CN107012985A - A kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder - Google Patents
A kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder Download PDFInfo
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- CN107012985A CN107012985A CN201710374746.2A CN201710374746A CN107012985A CN 107012985 A CN107012985 A CN 107012985A CN 201710374746 A CN201710374746 A CN 201710374746A CN 107012985 A CN107012985 A CN 107012985A
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- concrete
- small beam
- girder
- prefabricated
- steel
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional [3D] extent, e.g. lattice girders
- E04C5/065—Light-weight girders, e.g. with precast parts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides a kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder, and prefabricated girder is reinforced concrete structure, including the small beam body of concrete, small beam steel, and small beam steel part is embedded in concrete girder body to form embedded bar；Small beam steel part is stretched out to form top reserved steel bar above the small beam body of concrete；Small beam steel part is stretched out to form two ends reserved steel bar from the small beam body two ends of concrete；Two sides of the small beam body upper surface of concrete are to containing embedded bar in the concrete girder body formed respectively between the reserved steel bar of top below floor brick faying surface, floor brick faying surface；Small beam steel is triangular truss structure, including three truss are responsible for, some web members of truss frame for connecting supervisor.The present invention reduces the erection of a large amount of support shutterings, bed die and vertical support bar during floor slab construction, security is improved；Avoid cast-in-place girder and there is voiding problem, small beam steel uniformity is good, resistance to overturning is strong, rigidity is good.
Description
Technical field
The present invention relates to a kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder, belong to common buildings
Thing constructing technology field.
Background technology
At present, it is known it is widely used industry with civil buildings floor construction, essentially cast-in-place solid reinforced concrete slab and
Two kinds of precast hollow slab, using the former building, the rate of utilization of strength of its sound isolating and heat insulating performance difference and reinforced concrete is low, using the latter
Building, its structural integrity difference is unfavorable for antidetonation, and handling workload is big.
Great attention with building trade to energy-conserving and environment-protective, it is desirable to Development of Green Building, reduces building energy consumption conscientiously, goes out
Show various hollow brick laminated floor slabs, the laminated floor slab used at present is made up of porous brick and cast-in-situ floor, or first cast-in-place girder
Cast-in-situ floor again, work progress needs the small beam steel of the artificial colligation in scene, and labor intensive work efficiency, colligation quality is uneven, colligation
The small beam steel of shaping is rigidly poor, is easily deformed；Each small beam steel is both needed to set up bed die support, then with vertical flitch branch
Support, timber consumption is big；During integral cast-in-situ, the mobility of concrete slurry is limited to, sky easily occurs in the end for forming girder shape
Gap or voids and pits, influence the load-bearing of floor；And the complicated construction technique of whole building floor, enforcement difficulty is big, long in time limit, needs
Substantial amounts of support shuttering, bed die and the support of vertical flitch are laid, there are safety hazards.
The content of the invention
For the above-mentioned deficiency of prior art, the technical problem to be solved in the present invention is to provide a kind of prefabricated girder and containing institute
The laminated floor slab construction technology of prefabricated girder is stated, to avoid floor integral construction from laying a large amount of support shutterings, complex process is real
Apply difficulty big, time-consuming for the small artificial colligation in beam steel scene, and uniformity is poor, and rigidity is poor, the problem of cast-in-place girder has space.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
A kind of prefabricated girder, the prefabricated girder is reinforced concrete structure, including the small beam body of concrete, small beam steel are described
Small beam steel part is embedded in the concrete girder body to form embedded bar, embedded bar and the small beam body of the concrete
It is combined into the overall structure of armored concrete；The small beam steel part is stretched out above the small beam body of the concrete on to be formed
Square reserved steel bar, reinforced mesh and connection cast-in-place concrete that top reserved steel bar is used to connect in floor；The small beam steel
Part is stretched out from the small beam body two ends of the concrete to form two ends reserved steel bar, and two ends reserved steel bar is used to overlap with crossbeam；
Two sides of the small beam body upper surface of concrete are described to floor brick faying surface is formed between the top reserved steel bar respectively
Contain the embedded bar in concrete girder body below floor brick faying surface.
Above-mentioned technical proposal is further improved, the small beam steel is triangular truss structure, including three are in isosceles triangle
The truss supervisor for be arrangeding in parallel and being arranged along concrete girder body length direction, some abdomens being connected to two-by-two between truss supervisor
Bar.
Further, the small beam body of the concrete is rectangular shape, and two truss supervisor of the small beam steel is pre-buried
In the concrete girder body, a truss supervisor is reserved in above the small beam body of the concrete, and the two of three truss supervisors
End exceeds the two ends of the small beam body of the concrete, reserves outside.
Further, some web members, which are welded and fixed, is connected between three truss supervisor.
The present invention also relates to a kind of laminated floor slab construction technology carried out based on above-mentioned prefabricated girder, Specific construction
Step is as follows：
1）, girder it is prefabricated：
1.1）, successively set up three truss supervisor of small beam steel, be welded and fixed some web members for connecting between truss supervisor, in advance
The small beam steel of triangular truss structure is made；
1.2）, look for Horizon, concrete girder build mould is fixed on Horizon；Small beam steel is placed into the concrete girder
In build mould, concrete slurry is poured, concrete slurry forms the small beam body of the concrete in the concrete girder build mould, treats that concrete is small
Beam body reaches after some strength that the demoulding is stacked stand-by to form prefabricated girder；
2）, complete to be built template and the erection of steel bar framework of the crossbeam of laminated floor slab layer；
3）, prefabricated girder is erected between crossbeam by being supported on some vertical support bars in lower first floor face；Prefabricated girder
Two ends reserved steel bar stretch into the steel bar framework of crossbeam and meet the requirement of the lap of splice；
4）, the parallel prefabricated girder for setting up corresponding with floor requirement, the spacing between contiguous prefabricated girder is with that will be placed on
Floor brick correspondence between it；
5）, floor brick is placed between adjacent prefabricated girder, the journal stirrup at floor brick two ends is overlapped on the small beam body upper table of concrete
On the floor brick faying surface in face；It should be close to place along the adjacent floor deck brick of prefabricated girder length direction；By floor brick in whole building
Laid between the prefabricated girder of plate complete；
6）, prefabricated girder floor brick of the top reserved steel bar higher than laying, corresponding with whole floor reinforced mesh is laid
Above floor brick, reinforced mesh is fixed with top reserved steel bar colligation；
7）, pour the concrete slurry of crossbeam and laminated floor slab, vibration concrete slurry, concrete slurry should be higher by reinforced mesh and meet thickness requirement, treat
Concrete slurry solidification, crossbeam, laminated floor slab form overall structure；
8）, after concrete slurry reach some strength after, the vertical support bar of dismountable support and the template of crossbeam.
Further, the concrete girder build mould includes bed die steel plate, if being arranged at intervals with the bed die steel plate
Dry side mould steel plate, the side form steel plate is oppositely arranged in parallel vertically.
Further, the lower section of the prefabricated girder sets some horizontal supports vertical with prefabricated girder length direction
Plate；The horizontal supporting plate at least supports two prefabricated girders；The vertical support bar upper end is supported under horizontal supporting plate
Surface.
Compared with prior art, the present invention has the advantages that：
1st, this prefabricated girder compares the girder of cast-in-place construction, bed die need not be set up during floor slab construction, prefabricated girder is in itself
With some strength and rigidity, can as floor brick support frame, reduce a large amount of support shutterings, the erection of vertical support bar,
Improve working security simultaneously；
2nd, the small beam body of precast concrete, it is to avoid the problem of space and voids and pits occurs in cast-in-place process, it is ensured that floor is held
Principal characteristic energy；
3rd, small beam steel uses prefabricated triangle steel truss structure, compared to the structure of the artificial colligation in former scene, has saved scene
Engineering time, the uniformity of manufacture is good, and quality is substantially improved, and whole structural stability is strong, and rigidity is good, is unlikely to deform；
4th, the laminated floor slab construction technology constructed using this prefabricated girder is simplified, and exploitativeness is strong, shortens the duration.
Brief description of the drawings
The schematic cross-section of prefabricated girder in Fig. 1-specific embodiment of the invention；
The structural representation of prefabricated girder in Fig. 2-specific embodiment of the invention；
The structural representation of laminated floor slab in Fig. 3-specific embodiment of the invention；
Wherein, the small beam body of 1- concrete, the small beam steels of 2-, 3- truss supervisor, 4- web members, 5- floor brick faying surfaces, 6- floor bricks,
7- reinforced mesh, 8- Cast-in-place concretes.
Embodiment
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
The prefabricated girder of the present invention is reinforced concrete structure, including the small beam body 1 of concrete, small beam steel 2.
Referring to Fig. 1, Fig. 2, the small beam steel 2 be triangular truss structure, including three be arranged in parallel in isosceles triangle and
Along the truss supervisor 3 of the small length direction of beam body 1 arrangement of concrete, some web members 4 being connected to two-by-two between truss supervisor；Lower end
Web member 4 between two truss supervisors 3 is set perpendicular to truss supervisor 3, and some rectangle frames are constituted with two truss supervisors 3；Under
Web member 4 between end two truss supervisor 3 and the truss supervisor 3 of top is angularly disposed, any truss supervisor 3 in lower end with it is upper
Side a truss supervisor 3 and between web member 4 constitute some triangle frames or ladder-shaped frame.Web member 4, which is welded and fixed, to be connected to
Between truss supervisor 3.The small prefabricated integral triangular truss structure of beam steel 2, resistance to overturning is good.
Referring to Fig. 2, the small beam body 1 of concrete be rectangular shape, the small lower end of beam steel 2 two truss supervisor 3 and
Between some web members 4 be embedded in the small beam body 1 of concrete to form embedded bar, embedded bar and the small beam body of the concrete
1 is combined into the overall structure of armored concrete；The truss supervisor 3 of the small top of beam steel 2 and a part for institute's connection web member 4
The small top of beam body 1 of concrete is reserved in form top reserved steel bar, top reserved steel bar is used to connect the bar-mat reinforcement in floor
Piece 7 and connection Cast-in-place concrete 8；Steel is reserved beyond the two ends of the small beam body 1 of concrete to form two ends in the two ends of three truss supervisors 3
Muscle, two ends reserved steel bar is used to overlap with crossbeam；Two sides of the small upper surface of beam body 1 of concrete are between the reserved steel bar of top points
Not Xing Cheng floor brick faying surface 5, small beam steel 2 is contained respectively in the small beam body 1 of concrete of the lower section of floor brick faying surface 5 of both sides
A truss supervisor 3.
The laminated floor slab construction technology carried out based on above-mentioned prefabricated girder is comprised the following steps that：
1）, girder it is prefabricated：
1.1）, two truss be responsible for 3 put on the ground, it is parallel it is relative put, some web members 4 between two truss supervisors 3
It is angularly disposed to be welded and fixed, two truss supervisor 3 and between web member 4 constitute some triangle frames or ladder-shaped frame；With three pieces of squares
Shape plank is built into the structure that section is triangle, and the triangle is corresponding with the required triangular truss shape of small beam steel 2；
Weld two truss are responsible for into 3 to be placed on the one side of triangle yoke, one is placed in triangle in two truss supervisors 3
The base of yoke, another be placed in triangle yoke top margin, the 3rd root truss is responsible for into 3, and to be placed on triangle yoke another
The base position of side, and top margin position truss supervisor 3 between some web members 4 it is angularly disposed be welded and fixed, two truss masters
Pipe 3 and between web member 4 constitute some triangle frames or ladder-shaped frame；Triangle yoke is removed, two truss of base position
Some web members 4 between supervisor 3 set and are welded and fixed perpendicular to truss supervisor 3, two truss of base position supervisor 3 and it
Between web member 4 constitute some rectangle frames, complete the prefabricated of the small beam steel 2 of triangular truss structure；
1.2）, look for Horizon, the small pattern of beam body 1 of concrete is fixed on Horizon；Small beam steel 2 is placed into the concrete small
In the pattern of beam body 1, concrete slurry is poured, concrete slurry forms the small beam body 1 of the concrete in the small pattern of beam body 1 of the concrete, waits to mix
Coagulate native small beam body 1 to reach after some strength, the demoulding is stacked stand-by to form prefabricated girder；
2）, complete to be built template and the erection of steel bar framework of the crossbeam of laminated floor slab layer；
3）, prefabricated girder is erected between crossbeam by being supported on some vertical support bars in lower first floor face；Prefabricated girder
Two ends reserved steel bar stretch into the steel bar framework of crossbeam and meet the requirement of the lap of splice；
4）, with above-mentioned 3）The parallel prefabricated girder for setting up corresponding with floor requirement of mode, between contiguous prefabricated girder
Spacing is corresponding with to place floor brick 6 in-between；
5）, because prefabricated girder self-strength, good rigidity, you can as support frame, building is placed between adjacent prefabricated girder
Plate brick 6, the journal stirrup at the two ends of floor brick 6 is overlapped on the reserved floor brick faying surface 5 in the small upper surface of beam body 1 of concrete；Along prefabricated
The adjacent floor deck brick 6 of girder length direction should be close to place；Floor brick 6 has been laid between the prefabricated girder of whole floor
It is whole；
6）, reserved floor bricks 6 of the truss supervisor 3 higher than laying in the top of the small beam body of concrete 1, will steel corresponding with whole floor
Muscle mesh sheet 7 is laid on the top of floor brick 6, the small beam steel 2 truss supervisor 3 reserved with the top of the small beam body of concrete 1 of reinforced mesh 7
Colligation is fixed；
7）, pour crossbeam and laminated floor slab concrete slurry, vibration concrete slurry, concrete slurry should be higher by reinforced mesh and meet thickness requirement, treat existing
Pour concrete 8 to solidify, crossbeam, laminated floor slab form overall structure；
8）, after Cast-in-place concrete 8 reaches some strength, the vertical support bar of dismountable support and the template of crossbeam.
The small pattern of beam body 1 of concrete includes being arranged at intervals with some side form steel plates, side form steel on bed die steel plate, bed die steel plate
Plate is oppositely arranged in parallel vertically, is welded and fixed with bed die steel plate.
To increase integrally-built stability, the lower section of prefabricated girder sets some vertical with prefabricated girder length direction
Horizontal supporting plate；Horizontal supporting plate supports multiple prefabricated girders；Vertical support bar upper end supports the lower surface of horizontal supporting plate.
It is last it should be noted that the above embodiment of the present invention is only example to illustrate the invention, still
The invention is not restricted to above-mentioned specific embodiment, above-mentioned specific embodiment is only illustrative, rather than restricted.Although
The present invention is described in detail with reference to preferred embodiment by applicant, for those of ordinary skill in the field,
Other various forms of changes and variation can also be made on the basis of described above, all embodiments can not be given here
With exhaustion, every guarantor for belonging to obvious changes or variations that technical scheme amplifies out still in the present invention
Protect the row of scope.
Claims (7)
1. a kind of prefabricated girder, the prefabricated girder is reinforced concrete structure, it is characterised in that：Including the small beam body of concrete,
Small beam steel, the small beam steel part is embedded in the concrete girder body to form embedded bar, embedded bar and institute
State the overall structure that the small beam body of concrete is combined into armored concrete；The small beam steel part is from the small beam body of the concrete
Side is stretched out to form top reserved steel bar, and top reserved steel bar is used to connect the reinforced mesh in floor and connects cast-in-place coagulation
Soil；The small beam steel part is stretched out to form two ends reserved steel bar, two ends reserved steel bar from the small beam body two ends of the concrete
For being overlapped with crossbeam；Two sides of the small beam body upper surface of concrete form building respectively between the top reserved steel bar
Contain the embedded bar in concrete girder body below plate brick faying surface, the floor brick faying surface.
2. a kind of prefabricated girder according to claim 1, it is characterised in that：The small beam steel is triangular truss knot
Structure, including three truss for be arrangeding in parallel and being arranged along concrete girder body length direction in isosceles triangle are responsible for, are connected to two-by-two
Some web members between truss supervisor.
3. a kind of prefabricated girder according to claim 2, it is characterised in that：The small beam body of concrete is cuboid
Shape, two truss supervisor of the small beam steel is embedded in the concrete girder body, and a truss supervisor is reserved in described
Above the small beam body of concrete, the two ends of three truss supervisors exceed the two ends of the small beam body of the concrete, reserve outside.
4. a kind of prefabricated girder according to claim 2, it is characterised in that：Some web members, which are welded and fixed, is connected to institute
State between three truss supervisor.
5. laminated floor slab construction technology, it is characterised in that：This construction technology is based on any described prefabricated girders of claim 2-4
And carry out, comprise the following steps that：
1）, girder it is prefabricated：
1.1）, successively set up three truss supervisor of small beam steel, be welded and fixed some web members for connecting between truss supervisor, in advance
The small beam steel of triangular truss structure is made；
1.2）, look for Horizon, concrete girder build mould is fixed on Horizon；Small beam steel is placed into the concrete girder
In build mould, concrete slurry is poured, concrete slurry forms the small beam body of the concrete in the concrete girder build mould, treats that concrete is small
Beam body reaches after some strength that the demoulding is stacked stand-by to form prefabricated girder；
2）, complete to be built template and the erection of steel bar framework of the crossbeam of laminated floor slab layer；
3）, prefabricated girder is erected between crossbeam by being supported on some vertical support bars in lower first floor face；Prefabricated girder
Two ends reserved steel bar stretch into the steel bar framework of crossbeam and meet the requirement of the lap of splice；
4）, the parallel prefabricated girder for setting up corresponding with floor requirement, the spacing between contiguous prefabricated girder is with that will be placed on
Floor brick correspondence between it；
5）, floor brick is placed between adjacent prefabricated girder, the journal stirrup at floor brick two ends is overlapped on the small beam body upper table of concrete
On the floor brick faying surface in face；It should be close to place along the adjacent floor deck brick of prefabricated girder length direction；By floor brick in whole building
Laid between the prefabricated girder of plate complete；
6）, prefabricated girder floor brick of the top reserved steel bar higher than laying, corresponding with whole floor reinforced mesh is laid
Above floor brick, reinforced mesh is fixed with top reserved steel bar colligation；
7）, pour the concrete slurry of crossbeam and laminated floor slab, vibration concrete slurry, concrete slurry should be higher by reinforced mesh and meet thickness requirement, treat
Concrete slurry solidification, crossbeam, laminated floor slab form overall structure；
8）, after concrete slurry reach some strength after, the vertical support bar of dismountable support and the template of crossbeam.
6. laminated floor slab construction technology according to claim 5, it is characterised in that：The concrete girder build mould includes
Some side form steel plates are arranged at intervals with bed die steel plate, the bed die steel plate, the side form steel plate is oppositely arranged in parallel vertically.
7. laminated floor slab construction technology according to claim 5, it is characterised in that：If the lower section of the prefabricated girder is set
The dry horizontal supporting plate vertical with prefabricated girder length direction；The horizontal supporting plate at least supports two prefabricated girders；It is described
Vertical support bar upper end supports the lower surface of horizontal supporting plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710374746.2A CN107012985A (en) | 2017-05-24 | 2017-05-24 | A kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710374746.2A CN107012985A (en) | 2017-05-24 | 2017-05-24 | A kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder |
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| Publication Number | Publication Date |
|---|---|
| CN107012985A true CN107012985A (en) | 2017-08-04 |
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ID=59450836
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710374746.2A Pending CN107012985A (en) | 2017-05-24 | 2017-05-24 | A kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder |
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| CN (1) | CN107012985A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447902A (en) * | 2017-09-21 | 2017-12-08 | 中标建设集团股份有限公司 | A kind of prefabricated arch hollow block and its joist cast-in-situ monoblock type floor construction |
| CN109235636A (en) * | 2018-10-18 | 2019-01-18 | 刘家宇 | A kind of high-strength anti-seismic wall, integral cast-in-situ formula building and its engineering method |
| CN110318489A (en) * | 2019-06-27 | 2019-10-11 | 罗志康 | A kind of hollow laminated floor slab |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06248757A (en) * | 1993-02-26 | 1994-09-06 | Central Glass Co Ltd | Truss assembled body and frame body using this truss assembled body and composite material |
| KR20100066805A (en) * | 2008-12-10 | 2010-06-18 | (주)엠씨에스공법 | Steel-concrete composite crossbeam having wire mesh and construction method using the same |
| CN202559569U (en) * | 2012-05-09 | 2012-11-28 | 宝钢建筑系统集成有限公司 | Assembled monolithic self-insulation hidden dense rib light superposed floor slab |
| CN103711255A (en) * | 2013-12-31 | 2014-04-09 | 宝钢建筑系统集成有限公司 | Truss concrete superposed beam |
| CN204212298U (en) * | 2014-11-18 | 2015-03-18 | 浙江省建设投资集团有限公司 | A kind of thermal insulation laminated floor slab |
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2017
- 2017-05-24 CN CN201710374746.2A patent/CN107012985A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06248757A (en) * | 1993-02-26 | 1994-09-06 | Central Glass Co Ltd | Truss assembled body and frame body using this truss assembled body and composite material |
| KR20100066805A (en) * | 2008-12-10 | 2010-06-18 | (주)엠씨에스공법 | Steel-concrete composite crossbeam having wire mesh and construction method using the same |
| CN202559569U (en) * | 2012-05-09 | 2012-11-28 | 宝钢建筑系统集成有限公司 | Assembled monolithic self-insulation hidden dense rib light superposed floor slab |
| CN103711255A (en) * | 2013-12-31 | 2014-04-09 | 宝钢建筑系统集成有限公司 | Truss concrete superposed beam |
| CN204212298U (en) * | 2014-11-18 | 2015-03-18 | 浙江省建设投资集团有限公司 | A kind of thermal insulation laminated floor slab |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447902A (en) * | 2017-09-21 | 2017-12-08 | 中标建设集团股份有限公司 | A kind of prefabricated arch hollow block and its joist cast-in-situ monoblock type floor construction |
| CN109235636A (en) * | 2018-10-18 | 2019-01-18 | 刘家宇 | A kind of high-strength anti-seismic wall, integral cast-in-situ formula building and its engineering method |
| CN110318489A (en) * | 2019-06-27 | 2019-10-11 | 罗志康 | A kind of hollow laminated floor slab |
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Application publication date: 20170804 |