CN103031917A - Reinforced concrete prefabricated laminated slab with truss rib - Google Patents
Reinforced concrete prefabricated laminated slab with truss rib Download PDFInfo
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- CN103031917A CN103031917A CN2012105927842A CN201210592784A CN103031917A CN 103031917 A CN103031917 A CN 103031917A CN 2012105927842 A CN2012105927842 A CN 2012105927842A CN 201210592784 A CN201210592784 A CN 201210592784A CN 103031917 A CN103031917 A CN 103031917A
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Abstract
The invention provides a reinforced concrete prefabricated laminated slab with a truss rib. The reinforced concrete prefabricated laminated slab comprises a bottom plate and a longitudinal truss rib which is perpendicular to the bottom plate, wherein a light steel truss or a normal reinforcing steel bar truss is arranged in the truss rib; the truss rib comprises an upper chord member, a lower chord member, a plurality of truss web members and a plurality of holes; the lower chord member is parallel to the upper chord member and is combined with the bottom plate; the truss web members are connected between the upper chord member and the lower chord member; and the holes are formed among the web members. The truss rib is formed by splicing a pair of Z-shaped latticed steel, wherein the Z-shaped latticed steel is provided with two parallel flanges and a plurality of profile steel web members which are connected between the flanges and are arranged in parallel at intervals; and the pair of Z-shaped latticed steel is combined in a laminating manner. The prefabricated laminated slab is spliced on site and is arranged on the longitudinal upper reinforcing steel bar and a transverse up-down stressing reinforcing steel bar and then concrete is poured. The laminated slab is suitable for structures such as a laminated slab floor and balcony.
Description
Technical field
The present invention relates to a kind of prefabricated superimposed sheet in the building engineering field, especially a kind of reinforced concrete prefabricated superimposed sheet with the truss rib.Truss rib inside can be provided with light steel truss or plain bars truss.
Background technology
At present, traditional Structural Engineering is residential project especially, floor adopts common monolithic reinforced concrete structure mostly, need to install first template and support system during construction, again assembling reinforcement, lay equipment installation in the plate, concreting then, again stripping and support system after concrete strength reaches designing requirement.The desired field procedure of this traditional construction technology is numerous and diverse, long construction period.
Continuous expansion along with the infrastructure scale; improving constantly of labour cost; and increasingly strict to the requirement of environmental protection, above-mentioned traditional construction technology more and more can not satisfy the requirement of China's sustainable development, also is difficult to adapt to the housing industrialization policy that China deepens constantly popularization.
For this reason, prefabricated superimposed sheet technology begins to be subject to the attention of industry, is necessary to develop to be convenient to production and processing, to be easy to construction and installation and the good novel prefabricated superimposed sheet of structural performance.
Summary of the invention
The invention reside in provides a kind of novel reinforced concrete prefabricated superimposed sheet with the truss rib.
The advantages such as that described superimposed sheet has is large from heavy and light, longitudinal rigidity, easy construction, good integrity, bidirectional stress performance are good.
The invention provides a kind of reinforced concrete prefabricated superimposed sheet with the truss rib.Described prefabricated superimposed sheet comprises reinforced concrete floor and the longitudiual truss rib vertical with described base plate, and wherein said truss rib within it section is provided with light steel truss or plain bars truss.
Described truss rib comprise upper chord, parallel with described upper chord and with lower chord that described base plate is combined and be arranged at described upper chord and described lower chord between a plurality of truss rib web members, form a plurality of holes between wherein said a plurality of truss rib web members.
Described base plate interior is provided with reinforcing bar, and it comprises as the longitudinal reinforcement of main principal rod and the structure muscle of vertical direction.
The described light steel truss that described truss rib inside is provided with is to be formed by a pair of Z-type lattice configuration steel assembling combination, wherein said Z-type lattice configuration steel has two edges of a wing that are parallel to each other and is connected to a plurality of shaped steel web members that parallel interval is arranged between the described edge of a wing, and described a pair of Z-type lattice configuration steel makes up in the superimposed mode of positive and negative.Wherein said Z-type lattice configuration steel is integrally formed by the plane out-draw by the band steel, and described have the parallel slit of many cuttings in order to form afterwards required shaped steel configuration in stretching before being stretched with steel.
As required, described prefabricated superimposed sheet can comprise together, twice or the described truss rib of multiple tracks.The vertical rib of multiple tracks can further increase the rigidity of precast plate, and reduces piece, can improve the globality of plate, and accelerates speed of application.
The precast plate that is arranged so that of truss rib has larger rigidity and supporting capacity, reduces the distortion in lifting and installation process.Because the overall height of truss rib is identical with the gross thickness of prefabricated superimposed sheet, the hole of truss rib is relatively large, transverse reinforcement is convenient to wear in section within it, be convenient to simultaneously the laying of equipment installation in the floor, can form the good prefabricated superimposed sheet of bidirectional stress performance behind layout top longitudinal reinforcement and the concreting.
For strengthening the applicability of described superimposed sheet, when total floor thickness during greater than the overall height of truss rib, also can above the truss rib, add certain thickness overlapping layers is set.
The present invention also provides installation, splicing and the casting method of above-mentioned prefabricated superimposed sheet.Described prefabricated superimposed sheet can be spliced to form the amalgamation superimposed sheet by adjacent side.Contiguous prefabricated plate side splicing place, the concrete floor section's chamfering of can setting a trap, contiguous prefabricated plate preferably can leave the slit between the side, and can be provided with in described slit along the colligation muscle of described slit direction.Vertical colligation muscle is set and can in subsequent technique, adopts in the plate seam and hang the mould concreting, with the globality of reinforcement plate.
After the assembly unit, the transversely steel bar stress vertical with described truss rib and horizontal lower stress reinforcing bar are arranged respectively with the bottom in the top in described hole, and are avoiding the truss rib place layout vertical upper reinforcement parallel with described truss rib.
Poured in place concrete forms the thickness bidirectional stress superimposed sheet consistent with described truss rib overall height.
The present invention has following advantage:
(1) the steel concrete rib of employing truss form makes its reasonable stress, and longitudinal rigidity and bearing capacity are larger, and is not yielding in transportation and hoisting process.
(2) bore hole size that forms on the truss rib is larger, can effectively alleviate the precast plate deadweight, make things convenient for the construction that wears of the interior equipment installation of reinforcing bar and floor, and pass is simple, is convenient to plant produced and processing.
(3) adjacent panel side splicing place, the base plate section's chamfering of can setting a trap can be stayed the plate seam between precast plate during site operation, vertical colligation muscle is set in the plate seam and adopts and hang mould concreting, good integrity.
(4) gross thickness of prefabricated superimposed sheet is consistent with the overall height of precast plate truss rib, and easy construction is easy to guarantee the planeness of thickness and the plate face of superimposed sheet improve construction quality.
(5) the reinforcing bar configuration rationally guarantees behind the concreting that at the scene cracking resistance and the bidirectional stress performance of superimposed sheet is good.
(6) light steel truss of truss rib inside is made simple, saving material, can realize suitability for industrialized production.
(7) be combined with the bearing wall based on prefabricated units, can increase substantially industrialization level and the speed of application of construction work, reduce Site Template engineering and reinforced bar engineering, improve workmanship, meet the housing industrialization policy of country.
Description of drawings
Based on briefly introducing of aforementioned relevant summary of the invention, and according to the detailed description of aftermentioned for the specific embodiment of the invention, the accompanying drawing below this provides is in order to make technical scheme of the present invention and feature can be better understood.
Fig. 1 is the structural representation with the reinforced concrete prefabricated superimposed sheet of truss rib according to a kind of specific embodiment of the present invention.
Fig. 2 is the structural representation with the reinforced concrete prefabricated superimposed sheet of truss rib according to the another kind of specific embodiment of the present invention.
Fig. 3 and Fig. 4 have described the light steel truss structural representation that the truss rib inside of Fig. 1 or the reinforced concrete prefabricated superimposed sheet with the truss rib shown in Figure 2 is provided with, the a pair of Z-type lattice configuration steel that shows of Fig. 3 wherein, being used for assembling combination becomes light steel truss shown in Figure 4.
Fig. 5 has wherein also schematically shown reinforcement placement for by the twice amalgamation superimposed sheet schematic diagram that consists of with the reinforced concrete prefabricated superimposed sheet amalgamation of truss rib shown in Figure 1.
Fig. 6 A is the longitudinal profile schematic diagram of reinforced concrete prefabricated superimposed sheet after fluid concrete with the truss rib shown in Figure 5.
Fig. 6 B is the horizontal section schematic diagram of reinforced concrete prefabricated superimposed sheet after fluid concrete with the truss rib shown in Figure 5.
The specific embodiment
For technical scheme of the present invention and specific features can be better understood, pin hereinafter is provided, and specific description of embodiments of the present invention, in order to content of the present invention and feature are described further.
Embodiment 1. is with the reinforced concrete prefabricated superimposed sheet of one truss rib
As shown in Figure 1, the reinforced concrete prefabricated superimposed sheet 100 with the truss rib of this example has truss rib 120 one.This superimposed sheet 100 comprises reinforced concrete floor 110 and the longitudiual truss rib 120 vertical with base plate 110, wherein truss rib 120 within it section be provided with light steel truss 420.
Described truss rib 120 comprise upper chord 121, parallel with upper chord 121 and and the lower chord 122 of base plate 110 combinations and be arranged at upper chord 121 and lower chord 122 between a plurality of truss rib web members 123, form a plurality of holes 124 between wherein said a plurality of truss rib web members 123.Preferably, described a plurality of hole 124 is shaped as triangle and/or trapezoidal.A plurality of holes 124 bight separately can be provided with the circular arc chamfering.
Described base plate 110 inside are provided with reinforcing bar, and it comprises as the longitudinal reinforcement 130 of main principal rod and the structure muscle 140 of vertical direction, according to requirement of engineering, and extended or end face or the side of not stretching out base plate 110 of longitudinal reinforcement 130 and/or structure muscle 140.
Light steel truss 420(Fig. 4 that truss rib 120 inside are provided with) be by a pair of Z-type lattice configuration steel 320(Fig. 3) form with the mode assembling combination of welding, wherein said Z-type lattice configuration steel 320 has two edges of a wing that are parallel to each other 321 and is connected to a plurality of shaped steel web members 323 that parallel interval is arranged between the described edge of a wing 321, and described a pair of Z-type lattice configuration steel 320 makes up in the superimposed mode of positive and negative.The cross sectional shape on the described edge of a wing 321 is band crimping shape (Fig. 3), like this, the part of the edge of a wing 321 contiguous a plurality of shaped steel web members 323 is vertical with a plurality of shaped steel web members 323 formed planes, and the bead portion on the edge of a wing 321 collapses into and a plurality of web member 323 formed plane parallel towards a plurality of shaped steel web members 323.The cross sectional shape on the described edge of a wing 321 also can be in-line, and the hole lattice between a plurality of shaped steel web members are shaped as parallelogram 324, and wherein the edge of a wing 321 is vertical with a plurality of shaped steel web members 323 formed planes.
Described Z-type lattice configuration steel 320 is integrally formed by the plane out-draw by the band steel, and described have the parallel slit of many cuttings in order to form afterwards required shaped steel configuration in stretching before being stretched with steel.
As required, the end face of described base plate 110 can be designed as pitted skin.The edge of base plate 110 can be provided with local chamfering 115.
In addition, the depth of section of described lower chord 122 can be designed as quite or is slightly larger than the thickness of described base plate 110.
Embodiment 2. is with the reinforced concrete prefabricated superimposed sheet of twice truss rib
As shown in Figure 2, the reinforced concrete prefabricated superimposed sheet 200 with the truss rib of this example has twice truss rib 120.This superimposed sheet 200 comprises reinforced concrete floor 110 and the twice longitudiual truss rib 120 vertical with base plate 110, wherein truss rib 120 within it section be provided with separately light steel truss 420.
Described truss rib 120 comprise upper chord 121, parallel with upper chord 121 and and the lower chord 122 of base plate 110 combinations and be arranged at upper chord 121 and lower chord 122 between a plurality of truss rib web members 123, form a plurality of holes 124 between wherein said a plurality of truss rib web members 123.Preferably, described a plurality of hole 124 is shaped as triangle and/or trapezoidal.A plurality of holes 124 bight separately can be provided with the circular arc chamfering.
Described base plate 110 inside are provided with reinforcing bar, and it comprises as the longitudinal reinforcement 130 of main principal rod and the structure muscle 140 of vertical direction, according to requirement of engineering, and extended or end face or the side of not stretching out base plate 110 of longitudinal reinforcement 130 and/or structure muscle 140.
Other structural element of this routine superimposed sheet 200 comprises the structure of the light steel truss 420 that truss rib 120 inside are provided with, and similar with described in the embodiment 1 given unnecessary details no longer one by one at this.
Embodiment 3. amalgamation superimposed sheets
As shown in Figure 5, the prefabricated superimposed sheet 100 that provides of embodiment 1 is spliced to form amalgamation superimposed sheet 500 with another superimposed sheet 100 by adjacent side.Leave slit 639 between the adjacent side of two superimposed sheets that amalgamation superimposed sheet 500 is included.Preferably, the width in described slit is that about 30mm is to about 100mm.
In described slit 639, be provided with along the colligation muscle 180 of described slit direction, in order to by hanging mould concreting 625, with the globality of the superimposed sheet that strengthens described splicing.
The scene installation of embodiment 4. superimposed sheets or assembly unit and concreting
As shown in Figure 5, prefabricated superimposed sheet 100 hoisted in position that embodiment 1 is provided, and assembling reinforcement.The transversely steel bar stress 150 vertical with truss rib 120 and horizontal lower stress reinforcing bar 160 are arranged respectively in top in hole 124 and bottom, and arrange the vertical upper reinforcement 170 parallel with truss rib 120 avoiding truss rib 120 places.
Assembly unit superimposed sheet (as described in Example 3) carries out the adjacent side splicing with two or more superimposed sheets 100, reserves 30～100mm plate seam between plate, in the plate seam vertical colligation muscle 180 is set.
Poured in place concrete shown in Fig. 6 A and 6B, forms the thickness bidirectional stress superimposed sheet consistent with described truss rib 120 overall heights.
The part is installed hangs mould and side form, build the overlapping layers concrete.Seam crossing adopts and hangs mould, treats that template installs, and concreting is to truss rib 2 top mark eminences.
In the description of this paper, product of the present invention and method are described as special shape, material or process sequence, and provide for illustrative purposes some detailed parameters for some specific embodiments.Yet, should be appreciated that these specifically describe to technical scheme generation restriction of the present invention; The change and the accommodation that is to say relevant shape, material or process sequence are still within the spirit and scope of the present invention involved.
The above-mentioned specific embodiment is that example is described and explanation for content of the present invention is carried out, and is not that scope of the present invention is carried out any restriction.Those skilled in the art uses equivalent structure that manual of the present invention and claim do or the variation of material, all should belong to protection scope of the present invention.
Claims (18)
1. the reinforced concrete prefabricated superimposed sheet with the truss rib is characterized in that, described superimposed sheet comprises reinforced concrete floor and the longitudiual truss rib vertical with described base plate, and wherein said truss rib within it section is provided with light steel truss or plain bars truss.
2. superimposed sheet according to claim 1, it is characterized in that, described truss rib comprise upper chord, parallel with described upper chord and with lower chord that described base plate is combined and be arranged at described upper chord and described lower chord between a plurality of truss rib web members, form a plurality of holes between wherein said a plurality of truss rib web members.
3. superimposed sheet according to claim 1, wherein said base plate interior is provided with reinforcing bar, it comprises as the longitudinal reinforcement of main principal rod and the structure muscle of vertical direction, according to requirement of engineering, extended or end face or the side of not stretching out described base plate of described longitudinal reinforcement and/or described structure muscle.
4. superimposed sheet according to claim 1, the described light steel truss that wherein said truss rib inside is provided with is to be formed by a pair of Z-type lattice configuration steel assembling combination, wherein said Z-type lattice configuration steel has two edges of a wing that are parallel to each other and is connected to a plurality of shaped steel web members that parallel interval is arranged between the described edge of a wing, and described a pair of Z-type lattice configuration steel makes up in the superimposed mode of positive and negative.
5. superimposed sheet according to claim 4, wherein said a pair of Z-type lattice configuration steel is that the mode assembling combination of welding forms.
6. superimposed sheet according to claim 4, the cross sectional shape on the wherein said edge of a wing is in-line, and the hole lattice between described a plurality of shaped steel web members are shaped as parallelogram, and the wherein said edge of a wing is vertical with the formed plane of described a plurality of shaped steel web members.
7. superimposed sheet according to claim 4, the cross sectional shape on the wherein said edge of a wing is band crimping shape, hole lattice between described a plurality of shaped steel web member are shaped as parallelogram, the part of the contiguous described a plurality of shaped steel web members in the wherein said edge of a wing is vertical with the formed plane of described a plurality of shaped steel web members, and the bead portion on the described edge of a wing collapses into and the formed plane parallel of described a plurality of web members towards described a plurality of shaped steel web members 323.
8. superimposed sheet according to claim 4, wherein said Z-type lattice configuration steel are integrally formed by the plane out-draw by the band steel, and described have the parallel slit of many cuttings in order to form afterwards required shaped steel configuration in stretching before being stretched with steel.
9. superimposed sheet according to claim 2, it comprises one or multi-channel described truss rib.
10. superimposed sheet according to claim 2, wherein said a plurality of holes be shaped as triangle and/or trapezoidal.
11. superimposed sheet according to claim 10, wherein said a plurality of holes bight separately is provided with the circular arc chamfering.
Section's chamfering 12. superimposed sheet according to claim 2, the edge of wherein said base plate can be set a trap.
13. superimposed sheet according to claim 2, the end face of wherein said base plate are pitted skin.
14. superimposed sheet according to claim 2, the depth of section of wherein said lower chord are quite or be slightly larger than the thickness of described base plate.
15. according to claim 2 or 9 described superimposed sheets, wherein said superimposed sheet and another superimposed sheet are spliced to form the amalgamation superimposed sheet by adjacent side.
16. superimposed sheet according to claim 15, leave the slit between the adjacent side of two superimposed sheets that wherein said amalgamation superimposed sheet is included, the width in described slit is that about 30mm is to about 100mm, and in described slit, be provided with along the colligation muscle of described slit direction, in order to by hanging the mould concreting, with the globality of the superimposed sheet that strengthens described splicing.
17. superimposed sheet according to claim 15, wherein said superimposed sheet is at the construction field (site) after the assembly unit, the transversely steel bar stress vertical with described truss rib and horizontal lower stress reinforcing bar are arranged respectively with the bottom in top in described hole, and avoiding the truss rib place layout vertical upper reinforcement parallel with described truss rib, thereby form the thickness bidirectional stress superimposed sheet consistent with described truss rib overall height behind the concreting at the scene.
18. superimposed sheet according to claim 15 when total floor thickness during greater than the overall height of described truss rib, additionally above described truss rib arranges certain thickness overlapping layers.
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| CN201210592784.2A CN103031917B (en) | 2012-12-31 | 2012-12-31 | A kind of reinforced concrete prefabricated superimposed sheet with truss rib |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103334495A (en) * | 2013-06-13 | 2013-10-02 | 南京长江都市建筑设计股份有限公司 | Prefabricated balcony connecting structure with steel trusses |
| CN103726600A (en) * | 2013-11-21 | 2014-04-16 | 智房科技股份有限公司 | Steel bar truss, steel bar truss floor bearing plate of steel bar truss, and steel bar truss composite slab of steel bar truss |
| CN103953147A (en) * | 2014-04-29 | 2014-07-30 | 清华大学 | Two-way sandwich panel for split mounting type reinforcing bar girder |
| CN104727438A (en) * | 2014-11-17 | 2015-06-24 | 马恒忠 | Novel industrialized production efficiently-assembled type building floor slab and manufacturing method |
| CN105756277A (en) * | 2015-10-30 | 2016-07-13 | 山东万斯达建筑科技股份有限公司 | Folded-plate truss concrete assembly |
| CN106703269A (en) * | 2016-12-30 | 2017-05-24 | 山东省建筑科学研究院 | Prestressed concrete superimposed sheet with steel trusses and manufacturing method |
| CN107322769A (en) * | 2017-07-03 | 2017-11-07 | 山东住工装配建筑有限公司 | A kind of combinable precast truss frame superimposed sheet plastic mould |
| CN107338896A (en) * | 2017-08-14 | 2017-11-10 | 汤显衡 | Steel plate truss-like bearing plate |
| CN108532808A (en) * | 2018-04-28 | 2018-09-14 | 刘鹏飞 | A kind of steel truss hollow pre-fabricated panels |
| CN108590026A (en) * | 2018-04-17 | 2018-09-28 | 昆明理工大学 | It is a kind of for " people " font armored concrete prefabricated panel of laminated floor slab and its superimposed sheet of making |
| CN109537789A (en) * | 2018-12-28 | 2019-03-29 | 上海欧本钢结构有限公司 | A kind of aperture clod wash rib superimposed sheet |
| CN109736499A (en) * | 2018-12-27 | 2019-05-10 | 浙江大经住工科技有限公司 | A kind of prefabricated superimposed sheet and its precasting process |
| CN110241960A (en) * | 2019-06-28 | 2019-09-17 | 上海欧本钢结构有限公司 | A kind of steel bar girder superimposed sheet to be winded up based on sheet steel |
| CN112031239A (en) * | 2020-09-03 | 2020-12-04 | 四川省佳宇建设集团有限公司 | Precast concrete composite floor slab and manufacturing method thereof |
| CN114482375A (en) * | 2022-02-22 | 2022-05-13 | 杭州江润科技有限公司 | Integral joint type reinforced concrete laminated slab and construction method |
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|---|---|---|---|---|
| CN103334495A (en) * | 2013-06-13 | 2013-10-02 | 南京长江都市建筑设计股份有限公司 | Prefabricated balcony connecting structure with steel trusses |
| CN103726600A (en) * | 2013-11-21 | 2014-04-16 | 智房科技股份有限公司 | Steel bar truss, steel bar truss floor bearing plate of steel bar truss, and steel bar truss composite slab of steel bar truss |
| CN103726600B (en) * | 2013-11-21 | 2015-11-18 | 智房科技股份有限公司 | Steel bar girder and steel bar truss floor support plate thereof and steel bar girder superimposed sheet |
| CN103953147A (en) * | 2014-04-29 | 2014-07-30 | 清华大学 | Two-way sandwich panel for split mounting type reinforcing bar girder |
| CN104727438A (en) * | 2014-11-17 | 2015-06-24 | 马恒忠 | Novel industrialized production efficiently-assembled type building floor slab and manufacturing method |
| CN104727438B (en) * | 2014-11-17 | 2017-02-22 | 马恒忠 | Industrialized production efficiently-assembled type building floor slab and manufacturing method |
| CN105756277A (en) * | 2015-10-30 | 2016-07-13 | 山东万斯达建筑科技股份有限公司 | Folded-plate truss concrete assembly |
| CN106703269A (en) * | 2016-12-30 | 2017-05-24 | 山东省建筑科学研究院 | Prestressed concrete superimposed sheet with steel trusses and manufacturing method |
| CN107322769A (en) * | 2017-07-03 | 2017-11-07 | 山东住工装配建筑有限公司 | A kind of combinable precast truss frame superimposed sheet plastic mould |
| CN107338896A (en) * | 2017-08-14 | 2017-11-10 | 汤显衡 | Steel plate truss-like bearing plate |
| CN108590026A (en) * | 2018-04-17 | 2018-09-28 | 昆明理工大学 | It is a kind of for " people " font armored concrete prefabricated panel of laminated floor slab and its superimposed sheet of making |
| CN108590026B (en) * | 2018-04-17 | 2021-04-09 | 昆明理工大学 | Inverted V-shaped reinforced concrete prefabricated bottom plate for laminated floor slab and laminated slab manufactured by same |
| CN108532808A (en) * | 2018-04-28 | 2018-09-14 | 刘鹏飞 | A kind of steel truss hollow pre-fabricated panels |
| CN109736499A (en) * | 2018-12-27 | 2019-05-10 | 浙江大经住工科技有限公司 | A kind of prefabricated superimposed sheet and its precasting process |
| CN109537789A (en) * | 2018-12-28 | 2019-03-29 | 上海欧本钢结构有限公司 | A kind of aperture clod wash rib superimposed sheet |
| CN110241960A (en) * | 2019-06-28 | 2019-09-17 | 上海欧本钢结构有限公司 | A kind of steel bar girder superimposed sheet to be winded up based on sheet steel |
| CN110241960B (en) * | 2019-06-28 | 2024-06-07 | 上海欧本钢结构有限公司 | Steel bar truss superimposed sheet based on steel sheet piece is string up |
| CN112031239A (en) * | 2020-09-03 | 2020-12-04 | 四川省佳宇建设集团有限公司 | Precast concrete composite floor slab and manufacturing method thereof |
| CN114482375A (en) * | 2022-02-22 | 2022-05-13 | 杭州江润科技有限公司 | Integral joint type reinforced concrete laminated slab and construction method |
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| CN103031917B (en) | 2016-04-06 |
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