CN202299060U - Fireproof cast-in-place open-web floor - Google Patents
Fireproof cast-in-place open-web floor Download PDFInfo
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- CN202299060U CN202299060U CN2011204180005U CN201120418000U CN202299060U CN 202299060 U CN202299060 U CN 202299060U CN 2011204180005 U CN2011204180005 U CN 2011204180005U CN 201120418000 U CN201120418000 U CN 201120418000U CN 202299060 U CN202299060 U CN 202299060U
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- reinforcing bar
- foam body
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Abstract
The utility model provides a fireproof cast-in-place open-web floor, which comprises an upper flange, rib beams and a steel bar and foam combined filling member. The steel bar and foam combined filling member consists of a fireproof structural bottom plate, a plastic foam body and a steel bar body; the steel bar body comprises an isolating steel bar and supporting steel bars; the isolating steel bar and the supporting steel bars of the steel bar body are integrally manufactured or welded into a whole; the isolating steel bar is arranged on the upper surface of the plastic foam body; the length of each supporting steel bar is greater than the height of the plastic foam body; the supporting steel bars penetrate through the plastic foam body and are arranged on the fireproof structural bottom plate; the fireproof structural bottom plate comprises a plane part; the plane part is arranged on an open-web floor template; and the lower part of each rib beam is wider than the middle part of the rib beam. The floor effectively overcomes the defect that the steel bars and the cast-in-place concrete do not have sufficient bonding force in the prior art; and the floor has fireproof performance.
Description
Technical field
The utility model relates to a kind of novel floor framing, is specifically related to a kind of fire prevention cast-in-situ open-web floor.
Background technology
At present in cast-in-situ steel reinforced concrete hollow floor system technical field; Usually adopt thin-wall box body member moulding by casting hollow floor system on an empty stomach; The ZL200410082381.9 " a kind of hollow floor slab with small dense ribs " that declares like practical Novel Human; On an empty stomach thin-wall box body forms hollow layer in floor slab with small dense ribs, can reach save build concrete, reduce the building floor height, the effect of purposes such as body rises the superstructure soundproof effect, improve the building cover structure performance, height cracking resistance shake-proof ability.
But because this kind hollow floor system cavity thin-wall box body of adopting pure inorganic cement cementitious materials to process, the cementing material solidification firm time that is used for making thin-wall box body is long, and mould and artificial utilization rate are low; And the cementing density of material after the sclerosis is big, and the cavity thin-wall box body weight of processing is heavier, and production, transportation and site operation are all inconvenient; Therefore occurred employing organic plastics foam on the market again and made the hollow floor system noggin piece, accompanying drawing 1 is the hollow floor system section of structure that uses the plastic foam noggin piece in the prior art, and is as shown in Figure 1; After putting up hollow floor system template 2; On template 2, lay base plate reinforcing bar 3, the good rib steel muscle 4 of colligation forms netted space between the rib steel muscle 4; In the space, lay plastic foam noggin piece 1; Directly contact with base plate reinforcing bar 3 for isolating plastic foam noggin piece 1, also will be between base plate reinforcing bar 3 and plastic foam noggin piece 1 the inorganic cushion block of cloth amplification quantity, lay top board reinforcing bar 5 then; Carry out concrete cast-in-site afterwards, remove superstructure template 2 behind the superstructure hardened forming and get final product.
Yet owing to put into the plastic foam noggin piece of superstructure filling usefulness is organic matter; Construction worker's pin when the floor site operation is stepped on top board reinforcing bar 5; Base plate reinforcing bar 3 contacts in the plastic foam noggin pieces 1 or top board reinforcing bar 5 is absorbed in the plastic foam noggin piece 1 easily; Therefore the part reinforcing bar can not be by cast-in-place concrete parcel, corresponding can not produce between reinforcing bar and the concrete necessary bond stress, finally cause the superstructure easy of crack of pouring into a mould and cause hidden dangers in project easily.And foam-filled member of inorganic plastics and inorganic cushion block be not because fire prevention reaches A level noninflammability; Generally can only in the hollow floor system in the stressed cross section of " worker " font, adopt; But in the stressed cross section of " T " font; Because the superstructure bottom flange lacks the isolation of concrete cover, is difficult to satisfy the whole fire protection requirement of superstructure, so be difficult to use the foam-filled member of inorganic plastics on the superstructure in the stressed cross section of " T " font in the prior art.
There is aforesaid defective in the hollow floor system that pours in view of available technology adopting plastic foam noggin piece; Therefore; Develop the stressed cross section fire prevention of a kind of " T " font cast-in-situ open-web floor; The reinforced foam combination noggin piece that the superstructure in the stressed cross section of this kind " T " font adopts can realize that suitability for industrialized production speed is fast, efficient is high, quality is good, cost is low, transportation, loading and unloading, easy construction; And this kind superstructure can be stopped floor bar and be absorbed in and bring hidden dangers in project in the plastic foam, eliminate to isolate cushion block, and hollow floor system that in addition should the stressed cross section of " T " font can satisfy whole fireproof performance, has become the urgent need of hollow floor system art innovation.
The utility model content
The utility model purpose is to provideA kind of fire prevention cast-in-situ open-web floor comprises top flange, girt strip and reinforced foam combination noggin piece; Said reinforced foam combination noggin piece is made up of fire proof construction base plate, plastic foam body and reinforcing bar body; Said reinforcing bar body comprises isolates reinforcing bar and bearing bar; The isolation reinforcing bar of said reinforcing bar body and bearing bar are made by steel bar overall or are as a whole through being welded into, and said isolation reinforcing bar places plastic foam body upper surface, and the length of said bearing bar is greater than the height of plastic foam body; Said bearing bar runs through the plastic foam body and places on the fire proof construction base plate; Said fire proof construction base plate comprises a planar section, and said planar section places on the hollow floor system template, and the lower width of said girt strip is greater than girt strip middle part width.
More preferred, saidThe plastic foam body is provided with the cast that runs through upper and lower surfaces and uses hole, pours into a mould the middle part that is positioned at plastic foam body upper and lower surfaces with the both ends open of hole, and said cast connects top flange and fire proof construction base plate with the concrete in the hole.。
More preferred, saidBearing bar the lower end be the sharp-crested face.
More preferred, saidThe side is provided with the isolation reinforcing bar around the plastic foam body.
More preferred, saidThe fire proof construction base plate is formed five shapes by a planar base surface and four inclined-planes.
More preferred, saidThe fire proof construction base plate is formed polygon multiaspect shape by a planar base surface, four inclined-planes and four short edge surface, lays reinforced foam combination noggin piece in the described polygon multiaspect shape.
More preferred, saidThe inclined-plane of fire proof construction base plate matees for short toothed edge, the sawtooth on short toothed edge and the plastic foam body each other.
More preferred, saidThe plastic foam body is the plastic foam body through flame treatment.
More preferred, saidBe placed with the cracking resistance gauze wire cloth in the fire proof construction base plate.
More preferred, saidVertically bury or laterally be embedded with cable type intensification heating element in the girt strip underground.
The plastic foam body that the reinforced foam combination noggin piece of the utility model hollow floor system adopts foamed plastic to process; Bearing bar in the prefabricated reinforcing bar body is inserted the plastic foam body run through and connect the fire proof construction base plate; Bearing bar and be higher than the plastic foam body; Again the top flange top rebars is placed and isolate on the reinforcing bar, bear by bearing bar and isolate the normal pressure and other working load pressure that transmits on the reinforcing bar, omitted in the prior art plastic foam surface is carried out the step of cure process and exempted a large amount of construction cushion blocks; Therefore this reinforced foam combination noggin piece manufacturing speed is fast, production efficiency is high, saves labour turnover; Isolating reinforcing bar can prevent the top board reinforcing bar contact of hollow floor system or be absorbed in the plastic foam body, efficiently solve reinforcing bar and cast-in-situ concrete bond stress defect of insufficient in the prior art; Simultaneously, only need utilize a spot of reinforcing bar body in the utility model, compare required a large amount of glass fabrics and the aluminium sulfate rapid setting cement of cure process in the prior art, can save certain material cost and labor; In addition, the utility model also is provided with cast and uses hole on reinforced foam combination noggin piece, and penetration concrete was strengthened being connected between fire proof construction base plate and the superstructure top flange from hole; And bearing bar has been carried out optimization process, and the part that bearing bar inserts in the plastic foam body is provided with bend, can effectively prevent the displacement of plastic foam body; The plastic foam body places in the multiaspect polygon fire proof construction base plate fully, has solved the disaster hidden-trouble problem that the external dew of " T " font stressed cross section plastic foam possibly cause.
Bearing bar runs through foams and places on the fire proof construction base plate simultaneously; The planar section of fire proof construction base plate places on the hollow floor system template; Its chamfered portion directly embeds in the girt strip, and concrete mortar has been filled up the outer angle space on fire proof construction base plate plane and inclined-plane, has both reduced the exposed parts of fire proof construction base plate; Eliminated the easy hidden danger that produces fire of plastic foam body; The lower width that makes girt strip has again increased the lifting surface area of girt strip bottom, the quake-resistant safety property under height reliability of structure, the geological process greater than girt strip middle part width; Simultaneously, the interior angle on fire proof construction base plate plane and inclined-plane forms the space, and the plastic foam body of band right-angle side only need be placed into the fixed point on inclined-plane, has reduced the height and the foam consumption of plastic foam body thus.
Therefore the hollow floor system made of the employing reinforced foam of the utility model combination noggin piece with respect to prior art more save cost, construction more convenient quick, building cover structure is more reasonable and efficiently solve the invar muscle is absorbed in the engineering structures potential safety hazard that generation bond stress deficiency is brought in the plastic foam; Possess excellent fireproof performance simultaneously, satisfy the fireproofing technique requirement of hollow floor system fully.
Description of drawings
Fig. 1 is the hollow floor system section of structure that uses the plastic foam noggin piece in the prior art.
The section of structure of first embodiment of the reinforced foam combination noggin piece that Fig. 2 is adopted for the utility model hollow floor system.
The section of structure of second embodiment of the reinforced foam combination noggin piece that Fig. 3 is adopted for the utility model hollow floor system.
The section of structure of the 3rd embodiment of the reinforced foam combination noggin piece that Fig. 4 is adopted for the utility model hollow floor system.
The section of structure of the 4th embodiment of the reinforced foam combination noggin piece that Fig. 5 is adopted for the utility model hollow floor system.
The structural perspective of the 5th embodiment of the reinforced foam combination noggin piece that Fig. 6 is adopted for the utility model hollow floor system.
The section of structure of the 6th embodiment of the reinforced foam combination noggin piece that Fig. 7 is adopted for the utility model hollow floor system.
The section of structure of the 7th embodiment of the reinforced foam combination noggin piece that Fig. 8 is adopted for the utility model hollow floor system.
Hollow floor system first section of structure that Fig. 9 adopts reinforced foam combination noggin piece to make for the utility model.
Figure 10 adopts second section of structure of the hollow floor system of reinforced foam combination noggin piece making for the utility model.
The specific embodiment
Further specify below in conjunction with accompanying drawing the utility model.
The section of structure of first embodiment of the reinforced foam combination noggin piece 6 that Fig. 2 is adopted for the utility model hollow floor system.As shown in Figure 2, reinforced foam combination noggin piece 6 is made up of fire proof construction base plate 15, plastic foam body 7 and reinforcing bar body 8.Wherein fire proof construction base plate 15 adopts the cementing material to process; Can adopt and make by hand or the mechanical compaction mode is produced; The reinforcing material such as glass fiber, cloth, fleece of base plate strength can also be provided for strengthening in the fire proof construction base plate 15, the cracking resistance gauze wire cloth of base plate cracking resistance can also be provided for; Wherein plastic foam body 7 adopts foamed plastic to be made; Be the plastic foam solid; Fireproof performance for the hollow floor system that guarantees casting complete; Can also adopt common flame-retarded technology that plastic foam body 7 is carried out flame treatment, according to the needs of architectural planning design, plastic foam body 7 can be arranged to different shapes and specification.
Wherein reinforcing bar body 8 constitutes with bearing bar 10 by isolating reinforcing bar 9; Isolating reinforcing bar 9 is connected through being welded into whole mode with bearing bar 10; As shown in Figure 2; Isolation reinforcing bar 9 is positioned at the upper surface of plastic foam body 7, is born by bearing bar and isolates the normal pressure and other working load pressure that transmits on the reinforcing bar, has omitted in the prior art cure process is carried out on the plastic foam surface.In addition, in order wherein to isolate contacting of plastic foam body 7 and hollow floor system girt strip reinforcing bar, can also around the plastic foam body, isolation reinforcing bar 9 be set the side.In order between reinforced foam combination noggin piece 6 and hollow floor system base plate reinforcing bar, to separate the certain space distance, the length of bearing bar 10 should be greater than the height of plastic foam body 7 more than 10 millimeters; The lower end of bearing bar 10 is a sharp-crested face 11, and the effect of sharp-crested face 11 is to make things convenient for bearing bar 10 to insert to wear plastic foam body 7 and is placed on the fire proof construction base plate 15.
The section of structure of second embodiment of the reinforced foam combination noggin piece 6 that Fig. 3 is adopted for the utility model hollow floor system.Reinforcing bar body 8 constitutes with bearing bar 10 by isolating reinforcing bar 9, isolates reinforcing bar 9 and makes through the steel bar overall wrap direction with bearing bar 10.Wherein as the fire proof construction base plate 15 of reinforced foam combination noggin piece 6 ingredients, be made up of a planar base surface and four inclined-planes, pentagon is formed on planar base surface and four inclined-planes, because Fig. 3 is a sectional drawing, so the inclined-plane that embodies in the figure is two.Hypotenuse can embed in the cast-in-place superstructure girt strip when reinforced foam combination noggin piece 6 was applied to hollow floor system.
The section of structure of the 3rd embodiment of the reinforced foam combination noggin piece 6 that Fig. 4 is adopted for the utility model hollow floor system.Fire proof construction base plate 15 as reinforced foam combination noggin piece 6 ingredients comprises a planar base surface and four inclined-planes, on four inclined-planes, also is provided with four short edge surface, and planar base surface, four inclined-planes and four short edge surface are formed polygon multiaspect shape.When the plastic foam body 7 at right angle was placed in fire proof construction base plate 15, the right angle only need be placed to the fixed point on inclined-plane, between plastic foam body 7 and fire proof construction base plate 15, formed the space, thereby can save the plastic foam consumption in this space.
The section of structure of the 4th embodiment of the reinforced foam combination noggin piece 6 that Fig. 5 is adopted for the utility model hollow floor system.The 3rd embodiment difference that this embodiment and Fig. 4 are corresponding is that short edge surface is embedded in the plastic foam body 7, between plastic foam body 7 and fire proof construction base plate 15, forms the space, thereby can save the plastic foam consumption in this space.
The structural perspective of the 5th embodiment of the reinforced foam combination noggin piece 6 that Fig. 6 is adopted for the utility model hollow floor system.Sidewall is provided with the isolation reinforcing bar around the plastic foam body.One of them is short toothed edge the inclined-plane of fire proof construction base plate, and the sawtooth on short toothed edge and the plastic foam body matees each other, and the globality of the two combination is better.
The section of structure of the 6th embodiment of the reinforced foam combination noggin piece 6 that Fig. 7 is adopted for the utility model hollow floor system.For the air pressure of balance reinforced foam combination noggin piece 6 upper and lower surfaces when cast-in-place, in noggin piece 6, form the circulation road of cast-in-situ concrete; Can also make up at reinforced foam and cast is set in the noggin piece 6 with hole 12; As shown in Figure 4; Cast runs through the upper and lower surfaces of reinforced foam combination noggin piece 6 with hole; The both ends open of hole is positioned at the middle part of upper and lower surfaces, uses hole owing to be provided with this cast, and the concrete that is cast in this hole can connect fire proof construction base plate 15 and the top flange of reinforced foam combination noggin piece more than 6.
The section of structure of the 7th embodiment of the reinforced foam combination noggin piece 6 that Fig. 8 is adopted for the utility model hollow floor system.As shown in Figure 4, the side of reinforced foam combination noggin piece 6 and the rotation angle position of soffit are arranged to inclined-plane 13, and being provided with of inclined-plane 13 can make plastic foam body 7 and fire proof construction base plate 15 coincide better.In addition; Plastic foam body 7 moves down along bearing bar 10 under the weight concrete effect when preventing cast-in-situ concrete; The part that bearing bar 10 is positioned at plastic foam body 7 is provided with bend 14, and the effect of bend 14 is the position of fixed plastics foams 7 and prevents that it is subjected to displacement.
Fig. 9 adopts first section of structure of the hollow floor system of reinforced foam combination noggin piece making for the utility model.When reinforced foam combination noggin piece 6 is applied to cast-in-situ open-web floor, set up superstructure template 2, the good rib steel muscle 4 of colligation on template 2; Form netted space between the rib steel muscle 4; In the space, lay reinforced foam combination noggin piece 6, wherein the planar base surface of fire proof construction base plate 15 directly is placed on the superstructure template 2, and the chamfered portion of fire proof construction base plate 15 stretches in the rib steel muscle 4; Lay top board reinforcing bar 5 then; Carry out concrete cast-in-site after anti-floating is handled, cast-in-place concrete and rib steel muscle 4 form the girt strip 16 of hollow floor system, with the top flange 17 of top board reinforcing bar 5 formation hollow floor systems.Wherein plastic foam body 7 is positioned on fire proof construction base plate 15 inboards fully in the reinforced foam combination noggin piece 6; Constitute the fire proof construction bottom of superstructure; Plastic foam body 7 is wrapped in girt strip 16, superstructure top flange 17, the fire proof construction base plate 15 fully; Even organic plastics foams 7 fire lines do not reach anti-flammability, owing to plastic foam body 7 can not expose to outside the superstructure, so hollow floor system meets the fireproof performance related request on the whole fully.In addition, in the temperature control superstructure of demand is arranged, can also in girt strip, vertically bury or laterally be equipped with cable type intensification heating element underground, cable type intensification heating element passes girt strip and forms through plastic foam body upper surface and after being absorbed in elongated.In addition, fire proof construction base plate 7 directly places on the template 2 of superstructure, is used to isolate the cushion block of plastic foam body and superstructure template when directly having exempted the construction of prior art hollow floor system, and therefore construction is more easy.
Because being provided with, reinforced foam combination noggin piece 6 isolates reinforcing bar 9 simultaneously; When being applied in the hollow floor system; Isolate that reinforcing bar 9 is positioned on the plastic foam body 7, under the top board reinforcing bar 5, even the workman tramples the top board reinforcing bar 5 of superstructure when cast-in-place, owing to isolate the existence of reinforcing bar 9; Top board reinforcing bar 5 also can not be absorbed in or directly contact plastic foam body 7; Therefore cast-in-place concrete can contact parcel top board reinforcing bar 5 well, guarantees that top board reinforcing bar 5 fully by the concrete parcel, can not produce the problem of the not enough structural safety of bond stress.
Figure 10 adopts second section of structure of the hollow floor system of reinforced foam combination noggin piece making for the utility model.Its difference with corresponding first section of structure of Fig. 9 is, in the section of structure shown in Figure 10, has placed the reinforced foam combination noggin piece 6 of different shape in the hollow floor system, get final product with reference to Fig. 9 for the understanding of other structures, does not give unnecessary details with regard to not doing herein.
When the utility model is implemented; At first precast reinforced foam combination noggin piece 6; Its raw material plastic foam is processed through plastic foamed machine, according to the plastic foam body 7 that need plastic foam be cut into required specification, carries out the flame treatment of plastic foam body 7 then; Or when it is plastic foamed, carry out flame treatment, isolation reinforcing bar 9 and bearing bar 10 in the prefabricated reinforcing bar body 8; Adopt machine pressing or make moulding fire proof construction base plate 15 by hand.
After carrying out the utility model when adopting the hollow floor system construction that reinforced foam combination noggin piece makes, at first putting up hollow floor system template 2, the good rib steel muscle 4 of colligation; Form netted space between the rib steel muscle 4; In the space, lay the fire proof construction base plate 15 in the reinforced foam combination noggin piece 6 earlier, in fire proof construction base plate 15, place plastic foam body 7, the bearing bar in the reinforcing bar body 8 10 is inserted plastic foam body 7; Completion is combined into reinforced foam combination noggin piece 6; Lay top board reinforcing bar 5 then, carry out the anti-floating of hollow floor system and the setting of preheating embedding line, in the temperature control superstructure girt strip of demand is arranged, vertically bury or laterally be equipped with cable type intensification heating element underground; Cable type intensification heating element passes girt strip and forms through plastic foam body upper surface and after being absorbed in elongated; Carry out concrete cast-in-site afterwards, remove superstructure template 2 behind the superstructure hardened forming, can obtain rational in infrastructure, the easy construction of the utility model, the hollow floor system that fireproof performance is good.
Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although the utility model has been carried out detailed explanation with reference to the foregoing description; The those of ordinary skill in affiliated field is to be understood that; Still can make amendment or be equal to replacement the specific embodiment of the utility model, and the end breaks away from any modification of the utility model spirit and scope and perhaps is equal to replacement, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (9)
1. a fire prevention cast-in-situ open-web floor comprises top flange, girt strip and reinforced foam combination noggin piece; Said reinforced foam combination noggin piece is made up of fire proof construction base plate, plastic foam body and reinforcing bar body; Said reinforcing bar body comprises isolates reinforcing bar and bearing bar; The isolation reinforcing bar of said reinforcing bar body and bearing bar are made by steel bar overall or are as a whole through being welded into, and said isolation reinforcing bar places plastic foam body upper surface, and the length of said bearing bar is greater than the height of plastic foam body; Said bearing bar runs through the plastic foam body and places on the fire proof construction base plate; Said fire proof construction base plate comprises a planar base surface, and said planar base surface places on the hollow floor system template, and the lower width of said girt strip is greater than girt strip middle part width.
2. fire prevention cast-in-situ open-web floor as claimed in claim 1; It is characterized in that said plastic foam body is provided with the cast that runs through upper and lower surfaces and uses hole; Said cast is positioned at the middle part of plastic foam body upper and lower surfaces with the both ends open of hole, and said cast connects top flange and fire proof construction base plate with the concrete in the hole.
3. fire prevention cast-in-situ open-web floor as claimed in claim 1, it is characterized in that said bearing bar the lower end be the sharp-crested face.
4. fire prevention cast-in-situ open-web floor as claimed in claim 1 is characterized in that said plastic foam body is provided with the isolation reinforcing bar in the side all around.
5. fire prevention cast-in-situ open-web floor as claimed in claim 1 is characterized in that said fire proof construction base plate forms five shapes by a planar base surface and four inclined-planes.
6. fire prevention cast-in-situ open-web floor as claimed in claim 5 is characterized in that said fire proof construction base plate forms polygon multiaspect shape by a planar base surface, four inclined-planes and four short edge surface, lays reinforced foam combination noggin piece in the described polygon multiaspect shape.
7. fire prevention cast-in-situ open-web floor as claimed in claim 5, it is characterized in that said fire proof construction base plate the inclined-plane one of them be short toothed edge, the sawtooth on short toothed edge and the plastic foam body matees each other.
8. fire prevention cast-in-situ open-web floor as claimed in claim 1 is characterized in that being placed with the cracking resistance gauze wire cloth in the said fire proof construction base plate.
9. fire prevention cast-in-situ open-web floor as claimed in claim 1 is characterized in that vertically burying underground in the said girt strip or laterally being embedded with cable type intensification heating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204180005U CN202299060U (en) | 2011-10-28 | 2011-10-28 | Fireproof cast-in-place open-web floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204180005U CN202299060U (en) | 2011-10-28 | 2011-10-28 | Fireproof cast-in-place open-web floor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202299060U true CN202299060U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204180005U Expired - Lifetime CN202299060U (en) | 2011-10-28 | 2011-10-28 | Fireproof cast-in-place open-web floor |
Country Status (1)
| Country | Link |
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| CN (1) | CN202299060U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400513A (en) * | 2011-10-28 | 2012-04-04 | 王本淼 | Fireproof cast-in-place hollow floor system |
| CN103981944A (en) * | 2014-04-30 | 2014-08-13 | 王本淼 | High-rise building adopting cast-in-place hollow floors |
| CN110306666A (en) * | 2019-06-28 | 2019-10-08 | 中国二十二冶集团有限公司 | Assembling type steel structure Indoor Residential Ecological girder steel is without exposed structure and its construction method |
-
2011
- 2011-10-28 CN CN2011204180005U patent/CN202299060U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400513A (en) * | 2011-10-28 | 2012-04-04 | 王本淼 | Fireproof cast-in-place hollow floor system |
| CN103981944A (en) * | 2014-04-30 | 2014-08-13 | 王本淼 | High-rise building adopting cast-in-place hollow floors |
| CN110306666A (en) * | 2019-06-28 | 2019-10-08 | 中国二十二冶集团有限公司 | Assembling type steel structure Indoor Residential Ecological girder steel is without exposed structure and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20140625 |
|
| RGAV | Abandon patent right to avoid regrant |