CN106836594B - Multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system and production method - Google Patents
Multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system and production method Download PDFInfo
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- CN106836594B CN106836594B CN201710050583.2A CN201710050583A CN106836594B CN 106836594 B CN106836594 B CN 106836594B CN 201710050583 A CN201710050583 A CN 201710050583A CN 106836594 B CN106836594 B CN 106836594B
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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
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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
Abstract
The invention discloses a kind of multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system and production methods, including peripheral frame (7) and more than two Prefabricated hollow grid cells.Prefabricated hollow grid cell includes wind up empty stomach mesh module, lower edge empty stomach mesh module and concrete shear key.Empty stomach of winding up mesh module includes the chord member two of one or more chord member one and one piece or more, and lower edge empty stomach mesh module includes the chord member four of one or more chord member three and one piece or more.Empty stomach of winding up mesh module is fixed on the surface of lower edge empty stomach mesh module by concrete shear key.The invention also discloses a kind of production methods of multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system, the construction method of prefabrication and assembly construction proposed by the present invention, it is used in the ratio between length direction Lx and span direction Ly Lx/Ly > 1.5, construction speed is accelerated while construction cost is greatly lowered.
Description
Technical field
The present invention relates to a kind of spaces for the public and industrial building that multilayer large-span superstructure plane is long narrow rectangle plane
Structural system, and in particular to a kind of multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system and production method.
Background technique
For a long time in building engineering field, the reinforced concrete floor of multilayer large-span building rests on always frame
Frame, primary-secondary beam system, such as a three floor gymnasium building, superstructure plane is 30m × 37.5m=1125 ㎡, and periphery pillar net is
7.5m, i.e. span direction Ly=4 × 7.5m=30m, length direction Lx=5 × 7.5m=37.5m, using the traditional knot of such as Fig. 1
Structure system, concrete (C40) converting thickness 47cm/ ㎡, steel using amount is (between 135kg~150kg)/㎡.As the whole nation has every year
250 such to complete for use, it needs nearly 40 ten thousand stere of concrete, and 120,000 tons of steel.The mid-90 in last century and sheet
The patented technology (ZL97200102.6 and ZL200610200188.X) that initial stage in century occurs, i.e. " steel reinforced concrete shearing force keyed
The two-way big plate of empty stomach (also known as open-spandrel sandwich board) ", " the big panel ceiling for storied building of U-shaped steel concrete combined hollow ".Concrete amount 24cm/
㎡, between rolled steel dosage (70kg/ ㎡~80kg/ ㎡), annual 250,20.3 ten thousand stere of concrete amount, rolled steel dosage
6.33 ten thousand tons, annual to save 19.7 ten thousand stere of concrete, 5.67 ten thousand tons of saving steel, concrete unit price presses 0.12 ten thousand yuan/m3
(material, transport template etc.), steel 0.8 ten thousand yuan/ton (processing, transport, raw material etc.) of unit price, on an empty stomach using orthogonal spatial every year
It is 2.364 hundred million+4.536 hundred million=6.9 hundred million yuan total to save RMB for superstructure.Fig. 2 is opposite Fig. 1 plane using orthogonal spatial empty stomach
Floor structure scheme figure.Such multilayer large-span superstructure (Fig. 2) meets three principles and requirements of circular economy, analyzes from dialectics
Problem, things has dual character, and while advantage is shown, deficiency also occurs in practice, and such as Fig. 2 superstructure, it is propped up at the scene
Template is wire-tie in-situ casting construction, and the upper and lower chord node of concrete orthogonal spatial laced beam shares 308, need to make at the scene
Make, shuttering, which is wire-tie, makes cumbersome, consuming working hour, thus proposition fabricated assembly overall orthogonal spatial concrete empty stomach superstructure
Novel construction method makes building cover structure construction reach industrialization.
But it as the ratio between its length direction (Lx) of multilayer large-span superstructure plane and span direction (Ly) Lx/Ly > 1.5, then adopts
With orthogonal spatial hollow floor system, space three-dimensional stress is remarkably decreased, and economy is affected.That declares in April, 2015 is " big
Span armored concrete orthogonal-diagonal lattice hollow floor system and preparation method thereof (application number 201510211060.2) ", makes Long-span Multi-storey Frame
Long narrow shape plane superstructure space three-dimensional stress is spent, span L y=30m, length Lx=52.5m, every layer of superstructure area up to 1575m2's
Superstructure uniform force, if still using orthogonal spatial hollow floor system, the ratio between Lx and Ly Lx/Ly=52.5/30=1.75, superstructure
Load is along short transmitting 81%, and along its length only 19%, keep superstructure stress extremely uneven.Such as use orthogonal-diagonal lattice concrete
Hollow floor system, superstructure load are uniformly transferred along 450 direction of both sides, and while saving project cost, empty stomach position is built
The central air-conditioning pipe mechanical floor needed, regular grid moulding, replaces conventional furred ceiling, significantly saves engineering and makes
Valence.But this superstructure span is big, area is big, and conventional construction process die amount is big, constructs cumbersome, and the present invention is proposing multilayer large-span just
It hands over and tiltedly puts assembled integral hollow floor system and production method.
Summary of the invention
It is an object of the invention to overcome drawbacks described above of the existing technology, a kind of multilayer large-span orthogonal-diagonal lattice is proposed
Assembly concrete hollow floor system and production method.
The present invention solves its technical problem and is achieved through the following technical solutions:
Multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system, including peripheral frame (7), cast-in-situ floor and two
A above Prefabricated hollow grid cell, establishes reference axis in the plane where peripheral frame (7), in peripheral frame (7) institute
Plane on take an origin as coordinate points, take a horizontal direction as coordinate points in the plane where peripheral frame (7)
X-axis, the Y-axis by the coordinate points direction vertical relative to X-axis as coordinate points, the downside of peripheral frame (7) and X-axis are flat
Row, the left side of peripheral frame (7) are parallel with Y-axis；Length on the downside of peripheral frame (7) in X-axis is Lx, and peripheral frame (7) is left
Length of the side in Y-axis is Ly, and Lx/Ly > 1.5, the Prefabricated hollow grid cell are surrounded flat in peripheral frame (7)
It is arranged in face；The Prefabricated hollow grid cell includes wind up empty stomach mesh module, lower edge empty stomach mesh module, concrete shear
Key (2) and steel bar truss floor support plate；
It is described wind up empty stomach mesh module by concrete shear key (2) be fixed on lower edge empty stomach mesh module just on
Side；The empty stomach mesh module that winds up includes the string that two or more the chord members being parallel to each other one (61) and two or more are parallel to each other
Bar two (62), the chord member one (61) and chord member two (62) are mutually orthogonal in the same plane；Described two or more are parallel to each other
Chord member one (61) and two or more the chord members two (62) being parallel to each other surround square one；
The lower edge empty stomach mesh module includes that two or more the chord members being parallel to each other three (63) and two or more are mutually flat
Capable chord member four (64), the chord member three (63) and chord member four (64) are mutually orthogonal in the same plane；Described two or more phases
The chord member four (64) that mutually parallel chord member three (63) and two or more are parallel to each other surrounds square two；
Described square one is equal with the side length of square two；
The angle of the chord member one (61) and X-axis is 45 degree, and the angle of the chord member three (63) and X-axis is 45 degree, described
Chord member one (61) and chord member three (63) are symmetrical above and below, and the angle of the chord member two (62) and Y-axis is 45 degree, the chord member four (64)
Angle with Y-axis is 45 degree, and the chord member two (62) and the chord member four (64) are symmetrical above and below；
Described concrete shear key (2) one end is mounted on the orthogonal place of chord member one (61) and chord member two (62), while described
Four angles at the orthogonal place of chord member one (61) and chord member two (62) are mounted on rest (1), and the concrete shear key
(2) other end is mounted on the chord member three (63) place orthogonal with chord member four (64)；
The chord member one (61) is provided with reserved stirrup one (41) away from the side of lower edge empty stomach mesh module, and the string
One end of bar one (61) is provided with the first reserved steel bar stress one (511), and the other end is provided with the second reserved steel bar stress one
(512), and the reserved stirrup one (41) with the first reserved steel bar stress one (511), the second reserved steel bar stress one (512)
It is perpendicular；
The chord member two (62) is provided with reserved stirrup two (42) away from the side of lower edge empty stomach mesh module, and the string
One end of bar two (62) is provided with the first reserved steel bar stress two (521), and the other end is provided with the second reserved steel bar stress two
(522), and reserved stirrup two (42) mutually hangs down with reserved first steel bar stress two (521), the second reserved steel bar stress two (522)
Directly；
One end of the chord member three (63) is provided with the first reserved steel bar stress three (531), and it is pre- that the other end is provided with second
Stay steel bar stress three (532)；
One end of the chord member four (64) is provided with the first reserved steel bar stress four (541), and it is pre- that the other end is provided with second
Stay steel bar stress four (542)；
For two adjacent Prefabricated hollow grid cells, the first reserved stress of one of Prefabricated hollow grid cell
Second reserved steel bar stress one (512) connection of reinforcing bar one (511) and another Prefabricated hollow grid cell；One of them is prefabricated
Second reserved stress steel of the reserved steel bar stress two (521) of the first of empty stomach grid cell and another Prefabricated hollow grid cell
Muscle two (522) connection；The reserved steel bar stress three (531) of the first of one of Prefabricated hollow grid cell and another prefabricated sky
Reserved steel bar stress three (532) connection of the second of abdomen grid cell；The first of one of Prefabricated hollow grid cell it is reserved by
Second reserved steel bar stress four (542) connection of power reinforcing bar four (541) and another Prefabricated hollow grid cell；
And the Prefabricated hollow grid cell for abutting peripheral frame (7), the first reserved steel bar stress one (511), second
Reserved steel bar stress one (512), the first reserved steel bar stress two (521), the second reserved steel bar stress two (522), first are reserved
Steel bar stress three (531), the second reserved steel bar stress three (532), the first reserved steel bar stress four (541) and the second reserved stress
Reinforcing bar four (542) is connect with the reserved chord member of peripheral frame (7)；
The cast-in-situ floor include it is first cast-in-place, second cast-in-place, third is cast-in-place, the 4th cast-in-place, the 5th cast-in-place, the 6th existing
Pour, wherein described first it is cast-in-place be the first reserved steel bar stress one (511) and the second reserved steel bar stress one (512) junction
It is cast-in-place, second it is cast-in-place be showing for the first reserved steel bar stress two (521) and the second reserved steel bar stress two (522) junction
It pours, it is the cast-in-place of the first reserved steel bar stress three (531) and the second reserved steel bar stress three (532) junction that third is cast-in-place,
Four it is cast-in-place be the cast-in-place of the first reserved steel bar stress four (541) and the second reserved steel bar stress four (542) junction, the 5th is cast-in-place
For the cast-in-place of peripheral frame (7), the 6th it is cast-in-place be cast-in-place at the top of Prefabricated hollow grid cell；
The steel bar truss floor support plate is set in one region of square that chord member one (61) and chord member two (62) are surrounded,
And the steel bar truss floor support plate is arranged on the rest (1) surrounded in a square region.
Further, the multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system mainly by A unit, unit B,
C cell and D unit is combined and spliced forms, the A unit includes three strings bar one (61), two chord members two (62), three strings bar
Three (63) and two chord members four (64), the unit B include two chord members one (61), two chord members two (62), two chord members three
(63) and two chord members four (64), the C cell include two chord members one (61), a chord member two (62), two chord members three
(63) and a chord member four (64), the D unit include a chord member one (61), a chord member two (62), a chord member three
(63) and a chord member four (64).
Further, the steel bar truss floor support plate includes way and double-layer steel bar girder and sheet metal, the way and double-layer
Steel bar girder is connected with sheet metal by stool muscle.
The production method of multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system: the following steps are included:
(1) prefabricated chord member one (61), chord member two (62), chord member three (63) and chord member four (64), chord member one (61) and chord member
Two (62) are orthogonal to constitute wind up empty stomach mesh module, chord member three (63) and the orthogonal composition lower edge empty stomach grid mould of chord member four (64)
Block, the empty stomach mesh module that winds up are fixed on the surface of lower edge empty stomach mesh module, coagulation by concrete shear key (2)
Native shear connector (2) one end is mounted on chord member one (61) place orthogonal with chord member two (62), the installation of concrete shear key (2) other end
At the orthogonal place of chord member three (63) and chord member four (64)；
(2) empty stomach of winding up mesh module and lower edge empty stomach mesh module connect by concrete shear key (2) to be formed it is prefabricated
Empty stomach grid cell, the Prefabricated hollow grid cell require to be combined connection, a Prefabricated hollow according to peripheral frame (7)
Second reserved steel bar stress one of the reserved steel bar stress one (511) of the first of grid cell and another Prefabricated hollow grid cell
(512) it carries out waiting strong ties using straight thread casing (9)；First reserved steel bar stress of one of Prefabricated hollow grid cell
Second reserved steel bar stress two (522) of two (521) and another Prefabricated hollow grid cell is carried out using straight thread casing (9)
Equal strong ties；The reserved steel bar stress three (531) of the first of one of Prefabricated hollow grid cell and another Prefabricated hollow net
The reserved steel bar stress three (532) of the second of lattice unit carries out waiting strong ties using straight thread casing (9)；One of Prefabricated hollow
Second reserved steel bar stress four of the reserved steel bar stress four (541) of the first of grid cell and another Prefabricated hollow grid cell
(542) it carries out waiting strong ties using straight thread casing (9)；
(3) the one region inner cover steel bar truss floor support plate of square surrounded in chord member one (61) and chord member two (62),
Steel bar truss floor support plate is arranged on the rest (1) in surrounded one region of square；
(4) respectively in the first reserved steel bar stress one (511) and the second reserved steel bar stress one (512) junction, first
Reserved steel bar stress two (521) and the second reserved steel bar stress two (522) junction, the first reserved steel bar stress three (531) and
Second reserved steel bar stress three (532) junction, the first reserved steel bar stress four (541) and the second reserved steel bar stress four
(542) junction, Prefabricated hollow grid cell top and peripheral frame (7) carry out cast-in-place concrete, reach to curing cycle
After carry out subsequent processing.
The invention has the benefit that
Key point of the invention is that the space lattice of field fabrication is converted to traditional empty stomach grid superstructure blocking
Prefabricated hollow grid cell, while being Lx/Ly > in the ratio between the length of peripheral frame and span by orthogonal spatial grid before
Orthogonal-diagonal lattice grid is changed to when 1.5, so that the scope of application further expansion of open-spandrel sandwich board, the case where rectangle plane is arranged
Under also can reach the purpose of component uniform stressed.These units are prefabricated in precasting yard, the still in-situ casting such as peripheral frame.From Fig. 3
It analyzes three floors and covers chord member and shared more than 900 nodes of lower boom, all made in precasting yard, i.e., 90% or more work
It measures and is processed in precasting yard, formwork cost and working hour is greatly reduced, scene is only in the junction of modules and prefabricated sky
The top second pouring concrete of abdomen grid cell.Prefabricated assembled construction technology is used on the basis of new structure, is promoted
The industrialized development of building structure.
Detailed description of the invention
Fig. 1 is the long narrow shape plane orthogonal-diagonal lattice concrete empty stomach superstructure plan view of multilayer large-span；
Fig. 2 is that Fig. 1 superstructure is divided into tetra- kinds of prefabricated units of A, B, C, D, prefabricated scheme of installation；
Fig. 3 is orthogonal-diagonal lattice precast concrete empty stomach grid cell A, B, C, D arrangement schematic diagram between six column nets of Fig. 2；
Fig. 4 is that the corresponding unit B of Fig. 3 is winded up empty stomach mesh module floor map；
Fig. 5 is the schematic cross-section of cross shear connector in the corresponding unit B of Fig. 3；
Fig. 6 is that the corresponding C cell of Fig. 3 winds up empty stomach mesh module floor map；
Fig. 7 is the schematic cross-section of cross shear connector in the corresponding C cell of Fig. 3；
Fig. 8 is the profile construction schematic diagram of the corresponding unit B of Fig. 3.
Description of symbols
1- rest, 2- concrete shear key, 41- reserve stirrup one, 42- reserves stirrup two, 511- first reserves stress steel
Muscle one, 512- second reserve steel bar stress one, 521- first reserve steel bar stress two, 522- second reserve steel bar stress two,
531- first, which reserves steel bar stress three, 532- second and reserves steel bar stress three, 541- first, reserves steel bar stress four, 542- second
Reserved steel bar stress four, 61- chord member one, 62- chord member two, 63- chord member three, 64- chord member four, 7- peripheral frame, 9- straight thread set
Pipe.
Specific embodiment
Below by specific embodiment, the invention will be further described, and it is not limit that following embodiment, which is descriptive,
Qualitatively, this does not limit the scope of protection of the present invention.
Implement the present invention be directed to three floor lids, specific span L y=30m, length Lx=52.5m, length-width ratio Lx/Ly
=37.5/30=1.75.As shown in Fig. 2, superstructure is divided into tetra- kinds of Prefabricated hollow grid cells of A, B, C, D, wherein A unit 24, B
Unit 8, C cell 3, D unit 21, it is whole to form assembly for these units in-site installation after precasting yard production in batches
Body formula multilayer large-span orthogonal-diagonal lattice concrete space empty belly lattice superstructure.
Multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system, including peripheral frame 7, cast-in-situ floor and two
Above Prefabricated hollow grid cell establishes reference axis in the plane where peripheral frame 7, flat where peripheral frame 7
It takes an origin as coordinate points on face, takes a horizontal direction as the X-axis of coordinate points in the plane where peripheral frame 7, lead to
Y-axis of the coordinate points direction vertical relative to X-axis as coordinate points is crossed, the downside of peripheral frame 7 is parallel with X-axis, peripheral frame 7
Left side it is parallel with Y-axis；Length of 7 downside of peripheral frame in X-axis is Lx, length of 7 left side of peripheral frame in Y-axis is Ly,
And Lx/Ly> 1.5, Prefabricated hollow grid cell arrange in the plane that peripheral frame 7 is surrounded；Prefabricated hollow grid cell packet
Include the empty stomach mesh module that winds up, lower edge empty stomach mesh module, concrete shear key 2 and steel bar truss floor support plate；
Empty stomach of winding up mesh module is fixed on the surface of lower edge empty stomach mesh module by concrete shear key 2, winds up
Empty stomach mesh module includes the chord member 2 62 that two or more the chord members being parallel to each other 1 and two or more are parallel to each other, chord member one
61 is mutually orthogonal in the same plane with chord member 2 62, and two or more the chord members 1 being parallel to each other and two or more are parallel to each other
Chord member 2 62 surround square one.
Lower edge empty stomach mesh module includes the string that two or more the chord members being parallel to each other 3 63 and two or more are parallel to each other
Bar 4 64, chord member 3 63 are mutually orthogonal in the same plane with chord member 4 64.Two or more the chord members 3 63 and two being parallel to each other
The chord member 4 64 more than root being parallel to each other surrounds square two.
Square one is equal with the side length of square two.
Chord member 1 and the angle of X-axis are 45 degree, and the angle of chord member 3 63 and X-axis is 45 degree, chord member 1 and chord member three
63 is symmetrical above and below, and the angle of chord member 2 62 and Y-axis is 45 degree, and the angle of chord member 4 64 and Y-axis is 45 degree, 2 62 He of chord member
The chord member four (64) is symmetrical above and below.
One end of concrete shear key 2 is mounted on the orthogonal place of chord member 1 and chord member 2 62, while one 61 chord of chord member
Four angles at the orthogonal place of bar 2 62 are mounted on rest 1, and the length and width of rest 1 is equal.Concrete shear key 2
The other end is mounted on the place orthogonal with chord member 4 64 of chord member 3 63.
Chord member 1 is provided with reserved stirrup 1 away from the side of lower edge empty stomach mesh module, and one end of chord member 1
It is provided with the first reserved steel bar stress 1, the other end is provided with the second reserved steel bar stress 1, and reserved stirrup 1
It is perpendicular with the first reserved steel bar stress 1, the second reserved steel bar stress 1.
Chord member 2 62 is provided with reserved stirrup 2 42 away from the side of lower edge empty stomach mesh module, and one end of chord member 2 62
It is provided with the first reserved steel bar stress 2 521, the other end is provided with the second reserved steel bar stress 2 522, and reserved stirrup 2 42
It is perpendicular with reserved first steel bar stress 2 521, the second reserved steel bar stress 2 522.
One end of chord member 3 63 is provided with the first reserved steel bar stress 3 531, and the other end is provided with the second reserved stress steel
Muscle 3 532.
One end of chord member 4 64 is provided with the first reserved steel bar stress 4 541, and the other end is provided with the second reserved stress steel
Muscle 4 542.
For two adjacent Prefabricated hollow grid cells, the first reserved stress of one of Prefabricated hollow grid cell
Second reserved steel bar stress 1 of reinforcing bar 1 and another Prefabricated hollow grid cell connects；One of Prefabricated hollow
Second reserved steel bar stress two of the first of grid cell reserved steel bar stress 2 521 and another Prefabricated hollow grid cell
522 connections；The reserved steel bar stress 3 531 of the first of one of Prefabricated hollow grid cell and another Prefabricated hollow grid list
The reserved steel bar stress 3 532 of the second of member connects；The reserved steel bar stress 4 541 of the first of one of Prefabricated hollow grid cell
It is connected with the second reserved steel bar stress 4 542 of another Prefabricated hollow grid cell.
And the Prefabricated hollow grid cell for abutting peripheral frame 7, the first reserved steel bar stress one 511, second are reserved
Steel bar stress 1, the first reserved steel bar stress 2 521, the second reserved steel bar stress 2 522, the first reserved steel bar stress three
531, the second reserved steel bar stress 3 532, the first reserved steel bar stress 4 541 and the second reserved steel bar stress 4 542 protrude into
To 7 inside of peripheral frame and it is anchored in concrete.
Cast-in-situ floor include it is first cast-in-place, second cast-in-place, third is cast-in-place, the 4th cast-in-place, the 5th cast-in-place, the 6th cast-in-place,
In, first it is cast-in-place to be the first reserved steel bar stress 1 cast-in-place with the second reserved one 512 junction of steel bar stress, second is existing
It pours as the cast-in-place of the first reserved steel bar stress 2 521 and the second reserved 2 522 junction of steel bar stress, cast-in-place third is first pre-
Stay the cast-in-place of steel bar stress 3 531 and the second reserved 3 532 junction of steel bar stress, the 4th it is cast-in-place be the first reserved steel bar stress
4 541 and second reserved 4 542 junction of steel bar stress it is cast-in-place, the 5th is cast-in-place cast-in-place for peripheral frame 7, and the 6th cast-in-place is
It is cast-in-place at the top of Prefabricated hollow grid cell；
Steel bar truss floor support plate is set in one region of square that chord member 1 and chord member 2 62 are surrounded, and reinforcing bar purlin
Frame floor support plate is arranged on the rest 1 in surrounded one region of square.Steel bar truss floor support plate includes way and double-layer reinforcing bar
Truss and sheet metal, way and double-layer steel bar girder and sheet metal are connected by stool muscle.
As shown in Fig. 2, multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system is mainly mono- by A unit, unit B, C
Member and D unit is combined and spliced forms, A unit includes one 61, two chord members 2 62 of three strings bar, three strings bar 3 63 and two strings
Bar 4 64, unit B include two chord members 3 63 of chord member 2 62, two of chord member one 61, two and two chord members 4 64, C cell packet
Include the chord member 3 63 of chord member 2 62, two of two chord members one 61, one and a chord member 4 64, D unit include a chord member 1,
2 62, chord members 3 63 of a piece chord member and a chord member 4 64.
The present invention is also that can use the 3 63, chord members 4 64 of chord member of chord member 2 62, one of chord member one 61, one
Prefabricated hollow grid cell is made, only such a unit volume is too small, and the place for needing to connect is excessive, and it is uneconomical, so
It does not use.
It is described below using production method step and relevant work principle of the invention:
In precasting yard, sub-unit makes the component of 90% or more superstructure area of the present invention in batches.The only cast-in-place peripheral frame in scene
Frame after the completion of peripheral frame construction, then installs prefabricated A, B or C cell, and the present invention uses concrete C40 to prefabricated sky
Abdomen grid cell is poured.
(1) prefabricated chord member 1, chord member 2 62, chord member 3 63 and chord member 4 64, chord member 1 and the orthogonal structure of chord member 2 62
At the empty stomach mesh module that winds up, chord member 3 63 and the orthogonal composition lower edge empty stomach mesh module of chord member 4 64, empty stomach of winding up grid mould
Block is fixed on the surface of lower edge empty stomach mesh module by concrete shear key 2, and one end of concrete shear key 2 is mounted on string
The place orthogonal with chord member 2 62 of bar 1, the other end are mounted on the orthogonal place of chord member 3 63 and chord member 4 64；
(2) empty stomach of winding up mesh module connect to form prefabricated sky with lower edge empty stomach mesh module by concrete shear key 2
Abdomen grid cell, Prefabricated hollow grid cell require to be combined connection, a Prefabricated hollow grid cell according to peripheral frame 7
The first reserved steel bar stress 1 and another Prefabricated hollow grid cell the second reserved steel bar stress 1 using straight
Threaded sleeve 9 carries out equal strong ties；The reserved steel bar stress 2 521 of the first of one of Prefabricated hollow grid cell and another
The reserved steel bar stress 2 522 of the second of Prefabricated hollow grid cell carries out waiting strong ties using straight thread casing 9；One of them is pre-
Second reserved stress steel of the first of empty stomach grid cell processed reserved steel bar stress 3 531 and another Prefabricated hollow grid cell
Muscle 3 532 carries out waiting strong ties using straight thread casing 9；First reserved steel bar stress of one of Prefabricated hollow grid cell
4 541 and the second reserved steel bar stress 4 542 of another Prefabricated hollow grid cell equal connect by force using straight thread casing 9
It connects；
(3) the one region inner cover steel bar truss floor support plate of square surrounded in chord member 1 and chord member 2 62, reinforcing bar
Truss floor support plate is arranged on the rest 1 in surrounded one region of square；
(4) respectively in the first reserved steel bar stress 1 and the second reserved one 512 junction of steel bar stress, first reserved
Steel bar stress 2 521 and the second reserved 2 522 junction of steel bar stress, the first reserved steel bar stress 3 531 and second it is reserved by
3 532 junction of power reinforcing bar, the first reserved steel bar stress 4 541 and the second reserved 4 542 junction of steel bar stress, Prefabricated hollow
At the top of grid cell and peripheral frame 7 carries out cast-in-place high level-one concrete C45, removes lower support after reaching curing cycle
Or scaffold carries out the next process of superstructure, or carries out the construction of second, third layer of prefabricated assembled superstructure.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system, it is characterised in that: including peripheral frame (7),
Cast-in-situ floor and more than two Prefabricated hollow grid cells, establish reference axis in the plane where peripheral frame (7),
It takes an origin as coordinate points in plane where peripheral frame (7), takes a level side in the plane where peripheral frame (7)
To the X-axis as coordinate points, Y-axis by the coordinate points direction vertical relative to X-axis as coordinate points, peripheral frame (7)
Downside is parallel with X-axis, and the left side of peripheral frame (7) is parallel with Y-axis；Length on the downside of peripheral frame (7) in X-axis is Lx, week
Length on the left of frame (7) in Y-axis is Ly, and Lx/Ly > 1.5, and the Prefabricated hollow grid cell is in peripheral frame (7)
Arrangement in the plane surrounded；The Prefabricated hollow grid cell include wind up empty stomach mesh module, lower edge empty stomach mesh module,
Concrete shear key (2) and steel bar truss floor support plate；
The empty stomach mesh module that winds up is fixed on the surface of lower edge empty stomach mesh module by concrete shear key (2)；Institute
Stating the empty stomach mesh module that winds up includes the chord member two that two or more the chord members being parallel to each other one (61) and two or more are parallel to each other
(62), the chord member one (61) and chord member two (62) are mutually orthogonal in the same plane；Described two or more the strings being parallel to each other
The chord member two (62) that bar one (61) and two or more are parallel to each other surrounds square one；
The lower edge empty stomach mesh module includes that two or more the chord members being parallel to each other three (63) and two or more are parallel to each other
Chord member four (64), the chord member three (63) and chord member four (64) are mutually orthogonal in the same plane；Described two or more mutually flat
The chord member four (64) that capable chord member three (63) and two or more are parallel to each other surrounds square two；
Described square one is equal with the side length of square two；
The angle of the chord member one (61) and X-axis is 45 degree, and the angle of the chord member three (63) and X-axis is 45 degree, the chord member
One (61) and chord member three (63) are symmetrical above and below, and the angle of the chord member two (62) and Y-axis is 45 degree, the chord member four (64) and Y
The angle of axis is 45 degree, and the chord member two (62) and the chord member four (64) are symmetrical above and below；
Described concrete shear key (2) one end is mounted on the orthogonal place of chord member one (61) and chord member two (62), while the chord member
Four angles at one (61) and the orthogonal place of chord member two (62) are mounted on rest (1), and the concrete shear key (2) is another
One end is mounted on the chord member three (63) place orthogonal with chord member four (64)；
The chord member one (61) is provided with reserved stirrup one (41) away from the side of lower edge empty stomach mesh module, and the chord member one
(61) one end is provided with the first reserved steel bar stress one (511), and the other end is provided with the second reserved steel bar stress one (512),
And the reserved stirrup one (41) is mutually hung down with the first reserved steel bar stress one (511), the second reserved steel bar stress one (512)
Directly；
The chord member two (62) is provided with reserved stirrup two (42) away from the side of lower edge empty stomach mesh module, and the chord member two
(62) one end is provided with the first reserved steel bar stress two (521), and the other end is provided with the second reserved steel bar stress two (522),
And it is perpendicular with reserved first steel bar stress two (521), the second reserved steel bar stress two (522) to reserve stirrup two (42)；
One end of the chord member three (63) is provided with the first reserved steel bar stress three (531), the other end be provided with second it is reserved by
Power reinforcing bar three (532)；
One end of the chord member four (64) is provided with the first reserved steel bar stress four (541), the other end be provided with second it is reserved by
Power reinforcing bar four (542)；
For two adjacent Prefabricated hollow grid cells, the first reserved steel bar stress of one of Prefabricated hollow grid cell
Second reserved steel bar stress one (512) connection of one (511) and another Prefabricated hollow grid cell；One of Prefabricated hollow
Second reserved steel bar stress two of the reserved steel bar stress two (521) of the first of grid cell and another Prefabricated hollow grid cell
(522) it connects；The reserved steel bar stress three (531) of the first of one of Prefabricated hollow grid cell and another Prefabricated hollow net
Reserved steel bar stress three (532) connection of the second of lattice unit；The reserved stress steel of the first of one of Prefabricated hollow grid cell
Second reserved steel bar stress four (542) connection of muscle four (541) and another Prefabricated hollow grid cell；
And the Prefabricated hollow grid cell for abutting peripheral frame (7), the first reserved steel bar stress one (511), second are reserved
Steel bar stress one (512), the first reserved steel bar stress two (521), the second reserved steel bar stress two (522), the first reserved stress
Reinforcing bar three (531), the second reserved steel bar stress three (532), the first reserved steel bar stress four (541) and the second reserved steel bar stress
Four (542) are connect with the reserved chord member of peripheral frame (7)；
The cast-in-situ floor include it is first cast-in-place, second cast-in-place, third is cast-in-place, the 4th cast-in-place, the 5th cast-in-place, the 6th cast-in-place,
In, described first it is cast-in-place be the first reserved steel bar stress one (511) and the second reserved steel bar stress one (512) junction shows
Pour, second it is cast-in-place be the cast-in-place of the first reserved steel bar stress two (521) and the second reserved steel bar stress two (522) junction,
Three it is cast-in-place be the cast-in-place of the first reserved steel bar stress three (531) and the second reserved steel bar stress three (532) junction, the 4th is cast-in-place
For the cast-in-place of the first reserved steel bar stress four (541) and the second reserved steel bar stress four (542) junction, the 5th it is cast-in-place be periphery
Frame (7) it is cast-in-place, the 6th it is cast-in-place be cast-in-place at the top of Prefabricated hollow grid cell；
The steel bar truss floor support plate is set in one region of square that chord member one (61) and chord member two (62) are surrounded, and institute
Steel bar truss floor support plate is stated to be arranged on the rest (1) surrounded in a square region.
2. multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system as described in claim 1, it is characterised in that: described
Multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system is mainly combined and spliced by A unit, unit B, C cell and D unit
It forms, the A unit includes three strings bar one (61), two chord members two (62), three strings bar three (63) and two chord members four
(64), the unit B includes two chord members one (61), two chord members two (62), two chord members three (63) and two chord members four
(64), the C cell includes two chord members one (61), a chord member two (62), two chord members three (63) and a chord member four
(64), the D unit includes a chord member one (61), a chord member two (62), a chord member three (63) and a chord member four
(64)。
3. multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor system as described in claim 1, it is characterised in that: described
Steel bar truss floor support plate includes way and double-layer steel bar girder and sheet metal, and the way and double-layer steel bar girder and sheet metal pass through plate
The connection of stool muscle.
4. one kind is based on the described in any item multilayer large-span orthogonal-diagonal lattice assembly concrete hollow floor systems of claims 1 to 3
Production method, it is characterised in that: the following steps are included:
(1) prefabricated chord member one (61), chord member two (62), chord member three (63) and chord member four (64), chord member one (61) and chord member two
It is (62) orthogonal to constitute wind up empty stomach mesh module, chord member three (63) and the orthogonal composition lower edge empty stomach mesh module of chord member four (64),
The empty stomach mesh module that winds up is fixed on the surface of lower edge empty stomach mesh module, concrete by concrete shear key (2)
Shear connector (2) one end is mounted on chord member one (61) place orthogonal with chord member two (62), and concrete shear key (2) other end is mounted on
The orthogonal place of chord member three (63) and chord member four (64)；
(2) empty stomach of winding up mesh module connect to form Prefabricated hollow with lower edge empty stomach mesh module by concrete shear key (2)
Grid cell, the Prefabricated hollow grid cell require to be combined connection, a Prefabricated hollow grid according to peripheral frame (7)
Second reserved steel bar stress one of the reserved steel bar stress one (511) of the first of unit and another Prefabricated hollow grid cell
(512) it carries out waiting strong ties using straight thread casing (9)；First reserved steel bar stress of one of Prefabricated hollow grid cell
Second reserved steel bar stress two (522) of two (521) and another Prefabricated hollow grid cell is carried out using straight thread casing (9)
Equal strong ties；The reserved steel bar stress three (531) of the first of one of Prefabricated hollow grid cell and another Prefabricated hollow net
The reserved steel bar stress three (532) of the second of lattice unit carries out waiting strong ties using straight thread casing (9)；One of Prefabricated hollow
Second reserved steel bar stress four of the reserved steel bar stress four (541) of the first of grid cell and another Prefabricated hollow grid cell
(542) it carries out waiting strong ties using straight thread casing (9)；
(3) the one region inner cover steel bar truss floor support plate of square surrounded in chord member one (61) and chord member two (62), reinforcing bar
Truss floor support plate is arranged on the rest (1) in surrounded one region of square；
(4) it is reserved respectively in the first reserved steel bar stress one (511) and the second reserved steel bar stress one (512) junction, first
Steel bar stress two (521) and the second reserved steel bar stress two (522) junction, the first reserved steel bar stress three (531) and second
Reserved steel bar stress three (532) junction, the first reserved steel bar stress four (541) and the second reserved steel bar stress four (542) are even
It connects place, Prefabricated hollow grid cell top and peripheral frame (7) and carries out cast-in-place concrete, carried out down after reaching curing cycle
One process.
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| CN107514082A (en) * | 2017-09-19 | 2017-12-26 | 贵州大学 | A kind of irregular II types large-span concrete hollow sandwich panel ceiling for storied building and preparation method |
| CN114215251A (en) * | 2022-01-28 | 2022-03-22 | 中国建筑西南设计研究院有限公司 | Steel grid sprayed concrete combined dome structure and construction method thereof |
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