CN101793070A - Hollow floor system filled with an air-filling bag and construction method thereof - Google Patents
Hollow floor system filled with an air-filling bag and construction method thereof Download PDFInfo
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- CN101793070A CN101793070A CN201010128745A CN201010128745A CN101793070A CN 101793070 A CN101793070 A CN 101793070A CN 201010128745 A CN201010128745 A CN 201010128745A CN 201010128745 A CN201010128745 A CN 201010128745A CN 101793070 A CN101793070 A CN 101793070A
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Abstract
The invention relates to a hollow floor system filled with an air-filling bag and a construction method thereof, belonging to the field of the structure of the common building. The hollow floor system consists of the air-filling bag (1), upper steel bars (2), lower steel bars (3), hidden girder steel bars (4) and concrete (5), wherein the air-filling bag (1) is positioned among the upper steel bars (2), the lower steel bars (3) and the hidden girder steel bars (4); a bag wall (8) of the air-filling bag (1) consists of four side walls (9), an upper wall (10) and a lower wall (11); the shapes of at least two side walls (9) adjacent to the hidden girder steel bars (4) in the air-filling bag (1) are planes; the shapes of the upper wall (10) and the lower wall (11) are heaved-outward arc surfaces; and positioning pieces (12) are arranged among the inner sides of the side walls (9) so as to ensure that the two side walls (9) are parallel mutually. The hollow floor system has large span, better reliability, earthquake resistance and crack resistance, and good economy and applicability.
Description
(1) technical field
The present invention relates to a kind of reinforced concrete hollow floor structure, especially a kind of hollow building cover and job practices thereof of filling with gas cell belongs to buildings in general structure field.
(2) background technology
At building field, along with the large-span concrete structure is increasing, increasing floor adopts the hollow building cover structure technology.Sometimes in order to reduce dead load or to strengthen concrete insulation, heat insulation, sound insulation, damping effect, need place some lightweight fillers in the concrete the inside.Come the instead of part concrete can not influence the stress performance of structure substantially with lightweight filler, but the deadweight that can alleviate structure greatly.
From the construction angle, construction most convenient when the cross sectional shape of packing material is circle or polygon, concrete is built closely knit easily.In " concrete thin-wall cylindrical shell member " (ZL91031113.3) " fibre reinforced hollow thin-wall tube for filling in bar reinforced concrete and manufacture method thereof " (ZL99115649.8) and in " having the light porous material obturator that multiple cross sectional shape is used for concrete " (ZL02293406.5) etc. early stage correlation technique, packing material cross sectional shape circular or near circular.But this cross sectional shape hollow building cover is that hollow rate is less, and is economical relatively poor.
From mechanics principle, the desirable cross sectional shape of packing material is a rectangle, the hollow rate maximum that can make superstructure of this shape, and structure is the lightest.But the greatest drawback of this cross sectional shape packing material is: can't guarantee that the concreting below the packing material is closely knit.Therefore, Mr. Wang Benmiao has invented " thin wall box in-situ poured concrete hollow slab thin-wall box body " (ZL02210207.0), this thin-wall box body is a tabular, seal with top, bottom panel by perisporium, at the casing axis of centres to hollow section is set, connect box top, bottom panel, the centre bore of hollow section runs through top, bottom panel, and concrete can be closely knit with the concreting below the casing by hollow section.But the casing central hollow tube is provided with, and it is stressed to make concrete in the hollow section not participate in any structure, just increases the deadweight of superstructure.Afterwards, I have invented " a kind of lightweight foam material filling member with the hard enhancement Layer " (ZL200420077923.9), the upper and lower surface configuration of packing material is broken line or camber line, though it is smaller that the hollow rate of superstructure is compared with the square-section, can guarantee concrete construction quality well.Mr. Wang Benmiao had applied for two appearance designs afterwards again, be respectively (ZL200530117113.1) " casing (fillet) " and (ZL200530117112.7) " casing (right angle) ", in above-mentioned appearance design, the upper and lower surface design of casing is become cambered surface, but this shape is suitable for GRC class material.
On hollow building cover packing material material, several big classes such as metal material, high-strength cement goods (GRC), rubber or plastic products are roughly arranged, pluses and minuses are respectively arranged during use.The metal bellows cost is higher, and foot-operated the rubbing in when construction cause bellows seaming cracking easily, and electricity, gas welding carry out operation and may burn hole if be close to bellows simultaneously.The hollow section deadweight of being made by fragile material (high-strength cement etc.) is bigger, and water absorption rate is higher, and is cracked easily when withstanding shocks load and stacking weight.Rubber or plastic thin-wall tube need to strengthen wall thickness and cause cost higher if will keep certain intensity.Therefore the hollow building cover that develops the filling of air filling type material has a good application prospect.
At present the technology that adopts the inflation mode to form packing material has: " a kind of inflation light-wall pipe that plays filling effect that is used for concrete " (ZL02293407.3), but this kind packing material cross sectional shape be a circle, formed hollow building cover hollow rate is lower." the making job practices of cast-in-situ reinforced concrete hollow floor " (ZL200510020286.0), this method has adopted a kind of flexible formation core of inflating with exhaust, when laying the installation floor bar, with this moulding core along distributing bar direction equidistant placement in floor bar and parallel with steel bar stress, to carry out concreting after the inflation of moulding core, and in floor bar and beam steel binding site reservation ater-casting, gas in the moulding core capsule is discharged, and the moulding core extracted out through the ater-casting from steel concrete, finish building of ater-casting at last.The method only is fit to one-way slabs, and hollow rate is not high yet, has only 28.5%～39.6%.Mr.'s Qiu Zeyou patented technology " a kind of inflation mould component for concrete filling " (ZL200710200791.2), " a kind of inflating mould for concrete filling " (ZL200710200852.5), " a kind of inflating mould for concrete filling " be each face that constitutes obturator by two-layer covering inflation back (ZL200710200795.0), for a hexahedron, want the covering of 12 faces, relatively waste material.
In above-mentioned numerous technology, different shortcomings is arranged respectively.In this case, develop that a kind of hollow rate is big, the concrete hollow building roof of filling with gas cell of easy construction has become current urgent problem.
(3) summary of the invention
In the prior art, exist the hollow building cover hollow rate low, stressed unreasonable, the packing material cost is higher or problem such as inconvenience is installed, the object of the present invention is to provide a kind of hollow building cover and job practices thereof of filling with gas cell, this hollow building cover is stressed rationally, and hollow rate is big, while is construction install convenience again, can guarantee concrete pouring quality again.
For achieving the above object, the technical solution used in the present invention is: a kind of hollow building cover of filling with gas cell is provided, it is by gas cell, top reinforcement, lower floor's reinforcing bar, dark beam steel and concrete constitute, gas cell is between top reinforcement and lower floor's reinforcing bar and dark beam steel, the cyst wall of gas cell is by four sidewalls, a slice upper wall and a slice lower wall are formed, after injecting Compressed Gas, gas cell be shaped as hexahedron, the plane that it is characterized in that in the gas cell serving as reasons at least two sidewall shape adjacent depression and elevated regions form with dark beam steel, upper wall and lower wall be shaped as the cambered surface of outwards heaving, guarantee that by keeper is set these two sidewalls are parallel to each other between the inboard of sidewall.
The job practices of a kind of hollow building cover of filling with gas cell of the present invention is: the cyst wall that cuts gas cell according to design drawing, stick with glue or cyst wall is sewed together with suturing with thread management or rivet ways of connecting, reinforcement is installed on cyst wall, reinforcement is provided with Connection Block, be fixed on mode on the Connection Block by termination with keeper, fix the position between two sidewalls that are parallel to each other, inner surface brushing fluid sealant or stickup diaphragm seal at different parts cyst wall interface, injecting gas in gas cell, colligation lower floor reinforcing bar and dark beam steel, arrangement prestress muscle in dark beam steel, gas cell is placed between lower floor reinforcing bar top and the dark beam stirrup, and the colligation top reinforcement is installed isolating pad, carry out anti-floating and handle concreting.
The invention is characterized in the gas cell and dark adjacent two inside sidewalls that are parallel to each other of beam steel between be provided with twice or the above keeper of twice, keeper is parallel or arranged in a crossed manner.Under the effect of Compressed Gas, air bag has the trend of outside distortion.In order to guarantee that at least two sides of gas cell can form approximate plane, will in gas cell, increase constraint between two inside sidewalls.Keeper can retrain the outwards trend of distortion of sidewall, and in keeper constraint place, cyst wall will cave inward, and in the unconfinement district, cyst wall then continues to keep the shape to outer lug.Along with the enough certain quantity of keeper, the sidewall of gas cell can be restricted to the shape that approaches a plane, and guarantee that two relative sidewalls are parallel to each other.Keeper between relative two sidewalls all be arranged in parallel usually, also can be arranged in a crossed manner.
The invention is characterized in the oblique keeper that is provided with between two inside sidewalls that intersect the position in the gas cell.Between crossing two sidewalls in position, also can limit the outwards trend of distortion of sidewall with the oblique keeper that is provided with in two sidewalls angle roughly all at 45, but only on the corner subrange is effectively interior usually for this setup.
The invention is characterized on the cyst wall of gas cell reinforcement has been installed, reinforcement is reinforcing band or reinforced sheet, and reinforcement is provided with Connection Block, and each termination of keeper all is fixed on the Connection Block.Keeper can directly hang on the cyst wall of gas cell, but when cyst material intensity is not high, after the inflation, under bigger local action of pulling stress, causes the cyst wall breakage easily; Therefore can reduce the tensile stress of cyst wall by reinforcement.When adopting reinforcing band to strengthen, the reinforcing band that is positioned on the sidewall can be horizontally disposed with, and also can vertically be provided with.
The invention is characterized in the inner surface brushing fluid sealant of gas cell different parts cyst wall interface or paste diaphragm seal.Different parts cyst wall interface all is the gas cell key position of gas leakage easily usually, at these positions, should take special anti-gas-leak measure.
The invention is characterized between gas cell and the dark beam steel isolating pad is installed.The purpose of isolating pad is that assurance steel bar stress and gas cell can effectively be isolated, and guarantees the bond stress of reinforcing bar, prevents corrosion of steel bar simultaneously, satisfies the durability of structures requirement.The isolating pad shape can be block, also can be strip.Spacer material can be metal, rigid plastics, stone material or cement mortar.Isolating pad can be the special accessory of making, and also can replace with the reinforcement on the gas cell cyst wall.
The invention is characterized between gas cell and top reinforcement and the lower floor's reinforcing bar isolating pad is installed.
The invention is characterized in that presstressed reinforcing steel is arranged in the dark beam steel, used presstressed reinforcing steel is unbonded prestressing tendon or bonded prestressed tendon or delayed bonding prestressed tendon.
After adopting such scheme, the present invention compared with prior art has following beneficial effect:
Experimental study shows, when each side of packing material is perpendicular, the solid superstructure of the anti-bending strength of hollow building cover and same thickness is very nearly the same, shear behavior is with also very nearly the same with the hollow building cover that circular hollow tube is filled, the packing material side is arc surface, but the hollow rate of preceding a kind of hollow building cover is bigger than a kind of hollow building cover in back, it is light that the deadweight of superstructure ground is also wanted, so technical-economic index is better.At least two sidewall shape adjacent with dark beam steel are similar to a plane in the gas cell of the present invention, and the shape approximation of upper wall and lower wall guarantees that by keeper is set these two sidewalls are parallel to each other in the cambered surface of outwards heaving between the inboard of sidewall.At least two sidewalls are parallel to each other, and can guarantee that superstructure is stressed rationally, and higher hollow rate is arranged again simultaneously.Under the effect of Compressed Gas, under unconfined situation, the shape of gas cell upper wall and lower wall will outwards be heaved the formation cambered surface naturally.The advantage of lower camber side is that to be convenient to concreting closely knit, and last cambered surface then forms the structure of arch in the part of hollow building cover, can improve the partial pressing and the anti-impact of hollow building cover greatly and cut ability.A kind of hollow building cover of filling of the present invention with gas cell, cross sectional shape meets the mechanics requirement, under the prerequisite that guarantees structure stress, can improve the hollow rate of superstructure as much as possible, can guarantee concrete pouring quality again, production, transportation and the installation of gas cell simultaneously is all very convenient, and the anti shock and vibration performance is good.This hollow building cover span is big, in light weight, sound insulation, good heat-insulation effect, and reliability of structure, shock resistance, crack resistance are also better.The present invention has excellent economy and applicability, and the development of Building technology is played a driving role.
(4) description of drawings
The present invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the profile construction schematic diagram of a kind of hollow building cover of filling with gas cell of the present invention.
Fig. 2 is the vertical cross section organigram of gas cell of the present invention.
Fig. 3 is the horizontal profile organigram of gas cell of the present invention.
Fig. 4 is the keeper that be arranged in parallel between relative two sidewalls in gas cell position among the present invention.
Fig. 5 is a keeper arranged in a crossed manner between relative two sidewalls in gas cell position among the present invention.
Fig. 6 is the oblique keeper that is provided with between two sidewalls that intersect the gas cell position among the present invention.
Fig. 7 is the schematic diagram of reinforcing band on the gas cell cyst wall among the present invention.
Fig. 8 is the schematic diagram of reinforced sheet on the gas cell cyst wall among the present invention.
Fig. 9 is a reinforcement drawing on the gas cell cyst wall among the present invention.
Among the figure: 1. gas cell, 2. top reinforcement, 3. lower floor's reinforcing bar, 4. dark beam steel, 5. concrete, 6. isolating pad, 7. presstressed reinforcing steel, 8. cyst wall, 9. sidewall, 10. upper wall, 11. lower walls, 12. keeper, 13. reinforcements, 14. reinforcing bands, 15. reinforced sheets, 16. Connection Blocks.
(5) specific embodiment
The present invention realizes in such a way:
At Fig. 1, Fig. 2, in embodiment illustrated in fig. 3, a kind of hollow building cover of filling with gas cell is by gas cell (1), top reinforcement (2), lower floor's reinforcing bar (3), dark beam steel (4) and concrete (5) constitute, gas cell (1) is positioned between top reinforcement (2) and lower floor's reinforcing bar (3) and the dark beam steel (4), the cyst wall (8) of gas cell (1) is by four sidewalls (9), a slice upper wall (10) and a slice lower wall (11) are formed, after injecting Compressed Gas, gas cell (1) be shaped as hexahedron, at least two sidewall (9) shape approximations adjacent with dark beam steel (4) are in a plane in the gas cell (1), the shape approximation of upper wall (10) and lower wall (11) guarantees that by keeper (12) is set these two sidewalls (9) are parallel to each other in the cambered surface of outwards heaving between the inboard of sidewall (9).
In the embodiment shown in fig. 1, between gas cell (1) and the dark beam steel (4) isolating pad (6) is installed, isolating pad (6) can be the special accessory of making, and also can replace with the reinforcement (13) on the gas cell cyst wall (8).
In the embodiment shown in fig. 1, between gas cell (1) and top reinforcement (2) and the lower floor's reinforcing bar (3) isolating pad (6) is installed.
In the embodiment shown in fig. 1, presstressed reinforcing steel (7) is arranged in the dark beam steel (4), and used presstressed reinforcing steel (4) is unbonded prestressing tendon or bonded prestressed tendon or delayed bonding prestressed tendon.
In embodiment illustrated in fig. 2, the inner surface brushing fluid sealant of gas cell (1) different parts cyst wall (8) interface or stickup diaphragm seal.
Fig. 4, embodiment illustrated in fig. 5 in, be provided with twice or the above keeper (12) of twice in the gas cell (1) and between dark adjacent two sidewalls (9) inboard that is parallel to each other of beam steel (4), keeper (12) is parallel or arranged in a crossed manner.
In the embodiment shown in fig. 6, the oblique keeper (12) that is provided with between two sidewalls (9) inboard that intersect the position in the gas cell (1).
Fig. 7, Fig. 8, embodiment illustrated in fig. 9 in, reinforcement (13) has been installed on the cyst wall of gas cell (8), reinforcement is reinforcing band (14) or reinforced sheet (15), and reinforcement (13) is provided with Connection Block (16), and each termination of keeper (12) all is fixed on the Connection Block (16).
The job practices of a kind of hollow building cover of filling with gas cell of the present invention is: the cyst wall (8) that cuts gas cell (1) according to design drawing, stick with glue or cyst wall (8) is sewed together with suturing with thread management or rivet ways of connecting, go up installation reinforcement (13) at cyst wall (8), reinforcement (13) is provided with Connection Block (16), be fixed on mode on the Connection Block (16) by termination with keeper (12), fix the position between two sidewalls (9) that are parallel to each other, inner surface brushing fluid sealant or stickup diaphragm seal at different parts cyst wall (8) interface, injecting gas in gas cell (1), colligation lower floor reinforcing bar (3) and dark beam steel (4), arrangement prestress muscle (7) in dark beam steel (4), gas cell (1) is placed between lower floor's reinforcing bar (3) top and the dark beam stirrup (4), colligation top reinforcement (1), isolating pad (6) is installed, carry out anti-floating and handle concreting (5).
Claims (9)
1. hollow building cover of filling with gas cell, it is by gas cell (1), top reinforcement (2), lower floor's reinforcing bar (3), dark beam steel (4) and concrete (5) constitute, gas cell (1) is positioned between top reinforcement (2) and lower floor's reinforcing bar (3) and the dark beam steel (4), the cyst wall (8) of gas cell (1) is by four sidewalls (9), a slice upper wall (10) and a slice lower wall (11) are formed, after injecting Compressed Gas, gas cell (1) be shaped as hexahedron, it is characterized in that at least two sidewalls (9) adjacent with dark beam steel (4) are shaped as the plane of being made up of depression and elevated regions in the gas cell (1), upper wall (10) and lower wall (11) be shaped as the cambered surface of outwards heaving, guarantee that by keeper (12) is set these two sidewalls (9) are parallel to each other between the inboard of sidewall (9).
2. a kind of hollow building cover of filling according to claim 1 with gas cell, it is characterized in that being provided with twice or the above keeper (12) of twice in the gas cell (1) and between dark adjacent two sidewalls (9) inboard that is parallel to each other of beam steel (4), keeper (12) is parallel or arranged in a crossed manner.
3. a kind of hollow building cover of filling according to claim 1 with gas cell, the oblique keeper (12) that is provided with between two sidewalls (9) inboard that it is characterized in that intersecting the middle position of gas cell (1).
4. a kind of hollow building cover of filling according to claim 1 with gas cell, it is characterized in that on the cyst wall (8) of gas cell reinforcement (13) being installed, reinforcement is reinforcing band (14) or reinforced sheet (15), reinforcement (13) is provided with Connection Block (16), and each termination of keeper (12) all is fixed on the Connection Block (16).
5. a kind of hollow building cover of filling with gas cell according to claim 1 is characterized in that the inner surface brushing fluid sealant of gas cell (1) different parts cyst wall (8) interface or pastes diaphragm seal.
6. a kind of hollow building cover of filling according to claim 1 with gas cell, it is characterized in that between gas cell (1) and the dark beam steel (4) isolating pad (6) being installed, isolating pad (6) is the special accessory of making or replaces with the reinforcement (13) on the gas cell cyst wall (8).
7. a kind of hollow building cover of filling with gas cell according to claim 1 is characterized in that between gas cell (1) and top reinforcement (2) and the lower floor's reinforcing bar (3) isolating pad (6) being installed.
8. a kind of hollow building cover of filling with gas cell according to claim 1 is characterized in that presstressed reinforcing steel (7) is arranged in the dark beam steel (4), and used presstressed reinforcing steel (4) is unbonded prestressing tendon or bonded prestressed tendon or delayed bonding prestressed tendon.
9. the job practices of a kind of hollow building cover of filling with gas cell according to claim 1, it is characterized in that: the cyst wall (8) that cuts gas cell (1) according to design drawing, stick with glue or cyst wall (8) is sewed together with suturing with thread management or rivet ways of connecting, go up installation reinforcement (13) at cyst wall (8), reinforcement (13) is provided with Connection Block (16), be fixed on mode on the Connection Block (16) by termination with keeper (12), fix the position between two sidewalls (9) that are parallel to each other, inner surface brushing fluid sealant or stickup diaphragm seal at different parts cyst wall (8) interface, injecting gas in gas cell (1), colligation lower floor reinforcing bar (3) and dark beam steel (4), arrangement prestress muscle (7) in dark beam steel (4), gas cell (1) is placed between lower floor's reinforcing bar (3) top and the dark beam stirrup (4), colligation top reinforcement (1), isolating pad (6) is installed, carries out anti-floating and handle concreting (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128745A CN101793070A (en) | 2010-03-22 | 2010-03-22 | Hollow floor system filled with an air-filling bag and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010128745A CN101793070A (en) | 2010-03-22 | 2010-03-22 | Hollow floor system filled with an air-filling bag and construction method thereof |
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| CN101793070A true CN101793070A (en) | 2010-08-04 |
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| CN201010128745A Pending CN101793070A (en) | 2010-03-22 | 2010-03-22 | Hollow floor system filled with an air-filling bag and construction method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912912A (en) * | 2011-12-26 | 2013-02-06 | 周立成 | Matrix for filling cast-in-situ concrete |
| CN102912913A (en) * | 2011-12-26 | 2013-02-06 | 周立成 | Cast-in-place concrete filling tire body |
| CN103046679A (en) * | 2013-01-22 | 2013-04-17 | 江苏银环新型建材科技有限公司 | Reinforcement steel bar template for concrete molding |
| CN104005501A (en) * | 2014-04-30 | 2014-08-27 | 王本淼 | Cast-in-place hollow floor system with holes composed of steel meshes and organic objects |
| CN104196161A (en) * | 2014-09-17 | 2014-12-10 | 谭泽文 | Construction method for cast-in-situ hollow floorslab and airbag-type core framework thereof |
| CN104453051A (en) * | 2014-11-25 | 2015-03-25 | 盐城工学院 | Airbag brick clamping TRC-textile reinforced concrete double-layer thin shell roof |
| CN105386553A (en) * | 2015-12-11 | 2016-03-09 | 中铁城建集团北京工程有限公司 | Cast-in-place hollow floor structure based on GFM (Gel Filtration Medium) inflatable inner molds and construction method |
| CN105619593A (en) * | 2013-08-21 | 2016-06-01 | 河南行知专利服务有限公司 | Device for prefabricating hollow concrete structure |
| CN107327041A (en) * | 2017-08-18 | 2017-11-07 | 温州市万丰建设工程有限公司 | A kind of Antiseismic house builds structure |
| CN107355038A (en) * | 2017-08-21 | 2017-11-17 | 深圳市道同创新科技开发有限公司 | There are the assembled hollow floor and its construction method of the removable core of girt strip |
| CN107700846A (en) * | 2017-11-14 | 2018-02-16 | 中建四局第六建筑工程有限公司 | A kind of post-cast strip concrete arrester and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912912B (en) * | 2011-12-26 | 2015-10-21 | 周立成 | A kind of carcass for filling cast-in-situ concrete |
| CN102912913A (en) * | 2011-12-26 | 2013-02-06 | 周立成 | Cast-in-place concrete filling tire body |
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| CN103046679A (en) * | 2013-01-22 | 2013-04-17 | 江苏银环新型建材科技有限公司 | Reinforcement steel bar template for concrete molding |
| CN105619593A (en) * | 2013-08-21 | 2016-06-01 | 河南行知专利服务有限公司 | Device for prefabricating hollow concrete structure |
| CN104005501A (en) * | 2014-04-30 | 2014-08-27 | 王本淼 | Cast-in-place hollow floor system with holes composed of steel meshes and organic objects |
| CN104196161A (en) * | 2014-09-17 | 2014-12-10 | 谭泽文 | Construction method for cast-in-situ hollow floorslab and airbag-type core framework thereof |
| CN104196161B (en) * | 2014-09-17 | 2017-02-15 | 谭泽文 | Construction method for cast-in-situ hollow floorslab and airbag-type core framework thereof |
| CN104453051A (en) * | 2014-11-25 | 2015-03-25 | 盐城工学院 | Airbag brick clamping TRC-textile reinforced concrete double-layer thin shell roof |
| CN104453051B (en) * | 2014-11-25 | 2017-05-17 | 盐城工学院 | Airbag brick clamping TRC-textile reinforced concrete double-layer thin shell roof |
| CN105386553A (en) * | 2015-12-11 | 2016-03-09 | 中铁城建集团北京工程有限公司 | Cast-in-place hollow floor structure based on GFM (Gel Filtration Medium) inflatable inner molds and construction method |
| CN107327041A (en) * | 2017-08-18 | 2017-11-07 | 温州市万丰建设工程有限公司 | A kind of Antiseismic house builds structure |
| CN107355038A (en) * | 2017-08-21 | 2017-11-17 | 深圳市道同创新科技开发有限公司 | There are the assembled hollow floor and its construction method of the removable core of girt strip |
| CN107700846A (en) * | 2017-11-14 | 2018-02-16 | 中建四局第六建筑工程有限公司 | A kind of post-cast strip concrete arrester and its application method |
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Application publication date: 20100804 |