CN109440991A - A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section - Google Patents
A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section Download PDFInfo
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- CN109440991A CN109440991A CN201811558706.4A CN201811558706A CN109440991A CN 109440991 A CN109440991 A CN 109440991A CN 201811558706 A CN201811558706 A CN 201811558706A CN 109440991 A CN109440991 A CN 109440991A
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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
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section, belongs to assembled architecture technical field.The present invention solves the problems, such as that the dosage of cast-in-place concrete overlapping layers required for existing precast slab for superimposed sheet is big, construction period needs setting to support, stress is not reasonable.It includes span centre region and the standoff region positioned at span centre region both ends, the bottom surface in span centre region and the bottom surface of standoff region are located at same level, and the thickness of standoff region is less than the thickness in span centre region, the span centre region of cored slab is machined with several through-holes along its span direction, the top surface of each standoff region offers several first through slots along the span direction in span centre region, the both upper ends thereof in span centre region is machined with several U-lags respectively, the open end of U-lag is located at the both ends in span centre region span direction, several U-lags are uniformly arranged, and the lower part of U-lag and through-hole perforation are arranged.
Description
Technical field
The present invention relates to a kind of glomerations to build the unidirectional prefabricated board of superimposed sheet, and in particular to a kind of glomeration building superimposed sheet use
The unidirectional precast hollow slab in gradual change section, belongs to assembled architecture technical field.
Background technique
Superstructure can be divided into monoblock type, assembled and three kinds of assembled integral according to form of construction work.Assembled integral superstructure
The length of both monoblock type superstructure and precast assemble floor is taken, with overall stiffness is big, anti-seismic performance is good, easy construction, shortens the construction period
The advantages that.Concrete folding plate is on prefabricated board plus to pour one layer of cast-in-place concrete and the assembled integral superstructure that is formed, by by
Power situation can be divided into once force-bearing superimposed sheet and secondary loading superimposed sheet.In the construction stage, using prefabricated board as in-situ layer coagulation
The template of soil, prefabricated board lower section exempt to set support, and prefabricated board bears its self weight, last layer weight concrete and construction period lotus at this time
It carries, after after upper layer, cast-in-place concrete reaches design strength, then the overlapping section formed by pre-erection and cast-in-place part bears to make
With load, secondary loading superimposed sheet is constituted, this superimposed sheet, which is more advantageous to, to be improved construction efficiency, economizes on resources.
Although the superimposed sheet prefabricated panel for occurring various technology maturations in architectural engineering and widely applying, exist existing
The problems such as pouring concrete overlapping layers dosage is big, construction period needs to be arranged bearing, stress is not reasonable, for this reason, it is necessary to invent
Superimposed sheet prefabricated panel being adapted to assembled built with ribbed bricks building, haveing excellent performance.Secondary loading superimposed sheet it is pre-
Bottom plate processed, on the one hand the template as rear pouring concrete layer, on the other hand has the bearing function for exempting from bearing, therefore to superimposed sheet
The overall process used of constructing plays an important role.
Summary of the invention
The present invention is that the dosage of cast-in-place concrete overlapping layers required in order to solve existing precast slab for superimposed sheet is big, applies
It needs to be arranged the not reasonable problem of bearing, stress between duration, and then provides a kind of glomeration building superimposed sheet gradual change section
Unidirectional precast hollow slab.
Used technical solution is the present invention to solve above-mentioned technical problem:
A kind of glomeration builds the superimposed sheet unidirectional precast hollow slab in gradual change section, it includes span centre region and is located at span centre
The standoff region at region both ends, the bottom surface in span centre region and the bottom surface of standoff region are located at same level, and standoff region
Thickness is less than the thickness in span centre region, and the span centre region of cored slab is machined with several through-holes along its span direction, several described logical
Hole is arranged in parallel in the horizontal direction, and the top surface of each standoff region offers several along the span direction in span centre region
One through slot, several first through slots are identical as the quantity of several through-holes and correspond connection setting, span centre region
Both upper ends thereof is machined with several U-lags respectively, and the open end of U-lag is located at the both ends in span centre region span direction, if
It does the U-lag to be uniformly arranged, and the lower part of U-lag and through-hole perforation are arranged.
Further, the first through slot in standoff region is arc-shaped slot, what the center line of the arc-shaped slot communicated therewith
The center line of through-hole is located along the same line.
Further, be respectively spaced a through-hole between each adjacent two U-lag, each U-lag with through-hole below
Face setting.
Further, the width of cored slab is the multiple of 200mm.
Further, the plate thickness of standoff region is not less than 50mm, and the plate thickness in span centre region and the thickness of superposed floor are identical.
Further, the length range of each standoff region is 300mm~500mm.
Further, the lower part of cored slab is embedded with several sagging moment muscle, and several sagging moments along its span direction
Muscle is arranged in parallel in the horizontal direction.
Further, the two sides wall construction on cored slab on its span direction is identical and arranged symmetrically, wherein span centre area
Equal level is machined with the first fin and the second fin disposed in parallel up and down on each side wall in domain, wherein the first fin and second
The second through slot is formed between fin, and the thickness of the first fin is less than the thickness of the second fin.
The present invention has the effect that compared with prior art
One, compared with the thicker prefabricated board for exempting from bearing with the construction stage in the prior art, the gradual change section of the application is pre-
The self weight of cored slab processed reduces；It is set compared with the relatively thin prefabricated board of bearing with the construction stage in the prior art, has reached and applied
Work exempts from the purpose of bearing.Therefore, the gradual change section form of prefabricated board has taken into account two that construction exempts to support and mitigate member dead weight
Target, while also ensuring the smooth control precision of flooring.
Two, cored slab does not set bearing, self weight, overlapping layers load and construction live load is undertaken by it, to improve construction effect
Rate reduces engineering cost.
Three, overlapping layers is only present in standoff region in the application, can reinforce the company between prefabricated board and wall or backbar
It connects, realizes connection of the vertical member at floor.
Four, span centre region does not need to overlap, and the flatness of superimposed sheet can be made to control more accurate.
Five, the section of cored slab is variation in the application, and the plate thickness in span centre region is greater than the plate thickness of standoff region, this
The plate thickness of variation is consistent with the force-bearing situation of construction period plate.
Six, several through-holes can be used for arranging reserved spool, there is saving concrete amount, mitigation precast hollow slab to be self-possessed,
The sagging moment for reducing construction period, the deformability for improving cored slab, the application advantage for increasing cored slab sound insulation function.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is schematic top plan view of the invention；
Fig. 3 is schematic front view of the invention；
Fig. 4 is enlarged diagram at the P of Fig. 3.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, a kind of glomeration building superimposed sheet gradual change section in conjunction with Fig. 1~4
Unidirectional precast hollow slab, it includes span centre region 1 and the standoff region 2 positioned at 1 both ends of span centre region, the bottom in span centre region 1
Face and the bottom surface of standoff region 2 are located at same level, and the thickness of standoff region 2 is less than the thickness in span centre region 1, cored slab
Span centre region 1 be machined with several through-holes 11 along its span direction, several through-holes 11 are arranged in parallel in the horizontal direction,
The top surface of each standoff region 2 offers several first through slots 21 along the span direction in span centre region 1, and several described first is logical
Slot 21 is identical as the quantity of several through-holes 11 and corresponds connection setting, and the both upper ends thereof in span centre region 1 is processed respectively
There are several U-lags 12, the open end of U-lag 12 is located at the both ends in 1 span direction of span centre region, several U-lags
12 are uniformly arranged, and the lower part of U-lag 12 and the perforation of through-hole 11 are arranged.
Cored slab is in the shape of a " convex " along the longitudinal section in its span direction, i.e., along its span direction, the depth of section of cored slab
It is variation.Convex portion is span centre region 1, and raised both ends are standoff region 2.It is used in U-lag 12 on span centre region 1
In arrangement negative bending moment rib, to realize that superimposed sheet undertakes hogging moment in the continuous stress of middle support position, and in side support position.
The length of U-lag 12 should meet the force request of negative bending moment rib.Pouring concrete overlapping layers is only placed at the branch of precast hollow slab afterwards
Seat region 2, only forms in standoff region 2 and overlaps, and span centre region 1 does not need to overlap, and ultimately forms the overlapping locally overlapped
Superstructure.
Concrete and overlapping layer concrete (concrete i.e. in standoff region 2) in U-lag 12 and below through-hole 11
It pours jointly, remaining through-hole 11 should keep hollow state.
The unidirectional precast hollow slab in gradual change section produces completely in Prefabrication with the unidirectional pre- of several through-holes 11 first
Cored slab processed, then be cut into the variable cross-section form and U-lag 12 of both ends standoff region 2, the cross sectional shape of through-hole 11 and
Spacing between adjacent two through hole 11 depends primarily on the depth of section and Reinforcement (including sagging moment muscle 3 of cored slab
And negative bending moment rib) arrangement, it is ensured that rib width meets force request between thickness of protection tier and two through hole 11.The section of through-hole
Shape can be round or oblong or be made of multi-section circular arc.
Not preferably less than HRB400 grades or HRBF400 grades of the Reinforcement that precast hollow slab is configured, carrying should be met
Power calculates, the requirement of crack-control check calculation and deflection design, can longitudinal stress steel to precast hollow slab when being unsatisfactory for requiring
The prestressing force of muscle application certain level.When the longitudinal tensile reinforcing bar of the unidirectional precast hollow slab in gradual change section is regular reinforcement, coagulation
Native strength grade not preferably less than C30, when applying prestressing force to longitudinal tensile reinforcing bar, strength grade of concrete not preferably less than C40,
And not lower than C30.
The general plate class flexural member of stirrup and bent-up bar, Shear bearing capacity are not configured for single thickness
Safety stock (i.e. the conservative coefficient of shear resistance capacity) be significantly greater than the safety stock of flexure bearing capacity.Superimposed sheet is used
Prefabricated board is in the stress of both ends freely-supported when the construction stage exempting to set bearing, and maximum shear appears in standoff region 2,
Maximal bending moment appears in span centre region 1, if the plate thickness of standoff region 2 is thinned and forms board of variable section, Shear
The safety stock of bearing capacity will reduce, but its safety stock is still not less than the safety stock of flexure bearing capacity.Due to only
It is in standoff region 2 that plate thickness is thinning, so crack-control check calculation and deflection design of such way to serviceability limit state
Influence it is smaller.The plate thickness in span centre region 1 is greater than the plate thickness of standoff region 2, the plate thickness of this variation and construction period plate by
Power situation is consistent.
Compared with the thicker prefabricated board that the construction stage in the prior art exempts from bearing, the prefabricated sky in gradual change section of the application
The self weight of core reduces；It is set compared with the relatively thin prefabricated board of bearing with the construction stage in the prior art, has reached construction and exempted from
The purpose of bearing.Therefore, the gradual change section form of prefabricated board has taken into account construction and has exempted to support and mitigate two targets of member dead weight,
The smooth control precision of flooring is also ensured simultaneously.
Cored slab does not set bearing, undertakes self weight, overlapping layers load and construction live load by it, to improve construction efficiency,
Reduce engineering cost.
Overlapping layers is only present in standoff region 2 in the application, can reinforce the connection between prefabricated board and wall or backbar,
Realize connection of the vertical member at floor.
Several through-holes 11 can be used for arranging reserved spool, has and saves concrete amount, mitigate precast hollow slab self weight, subtract
The sagging moment of small construction period, the deformability for improving cored slab, the application advantage for increasing cored slab sound insulation function.Meet green
Color, energy-saving and environmental protection theory.
The variable cross-section form and U-lag 12 of standoff region 2 can cut on the basis of complete cored slab and obtain, greatly
Prefabrication difficulty is reduced greatly.
Span centre region 1 does not need to overlap, and the flatness of superimposed sheet can be made to control more accurate.
The first through slot 21 in standoff region 2 is arc-shaped slot, the through-hole 11 that the center line of the arc-shaped slot communicates therewith
Center line be located along the same line.In cored slab process, plate directly can be processed into several edges along its span direction
Horizontal plane through-hole 11 arranged in parallel, then goes out two standoff regions 2, standoff region for the both upper ends thereof horizontal resection of plate
The first through slot 21 on 2 is the lower part of the through-hole 11 processed in original plate, no longer needs to individually process the first through slot 21,
Prefabrication difficulty is reduced greatly, effectively improves processing efficiency.
Respectively be spaced a through-hole 11 between each adjacent two U-lag 12, each U-lag 12 with through-hole 11 below
Face setting.For arranging negative bending moment rib in U-lag 12, length should meet the force request of negative bending moment rib.U-lag 12 and
The concrete in through-hole 11 below pours jointly with overlapping layer concrete, remaining through-hole 11 keeps hollow state.
The width L of cored slab is the multiple of 200mm.The wide carry out Prefabrication of series of plates can be selected according to requirement of engineering.Root
The unidirectional precast hollow slab in gradual change section is formed according to the span and template that need to be cut into needs, changes in the prior art " one
The inefficient production method of one plate of mould ".
The plate thickness of standoff region 2 is not less than 50mm, and the plate thickness in span centre region 1 and the thickness of superposed floor are identical.Span centre area
The top surface in domain 1 is the top surface of cored slab itself, so that the flatness control of superimposed sheet is more accurate.The thickness size of superposed floor
It is determined by calculation.
The length range of each standoff region 2 is 300mm~500mm.The length of both ends standoff region 2 is identical, main to use
Connection between reinforcement floor and wall or backbar, and realize concrete folding layer to the bonding and anchor of negative bending moment rib
Gu.
The lower part of cored slab is embedded with several sagging moment muscle 3 along its span direction, and several sagging moment muscle 3 are in level
It is arranged in parallel on direction.Sagging moment muscle 3 is directly arranged when hollow board prefabrication produces, it is unidirectionally pre- that gradual change section can be reduced
The Prefabrication difficulty of cored slab processed, and negative bending moment rib is arranged after hollow board prefabrication production.
Two sides wall construction on cored slab on its span direction is identical and arranged symmetrically, wherein each of span centre region 1
Equal level is machined with the first fin 13 disposed in parallel and the second fin 14 up and down on side wall, wherein the first fin 13 and second convex
The second through slot 15 is formed between rib 14, and the thickness A of the first fin 13 is less than the thickness B of the second fin 14.The plate in span centre region 1
Side uses the form of non-vertical plane, is machined with fin and groove, in superposed floor assembling, the plate side of two neighboring cored slab
Docking, two the second fins 14 are in close contact, the gap there are gap between two the first fins 13, between two cored slabs
It is poured concrete, to guarantee being reliably connected for adjacent two plates plate side seams.
Claims (8)
1. a kind of glomeration builds the superimposed sheet unidirectional precast hollow slab in gradual change section, it is characterised in that: it includes span centre region (1)
And it is located at the standoff region (2) at span centre region (1) both ends, the bottom surface of span centre region (1) and the bottom surface of standoff region (2) are located at
Same level, and the thickness of standoff region (2) is less than the thickness of span centre region (1), the span centre region (1) of cored slab along its across
Degree direction is machined with several through-holes (11), and several through-holes (11) are arranged in parallel in the horizontal direction, each standoff region
(2) top surface offers several first through slots (21), several first through slots (21) along the span direction of span centre region (1)
And one-to-one correspondence connection setting, the both upper ends thereof of span centre region (1) identical as the quantity of several through-holes (11) are processed respectively
Have several U-lags (12), the open end of U-lag (12) is located at the both ends in span centre region (1) span direction, several described
U-lag (12) is uniformly arranged, and the lower part of U-lag (12) and through-hole (11) perforation are arranged.
2. a kind of glomeration according to claim 1 builds the superimposed sheet unidirectional precast hollow slab in gradual change section, feature exists
In: the first through slot (21) in standoff region (2) is arc-shaped slot, the through-hole (11) that the center line of the arc-shaped slot communicates therewith
Center line be located along the same line.
3. a kind of glomeration according to claim 1 or 2 builds the superimposed sheet unidirectional precast hollow slab in gradual change section, feature
Be: being respectively spaced a through-hole (11) between each adjacent two U-lag (12), each U-lag (12) with through-hole below
(11) face is arranged.
4. a kind of glomeration according to claim 3 builds the superimposed sheet unidirectional precast hollow slab in gradual change section, feature exists
In: the width (L) of cored slab is the multiple of 200mm.
5. a kind of glomeration according to claim 1 or 2 builds the superimposed sheet unidirectional precast hollow slab in gradual change section, feature
Be: the plate thickness of standoff region (2) is not less than 50mm, and the plate thickness of span centre region (1) is identical as the thickness of superposed floor.
6. a kind of glomeration according to claim 5 builds the superimposed sheet unidirectional precast hollow slab in gradual change section, feature exists
In: the length range of each standoff region (2) is 300mm~500mm.
7. a kind of according to claim 1, glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section described in 2,4 or 6,
Be characterized in that: the lower part of cored slab is embedded with several sagging moment muscle (3), and several sagging moment muscle (3) along its span direction
It is arranged in parallel in the horizontal direction.
8. a kind of glomeration according to claim 7 builds the superimposed sheet unidirectional precast hollow slab in gradual change section, feature exists
In: the two sides wall construction on cored slab on its span direction is identical and arranged symmetrically, wherein each side wall of span centre region (1)
Upper equal level is machined with the first fin (13) disposed in parallel and the second fin (14) up and down, wherein the first fin (13) and second
It is formed between fin (14) the second through slot (15), and the thickness (A) of the first fin (13) is less than the thickness of the second fin (14)
(B)。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558706.4A CN109440991A (en) | 2018-12-19 | 2018-12-19 | A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section |
| PCT/CN2019/121991 WO2020125378A1 (en) | 2018-12-19 | 2019-11-29 | One-way precast hollow slab having gradually varying cross section for laminated slab of agglomeration building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558706.4A CN109440991A (en) | 2018-12-19 | 2018-12-19 | A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109440991A true CN109440991A (en) | 2019-03-08 |
Family
ID=65560334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811558706.4A Pending CN109440991A (en) | 2018-12-19 | 2018-12-19 | A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109440991A (en) |
| WO (1) | WO2020125378A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125378A1 (en) * | 2018-12-19 | 2020-06-25 | 哈尔滨达城绿色建筑技术开发股份有限公司 | One-way precast hollow slab having gradually varying cross section for laminated slab of agglomeration building |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681592B (en) * | 2020-12-15 | 2022-06-14 | 河北工业大学 | Prefabricated slab and beam connecting structure based on reinforcement connection and construction method thereof |
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| KR101701416B1 (en) * | 2016-07-14 | 2017-02-01 | (주)에스앤씨산업 | Precast Concrete Deck for Long-Span Slab and the Slab using it |
| US20180023296A1 (en) * | 2016-07-21 | 2018-01-25 | Meadow Burke, Llc | Lifting and leveling insert for a precast concrete slab |
| CN106401052A (en) * | 2016-10-21 | 2017-02-15 | 季兆桐 | Prefabricated prestressed hollow slab and preparing method thereof |
| CN106401036A (en) * | 2016-11-16 | 2017-02-15 | 浙江工业大学工程设计集团有限公司 | Assembled type steel framework prefabricated concrete floor slab structure |
| CN106555453A (en) * | 2017-02-04 | 2017-04-05 | 赤峰市建筑科学研究院有限公司 | A kind of prefabricated overlapped hollow plate of prestressing force and its construction method |
| CN106639094A (en) * | 2017-02-21 | 2017-05-10 | 哈尔滨达城绿色建筑技术开发股份有限公司 | Assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board for aggregate building |
| CN107023103A (en) * | 2017-06-06 | 2017-08-08 | 广西大学 | A kind of part overlaps superimposed sheet with holes |
| CN209339419U (en) * | 2018-12-19 | 2019-09-03 | 哈尔滨达城绿色建筑技术开发股份有限公司 | A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125378A1 (en) * | 2018-12-19 | 2020-06-25 | 哈尔滨达城绿色建筑技术开发股份有限公司 | One-way precast hollow slab having gradually varying cross section for laminated slab of agglomeration building |
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| WO2020125378A1 (en) | 2020-06-25 |
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