girder reinforcing bar 122 cast-in-place Note is in reinforced concrete girder；In order to realize effective 4/1000 springing height, in the middle of prefabricated Cavity structural member 131 Coaxial support is taken, both facilitates arch camber, prefabricated Cavity structural member 131 is supported again；By post reinforcing bar 112, girder reinforcing bar 122nd, prefabricated Cavity structural member 131 two does not pour into a mould reserved angle 150 and reserves rib reinforcement and other colligations of reinforcing steel bar 180, The center stressed island 160 being combined into above the reinforcing bar of center stressed island 160, then cast-in-place concrete formation pillar 111 and entirety Armored concrete bottom wing listrium 170；Conserved, form removal so that the central island force type cavity building roof needed for obtain simultaneously is used The assembled cavity building roof of prefabricated Cavity structural member field combinations cast.

If as shown in figure 1, in the specific implementation will use solar heating function or fire-fighting smoke controlling function when, in girder The connected mode of the preceding serial or parallel connection of cast connects the through hole of prefabricated cavity member 131 by straight through tube 181 and equipment It is logical.

Fig. 4 is the structural representation of the steel bar girder structure in prefabricated Cavity structural member of the present utility model；It is described The steel set in armored concrete gate beam 142 and armored concrete longitudinal rib beam 141 that prefabricated Cavity structural member 131 includes Muscle 5 and steel plane grid 6 constitute the steel bar girder structure；The steel bar girder structure includes steel plane grid 6 and intersected The reinforcing bar 5 on steel plane grid 6 is located in, the reinforcing bar 5 is equipped with multiple, casting concrete shape in the longitudinal direction of steel plane grid 6 Into after cavity building roof, steel plane grid 6 is located in the armored concrete longitudinal rib beam 141, and reinforcing bar 5 is located at the armored concrete In gate beam 142.

It is the partial enlarged drawing of portion P in Fig. 4 referring concurrently to Fig. 5-7, Fig. 5, Fig. 6 is the fixed company that the utility model is provided The structural representation of fitting, Fig. 7 is A-A profiles in Fig. 4.Reinforcing bar 5 and steel plane grid 6 are consolidated by bracket fixing device Fixed connection, bracket fixing device can consolidate reinforcing bar 5 and steel plane grid 6.The bracket fixing device includes screw rod 8 and solid Determine connector 7 and attaching nut 9.The fixedly connected part 7 is comprising arcuate body 71 and is arranged at the openend of arcuate body 71 And symmetrically arranged connecting plate 72, the through hole for connecting screw rod 8, the axle of arcuate body 71 are machined with the connecting plate 72 Array is provided with the connecting plate 72 no less than two groups, offered in the side wall of arcuate body 71 and between connecting plate 72 In horizontal axis hole 63, the present embodiment, the connecting plate 72 is two groups, and horizontal axis hole 63 is one group.When connecting plate 72 is provided with three During group, horizontal axis hole 63 is that two groups, i.e. steel plane grid 6 are arranged with two in parallel, the like.The arcuate body 71 is used for Reinforcing bar 5 is installed, horizontal axis hole 63 is used for the web member 61 for installing steel plane grid 6, and connecting plate 72 is arranged on screw rod 8 and locked Tightly, and then by reinforcing bar 5 and steel plane grid 6 consolidate.

As shown in fig. 7, the web member 61 of the steel plane grid 6 there are two, stirrup 62 is welded between the web member 61. The reinforcing bar 5 includes a upper reinforcing bar and a next reinforcing bar, in the upper reinforcing bar and the next reinforcing bar and steel plane net The staggered place of web member 61 of frame 6 is provided with fixedly connected part 7, and the fixedly connected part 7 is set relatively up and down.It is underlying solid The connecting plate 72 for determining connector 7 rides upon on attaching nut 9 and vertical to positioning, then the next reinforcing bar is carried out from attaching nut 9 Vertically fixed to position, the web member 61 of the downside of steel plane grid 6 is overlapped on the next reinforcing bar, abdomen of the upper bar splicing in upside On bar.Upper reinforcing bar and the web member of upside are consolidated by the fixedly connected part 7 of top.

Fig. 8 is the cross-sectional view of the steel plate expansion net cage Cavity structural member employed in the utility model；The steel Plate expansion net cage Cavity structural member 132 includes steel plate expansion web, support member 13, side sealing plate 12 and base 23, wherein by two Block steel plate expansion web combines to form the steel plate expansion net cage Cavity structural member with case top surface 4, two case body sides 3 and bottom face 2 132 member body 1；It need to determine when combined steel plate expansion net cage Cavity structural member 132 is suppressed with the vertical direction of steel plate expansion web Measure the bending edges 14 of bending part.When pouring cavity building roof using the filling of steel plate expansion net cage Cavity structural member 132, can and superstructure Middle reinforcing bar or the concrete poured are effectively connected, so as to be further ensured that steel plate expansion net cage Cavity structural member 132 exists Bonding strength in cavity building roof, it is ensured that connect having poured concrete steel plate expansion net cage Cavity structural member 132 after template of dismantling Connect closely knit jail figure.

Fig. 9 is the first U-shaped polyhedron and the second U-shaped polyhedron group that steel plate of the present utility model expands net cage Cavity structural member Close the schematic diagram for forming member body；As shown in Figure 8 and Figure 9, the member body 1 is combined by two pieces of steel plate expansion webs and forms tool There are the member body 1 of the steel plate expansion net cage Cavity structural member 132 of case top surface 4, two case body sides 3 and bottom face 2, the component Main body 1 is combined by two pieces of steel plate expansion webs and formed, and one of steel plate expansion net folding is made as forming case top surface 4 and two First U-shaped polyhedron 15 of individual upper side 17, another piece of steel plate expansion web is folded into form bottom face 2 and two downsides 18 Weldering is respectively adopted in two upper sides 17 and downside 18 by two reverse relative combinations of U-shaped polyhedron by the second U-shaped polyhedron 16 Connect or improving bud grafting is fixed together to form two case body sides 3, so as to constitute with case top surface 4, two case body sides The member body 1 in face 3 and bottom face 2.Fig. 9 is the first U-shaped multiaspect that steel plate of the present utility model expands net cage Cavity structural member 132 The U-shaped polyhedron 16 of body 15 and second combines the schematic diagram for forming member body 1；Case body side 3 is overlapped by two pieces of steel plate expansion webs Composition, this structure equally also constitutes the sub-surface reinforcement of case body side 3, and the amount of lap of connecting portion 19 is less than or equal to upside Face 17 or the length of downside 18.

Two pieces of steel plate expansion webs collectively form after the member body 1 of steel plate expansion net cage Cavity structural member 132, add Seal plate 12 for two pieces of sides, and side sealing plate 12 seals the two ends of described member body 1, that is, constitutes steel plate expansion web The complete hexahedron structure of case Cavity structural member 132.

Steel plate expansion net cage Cavity structural member 132 also has base 23, and the member body 1 is located on the base 23 Face, the base 23 is the high-strength concrete layer being combined together with the bottom face 2 of the member body 1, the base 23 Size is identical with the size in the bottom face 2, and the thickness of the base 23 is 20-50mm；Also match somebody with somebody in the high-strength concrete layer There is steel mesh piece 24, the steel mesh piece 24 stretches out from four sides of base 23, and extension elongation is 50-150mm.On base 23 Set using the steel mesh piece 24 stretched out, the steel plate can be made to expand net cage Cavity structural member 132 when filling pours hollow floor, energy Reinforcing bar in the middle of enough and superstructure or the concrete poured are effectively connected, so as to be further ensured that steel plate expansion net cage cavity structure Bonding strength of the part 132 in hollow floor, it is ensured that dismantled steel plate expansion net cage cavity structure after template having poured concrete Part 132 connects closely knit firm, will not drop.

When steel plate expansion net cage Cavity structural member 132 is filled in the concrete of prefabricated cavity member 131, the steel The base lower surface of plate expansion net cage Cavity structural member 132 is as a part for the lower surface of prefabricated cavity member 131 so as to pre- Expose in the lower surface of Cavity structural member 131 processed.The thickness being combined together with the bottom face 2 of member body 1 of base 23 reaches 20- 50mm high-strength concrete layer can greatly improve the hanging ability of member bottom section, it is ensured that solid on the superstructure after the completion of construction Determine the firmness of light fixture and other objects.

Figure 10 is the top view that steel plate of the present utility model expands net cage Cavity structural member 132；It can be seen that the steel plate in figure Two formation support frames of support member 13 are employed in expansion net cage Cavity structural member 132., can basis in practical engineering application The execution conditions at scene and specific needs, flexibly set the quantity of support member 13.Also steel plate expansion web is show but in the figure On V-type reinforcement.The support member 13 forms branch in the closing space that member body 1 and side sealing plate 12 are enclosed Support bone frame.

As shown in figure 11, the periphery of plate 12 is sealed in steel plate expansion web in the side in steel plate expansion net cage Cavity structural member 132 Combined in the V-type reinforcement 201 at edge, while support member 13 and side sealing plate 12 are also connected and fixed, can be very Good secures the displacement that plate 12 is sealed in side, side is sealed plate 12 while can also supporting steel plate expansion net cage cavity Deformation during 132 surrounding stress of component；When pouring into a mould concrete, it is unlikely to make side seal plate 12 by concrete lateral pressure Influence, causes side to seal plate 12 toward component intrinsic displacement.In the present embodiment, side sealing plate 12 and support member 13 can , can also be same to be made up of zinc-coated wire mesh sheet or extraordinary closing in net or calcium silicate board with microporous or plastic plate or plasterboard or corrugated board It is made up of steel plate expansion web.The inner top surface of net cage Cavity structural member 132, interior bottom table are expanded with steel plate in 13 two sides of support member respectively Face is engaged, and the two ends of support member 13 are engaged with side sealing plate 12.When using calcium silicate board with microporous or plastic plate or plasterboard or watt It is pre- in the two ends of support member 13 in order to prevent support member 13 from toppling over when side sealing plate 12 and support member 13 is made in corrugated paper board Several strip bulges 22 are made, the prefabricated equal number of strip hole 21 in relevant position in sealing plate 12 in side, bar shaped The width of hole 21 is more than the thickness of slab of support member 22, facilitates the partial insertion bar hole of strip bulge 22 that the two ends of support member 13 are prefabricated In hole 21, the thin plate that side sealing plate 12 is used can play a supporting role, and be the effect for playing closure Cavity structural member again.When When side sealing plate 12 and support member 13 is made using zinc-coated wire mesh sheet or steel plate expansion web, support member 13 and top table in case Connection between face, inner bottom surface and side sealing plate 12 can be carried out using welding or improving bud grafting.In side sealing The air vent 20 that diameter is not less than 100mm is provided with plate 12.In assembling process, steel plate expansion web head and the tail overlapping part At Cavity structural member body side surface, amount of lap is less than the surface area of Cavity structural member case body side 3, by support member 13 and side After sealing plate 12 is in place, the V-arrangement reinforcement 201 of steel plate expansion web is overlapped to position colligation from beginning to end and fixed or in welding knot Welded at chalaza.

In all embodiments, if hollow floor need to be used as dark air delivery duct function, first in side before assembling The air vent 20 for lingering on adapter is bored in the middle of edge sealing plate 12.

As another embodiment, the member body 1 of the steel plate expansion net cage Cavity structural member 132 expands by steel plate The rotation angle position converted into when being formed in bottom face 2 and two case bodies sides 3 of throwing the net is provided with construction inclined-plane.

Figure 12 is expanded the structural representation for the steel plate expansion web that net cage Cavity structural member 132 is used by steel plate of the present utility model Figure；As illustrated, the steel plate expansion web includes raised V-arrangement reinforcement 201 and the two parts of steel mesh face 202, described V-arrangement adds Strengthening tendons 201 and the spaced and parallel arrangement in steel mesh face 202, are V-arrangement reinforcement 201, described steel at the two ends of the steel plate expansion web Wire side 202 includes steel plate expansion mesh 203 and turns to connection strap 204；The steering connection strap 204 is located at adjacent two V-arrangements and added Steel mesh face center between strengthening tendons 201, the steering connection strap 204 be arranged in parallel with V-arrangement reinforcement 201, per adjacent two V-arrangements Six row steel plates are set to expand mesh 203 between reinforcement 201, steering connection strap 204 both sides respectively there are three row steel plate expansion webs Hole 203, the direction positioned at the three row steel plates expansion mesh for turning to the side of connection strap 204 is identical, and positioned at the steering connection strap The steel plate on both sides expands mesh 203 not in same direction, that is, forms " people " font of the axis centered on turning to connection strap 204 Structure.

Continuous V-type reinforcement 201 arranged in parallel is the main source of intensity in the steel plate expansion web.Steel mesh face 202 It is upper to expand mesh 203 with neat steel plate, the work(with the combination between the concrete material for strengthening steel plate expansion web and cast Energy.

Expansion web present in prior art, the direction of adjacent two row steel plate expansion mesh is different, easily causes pouring When concrete penetrate into casing.And the steel plate expansion web that the application is provided, wherein adjacent three row steel plates expansion mesh Direction is identical, it is to avoid when pouring girt strip concrete, the refluence of casing side concrete, turns to connection strap side and is set to equally Mesh direction make it that the combination of concrete and mesh can be more preferable, the fluency poured more preferably, considerably reduces and enters casing Interior amount of concrete, reduces loss.

Figure 13-15 show respectively the steel plate expansion web that steel plate expansion net cage Cavity structural member of the present utility model is used Specific features；Area on the steel mesh face 202 shared by each steel plate expansion mesh 203 is less than 40mm²；The steel plate expansion The thickness H2 of net is 0.35mm, and the height H1 of the V-arrangement reinforcement is 4-6mm, and adjacent two V-arrangement reinforcements are in steel mesh face Spacing L1 is 60mm, and the width L2 of each column steel plate expansion mesh is 8.5mm；

In production practices, by the multiple many experiments of inventor and creative research, by described V-arrangement reinforcement Height H1 be 4.2mm, width L6 be 7mm, top arc radius R be 1.5mm.Being shaped as the steel plate expansion mesh is parallel Quadrangle, the distance between two short sides of parallelogram L3 is 7.6mm, and the distance between two long sides L4 is 3.11mm, the steel wire hem width degree L5 of each steel plate expansion mesh is 0.75mm.In addition, the width of the steel plate expansion web is 600mm, the quantity of the V-arrangement reinforcement is 11.Compression strength can be significantly increased.

The V-arrangement reinforcement 201 of the steel plate expansion web and steel mesh face 202 the rushing in special purpose machinery by same sheet metal Cut and expand making shaping；The steel plate expansion regular change of its grid direction of mesh 203 on the steel mesh face 202；The V Bending trace is suppressed with the vertical direction of shape reinforcement 201；The crowning of the V-arrangement reinforcement 201 is in box Cavity structural member Outer surface.

The steel plate expansion web is will to utilize the special mechanical equipments such as feeding machine, bicker system, augmentation system, cutter Make steel plate dictyosome and suppress bending trace, at the construction field (site) by bending tool, by bending connects to form structure one by one at bending trace Part main body.

In practical engineering application, factory according to can according to the length of case top surface 4, the height of two case bodies sides 3 and Steel plate expansion web length needed for the length cutting of overlapping connecting portion 19, is pressed at the two ends corresponding length of required steel plate expansion web Two bending traces.Then will wherein be used for formed the second U-shaped polyhedron 16 steel plate expansion web mutually be applied to form the structure The steel plate expansion web position in the bottom face 2 of part main body, is combined with high-strength concrete, is formed high-strength concrete layer and is expanded as steel plate The base 23 of net cage Cavity structural member 132, when pouring into a mould high-strength concrete, the insertion steel mesh piece 24 in high-strength concrete layer.By steel Plate expansion web suppresses bending trace, after side sealing plate and support member are packed respectively, according to steel plate expansion web and high-strength coagulation Steel plate expansion web, side sealing plate after soil combination, the usage ratio of support member are transported to job site and carry out Assembling； When then assembling at the scene, it will wherein be used to forming the polyhedral steel plate expansion web bending of the first U-shaped and be fabricated to the first U-shaped multiaspect Body 15, by for formed the second U-shaped it is polyhedral and with high-strength concrete combine to form high-strength concrete layer steel Plate expansion web is converted into the second U-shaped polyhedron 16, by two reverse relative combinations of U-shaped polyhedron by two when assembling at the scene Sideways 17 with downside 18 be respectively adopted welding or improving bud grafting be fixed together, then with side seal plate 12 and branch Support member 13 is fixed together to form steel plate expansion net cage Cavity structural member 132.

The armored concrete top flange plate uses light foaming concrete；In the upper of the armored concrete top flange plate Surface also has a floor height reinforced concrete layer.

The light foaming concrete that the armored concrete top flange plate is used can use prior art patent Method disclosed in the documents such as ZL200510047439.0, ZL200810172514.X is processed making.

It is preferred that, the new preparation method that the utility model provides a kind of light foaming concrete is as follows：

Using cement water reducing agent, cement mortar was configured as fluidity at 5 to 10 seconds 0.40 to 0.45 according to the ratio of mud Big mobility liquid grout, when the fluidity of cement mortar decays to 15 to 30 seconds, cement mortar is circulated into enclosed high pressure Tank, and pressure-air is injected into tank, then air-pressure controlling will incorporate the cement mortar note of pressure-air in 0.5~5Mpa Enter among mould, you can light foaming concrete is made.The hair that the technique for the foamed concrete that the utility model is provided is made Bubble concrete strength is higher than the foam concrete that common physical blowing method is made, the foam coagulation that density is made with chemical blowing It is native suitable.

Preparation method preferably to illustrate light foaming concrete of the present utility model, implements concrete technology step such as Under：

(1) cement is configured, and is made as cement mortar；It is to be matched somebody with somebody using high performance water reducer first in present embodiment The ratio of mud is put in 0.42, cement mortar of the fluidity at 8 seconds.

(2) in cement mortar hydration process, i.e., colloid substance is formed on cement mortar surface, and with certain surface tension When, cement mortar is infused in high-pressure closed vessel.And in present embodiment, high-pressure closed vessel is infused in cement mortar Before interior, the fluidity attenuation of cement mortar is first detected, when the fluidity of cement mortar decays to 25 seconds, high densification is reinjected Close in container.

(3) pressure-air is injected into high-pressure closed vessel, pressure preset pressure is added to, pressure is in 2.5Mpa；In pressure Under power effect, air is dissolved in cement mortar, makes pressure-air and cement mortar well mixed；

(4) after pressure-air and cement mortar are well mixed, about 8 to 15 minutes, the cement mortar for being mixed with pressure-air is noted Enter in the template of closing and be molded, cement mortar reduces due to interior pressure, air expands and many volume sizes are formed in cement mortar Impartial steam bubble, and directly form foamed concrete；Form removal after cement final set, is then placed within normal temperature and pressure maintenance.

Unit weight is in 150Kg/m3-300Kg/m3 after examining and drying for the foamed concrete that the utility model makes, and intensity exists 1.0MPa to 2.0Mpa；Heat conduction K values (thermal conductivity factor) are 0.05-0.08.

The high-strength concrete used in high-strength concrete layer in the utility model is the high-strength coagulation that building field is commonly used Soil.

It is preferred that, it would however also be possible to employ special high-strength concrete, it is made up of the raw material of following percentage by weight：Silicate Cement 10~15%；Miberal powder 8~12%；Flyash 6~10%；Silicon ash 2~6%；Haydite 20~30%；Pottery sand 25~35%； High-performance water reducing agent 0.2~0.8%；Exciting agent 0.05-0.3%；Tackifier 0.05-0.8%；Water 8~12%.Wherein, it is described Miberal powder is the miberal powder by superfine grinding, and its specific surface area is 650m²/kg；The flyash is I grades of flyash, its 45um sieves Surplus is 7%；The silicon ash is SiO₂Content is that 94%, specific surface area is 25000m²/ kg silicon ash；The haydite is broken stone type Haydites of book structure, its density rating 800, particle diameter is in 5-20mm, and cylindrical compress strength is 6.9Mpa；The bulk density 630kg/ of the pottery sand m³, apparent density 1390kg/m³；The high-performance water reducing agent is polyocarboxy acid type high-performance water reducing agent；The exciting agent is three ethanol One or more in amine, diethanol amine, triisopropanolamine, sodium sulphate, sodium metasilicate, prodan；The tackifier are hydroxyl first One or several kinds in base cellulose ether, polyacrylamide, polyacrylic acid.

It is preferred that there is provided the preparation component of another high-strength concrete, be according to every cube of component：52.5 level ordinary silicon Acid salt cement 400-420kg, phosphorus slag powder 72kg, I grades of flyash 72-90kg, silicon ash 36-48kg, river sand 600-660kg, 5- 20mm impact crushings stone 980-1070kg, water reducer 11kg, water 140kg.

A kind of prefabricated Cavity structural member of central island force type cavity building roof provided using the utility model, existing During the construction of field, colligation girder and girt strip in the grid of the girt strip reinforcing bar formation intersected in length and breadth, are directly placed into steel plate expansion Concrete is poured into a mould after net cage cavity structure 132, laying top flange bar-mat reinforcement 11, assembled cavity floor needed for obtaining；According to biography Defeated solar and wind can warm oneself cavity building roof with fire protection pipeline function when, need to the perforate in steel plate expansion net cage cavity structure, The short tube of reserved insertion girt strip is penetrated in the steel plate expansion net cage cavity structure of girt strip adjacent apertures, air-supply passage is formed；Or it is steady Surely reserve under conditions of insertion girt strip short tube position, its short tube can directly contact the adjacent steel plate expansion net cage cavity structure of girt strip Outer, cast-in-place concrete builds up Multifunctional cast-in-situ concrete cavity building roof.Meanwhile, the steel plate in the utility model expands Case cavity structure of throwing the net improves the fire-protection rating of whole building.

The utility model substitutes the hermetically sealed hollow cavity component of prior art or polyphenyl using steel plate expansion net cage cavity structure The solid Cavity structural member of vinyl foam, hollow rate is big, not easily damaged in construction, at the same on steel mesh easily fluting be easy to ventilation or Pipeline is installed；On-site consolidation is very convenient, and conevying efficiency is high, and scene transport is very convenient with installing；Job site horizontal location can Strong operability；The mesh of the steel plate expansion web of use is smaller, and intensity is bigger, and concrete mortar can be avoided to penetrate into steel mesh；Should Steel plate expansion net cage cavity structure hollow rate in cast-in-situ hollow building roof system is bigger, it is possible to decrease integrated engineering cost.

When the utility model is implemented, steel plate is made in high precision according to the requirement specification of architectural design, performance and is expanded Case cavity structure of throwing the net is crucial, passes through the Fully-mechanized production steel plate expansion web that sheerly metal material is fabricated to of the technology of the application Be crucial, then steel plate expansion web be changed to steel mesh body and supporting network makes steel mesh body or reinforcing bar dictyosome into, be combined into different size and The box Cavity structural member of model is used in cast-in-place cavity building roof.

Obviously, above-mentioned embodiment is only intended to clearly illustrate example, and the not restriction to embodiment. For those of ordinary skill in the field, other various forms of changes can also be made on the basis of the above description Or change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out Or among changing still in protection domain of the present utility model.

Claims (2)

1. a kind of prefabricated Cavity structural member of central island force type cavity building roof, it is characterised in that the prefabricated hollow structure Part includes armored concrete gate beam, armored concrete longitudinal rib beam and noggin piece；The prefabricated cavity member at least has two Root armored concrete longitudinal rib beam and some armored concrete gate beams；It is provided with the every armored concrete gate beam Steel plane grid is provided with lower two reinforcing bars, the every armored concrete longitudinal rib beam；The steel plane grid and the steel It is fixedly connected between muscle by bracket fixing device；At least one in the girt strip of the prefabricated cavity member reserves angle not Pour into a mould concrete；The armored concrete gate beam upper surface of the prefabricated cavity member is provided with some reinforced steel bar rings；It is described to fill out Fill in the space that component is arranged between the armored concrete gate beam intersected in length and breadth and armored concrete longitudinal rib beam；The filling Component has the base for being set to high-strength concrete layer；Upper table of the top surface of the noggin piece in the prefabricated cavity member Face is exposed, and the top surface and armored concrete gate beam and armored concrete of the exposed noggin piece of the prefabricated cavity member are vertical The upper surface of girt strip keeps same level；The base lower surface of the noggin piece is used as the lower surface of prefabricated cavity member A part in the lower surface of prefabricated cavity member so as to expose.

2. a kind of prefabricated Cavity structural member of central island force type cavity building roof as claimed in claim 1, its feature exists In the prefabricated cavity member also has armored concrete top flange plate, and the armored concrete top flange plate is located at described fill out Fill in the top of component, the armored concrete top flange plate and be provided with bar-mat reinforcement；The top surface of the noggin piece with it is described Armored concrete top flange plate is combined with each other.