CN109914665A - Connection structure of floor deck and fabricated concrete beam - Google Patents
Connection structure of floor deck and fabricated concrete beam Download PDFInfo
- Publication number
- CN109914665A CN109914665A CN201910238730.8A CN201910238730A CN109914665A CN 109914665 A CN109914665 A CN 109914665A CN 201910238730 A CN201910238730 A CN 201910238730A CN 109914665 A CN109914665 A CN 109914665A
- Authority
- CN
- China
- Prior art keywords
- precast concrete
- concrete beam
- floor
- steel
- stirrup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 50
- 239000011178 precast concrete Substances 0.000 claims abstract description 83
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 238000005452 bending Methods 0.000 claims abstract 8
- 230000002787 reinforcement Effects 0.000 claims description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 238000009415 formwork Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 52
- 229910052742 iron Inorganic materials 0.000 description 26
- 239000007787 solid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明公开了一种楼承板与装配式混凝土梁的连接结构。预制混凝土梁的上端面沿长度方向间隔固定设有多个梁箍筋，预制混凝土梁在与梁箍筋的连接处形成轴对称的台阶面，每个台阶面上分别搭接有一排楼承板，每排楼承板主要由多个闭口型钢楼承板沿预制混凝土梁的长度方向依次搭接构成；多个板底附加钢筋沿预制混凝土梁的长度方向间隔铺设在相邻两排楼承板上，预制混凝土梁箍筋的上方铺设有由多个负弯矩钢筋横纵构成的钢筋网结构，混凝土将预制混凝土梁箍筋、板底附加钢筋和钢筋网结构浇注在闭口型钢楼承板内形成现浇混凝土楼层板。本发明可以免支模，降低底模重量，从而减少运输、吊装及安装工作量。
The invention discloses a connection structure of a floor deck and an assembled concrete beam. The upper end surface of the precast concrete beam is fixed with a plurality of beam stirrups at intervals along the length direction. The precast concrete beam forms an axially symmetrical step surface at the connection with the beam stirrup, and each step surface is overlapped with a row of floor decks. Each row of floor decks is mainly composed of a plurality of closed steel floor decks lapped in sequence along the length direction of the precast concrete beams; a plurality of additional steel bars at the bottom of the slabs are laid at intervals along the length direction of the precast concrete beams on the adjacent two rows of floor decks On the top of the precast concrete beam stirrups, a steel mesh structure composed of multiple negative bending moment steel bars is laid horizontally and vertically. Form cast-in-place concrete floor slabs. The present invention can be free of supporting formwork and reduce the weight of the bottom formwork, thereby reducing the workload of transportation, hoisting and installation.
Description
Technical field
The invention belongs to floor support plate mounting technique fields, and in particular to a kind of connection of floor support plate and assembly concrete beam
Structure.
Background technique
In recent years with the implementation energetically of prefabricated concrete structure, the dosage of assembly concrete component is increasing, especially
It is the precast slab in concrete folding plate.But the bed die as assembled superimposed sheet, precast slab exist
Volume is big, and the weight of monolithic concrete prefabricated board is big, and many inconvenience is brought to component conveying, lifting and in-site installation.
Summary of the invention
To solve precast slab existing in the prior art, peace big to assembled architecture bring freight volume of making bed die
Difficult problem is filled, the present invention provides the connection structures of a kind of floor support plate and assembly concrete beam.
Technical scheme is as follows:
The present invention include silent fashioned iron floor support plate, precast concrete beam, precast concrete beam stirrup, board bottom additional bar and
Negative reinforcement, precast concrete beam top flange surface are successively spaced along beam direction and are fixed with multiple precast concrete beam hoops
Muscle, each precast concrete beam stirrup edge are arranged perpendicular to beam direction and are fixed in the surface of precast concrete beam top flange
Portion, the width of precast concrete beam stirrup is less than the width of precast concrete beam, so that precast concrete beam stirrup two sides is pre-
Beams of concrete top flange processed surface forms symmetrical two step surfaces, undertakes row's floor support plate respectively on each step surface, often
Row's floor support plate, which is mainly successively overlapped along precast concrete beam direction in same plane by multiple silent fashioned iron floor support plates, to be constituted；Lou Cheng
Casting concrete on plate, concrete height are higher than at the top of precast concrete beam stirrup, and multiple board bottom additional bars are along concrete
The direction Tu Liang, which is successively spaced, to be laid between adjacent two rows of floor support plates, and each board bottom additional bar is along perpendicular to concrete
The direction Tu Liang is laid with and is embedded in concrete；Precast concrete beam stirrup upper berth is equipped with and is made of multiple negative reinforcement reinforcing bars
Reinforcing bar web frame, reinforcing bar web frame is embedded in concrete, reinforcing bar web frame across and be located at precast concrete beam stirrup two
Above two rows of floor support plates of side, board bottom additional bar, reinforcing bar web frame, silent fashioned iron floor support plate are by the integral shape of concreting
At cast-in-place concrete floor plates.
Preferably, the silent fashioned iron floor support plate is the steel sole plate that section has overlap edge and peak structure, steel sole plate
Middle part be successively spaced processing there are two peak structure, the upper end of each peak structure is in closed up-side down triangle, peak structure
Lower end assume diamond in shape, two overlap edges are located at the both ends of steel sole plate, the overlap edge at both ends towards being bent to form hook solid in the same direction,
Each hook solid is bent towards the middle part of steel plate close to the lower part of steel sole plate, the two neighboring silent fashioned iron in row's floor support plate
Floor support plate is connected by overlap edge.
Preferably, reinforcing bar web frame includes multiple lateral arrangements and longitudinally arranged negative reinforcement, precast concrete beam
The negative reinforcement of the lateral arrangement of more spaced and parallel arrangements, the top of lateral negative reinforcement are equipped with above stirrup
It is equipped with the longitudinally arranged negative reinforcement of more spaced and parallel arrangements.
Preferably, the distance between floor support plate of adjacent two rows is less than the width of precast concrete beam, while being equal to prefabricated
The width of the width of beams of concrete stirrup, each step surface is not less than 30mm.
Preferably, each precast concrete beam stirrup is U-shaped stirrup, and multiple U-shaped stirrups are concentric and arranged in parallel
At the middle part of the upper surface of precast concrete beam, the both ends of the open side of U-shaped stirrup respectively with the upper surface of precast concrete beam
It is fixedly connected, the width that the distance between both ends of U-shaped stirrup open side are less than precast concrete beam makes precast concrete beam
Symmetrical step surface is formed at the both sides of the edge in the width direction of upper surface.
The beneficial effects of the present invention are:
The present invention exempts from formwork in use, can reach in Practical Project, reduces bed die weight, reduces transport, lifting and installation
The effect of workload can remove high and big die plate support from especially in building the high logistics warehouse of the big layer of assembly concrete.
Detailed description of the invention
Fig. 1 is silent fashioned iron floor support plate and precast concrete beam overlapped structural schematic diagram；
Fig. 2 is the side connecting node schematic diagram of silent fashioned iron floor support plate and precast concrete beam and beam stirrup.
In figure, 1 is silent fashioned iron floor support plate, 2 be precast concrete beam, 3 be precast concrete beam stirrup, 4 be that board bottom is attached
Add reinforcing bar, 5 be negative reinforcement, 6 be cast-in-place concrete floor plates.
Specific embodiment
Technical solution of the present invention is further described below and in conjunction with accompanying drawings and embodiments.
As shown in Figure 1, silent fashioned iron floor support plate 1 is the steel sole plate with overlap edge and peak structure, the middle part of steel sole plate
Successively interval processing is in closed up-side down triangle, the lower end of peak structure there are two peak structure, the upper end of each peak structure
It assumes diamond in shape, the both sides of each diamond shape lower part are connect with the two sides of the bottom of steel sole plate respectively, and two overlap edges are located at steel sole plate
Both ends, the overlap edge at both ends is bent to form hook solid in the same direction upward, and each hook solid is close to the lower part of steel sole plate towards steel
The middle part of plate is bent, and the two neighboring silent fashioned iron floor support plate 1 in row's floor support plate is connected by overlap edge.Specifically wherein one
The overlap edge of a silent fashioned iron floor support plate 1 is nested on the overlap edge of another silent fashioned iron floor support plate 1, so that adjacent two
The overlap edge of a silent fashioned iron floor support plate 1 is bonded to each other in closed type, and the lower part of the hook solid of two fitting overlap edges is constituted
The diamond shape of closure.
As shown in Fig. 2, adjacent two rows floor support plate is connected by precast concrete beam 2 and board bottom additional bar 4, concrete
Native 2 top flange surface of beam is successively spaced along beam direction is fixed with multiple precast concrete beam stirrups 3, each precast concrete beam
Stirrup 3 is along the middle part for being arranged and being fixed on 2 top flange surface of precast concrete beam perpendicular to beam direction, precast concrete beam hoop
The width of muscle 3 is less than the width of precast concrete beam 2, so that 2 upper limb of precast concrete beam of 3 two sides of precast concrete beam stirrup
Edge surface forms symmetrical two step surfaces, undertakes row's floor support plate on each step surface respectively, every row's floor support plate mainly by
Multiple silent fashioned iron floor support plates 1 successively overlap composition in same plane along 2 direction of precast concrete beam；Coagulation is poured on floor support plate
Soil, concrete height are higher than the top of precast concrete beam stirrup 3, multiple board bottom additional bars 4 along 2 direction of precast concrete beam according to
Minor tick is laid between adjacent two rows of floor support plates, and each board bottom additional bar 4 is along perpendicular to 2 direction of precast concrete beam
It is laid with and is embedded in concrete；The reinforcing bar being made of multiple 5 transverse and longitudinals of negative reinforcement is equipped on precast concrete beam stirrup 3
Web frame, reinforcing bar web frame are embedded in concrete, reinforcing bar web frame across and be located at 3 two sides of precast concrete beam stirrup two
It arranges above floor support plate, board bottom additional bar 4, reinforcing bar web frame, silent fashioned iron floor support plate 1 are integrally formed existing by concreting
Pouring concrete floor plates 6.
Reinforcing bar web frame includes multiple lateral arrangements and longitudinally arranged negative reinforcement 5, precast concrete beam stirrup 3
Top is equipped with the negative reinforcement 5 of the lateral arrangement of more spaced and parallel arrangements, and the top of lateral negative reinforcement 5 is laid with
There is the longitudinally arranged negative reinforcement 5 of more spaced and parallel arrangements.In specific implementation, the transverse direction of negative reinforcement 5 with it is prefabricated
The length direction of beams of concrete 2 is consistent, and horizontal and vertical arranged direction is mutually perpendicular to.
As shown in Figure 1 and Figure 2, the distance between floor support plate of adjacent two rows is less than the width of precast concrete beam 2, simultaneously
Equal to the width of precast concrete beam stirrup 3, the width of each step surface is not less than 30mm.
In specific implementation, precast concrete beam stirrup 3 is U-shaped stirrup, or Qian type stirrup.Multiple U-shaped stirrups are same
The middle part of axle center and the upper surface arranged in parallel in precast concrete beam 2, the both ends of the open side of U-shaped stirrup are respectively and in advance
The upper surface of beams of concrete 2 processed is fixedly connected, and the distance between both ends of U-shaped stirrup open side are less than precast concrete beam 2
Width makes precast concrete beam 2 form symmetrical step surface at the both sides of the edge in the width direction of upper surface.
Specific construction process of the invention is as follows:
Step 1: precast concrete beam 2 is built between two precast concrete columns, in the upper of production precast concrete beam 2
End reserves precast concrete beam stirrup 3, and the step surface in 3 two sides of precast concrete beam stirrup overlaps the silent fashioned iron building of a row respectively
The width of board 1, each step surface is not less than 30mm, and the bottom surface that silent fashioned iron floor support plate 1 is in contact with step surface is shelved on
On precast concrete beam 2, so that the two sides of silent 1 width direction of fashioned iron floor support plate are overlapped on adjacent precast concrete beam respectively
2 it is upper, thus achieve the effect that exempt from support.
Step 2: each silent fashioned iron floor support plate 1 of row is laid with by the following method: wherein one among adjacent two
The overlap edge of a silent fashioned iron floor support plate 1 is nested on the overlap edge of another silent fashioned iron floor support plate 1, so that two neighboring
The overlap edge of silent fashioned iron floor support plate 1 is bonded to each other in closed type, and the lower part of the hook solid of two fitting overlap edges, which is constituted, to be closed
Mould assembly.Shape silent fashioned iron floor support plate 1 in a row is successively laid with according to above-mentioned laying method.
Step 3: it is additional to be laid with board bottom in the junction of precast concrete beam 2 and the silent fashioned iron floor support plate 1 in its two sides
Reinforcing bar 4 is laid with board bottom additional bar 4, board bottom additional bar by each peak structure and overlap edge of silent fashioned iron floor support plate 1
4 specification and spacing is configured according to floor Force Calculation result.La in Fig. 2 indicates the anchorage length of tension reinforcement, according to steel
Muscle diameter is arranged by " Code for design of concrete structures " requirement.
Step 4: being laid with the hogging moment of more spaced and parallel arrangements and lateral arrangement in the top of precast concrete beam stirrup 3
Reinforcing bar 5, then more spaced and parallel arrangements and longitudinally arranged negative reinforcement 5 are laid in the top of Heng Xiang negative reinforcement 5.
Obtained by the spacing of negative reinforcement 5 and the diameter hogging moment according to suffered by floor plate top at the precast beam calculate, and press " concrete knot
Structure design specification " setting is required, to meet the topology requirement on floor plates top.
Step 5: board bottom additional bar 4 and negative reinforcement 5 are poured by the casting concrete on silent fashioned iron floor support plate 1
The cast-in-place concrete floor plates 6 with certain plate thickness H are formed in floor plates.By pouring for floorslab concrete, make prefabricated mixed
Solidifying soil beam 2, column and cast-in-place concrete floor plates 6 become whole.Slab thickness H is true by calculating according to the span and load of plate
It is fixed, generally between 100mm~180mm.The present invention does not use concrete prefabricated board, passes through silent floor support plate and precast concrete
The installation of bed die is saved in the connection of beam, reduces bed die weight, and good mechanical performance, support effect are good.
Embodiment one
Now calculated by taking BD65-185 closo floor support plate as an example the mechanical property under the big loading condition such as logistics warehouse with
Illustrate the Optimality of the structure.
S1: setting floor basic parameter is shown in Table 1:
Table 1
S2: calculate BD65-185 closo floor support plate allows support span, is specifically shown in Table 2:
Table 2
Span is calculated without support by the permission that the stress and strain controlled condition of table 2 obtain BD65-185 closo floor support plate
Are as follows: 3007mm；Allow without support clear span to be 2942mm.
S3: the longitudinal shear capacity of composite floor is checked, is shown in Table 3:
Table 3
Seen from table 3, the design load of composite floor, which is less than, allows evenly load design value, therefore combination of the invention
Floor connection structure meets the requirement of longitudinal shear resistance bearing capacity.
S4: to composite floor fireproof construction analytical calculation, can in defined structure fire resistance limit time, structure across
Middle section forward direction resist torque Ms=14.8m-kN (every meter of wide cut)；Support section negative sense resist torque MH=16.8m-kN；Freely-supported
In the case of action moment MO=14.6m-kN:
Ms>MO
Ms+MH>MO
Ms+0.5MH>MO
It can thus be concluded that: the spaning middle section forward direction resist torque and negative sense resist torque of structure are all larger than the work in the case of freely-supported
Use moment MO, can exempt to add fire resisting reinforcing bar, therefore the fire resistance of combination floor support plate of the invention meets prescribed requirement.
By embodiment one it is found that the composite floor formed in assembly concrete with connection structure of the invention is complete
The load-bearing of structure floor can be met entirely, fire prevention etc. requires.Especially prominent is steel floor support plate from heavy and light (BD65-185 gauge steel building
Board thickness 1mm, weight are only 0.158kN/m2), greatly facilitate transport and the installation of worker.And the good power of steel floor support plate
Learn performance so that compared with large span floor without using support, such as the BD65-185 gauge steel floor support plate in embodiment one
No-support spaning distance can save high and big die plate support up to 3m, therefore in building the high logistics warehouse of the big layer of assembly concrete,
So that construction is safer and economical.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910238730.8A CN109914665A (en) | 2019-03-27 | 2019-03-27 | Connection structure of floor deck and fabricated concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910238730.8A CN109914665A (en) | 2019-03-27 | 2019-03-27 | Connection structure of floor deck and fabricated concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109914665A true CN109914665A (en) | 2019-06-21 |
Family
ID=66967121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910238730.8A Pending CN109914665A (en) | 2019-03-27 | 2019-03-27 | Connection structure of floor deck and fabricated concrete beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109914665A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984449A (en) * | 2019-11-25 | 2020-04-10 | 清华大学 | Precast concrete floor and construction method thereof |
| CN111576706A (en) * | 2020-05-25 | 2020-08-25 | 上海宝冶集团有限公司 | Reinforcing bar truss floor carrier plate leak protection thick liquid connecting plate |
| CN114370108A (en) * | 2020-10-16 | 2022-04-19 | 万平华 | Method for building assembled concrete house by adopting novel connecting end component |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120028762A (en) * | 2010-09-15 | 2012-03-23 | 한국건설기술연구원 | Composite beam of precast concrete beam and deck plate |
| CN202440972U (en) * | 2012-03-01 | 2012-09-19 | 江苏银环新型建材科技有限公司 | Lightweight closed building bearing plate |
| CN209817214U (en) * | 2019-03-27 | 2019-12-20 | 浙江大学建筑设计研究院有限公司 | A connection structure between a floor deck and a prefabricated concrete beam |
-
2019
- 2019-03-27 CN CN201910238730.8A patent/CN109914665A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120028762A (en) * | 2010-09-15 | 2012-03-23 | 한국건설기술연구원 | Composite beam of precast concrete beam and deck plate |
| CN202440972U (en) * | 2012-03-01 | 2012-09-19 | 江苏银环新型建材科技有限公司 | Lightweight closed building bearing plate |
| CN209817214U (en) * | 2019-03-27 | 2019-12-20 | 浙江大学建筑设计研究院有限公司 | A connection structure between a floor deck and a prefabricated concrete beam |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984449A (en) * | 2019-11-25 | 2020-04-10 | 清华大学 | Precast concrete floor and construction method thereof |
| CN111576706A (en) * | 2020-05-25 | 2020-08-25 | 上海宝冶集团有限公司 | Reinforcing bar truss floor carrier plate leak protection thick liquid connecting plate |
| CN114370108A (en) * | 2020-10-16 | 2022-04-19 | 万平华 | Method for building assembled concrete house by adopting novel connecting end component |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101936054B (en) | Steel truss web combined PC beam and construction method thereof | |
| CN105839823B (en) | A kind of hollow superposed floor of close rib of truss-like | |
| CN109914665A (en) | Connection structure of floor deck and fabricated concrete beam | |
| CN104929294A (en) | Concrete composite plate with built-in cross hollow square steel pipes | |
| US4050213A (en) | Method of erecting a multi-story building | |
| CN112324037A (en) | Steel bar truss prestressed concrete laminated slab and manufacturing method thereof | |
| CN105952044B (en) | Fully-prefabricated prestressed concrete floor structure and prestressed assembly method | |
| CN213359049U (en) | Assembled superimposed sheet | |
| CN108316533A (en) | Bidirectional laminated slab and prestressed concrete prefabricated component and making and construction method | |
| CN107989247B (en) | Assembled superposed hollow floor system and construction method thereof | |
| CN107254930B (en) | Broad-width hollow superimposed sheet | |
| CN110185182A (en) | Concrete folding plate construction is with being stably connected with structure and construction method | |
| CN210238896U (en) | A stable connection structure for the construction of concrete laminated slabs | |
| CN107012985A (en) | A kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder | |
| CN115198786B (en) | H-shaped reinforced concrete tower crane beam foundation borne by main body structure and reinforcing method | |
| CN209817214U (en) | A connection structure between a floor deck and a prefabricated concrete beam | |
| CN216239247U (en) | Laminated floor slab with hollow mold | |
| CN215716414U (en) | One-way close rib composite floor | |
| CN215211883U (en) | Pre-tensioned pre-stressed frame assembly structure system | |
| CN214006187U (en) | Prefabricated dense rib plate | |
| CN213390771U (en) | Welding-free laminated plate | |
| CN112900949B (en) | Assembled reinforced concrete unidirectional multi-ribbed laminated slab floor and construction method thereof | |
| CN116927397A (en) | Support-free composite floor slab and construction method thereof | |
| CN211646903U (en) | Prefabricated section steel concrete superimposed sheet | |
| CN218149157U (en) | Prestressed concrete steel pipe truss superimposed sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |