CN103510649A - Prefabricated assembled light steel fire-proof composite floor structure - Google Patents
Prefabricated assembled light steel fire-proof composite floor structure Download PDFInfo
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- CN103510649A CN103510649A CN201310439815.5A CN201310439815A CN103510649A CN 103510649 A CN103510649 A CN 103510649A CN 201310439815 A CN201310439815 A CN 201310439815A CN 103510649 A CN103510649 A CN 103510649A
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Abstract
The invention discloses a prefabricated assembled light steel fire-proof composite floor structure. A light concrete pavement is poured on an autoclaved aerated concrete slab layer which is formed by same autoclaved aerated concrete slabs in a splicing mode, and distributed steel bars are arranged at connection positions of the upper surface of the autoclaved aerated concrete slab layer; a cold formed steel joist layer is composed of cold formed steel joists arranged in parallel at intervals and vertically and fixedly connected with the autoclaved aerated concrete slab layer; a fire-proof suspended ceiling is fixedly arranged in the arrangement direction of the cold formed steel joists, comprises fire-proof suspended ceiling battens and fire-proof suspended ceiling plates and further comprises fire-proof and heat insulation cotton felts, and the fire-proof and heat insulation cotton felts are located on the two sides of the cold formed steel joists and fixedly connected with the fire-proof suspended ceiling. Except the light concrete pavement, all the other parts can be prefabricated in a factory, spliced on site and reliable in connection, construction speed is high, and a great deal of light energy-saving environmental-friendly material is adopted for the composite floor structure. The composite floor structure is light in self weight and small in steel consumption, has the advantages of heat preservation, sound insulation and fire resistance and is suitable for floor systems of multi-story buildings and high-rise buildings.
Description
Technical field
The invention belongs to technical field of civil engineering, be specifically related to a kind of light steel composite floor system of a kind of prefabrication and assembly construction structure that meets multi-rise building fire prevention, sound isolation requirement.
Background technology
Compare the features such as steel work has environmental protection, anti-seismic performance is good, speed of application is fast, material recoverable with traditional reinforced concrete structure.Along with the develop rapidly of national economy, China's output of steel leaps to the first in the world, and domestic Steel Structure Industry is also rapidly developed.But compared with developed countries, it is still obviously on the low side that China's steel building accounts for the proportion of output of steel, meanwhile, still there is obvious gap at aspects such as energy-saving and cost-reducing (capable of circulation), suitability for industrialized production, consortium's operation, the standardization of products, seriation, generalizations in China's building structure.Because China is in industrialization and urbanization Rapid development stage, year project construction engineering quantity is huge, resource consumption is serious, and ecological deterioration pressure is huge, and Development of Green Building has been listed in the preferential theme in major fields in National Program for Medium-to Long-term Scientific and Technological Development.Therefore, the steel building of greatly developing environmental protection, anti-seismic performance excellence meets China's fundamental realities of the country, to economizing on resources and the energy, reduces environment pollution, promote that social sustainable development is significant, be also to accelerate China's architectural industrialization, an industrialized effective way simultaneously.
Light steel-OSB plate composite floor system structure of the prior art, usings single C type cold formed steel joist as floor beam, and the thick OSB plate (oriented wood chipboard) of the 12～18mm of usining is as floor structure.This building cover structure intensity is low, rigidity is low, and exist soundproof effect not good, vibrate the problems such as large, be not suitable for multi-rise building structure.
Hot-rolled steel section i beam-profiled sheet cast-in-situ steel reinforced concrete composite floor system structure of the prior art, usings hot-rolled steel section i beam as floor beam, usings on profiled sheet reinforced concrete floor more than cast-in-place 100mm thickness as floor structure.Such building cover structure steel using amount is large, building costs is high, and has lost the features such as steel work prefabrication and assembly construction, speed of application be fast, low in the pollution of the environment.
Autoclaved aerated concrete slabs of the prior art is that to take flyash (or silica sand), cement, lime etc. be main material, the many aerocretes sheet forming forming through steam curing at high pressure, it is a kind of board of superior performance, there is the features such as lightweight, thermal insulation, sound insulation, fire-resistant, constructability, at home gradually for nonbearing partition and room panel structure.Because Autoclaved aerated concrete slabs intensity is lower, therefore, in traditional hot-rolled steel section structure, be difficult to use as floor plate.
On the other hand, fire prevention is that steel work generally needs the problem of facing.Light steel-OSB plate composite floor system of the prior art, due to the combustibility of OSB plate, is difficult to meet the fire protection requirement of China's multi-rise building structure.Hot-rolled steel section beam-profiled sheet cast-in-situ concrete composite floor system structure of the prior art is many improves steel structure fire-resistant performance by girder steel being carried out to the mode of fireproof paint construction.Which involves great expense, and fireproof paint may exist problem of aging.
Cold formed steel also claims light gauge cold-formed steel shape, is steel disc, steel band, steel plate or flat steel bar are formed by cold working, and usual thickness is 0-2mm.Compare with traditional hot-rolled steel section, cold formed steel can obtain more reasonably cross sectional shape economically, and then obtains the gratifying ratio of strength to weight.
Summary of the invention
The technical problem solving: for the deficiencies in the prior art, the invention provides a kind of light steel composite floor system of prefabrication and assembly construction structure that is applicable to multi-rise building structure, solve in prior art light steel-OSB plate composite floor system structure and have that fire resistance is poor, intensity is low, rigidity is low, sound insulation is poor, vibrate the defects such as large; And hot-rolled steel section i beam-profiled sheet cast-in-situ steel reinforced concrete composite floor system structure exists, speed of application is slow, environment pollution is large, fire-resistant high in cost of production defect; And though simple Autoclaved aerated concrete slabs has the advantages such as lightweight, thermal insulation, sound insulation, fire-resistant, constructability, because intensity is low, cannot be as technical problems such as floor plate uses in traditional hot-rolled steel section structure.
Technical scheme: for solving the problems of the technologies described above, the present invention by the following technical solutions:
The fire-resistant composite floor system structure of light steel, comprises light weight concrete construction surface layer, Autoclaved aerated concrete slabs layer, cold formed steel joist layer and fire prevention furred ceiling from top to bottom successively;
Described light weight concrete construction surface layer is built on Autoclaved aerated concrete slabs layer;
Described Autoclaved aerated concrete slabs layer is comprised of identical Autoclaved aerated concrete slabs, the long side direction of Autoclaved aerated concrete slabs aligns and is spliced to form a block length plate, the minor face of the Autoclaved aerated concrete slabs on every block length plate and the minor face of the Autoclaved aerated concrete slabs on adjacent long slab align one by one,, and the joining place of Autoclaved aerated concrete slabs upper surface arranges distribution reinforcement;
The cold formed steel joist that described cold formed steel joist layer is arranged by parallel interval forms, cold formed steel joist is distributed under the minor face of Autoclaved aerated concrete slabs and below, the position parallel with minor face, and described Autoclaved aerated concrete slabs layer is connected and fixed with cold formed steel joist is vertical;
Described fire prevention furred ceiling comprises fire prevention furred ceiling lath and fire prevention ceiling tile, and fire prevention furred ceiling lath is distributed in the below of cold formed steel joist arranged direction, and fire prevention ceiling tile is arranged in fire prevention furred ceiling lath below, and cold formed steel joist is fixedly connected with fire prevention furred ceiling;
Also comprise the cotton felt of fire-proof and thermal-insulation, the side of the cotton felt of fire-proof and thermal-insulation is positioned on the fire prevention furred ceiling lath of cold formed steel joist down either side and is fixedly connected with fire prevention furred ceiling lath, and the centre of the cotton felt of fire-proof and thermal-insulation is laid on fire prevention ceiling tile.
Further, in the present invention, described cold formed steel joist and Autoclaved aerated concrete slabs layer interconnect by tapping screw and anti-pulling connector, and described anti-pulling connector is arranged in the short brink of Autoclaved aerated concrete slabs.Anti-pulling connector makes the connection of side, minor face place of Autoclaved aerated concrete slabs reliable, and sting tooth, the groove fit of side, Yu Changbian place are spliced Autoclaved aerated concrete slabs as a whole jointly simultaneously.
Further, in the present invention, the width of described Autoclaved aerated concrete slabs is 600mm, and thickness is not less than 75mm, and length customizes according to Design of Floors size; The tooth of stinging of protuberate is set on Zhong，Yi Ge side, Liang Ge side, Autoclaved aerated concrete slabs Shang Changbian place, on another side, arranges and the groove of stinging tooth and mating; Long edge position at Autoclaved aerated concrete slabs upper surface is provided with corner cut; The side at the minor face place on Autoclaved aerated concrete slabs is provided with circular groove; In the inside of Autoclaved aerated concrete slabs, is furnished with upper and lower two-layer reinforcing bar.The side, Chang Bian place of Autoclaved aerated concrete slabs cooperatively interacts and splices by stinging tooth and groove, between the adjacent Autoclaved aerated concrete slabs in the He Yugai side, side, minor face place of Autoclaved aerated concrete slabs, utilizes anti-pulling connector self-assembling formation gap.
Further, in the present invention, described light weight concrete construction surface layer adopts self-compacting concrete, and thickness is more than or equal to 25mm.Self-compacting concrete has advantages of good fluidity, can make to construct convenient.
Further, in the present invention, described cold formed steel joist by two cross sections be C type or U-shaped cold formed steel adopt Two bors d's oeuveres back-to-back form splicing form, comprise the upper and lower wing and middle Mosaic face, and the thickness of described cold formed steel is between 0.6mm～3mm; Middle part at Mosaic face connects with screw along Mosaic face length direction, simultaneously at Mosaic face, near the upper and lower wing, sentences the spacing set-point solder joint that is not less than 500mm and carries out spot welding connection.I iron is conventional supporting member in engineering construction, good stability, and intensity is high.
Further, in the present invention, the spacing of adjacent two cold formed steel joists is between 400mm～600mm.The span of Autoclaved aerated concrete slabs is obviously diminished, indirectly improved the bearing capacity of Autoclaved aerated concrete slabs, made up the lower defect of Autoclaved aerated concrete slabs intensity.
Further, in the present invention, the cotton felt of described fire-proof and thermal-insulation is rock wool or aluminium silicate wool or the glass wool that thickness is not less than 35mm.The cotton felt of fire-proof and thermal-insulation of this different materials all has good fire insulation performance.
Further, in the present invention, described fire prevention furred ceiling lath and fire prevention ceiling tile are fire-resistant gypsum panel or the glass magnesium plate that thickness is not less than 10mm.The fireproof performance of fire-resistant gypsum panel or glass magnesium plate is good.
Preferably, in the present invention, described anti-pulling connector comprises bolt, steel disc and threaded steel plate, and bolt is fixing through being screwed into after steel disc in steel plate, described steel disc frame is in the upper surface of adjacent two Autoclaved aerated concrete slabss, and described steel plate and cold formed steel joist are welded and fixed.By anti-pulling connector, Autoclaved aerated concrete slabs and the firm joist of cold forming are connected and fixed.
Preferably, in the present invention, described anti-pulling connector comprises L shaped bolt and the steel disc with nut, and described L shaped bolt is welded and fixed with cold formed steel joist through after steel disc, and described steel disc frame is in the upper surface of adjacent two Autoclaved aerated concrete slabss.
Beneficial effect: the present invention combines the cotton felt of fire prevention furred ceiling lath, fire prevention ceiling tile and fire-proof and thermal-insulation for the light steel composite floor system of prefabrication and assembly construction, except light weight concrete construction surface layer, remainder all can be realized prefabrication, on-site consolidation, connect reliable, speed of application is fast, adopts in a large number light energy-saving environmental-protection material.Dead load is light, steel using amount is economized, and has insulation, sound insulation and fire-resistant feature, is applicable to the floor system of multi-story and high-rise building.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the present invention is in the cross sectional representation of side, Autoclaved aerated concrete slabs minor face place joint;
Fig. 3 is that the present invention is in the cross sectional representation of side, Autoclaved aerated concrete slabs Chang Bian place joint;
Fig. 4 is Autoclaved aerated concrete slabs structural representation of the present invention;
Fig. 5 is the inner cross section of Autoclaved aerated concrete slabs of the present invention arrangement of reinforcement schematic diagram;
Fig. 6 is Autoclaved aerated concrete slabs inner plane arrangement of reinforcement schematic diagram of the present invention;
Fig. 7 is the present invention's cross sectional representation of Two bors d's oeuveres C type cold formed steel joist back-to-back;
Fig. 8 is the present invention's longitudinal section schematic diagram of Two bors d's oeuveres C type cold formed steel joist back-to-back;
Fig. 9 is anti-pulling connector the first structural representation of the present invention;
Figure 10 is anti-pulling connector the second structural representation of the present invention;
Figure 11 is that Autoclaved aerated concrete slabs upper surface distribution reinforcement of the present invention, anti-pulling connector are arranged schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
The fire-resistant composite floor system structure of light steel, comprises light weight concrete construction surface layer 1, Autoclaved aerated concrete slabs layer, cold formed steel joist layer and fire prevention furred ceiling from top to bottom successively as shown in Figures 1 to 3;
Described light weight concrete construction surface layer 1 is built on Autoclaved aerated concrete slabs layer, and described light weight concrete construction surface layer 1 adopts self-compacting concrete, and thickness is more than or equal to 25mm.
As shown in Figures 4 and 5, described Autoclaved aerated concrete slabs layer is comprised of identical Autoclaved aerated concrete slabs 2, the long side direction of Autoclaved aerated concrete slabs 2 aligns and is spliced to form a block length plate, the minor face of the Autoclaved aerated concrete slabs 2 on every block length plate and the minor face of the Autoclaved aerated concrete slabs 2 on adjacent long slab align one by one, and the joining place of Autoclaved aerated concrete slabs 2 upper surfaces arranges distribution reinforcement 8; Distribution reinforcement 8 can improve the intensity of Autoclaved aerated concrete slabs joining place.The width of described Autoclaved aerated concrete slabs 2 is 600mm, and thickness is not less than 75mm, and its length can customize according to Design of Floors size; What protuberate was set on Autoclaved aerated concrete slabs 2 Zhong，Yi Ge sides, Liang Ge side, Shang Changbian place stings tooth 13, arranges and the groove 14 of stinging tooth 13 and mating on another side; Long edge position at Autoclaved aerated concrete slabs 2 upper surfaces is provided with corner cut 12; The side at the minor face place on Autoclaved aerated concrete slabs 2 is provided with circular groove 11, and in fluid concrete surface layer process, concrete flows in groove, can increase the snap-in force of concrete pavement and Autoclaved aerated concrete slabs 2, improves globality; In the inside of Autoclaved aerated concrete slabs 2, be furnished with upper and lower two-layer reinforcing bar, the inner reinforcing bar arranging provides safeguard to the intensity of Autoclaved aerated concrete slabs.
As shown in FIG. 7 and 8, the cold formed steel joist 3 that described cold formed steel joist layer is arranged by parallel interval forms, cold formed steel joist 3 is distributed under the minor face on Autoclaved aerated concrete slabs 2 and below, the position parallel with minor face, and is connected and fixed with Autoclaved aerated concrete slabs layer is vertical.Now, should note avoiding Autoclaved aerated concrete slabs 2 to encorbelment as far as possible.
Described cold formed steel joist 3 by two cross sections be C type or U-shaped cold formed steel adopt Two bors d's oeuveres back-to-back form splicing form, comprise the upper and lower wing and middle Mosaic face, and the thickness of described cold formed steel is between 0.6mm～3mm; Middle part at Mosaic face connects with screw along Mosaic face length direction, simultaneously at Mosaic face, near the upper and lower wing, sentences the spacing set-point solder joint 15 that is not less than 500mm and carries out spot welding connection; And the spacing of adjacent two cold formed steel joists 3 is between 400mm～600mm.
Described anti-pulling connector 7 is arranged in the short brink of Autoclaved aerated concrete slabs 2.As shown in Figures 9 and 10, the composition form of described anti-pulling connector 7 can have 2 kinds.The first comprises bolt 10, steel disc 16 and threaded steel plate 17, bolt 10 is screwed into after through the aperture on steel disc 16 in the steel plate 17 of strap bolt fixing, 16 of described steel discs are in the upper surface of adjacent two Autoclaved aerated concrete slabss 2, and described steel plate 17 is welded and fixed with cold formed steel joist 3.The second comprises with the L shaped bolt 18 of nut and steel disc 16, after the aperture that described L shaped bolt 18 passes on steel disc 16, be welded and fixed with cold formed steel joist 3,16 of described steel discs, in the upper surface of adjacent two Autoclaved aerated concrete slabss 2, compress steel disc 16 by nut screwing clamping.The side, minor face place that all can connect securely Autoclaved aerated concrete slabs 2.
Described fire prevention furred ceiling comprises fire prevention furred ceiling lath 5 and fire prevention ceiling tile 6, and described fire prevention furred ceiling lath 5 and fire prevention ceiling tile 6 are not less than fire-resistant gypsum panel or the glass magnesium plate of 10mm for thickness.Fire prevention furred ceiling lath 5 is fixed on fire prevention ceiling tile 6 and is distributed in along the below of cold formed steel joist 3 arranged direction by tapping screw 9, and cold formed steel joist 3 is also fixedly connected with by tapping screw 9 with fire prevention furred ceiling lath 5;
Also comprise the cotton felt 4 of fire-proof and thermal-insulation, the cotton felt 4 of described fire-proof and thermal-insulation is not less than rock wool or aluminium silicate wool or the glass wool of 35mm for thickness.The side of the cotton felt 4 of fire-proof and thermal-insulation is positioned on the fire prevention furred ceiling lath 5 of cold formed steel joist 3 down either side and is fixedly connected with fire prevention furred ceiling lath 5, and the centre of the cotton felt 4 of fire-proof and thermal-insulation is laid on fire prevention ceiling tile 6.Between the cotton felt 4 of described fire-proof and thermal-insulation and fire prevention furred ceiling lath 5, be provided with steel disc, tapping screw 9 is fixed connection through fire prevention furred ceiling lath 5, steel disc and the cotton felt 4 of fire-proof and thermal-insulation successively.
The present invention is in work progress, first 3 assemblings of cold formed steel joist are complete, the web that is C type or U-shaped cold formed steel at two cross sections is that the middle part of Mosaic face highly connects with tapping screw 9, carries out spot welding connection at Mosaic face near upper and lower Yi Chu set-point solder joint 15 simultaneously; Then at the top flange of cold formed steel joist 3 welding anti-pulling connector 7.
After 3 assemblings of cold formed steel joist, along cold formed steel joist 3 vertical direction, lay Autoclaved aerated concrete slabs 2, and at each Autoclaved aerated concrete slabs 2 docking location places, distribution reinforcement 8 is set.By tightening anti-pulling connector 7, location preliminary fixedly Autoclaved aerated concrete slabs 2, then interconnect Autoclaved aerated concrete slabs 2 and cold formed steel joist 3 by tapping screw 9.
Then at the upper surface of Autoclaved aerated concrete slabs 2, build piecewise light weight concrete construction surface layer 1, at light weight concrete construction surface layer, between 1 curing time, can carry out all the other floor constructions, also can carry out this layer of building cover structure furred ceiling and partly construct.If carry out ceiling construction, first fire prevention furred ceiling lath 5 is installed under the bottom flange of cold formed steel joist 3, fire prevention furred ceiling lath 5 can be realized with joist 3 and being interconnected by a small amount of tapping screw 9, then on fire prevention furred ceiling lath 5, by a small amount of tapping screw 9 and steel disc, fix the cotton felt 4 of fire-proof and thermal-insulation, fire prevention ceiling tile 6 is then installed.Finally face fire prevention furred ceiling lath 5 below tapping screw 9 by constant spacing fire prevention ceiling tile 6, the furred ceiling lath 5 of preventing fires are fixedly connected with cold formed steel joist 3, complete thus the light steel composite floor system of this floor structure construction.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the fire-resistant composite floor system structure of the light steel of prefabrication and assembly construction, is characterized in that: comprise successively from top to bottom light weight concrete construction surface layer (1), Autoclaved aerated concrete slabs layer, cold formed steel joist layer and fire prevention furred ceiling;
Described light weight concrete construction surface layer (1) is built on Autoclaved aerated concrete slabs layer;
Described Autoclaved aerated concrete slabs layer is comprised of identical Autoclaved aerated concrete slabs (2), the long side direction of Autoclaved aerated concrete slabs (2) aligns and is spliced to form a block length plate, the minor face of the minor face of the Autoclaved aerated concrete slabs (2) on every block length plate and the Autoclaved aerated concrete slabs (2) on adjacent long slab aligns one by one, and the joining place of Autoclaved aerated concrete slabs (2) upper surface arranges distribution reinforcement (8);
The cold formed steel joist (3) that described cold formed steel joist layer is arranged by parallel interval forms, cold formed steel joist (3) is distributed under the minor face of Autoclaved aerated concrete slabs (2) and below, the position parallel with minor face, described Autoclaved aerated concrete slabs layer and vertical being connected and fixed of cold formed steel joist (3);
Described fire prevention furred ceiling comprises fire prevention furred ceiling lath (5) and fire prevention ceiling tile (6), fire prevention furred ceiling lath (5) is distributed in the below of cold formed steel joist (3) arranged direction, fire prevention ceiling tile (6) is arranged in fire prevention furred ceiling lath (5) below, and cold formed steel joist (3) is fixedly connected with fire prevention furred ceiling;
Also comprise the cotton felt (4) of fire-proof and thermal-insulation, the fire prevention furred ceiling lath (5) that the side of the cotton felt of fire-proof and thermal-insulation (4) is positioned at cold formed steel joist (3) down either side above and with fire prevention furred ceiling lath (5) is fixedly connected with, and the centre of the cotton felt of fire-proof and thermal-insulation (4) is laid on fire prevention ceiling tile (6).
2. the fire-resistant composite floor system structure of the light steel of a kind of prefabrication and assembly construction according to claim 1, it is characterized in that: described cold formed steel joist (3) interconnects by tapping screw (9) and anti-pulling connector (7) with Autoclaved aerated concrete slabs layer, and described anti-pulling connector (7) is arranged in the short brink of Autoclaved aerated concrete slabs (2).
3. the fire-resistant composite floor system structure of the light steel of a kind of prefabrication and assembly construction according to claim 1, is characterized in that: the width of described Autoclaved aerated concrete slabs (2) is 600mm, and thickness is not less than 75mm, and length customizes according to Design of Floors size; What protuberate was set on Zhong，Yi Ge side, Liang Ge side, Autoclaved aerated concrete slabs (2) Shang Changbian place stings tooth (13), arranges and the groove (14) of stinging tooth (13) and mating on another side; Long edge position at Autoclaved aerated concrete slabs (2) upper surface is provided with corner cut (12); The side at the minor face place on Autoclaved aerated concrete slabs (2) is provided with circular groove (11); In the inside of Autoclaved aerated concrete slabs (2), is furnished with upper and lower two-layer reinforcing bar.
4. the fire-resistant composite floor system structure of the light steel of a kind of prefabrication and assembly construction according to claim 1, is characterized in that: described light weight concrete construction surface layer (1) adopts self-compacting concrete, and thickness is more than or equal to 25mm.
5. the fire-resistant composite floor system structure of the light steel of a kind of prefabrication and assembly construction according to claim 1, it is characterized in that: described cold formed steel joist (3) by two cross sections be C type or U-shaped cold formed steel adopt Two bors d's oeuveres back-to-back form splicing form, comprise the upper and lower wing and middle Mosaic face, and the thickness of described cold formed steel is between 0.6mm～3mm; Middle part at Mosaic face connects with screw along Mosaic face length direction, simultaneously at Mosaic face, near the upper and lower wing, sentences the spacing set-point solder joint (15) that is not less than 500mm and carries out spot welding connection.
6. the fire-resistant composite floor system structure of the light steel of a kind of prefabrication and assembly construction according to claim 1, is characterized in that: the spacing of adjacent two cold formed steel joists (3) is between 400mm～600mm.
7. cold formed steel composite floor system structure according to claim 1, is characterized in that: the cotton felt of described fire-proof and thermal-insulation (4) is not less than rock wool or aluminium silicate wool or the glass wool of 35mm for thickness.
8. cold formed steel composite floor system structure according to claim 1, is characterized in that: described fire prevention furred ceiling lath (5) and fire prevention ceiling tile (6) are not less than fire-resistant gypsum panel or the glass magnesium plate of 10mm for thickness.
9. the fire-resistant composite floor system structure of the light steel of a kind of prefabrication and assembly construction according to claim 2, it is characterized in that: described anti-pulling connector (7) comprises bolt (10), steel disc (16) and tapped steel plate (17), bolt (10) is fixing through being screwed into after steel disc (16) in steel plate (17), described steel disc (16) frame is in the upper surface of adjacent two Autoclaved aerated concrete slabss (2), and described steel plate (17) is welded and fixed with cold formed steel joist (3).
10. the fire-resistant composite floor system structure of the light steel of a kind of prefabrication and assembly construction according to claim 2, it is characterized in that: described anti-pulling connector (7) comprises with the L shaped bolt (18) of nut and steel disc (16), described L shaped bolt (18) passes steel disc (16) afterwards and cold formed steel joist (3) is welded and fixed, and described steel disc (16) frame is in the upper surface of adjacent two Autoclaved aerated concrete slabss (2).
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| CN106149940A (en) * | 2015-03-25 | 2016-11-23 | 上海钢之杰钢结构建筑系统有限公司 | Assembled floor system based on cold bending thin wall steel construction and cement fibrolite plate |
| CN109162397A (en) * | 2018-10-23 | 2019-01-08 | 南京林业大学 | A kind of air entrained concrete tongue and groove floor system with ribbing and assembly method |
| CN109162397B (en) * | 2018-10-23 | 2024-03-05 | 南京林业大学 | Ribbed aerated concrete tongue-and-groove floor system and assembly method |
| CN110878608A (en) * | 2019-11-27 | 2020-03-13 | 山东建筑大学 | Light composite reinforced prefabricated floor slab covered by calcium silicate board and floor system formed by same |
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| CN103510649B (en) | 2015-07-29 |
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