CN109057116A - A kind of ultra-high performance concrete sandwich floor slab and its manufacturing method - Google Patents
A kind of ultra-high performance concrete sandwich floor slab and its manufacturing method Download PDFInfo
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- CN109057116A CN109057116A CN201810930595.9A CN201810930595A CN109057116A CN 109057116 A CN109057116 A CN 109057116A CN 201810930595 A CN201810930595 A CN 201810930595A CN 109057116 A CN109057116 A CN 109057116A
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- high performance
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- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
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Abstract
The present invention relates to assembled architecture fields, disclose a kind of ultra-high performance concrete sandwich floor slab and its manufacturing method, wherein ultra-high performance concrete sandwich floor slab, including UHPC bottom plate and UHPC top plate, multiple UHPC short columns are evenly equipped between the UHPC bottom plate and UHPC top plate, first longitudinal direction reinforcing bar is evenly equipped in the UHPC bottom plate, second longitudinal direction reinforcing bar is evenly equipped in the UHPC top plate, vertical reinforcement is equipped in each UHPC short column, the upper end of the vertical reinforcement is fixed on the second longitudinal direction reinforcing bar, the lower end of the vertical reinforcement is fixed on the first longitudinal direction reinforcing bar.Bottom plate, top plate and short column of the invention is all made of UHPC material and is made, the characteristics of making full use of UHPC high-intensitive, high tenacity and high-durability, a kind of ultra-high performance concrete sandwich floor slab structure is formed, which can give full play to the high-performance of UHPC material, mitigation dead load, reduce difficulty of construction, improve structure durability, mitigate the feeding difficulty of later period pipe.
Description
Technical field
The present invention relates to assembled architecture fields, more particularly to a kind of ultra-high performance concrete sandwich floor slab and its manufacture
Method.
Background technique
Assembled architecture refers to the building being assembled at the scene with the component of prefabrication.Relative to the cast-in-place coagulation of tradition
For civil engineering is built, the main members such as spandrel girder, structural column, floor, wallboard, stair, balcony of assembled architecture all use factory
Prefabricated, on-site consolidation mode carries out construction implementation, with architecture quality is high, construction speed is fast, environmental pollution is small, project cost
Low significant advantage is the important directions of future architecture development.
Prefabricated concrete floor is assembled architecture as one of prefabricated concrete structure primary structure primary structure member
Important component, be floor is good in precasting yard pre-production, then installed at the construction field (site).Assembled Building in recent years
Hardened structure has obtained tremendous development, answers by original cored slab, Prestressed T template, prefabricated bar planting plate, armored concrete and in advance
The tradition such as power concrete folding plate (Sandwich Laminated Slab, with anti-rib superimposed sheet, hollow core laminated slab and regular reinforcement truss superimposed sheet)
Structure is light-duty to sandwich compoboard, shape steel plate/steel truss concrete superimposed sheet etc., multifunction structure changes.Materials with High Strength and
The cooperation of new construction can usually show excellent performance, for example, using high strength fibre concrete as surface layer, with ripple shape steel plate
As the sandwich compoboard of sandwich layer, not only intensity is high, deformation performance is good, but also 1/ of its quality less than conventional concrete plate
4；For another example, fiber concrete slab and steel truss superimposed sheet not only good rigidity, light weight, while the ductility that both can be given full play to is special
Sign has good anti-seismic performance.
The light weight standardization for realizing prefabricated assembled floor is the future developing trend of assembled architecture.Realization means are main
It include: first is that, for the weight and size for reducing PC component, preferably selecting and researching and developing the knot of high-strength light depending on used material
Structure material, such as lightweight aggregate, high strength steel；It constructs second is that depending on structure, is designed by special structure type, realized
Material intensive utilization, comprehensive rigidity, intensity, the switching performance etc. for improving assembled floor.Currently, assembled floor is with common
Armored concrete is main construction material, and traditional ordinary reinforced concrete structure floor has from great, durability is general, seam
The disadvantages of easy to leak；Steel sandwich floor slab in light structure, can freely cut using upper with the obvious advantage, but not fire resisting is special having
In the building of fire prevention demand, steel construction must use refractory material to be protected to improve fire resistance rating, in moist and corrosivity
In the environment of medium, steel construction is easy to happen corrosion, generally to take the modes such as derusting, zinc-plated, coating to carry out periodic maintenance, adopt
It is higher with stainless steel sandwich floor slab price.And with the rapid development of assembled architecture, proposed to traditional material light, high-strength
Requirement.Materials with High Strength can effectively reduce sectional dimension of members, lower self weight, save material utilization amount and transportation cost.
Ultra-high performance concrete, abbreviation UHPC (Ultra-High Performance Concrete), is over the past thirty years
In most innovative cement base engineering material, realize the Great span of engineering material performance, its representative is that reactive powder is mixed
Solidifying soil.Reactive Powder Concrete (Reactive Powder Concrete, be abbreviated as RPC) is by multicomponent reactive powder blend
The composite fibre such as material, inorganic coagulation material, continuous grading fine aggregate, steel fibre composition makes material by optimizing gradation design
Internal defect (gap and microcrack) is reduced at least, has superhigh intensity, high tenacity, high-durability, high crack-resistant and body
The novel concrete based composites that product has good stability.Since the presence of steel fibre in Reactive Powder Concrete strengthens Behavior of Hardened Cement Paste
Interlocking, so that the tensile strength of material is greatly improved, up to 4~6 times of high-strength concrete, limit tensile strain is more
It is 70~80 times up to high-strength concrete, fracture toughness is more than 250 times of normal concrete, mechanical property and deformation performance
It is substantially better than normal concrete and high-strength concrete.Therefore the material is suitable for having high-strength, lightweight, resistance to split structure, durability
It is required that structural engineering field.
UHPC material is mainly used for plug-in decorative wall panels, prefabricated U HPC stair, balcony etc. in assembled architecture field at present
Aspect strengthens node, the wet seam power of UHPC to the integral prefabricated connector of UHPC slab column, UHPC in terms of structure
Learning performance etc. also needs expansion correlative study.
Summary of the invention
The purpose of the invention is to overcome the deficiencies in the prior art, is split using UHPC material in high-strength, lightweight, resistance, is resistance to
Long, impervious etc. very-high performance, provide a kind of superelevation bending resistance draw performance, from heavy and light, durability is good, builds suitable for modularization
The ultra-high performance concrete sandwich floor slab and its manufacturing method built.
To achieve the goals above, one aspect of the present invention provides a kind of ultra-high performance concrete sandwich floor slab, including UHPC
Bottom plate and UHPC top plate, are evenly equipped with multiple UHPC short columns between the UHPC bottom plate and UHPC top plate, in the UHPC bottom plate
It is furnished with first longitudinal direction reinforcing bar, second longitudinal direction reinforcing bar is evenly equipped in the UHPC top plate, is equipped in each UHPC short column vertical
Reinforcing bar, the upper end of the vertical reinforcement are fixed on the second longitudinal direction reinforcing bar, and the lower end of the vertical reinforcement is fixed on described
On first longitudinal direction reinforcing bar.
Preferably, the height of the ultra-high performance concrete sandwich floor slab is the 1/40 of its across footpath, and is not less than 13cm.
Preferably, the height of the UHPC bottom plate is 2cm~4cm, and the height of the UHPC top plate is 2cm~3cm.
Preferably, the diameter of each UHPC short column is 4cm~5cm, the center spacing of each adjacent UHPC short column
For 15cm~30cm.
Preferably, it is arranged with pvc pipe outside each UHPC short column, the UHPC bottom plate, the UHPC top plate and each
Thermal insulation material is filled in the gap constituted between the UHPC short column.
It preferably, further include UHPC coxostermum, the UHPC coxostermum is disposed longitudinally on the very-high performance coagulation respectively
The two sides of native sandwich floor slab, the upper end of the UHPC coxostermum are fixedly connected with the UHPC top plate, and with the UHPC top plate
Top flush, the lower end of the UHPC coxostermum is fixedly connected with the UHPC bottom plate, and the bottom with the UHPC bottom plate
It flushes.
Preferably, the UHPC coxostermum is equipped with multiple for interting the apertures of pipeline, the UHPC coxostermum it is outer
Side is equipped with indent seam.
Second aspect of the present invention provides a kind of manufacturing method of ultra-high performance concrete sandwich floor slab, comprising the following steps:
S1, Integral horizontal type prefabricated U HPC bottom plate, and the first longitudinal direction reinforcing bar bound in the good UHPC bottom plate is laid in advance
And the vertical reinforcement in UHPC short column；
S2, after the UHPC bottom plate reaches final set, in the vertical reinforcement housing pvc pipe, and between adjacent pvc pipe
Thermal insulation material is filled, and lays the second longitudinal direction reinforcing bar in binding UHPC top plate in the vertical reinforcement upper end, then described
The cast-in-place UHPC in pvc pipe and thermal insulation material top forms UHPC short column and UHPC top plate；
S3, in the cast-in-place formation UHPC coxostermum in the same side of the UHPC bottom plate and UHPC top plate, then at the bottom UHPC
The cast-in-place formation UHPC coxostermum in the other side of plate and UHPC top plate, last natural curing carry out steam curing after 24 hours, complete
The prefabricated construction of ultra-high performance concrete sandwich floor slab.
Preferably, in the step S3, the steam curing be conserved 24 hours under 80 DEG C~100 DEG C of steam, or
It is conserved 48 hours under 70 DEG C~80 DEG C of steam.
Compared with prior art, the invention has the following advantages that
(1) bottom plate of the invention, top plate and short column are all made of UHPC material and are made, and make full use of UHPC high intensity, high-ductility
The characteristics of property and high-durability, a kind of ultra-high performance concrete sandwich floor slab structure is formed, which can give full play to UHPC
The high-performance of material, reduces difficulty of construction, improves structure durability, mitigates the feeding difficulty of later period pipe mitigation dead load；
(2) present invention no setting is required deformed bar only need to configure a small amount of distributing bar, and avoiding pre-stress construction etc. is
Column complicated technology problem；
(3) sandwich floor slab structure of the present invention using approximate full impregnated sky, the sandwich between UHPC bottom plate and UHPC top plate
Layer is equipped with multiple UHPC short columns, so that sandwich floor slab light structure, can freely preset in intermediate laminboard layer or the later period installs respectively
Class pipeline facilitates finishing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram (broken section) of the embodiment of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the B-B cross-sectional view of Fig. 2；
Fig. 5 is the adjacent two pieces of ultra-high performance concretes sandwich floor slab seam connection schematic diagram of the present invention.
Description of symbols
1UHPC bottom plate 2UHPC short column
4 first longitudinal direction reinforcing bar of 3UHPC top plate
5 thermal insulation material 6UHPC coxostermums
7 vertical reinforcement, 8 second longitudinal direction reinforcing bar
9 aperture, 10 indent seam
Specific embodiment
In the present invention, in the absence of explanation to the contrary, the noun of locality " longitudinal direction " used refers to the very-high performance
The length direction of concrete sandwich floor, " vertical " refer to the short transverse of the ultra-high performance concrete sandwich floor slab, " horizontal
To " refer to the width direction of the ultra-high performance concrete sandwich floor slab.
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of ultra-high performance concrete sandwich floor slab, as shown in Figures 1 to 4, including 1 He of UHPC bottom plate
UHPC top plate 3 is evenly equipped with multiple UHPC short columns 2, is evenly distributed in the UHPC bottom plate 1 between the UHPC bottom plate 1 and UHPC top plate 3
There is first longitudinal direction reinforcing bar 4, second longitudinal direction reinforcing bar 8 is evenly equipped in the UHPC top plate 3, is equipped in each UHPC short column 2 perpendicular
To reinforcing bar 7, the upper end of the vertical reinforcement 7 is fixed on the second longitudinal direction reinforcing bar 8, and the lower end of the vertical reinforcement 7 is fixed
On the first longitudinal direction reinforcing bar 4.
The present invention makes sandwich floor slab using ultra-high performance concrete, that is, UHPC material, makes full use of UHPC high-intensitive, high
The characteristics of toughness and high-durability, a kind of ultra-high performance concrete sandwich floor slab structure is formed, which can give full play to
The high-performance of UHPC material, reduces difficulty of construction, improves structure durability, mitigates the feeding difficulty of later period pipe mitigation dead load.Its
In, the ultra-high performance concrete material that the ultra-high performance concrete sandwich floor slab uses be bending and tensile strength 20MPa with
Upper, compression strength 120MPa or more ultra-high performance concrete.
The height of ultra-high performance concrete sandwich floor slab of the present invention is the 1/40 of its across footpath, and is not less than 13cm.It is preferred that
Ground, the height of the UHPC bottom plate 1 are 2cm~4cm, and the height of the UHPC top plate 3 is 2cm~3cm；Each UHPC is short
The diameter of column 2 is 4cm~5cm, and the center spacing of each adjacent UHPC short column 2 is 15cm~30cm.The UHPC bottom plate
1, UHPC top plate 3, UHPC short column 2 structure size can be designed according to floor across footpath, above-mentioned preferred size design can be with
Ultra-high performance concrete intensity height, non-coarse aggregate, easily closely knit technical advantage are given full play to, ultra-high performance concrete floor is mitigated
Self weight.
According to above-mentioned preferred size design, ultra-high performance concrete sandwich floor slab using ultra-high performance concrete due to being made
For structural material, and devise reasonable connecting structure, UHPC top plate 3, UHPC bottom plate 1 thickness (UHPC can be greatly reduced
Top plate 3, UHPC bottom plate 1 thickness be much smaller than the thickness of traditional prefabricated concrete floor), while ultra-high performance concrete sandwich building
Plate no setting is required deformed bar only need to configure a small amount of distributing bar, avoid the serial complicated technology problem such as pre-stress construction,
It is greatly lowered so that ultra-high performance concrete sandwich floor slab of the invention is self-possessed, facilitates lifting, and be able to satisfy superelevation
The force request of energy concrete floor strength and stiffness.
The present invention is evenly equipped with first longitudinal direction reinforcing bar 4 in the UHPC bottom plate 1, is evenly equipped with second in the UHPC top plate 3
Longitudinal reinforcement 8, on the one hand uniformly distributed reinforcing bar can effectively improve bottom plate and ability is drawn in the bending resistance of top plate, while reduce structure crack wind
Danger when connecting with load-bearing pillar, operates without any welding, need to only show on the other hand for overlapping load-bearing pillar and other floors
Pour UHPC material.Transverse direction can be respectively set in UHPC bottom plate 1 and UHPC top plate 3 for have a special lateral stressed requirement
Stretch out reinforcing bar.
The present invention uses the sandwich floor slab structure of approximate full impregnated sky, between the UHPC bottom plate 1 and UHPC top plate 3
Laminboard layer is equipped with multiple UHPC short columns 2, the vertical reinforcement 7 for shearing resistance is equipped in each UHPC short column 2, so that sandwich building
Plate light structure can freely be preset in intermediate laminboard layer or the later period installs all kinds of pipelines, facilitate finishing.
Wherein, pvc pipe is arranged with outside each UHPC short column 2, it is short that the pvc pipe can serve as the manufacture UHPC
The template of column 2 not only can effectively enhance the globality of the structure using the UHPC short column 2 that pvc pipe wraps up, but also can be abundant
The axis for playing arrangement of reinforcement UHPC short column 2 draws performance；Between the UHPC bottom plate 1, the UHPC top plate 3 and each UHPC short column 2
It is filled with thermal insulation material 5, such as light foam core model in the gap of composition, self weight can not only be mitigated, and makes the present invention super
The heat insulation and preservation effect of high performance concrete sandwich floor slab is good, meanwhile, the installation for all kinds of pipelines can be in filling thermal insulating material
Expect to carry out together when 5, or after the thermal insulation material 5 of later period removal filling, then carries out the interspersed of various pipelines.
The invention also includes UHPC coxostermum 6, the UHPC coxostermum 6 is disposed longitudinally on the very-high performance coagulation respectively
The two sides of native sandwich floor slab, the upper end of the UHPC coxostermum 6 are fixedly connected with the UHPC top plate 3, and are pushed up with the UHPC
The top of plate 3 flushes, and the lower end of the UHPC coxostermum 6 is fixedly connected with the UHPC bottom plate 1, and with the UHPC bottom plate 1
Bottom flush.
Wherein, the UHPC coxostermum 6 is equipped with multiple for interting the aperture 9 of pipeline, is facilitated and is carried out various pipelines
It is interspersed；For the UHPC coxostermum 6 for connecting between adjacent two sandwich floor slab, the outside of the UHPC coxostermum 6 is equipped with indent
Seam 10, cast-in-place UHPC carries out lateral connection after facilitating more plate liftings in place, as shown in figure 5, connecting between adjacent two sandwich floor slab
The method of connecing is on-site hoisting to be carried out to ultra-high performance concrete sandwich floor slab, so that the UHPC coxostermum 6 of adjacent two sandwich floor slab
It is in contact, after lifting is in place, cast-in-place construction is carried out between the indent seam 10 of two adjacent sandwich floor slabs using UHPC material, from
And by the ultra-high performance concrete sandwich floor slab along longitudinal direction, be vertically successively spliced to form whole floor layer.
The present invention also provides a kind of manufacturing methods of ultra-high performance concrete sandwich floor slab, comprising the following steps:
S1, Integral horizontal type prefabricated U HPC bottom plate 1, and the first longitudinal direction steel bound in the good UHPC bottom plate 1 is laid in advance
Vertical reinforcement 7 in muscle 4 and UHPC short column 2；
S2, after the UHPC bottom plate 1 reaches final set, in the 7 housing pvc pipe of vertical reinforcement, and adjacent pvc pipe it
Between fill thermal insulation material 5, and 7 upper end of vertical reinforcement lay binding UHPC top plate 3 in second longitudinal direction reinforcing bar 8, then
In the pvc pipe and the cast-in-place UHPC in 5 top of thermal insulation material forms UHPC short column 2 and UHPC top plate 3；
S3, in the cast-in-place formation UHPC coxostermum 6 in the same side of the UHPC bottom plate 1 and UHPC top plate 3, then in the UHPC
The cast-in-place formation UHPC coxostermum 6 in the other side of bottom plate 1 and UHPC top plate 3, last natural curing carried out steam curing after 24 hours,
Complete the prefabricated construction of ultra-high performance concrete sandwich floor slab.
UHPC bottom plate 1 of the invention, UHPC short column 2, UHPC top plate 3 pour in two times, and UHPC bottom plate 1 is first horizontal
Prefabricated, horizontal prefab-form is simple, expense is low, and no setting is required on the UHPC bottom plate 1 and UHPC top plate 3 for adapting to coagulation
The preset slot that Tulou plate expands with heat and contract with cold.Applying for existing precast concrete beam can be used in ultra-high performance concrete sandwich floor slab of the present invention
Construction equipment and construction technology are not necessarily to increase new equipment investment in addition to steam curing, carry out completely newly without to construction personnel
Skills training, construction organization relative ease is quick, and the manufacturing cycle is short.
Preferably, in the step S3, the steam curing be conserved 24 hours under 80 DEG C~100 DEG C of steam, or
It is conserved 48 hours under 70 DEG C~80 DEG C of steam.For ultra-high performance concrete under conditions of steam curing, effect of contraction is several
It can ignore.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (9)
1. a kind of ultra-high performance concrete sandwich floor slab, which is characterized in that described including UHPC bottom plate (1) and UHPC top plate (3)
It is evenly equipped with multiple UHPC short columns (2) between UHPC bottom plate (1) and UHPC top plate (3), is evenly equipped with first in the UHPC bottom plate (1)
Longitudinal reinforcement (4), the UHPC top plate (3) is interior to be evenly equipped with second longitudinal direction reinforcing bar (8), is equipped in each UHPC short column (2)
Vertical reinforcement (7), the upper end of the vertical reinforcement (7) are fixed on the second longitudinal direction reinforcing bar (8), the vertical reinforcement (7)
Lower end be fixed on the first longitudinal direction reinforcing bar (4).
2. ultra-high performance concrete sandwich floor slab according to claim 1, which is characterized in that the ultra-high performance concrete
The height of sandwich floor slab is the 1/40 of its across footpath, and is not less than 13cm.
3. ultra-high performance concrete sandwich floor slab according to claim 1, which is characterized in that the UHPC bottom plate (1)
Height is 2cm~4cm, and the height of the UHPC top plate (3) is 2cm~3cm.
4. ultra-high performance concrete sandwich floor slab according to claim 1, which is characterized in that each UHPC short column (2)
Diameter be 4cm~5cm, the center spacing of each adjacent UHPC short column (2) is 15cm~30cm.
5. ultra-high performance concrete sandwich floor slab according to claim 1, which is characterized in that each UHPC short column (2)
Outside is arranged with pvc pipe, constitutes between the UHPC bottom plate (1), the UHPC top plate (3) and each UHPC short column (2)
Gap in be filled with thermal insulation material (5).
6. ultra-high performance concrete sandwich floor slab according to claim 1, which is characterized in that further include UHPC coxostermum
(6), the UHPC coxostermum (6) is disposed longitudinally on the two sides of the ultra-high performance concrete sandwich floor slab, the UHPC respectively
The upper end of coxostermum (6) is fixedly connected with the UHPC top plate (3), and with flushed at the top of the UHPC top plate (3), it is described
The lower end of UHPC coxostermum (6) is fixedly connected with the UHPC bottom plate (1), and is flushed with the bottom of the UHPC bottom plate (1).
7. ultra-high performance concrete sandwich floor slab according to claim 6, which is characterized in that the UHPC coxostermum (6)
Multiple apertures (9) for being used to intert pipeline are equipped with, the outside of the UHPC coxostermum (6) is equipped with indent seam (10).
8. a kind of manufacturing method of ultra-high performance concrete sandwich floor slab, which comprises the following steps:
S1, Integral horizontal type prefabricated U HPC bottom plate (1), and the first longitudinal direction steel bound in the good UHPC bottom plate (1) is laid in advance
Vertical reinforcement (7) in muscle (4) and UHPC short column (2)；
S2, after the UHPC bottom plate (1) reaches final set, in the vertical reinforcement (7) housing pvc pipe, and adjacent pvc pipe it
Between fill thermal insulation material (5), and the vertical reinforcement (7) upper end lay binding UHPC top plate (3) in second longitudinal direction reinforcing bar
(8), UHPC short column (2) and UHPC top plate (3) then are formed with the cast-in-place UHPC in thermal insulation material (5) top in the pvc pipe；
S3, in the cast-in-place formation UHPC coxostermum (6) in the same side of the UHPC bottom plate (1) and UHPC top plate (3), then described
The cast-in-place formation UHPC coxostermum (6) in the other side of UHPC bottom plate (1) and UHPC top plate (3), last natural curing 24 hours laggard
The prefabricated construction of ultra-high performance concrete sandwich floor slab is completed in row steam curing.
9. the manufacturing method of ultra-high performance concrete sandwich floor slab according to claim 8, which is characterized in that the step
In S3, the steam curing is to conserve 24 hours under 80 DEG C~100 DEG C of steam, or conserve under 70 DEG C~80 DEG C of steam
48 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374014A (en) * | 2019-08-09 | 2019-10-25 | 黄河勘测规划设计研究院有限公司 | Big span continuous beam UHPC column construction method |
| CN112343232A (en) * | 2020-10-30 | 2021-02-09 | 山东建筑大学 | Combined floor slab, building and construction method |
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| CN1693617A (en) * | 2002-04-30 | 2005-11-09 | 邱则有 | Reinforced concrete stereo load-carrying structure floor |
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| CN203654563U (en) * | 2013-11-25 | 2014-06-18 | 辽宁工业大学 | Bidirectional composite floor slab with cross-shaped ribs |
| CN104532997A (en) * | 2014-12-26 | 2015-04-22 | 宝钢建筑系统集成有限公司 | Assembly type floor system and construction method thereof |
| CN204386002U (en) * | 2014-12-26 | 2015-06-10 | 宝钢建筑系统集成有限公司 | A kind of precast assemble floor system |
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| CN112343232A (en) * | 2020-10-30 | 2021-02-09 | 山东建筑大学 | Combined floor slab, building and construction method |
| CN112343232B (en) * | 2020-10-30 | 2022-06-03 | 山东建筑大学 | Combined floor slab, building and construction method |
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Application publication date: 20181221 |