CN107514083A - Side hangs reinforcing bar band shear key reinforced concrete slab structure and connection method - Google Patents

Side hangs reinforcing bar band shear key reinforced concrete slab structure and connection method Download PDF

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Publication number
CN107514083A
CN107514083A CN201710922923.6A CN201710922923A CN107514083A CN 107514083 A CN107514083 A CN 107514083A CN 201710922923 A CN201710922923 A CN 201710922923A CN 107514083 A CN107514083 A CN 107514083A
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CN
China
Prior art keywords
reinforcing bar
plate
concrete
shear key
hangs
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CN201710922923.6A
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Chinese (zh)
Inventor
李明
郭伟强
赵唯坚
吕安安
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Shenyang Jianzhu University
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Shenyang Jianzhu University
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Priority to CN201710922923.6A priority Critical patent/CN107514083A/en
Publication of CN107514083A publication Critical patent/CN107514083A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17Floor structures partly formed in situ
    • E04B5/18Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members

Abstract

The present invention relates to prefabricated assembled concrete structural construction field, specially a kind of side hangs reinforcing bar band shear key reinforced concrete slab structure and connection method.The structure includes:Shear key, precast concrete bottom plate, concrete cast-in-situ layer, the adjacent side docking of precast concrete bottom plate, each precast concrete bottom plate upper top set shear key and concrete cast-in-situ layer.Easily connect band shear key reinforced concrete slab structure and connection method of the invention, the precast concrete bottom reinforcement of original tape shear key concrete folding plate floor is changed to U-shaped steel muscle, U-shaped steel muscle is encorbelmented stretching from the side of precast concrete bottom plate (abbreviation side hangs reinforcing bar), reinforcing bar and junction steel plate power transmission are hanged by side, therefore make simpler, Path of Force Transfer is simpler clear and definite, and power transmission is more reliable.

Description

Side hangs reinforcing bar band shear key reinforced concrete slab structure and connection method
Technical field
The present invention relates to prefabricated assembled concrete structural construction field, specially a kind of side hangs reinforcing bar band shear key coagulation Native laminated floor slab structure and connection method.
Background technology
At present, in practical set formula concrete construction, floor it is commonly used be that self-bearing type steel bar girder concrete is folded Plywood, this kind of superimposed sheet have the shortcomings that floor is thicker, construction costs is high.In order to solve the above problems, in previous invention, Concrete folding plate floor with shear key, prefabricated construction and construction method (publication number CN102839773A), but in the invention In, be not directed to the reinforced concrete slab with shear key how to be connected with beam, the reinforced concrete slab with shear key with anti- Cut and how to connect between the reinforced concrete slab of key.In order to solve the above problems, in previous invention, improved band shearing resistance The concrete folding plate floor construction of key and connection method (publication number CN104727475A), this kind of structure and connection method, it is main Still the design philosophy of armored concrete is used, it is slightly complicated to make construction.
Therefore, the present invention proposes that side hangs bar connecting band shear key reinforced concrete slab structure and connection method, realize The power transmission of pulling force between each prefabricated components, have making more convenient, power transmission is more reliable, on-site consolidation is simpler, and construction quality is more The advantages that being easily guaranteed that.
The content of the invention
It is an object of the invention to provide a kind of side to hang reinforcing bar band shear key reinforced concrete slab structure and connection method, realizes The outstanding reinforcing bar band shear key reinforced concrete slab in side is connected with beam, side hangs reinforcing bar band shear key reinforced concrete slab and side hangs steel Connection between rib tape shear key reinforced concrete slab, meet actual engineering design construction needs.
Technical scheme:
A kind of side hangs reinforcing bar band shear key reinforced concrete slab structure, and the structure includes:Shear key, precast concrete bottom Plate, concrete cast-in-situ layer, the adjacent side docking of precast concrete bottom plate, each precast concrete bottom plate upper top set shearing resistance Key and concrete cast-in-situ layer;U-shaped connection reinforcing bar is provided with the plate bottom of precast concrete bottom plate, it is U-shaped that U-shaped connection reinforcing bar includes longitudinal direction The U-shaped connection reinforcing bar of reinforcing bar and horizontal U-shaped steel muscle, longitudinal U-shaped steel muscle and horizontal U-shaped steel muscle composition network structure.
Described side hangs reinforcing bar band shear key reinforced concrete slab structure, when side hangs reinforcing bar band shear key concrete folding Floor and side hang when connecting between reinforcing bar band shear key reinforced concrete slab, the top of two neighboring precast concrete bottom plate it Span sets recurvation square muscle;When side, which hangs reinforcing bar band shear key reinforced concrete slab, to be connected with central sill, two neighboring concrete The span on the top of native bottom plate sets recurvation square muscle;When side, which hangs reinforcing bar band shear key reinforced concrete slab, to be connected with side bar, side The span on beam top and the top of precast concrete bottom plate sets recurvation square muscle.
Described side hangs reinforcing bar band shear key reinforced concrete slab structure, when side hangs reinforcing bar band shear key concrete folding Floor and side hang when connecting between reinforcing bar band shear key reinforced concrete slab, the side of two neighboring precast concrete bottom plate it Between by supporting side hang reinforcing bar connected with junction steel plate and concrete cast-in-situ layer;Folded when side hangs reinforcing bar band shear key concrete Pass through supporting side when conjunction floor is connected with central sill, between the side of two neighboring precast concrete bottom plate and central sill top and hang steel Muscle, L-type connection reinforcing bar connect with junction steel plate and concrete cast-in-situ layer;When side hangs reinforcing bar band shear key reinforced concrete slab When being connected with side bar, pass through supporting side between the side of precast concrete bottom plate and side bar top and hang reinforcing bar, L-type connection reinforcing bar Connected with junction steel plate and concrete cast-in-situ layer.
Described side hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, and side hangs reinforcing bar band shear key and mixed It is as follows with the joining method between shear key reinforced concrete slab to coagulate the outstanding reinforcing bar of native laminated floor slab and side:
(1) two pieces of precast concrete bottom plates are lifted into precalculated position, the side of precast concrete bottom plate adjacent side hangs steel Muscle is in the same horizontal position, and each side hangs the both ends of reinforcing bar respectively with the close contact of precast concrete bottom plate, each prefabricated Vertical section is provided with the middle part of concrete floor;Open up reserving hole on junction steel plate on junction steel plate, it is pre- on the junction steel plate Hole of boxing out transversely is arranged, and corresponding with the vertical section that side hangs reinforcing bar, and junction steel plate is inserted in into the vertical portion that side hangs reinforcing bar Point, and side hangs to reinforcing bar stretches into the part of junction steel plate and junction steel plate welds together, or side is hanged into reinforcing bar and stretches out connection steel The part of plate is bent downwards, so as to complete the connection of the reinforcement of two pieces of precast concrete bottom plates;It is meanwhile two neighboring prefabricated The span on the top of concrete floor sets recurvation square muscle;
(2) the casting concrete in-situ layer on two pieces of precast concrete bottom plates of above-mentioned connection, concrete cast-in-situ layer with it is pre- Concrete floor processed hangs reinforcing bar by shear key, side and recurvation square muscle connects into strong construction.
Described side hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, and side hangs reinforcing bar and stretches out connection steel The downward 45-degree-buckling in part of plate.
Described side hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, and side hangs reinforcing bar band shear key and mixed The joining method for coagulating native laminated floor slab and central sill is as follows:
(1) for central sill when making, stirrup is stretched into pre-buried L-type connection reinforcing bar and stirrup, L-type connection reinforcing bar lower end in central sill In, the diameter of L-type connection reinforcing bar is not less than the U-shaped diameter for connecting reinforcing bar;
(2) two pieces of precast concrete bottom plates are lifted into central sill both sides, the side bottom of two pieces of precast concrete bottom plates with Beam outer ledge line connects, and the side of two pieces of precast concrete bottom plates hangs reinforcing bar in the same horizontal position, and side hangs the perpendicular of reinforcing bar The vertical section for being connected reinforcing bar with the L-type in central sill to part is in close contact;Junction steel plate is inserted in side and hangs reinforcing bar and L-type connection Reinforcing bar, and side is hanged into reinforcing bar and is connected with L-type that reinforcing bar stretches into the part of junction steel plate and junction steel plate welds together, or side is hanged Reinforcing bar, which is connected reinforcing bar with L-type and stretches into the part of junction steel plate, to be bent downwards, completes the steel of two pieces of precast concrete bottom plates and central sill Muscle connects;
(3) the casting concrete in-situ layer on two pieces of precast concrete bottom plates of above-mentioned connection, concrete cast-in-situ layer with it is pre- Concrete floor processed hangs reinforcing bar by shear key, side and recurvation square muscle connects into strong construction.
Described side hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, and side hangs reinforcing bar and is connected with L-type Reinforcing bar stretches into the downward 45-degree-buckling in part of junction steel plate.
Described side hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, and side hangs reinforcing bar band shear key and mixed The joining method for coagulating native laminated floor slab and side bar is as follows:
(1) for side bar when making, stirrup is stretched into pre-buried L-type connection reinforcing bar and stirrup, L-type connection reinforcing bar lower end in side bar In, the diameter of L-type connection reinforcing bar is not less than the U-shaped diameter for connecting reinforcing bar;
(2) precast concrete bottom plate is lifted on side bar, the vertical section that the L-type in side bar is connected to reinforcing bar is hanged with side The vertical section of reinforcing bar is in close contact, and is inserted into junction steel plate and is welded together, or side is hanged into reinforcing bar and is connected reinforcing bar with L-type The part for stretching into junction steel plate is bent downwards, completes the close connection of precast concrete bottom plate and side bar;Meanwhile side bar top with The span on the top of precast concrete bottom plate sets recurvation square muscle;
(3) the casting concrete in-situ layer on the precast concrete bottom plate of above-mentioned connection, concrete cast-in-situ layer mix with prefabricated Coagulate native bottom plate and strong construction is connected into by shear key, the outstanding reinforcing bar in side and recurvation square muscle.
Described side hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, the end of precast concrete bottom plate The distance that portion snaps into side bar is more than 100mm, and side, which hangs reinforcing bar and reinforcing bar is connected with L-type stretches into the part of junction steel plate, to be bent downwards 45°。
Outstanding joining method of the reinforcing bar with shear key reinforced concrete slab structure in described side, the four of precast concrete bottom plate Individual side is reserving hole steel support template, and reserving hole steel support template is made up of two steel bars above and below identical, is reserved Reserved at the axis of hole steel support template with reserving hole with steel loop, half be distributed between upper and lower two steel bar is fixed The corresponding composition reserving hole of hole, the outside corresponding section of upper and lower two steel bar set fixed steel loop, inserted by fixed steel bar Two steel bars above and below fixed steel loop connection, form overall reserving hole steel support template;During construction, first by longitudinal U-shaped steel At the reserving hole for the downside steel bar that muscle and horizontal U-shaped steel muscle both ends are placed on reserving hole steel support template, Ran Hou The corresponding upside steel bar for placing reserving hole steel support template, fixed steel bar is then inserted into fixed steel loop again, forms framework Structure;Last casting concrete, after concrete reaches expected intensity, fixed steel bar is removed, removes reserving hole steel supporting Template, form side and hang the prefabricated concrete floor of reinforcing bar.
Advantages of the present invention and beneficial effect are:
1st, side of the present invention hangs reinforcing bar band shear key reinforced concrete slab structure and connection method, and it is mixed with original tape shear key Native superimposed sheet floor construction is coagulated to compare:The precast concrete bottom reinforcement of original tape shear key concrete folding plate floor is changed to U-shaped steel muscle, U-shaped steel muscle are encorbelmented stretching (abbreviation side hangs reinforcing bar) from the side of precast concrete bottom plate, hang reinforcing bar and company by side Steel plate power transmission is connect, therefore making is simpler, Path of Force Transfer is simpler clear and definite, and power transmission is more reliable.
2nd, side of the present invention hangs reinforcing bar band shear key reinforced concrete slab structure and connection method, consolidates by using junction steel plate The side for determining precast concrete bottom plate hangs reinforcing bar, realizes that reinforcement moment of flexure produces the equivalent transmission of tension;By pre- in beam Stay L-type steel muscle and reinforcing bar is hanged using the L-type steel muscle of beam and the side of plate and connected with junction steel plate, realize precast concrete bottom plate plate end Fixation on beam;On-site consolidation is simpler, and construction quality is easier to ensure that.
3rd, the present invention is equally few with situ wet operation, and assembly rate is high, energy-conserving and environment-protective, the requirement for meeting Green Architectural Development The advantages of Deng prefabricated concrete structure.
Brief description of the drawings
Fig. 1 is U-shaped connection reinforcing bar graphics.
Fig. 2 is reserving hole steel support template graphics.
Fig. 3 be arrange shear key, steel support template precast concrete bottom plate graphics.
Fig. 4 is that side hangs the graphics that the prefabricated concrete floor of reinforcing bar completes.
Fig. 5 is the graphics of junction steel plate.
Fig. 6 is the graphics that two pieces of sides hang the prefabricated concrete floor steel reinforcement abutting joints of reinforcing bar.
Fig. 7 is that two pieces of sides for arranging junction steel plate hang the prefabricated concrete floor graphics of reinforcing bar.
Fig. 8 is Fig. 7 front view.
Fig. 9 is the graphics that Fig. 8 pours in-situ layer completion.
Figure 10 is the arrangement of reinforcement graphics of central sill 15.
The girder graphics of Figure 11 arrangement L-type connection reinforcing bars.
Figure 12 is the graphics for the steel reinforcement abutting joints that central sill 15 hangs reinforcing bar precast concrete with side.
Figure 13 is that the side for arranging junction steel plate hangs the graphics that the prefabricated concrete floor of reinforcing bar is connected with girder.
Figure 14 is that side hangs the graphics that the prefabricated concrete floor of reinforcing bar is connected completion with girder.
Figure 15 is the arrangement of reinforcement graphics of side bar.
Figure 16 is the 3-D view for the side bar for arranging L-type connection reinforcing bar.
Figure 17 is the 3-D view for the steel reinforcement abutting joints that side bar hangs reinforcing bar precast concrete with side.
Figure 18 is that the side for arranging junction steel plate hangs the graphics that the prefabricated concrete floor of reinforcing bar is connected with side bar.
Figure 19 is that side hangs the graphics that the prefabricated concrete floor of reinforcing bar is connected completion with side bar.
In figure, 1 reserving hole steel support template;2 reserving holes;3 fix steel bar;4 fix steel loop;5 shear keies;7 is vertical To U-shaped steel muscle;8 horizontal U-shaped steel muscle;9 sides hang reinforcing bar;10 precast concrete bottom plates;11 junction steel plates;Reserved on 12 junction steel plates Hole;13 recurvation square muscle;14 concrete cast-in-situ layers;15 central sills;16th, L-type connection reinforcing bar;17 stirrups;18 side bars.
Embodiment
As shown in Fig. 1-Figure 19, side of the invention hangs reinforcing bar band shear key reinforced concrete slab structure, main to include resisting Key 5, precast concrete bottom plate 10, concrete cast-in-situ layer 14 are cut, the adjacent side docking of precast concrete bottom plate 10 is each prefabricated The upper top of concrete floor 10 sets shear key 5 and concrete cast-in-situ layer 14.Wherein, the structure and system of precast concrete bottom plate 10 It is as follows to make process:
As Figure 1-Figure 4, the present invention is provided with shear key 5 on precast concrete bottom plate 10, according in Practical Project, resists Cut the distribution that key 5 needs the shearing that bears and pulling force determines shear key 5.Four sides of precast concrete bottom plate 10 are preformed holes Hole steel support template 1, reserving hole steel support template 1 are made up of two steel bars above and below identical, reserving hole steel supporting Reserving hole 2 and fixed steel loop 4 are carried at the axis of template 1, half of reserving hole being distributed between upper and lower two steel bar is relative Reserving hole 2 should be formed, the outside corresponding section of upper and lower two steel bar sets fixed steel loop 4, passes through the fixed fixed steel of the insertion of steel bar 3 Ring 4 connects two steel bars up and down, forms overall reserving hole steel support template 1.Set at the plate bottom of precast concrete bottom plate 10 There is U-shaped connection reinforcing bar, U-shaped connection reinforcing bar includes longitudinal U-shaped steel muscle 7 and horizontal U-shaped steel muscle 8, and longitudinal U-shaped steel muscle 7 and transverse direction are U-shaped Reinforcing bar 8 forms the U-shaped connection reinforcing bar of network structure.
During construction, longitudinal U-shaped steel muscle 7 and the horizontal both ends of U-shaped steel muscle 8 are placed on reserving hole steel supporting mould first At the reserving hole of the downside steel bar of plate 1, the upside steel bar of placement reserving hole steel support template 1 then is being corresponded to, then Fixed steel bar 3 is inserted into fixed steel loop 4 again, forms frame structure (see Fig. 3).Last casting concrete, treat that concrete reaches pre- After phase intensity, fixed steel bar 3 is removed, removes reserving hole steel support template 1, formed side and hang the prefabricated concrete floor of reinforcing bar 10。
The thickness of precast concrete bottom plate is highly consistent with reserving hole steel support template 1, is overlapped for actual design The half of plate thickness.The pulling force that can be undertaken according to the pulling force that can be undertaken at this connection reinforcing bar (Fig. 1) U-shaped not less than plate bottom calculates true Determine the shape and size of shear key, same to patent " concrete folding plate floor, prefabricated construction and the construction method of shear key " and " the improved concrete folding plate floor construction with shear key and connection method (CN102839773A) (CN104727475A)”。
As shown in Fig. 1 to Figure 19, side hangs splicing construction of the reinforcing bar with shear key reinforced concrete slab in engineering structure Mainly include three kinds with joining method:
(1) as shown in Fig. 5-Fig. 9, side hangs reinforcing bar band shear key reinforced concrete slab and mixed with the outstanding reinforcing bar band shear key in side The connection between native laminated floor slab is coagulated, its connection structure and method is as follows:
(1) as shown in Figure 5-Figure 8, two pieces of precast concrete bottom plates 10 are lifted into precalculated position, precast concrete bottom plate The sides of 10 adjacent sides hangs reinforcing bar 9 in the same horizontal position, and each side hang the both ends of reinforcing bar 9 respectively with precast concrete bottom Plate 10 is in close contact, and each middle part of precast concrete bottom plate 10 is provided with vertical section;Opened up on junction steel plate 11 on junction steel plate Reserving hole 12, reserving hole 12 is transversely arranged on the junction steel plate, and the vertical section for hanging with side reinforcing bar 9 is corresponding, By junction steel plate 11 be inserted in side hang reinforcing bar 9 vertical section, and by side hang reinforcing bar 9 stretch into junction steel plate 11 part and connection steel Plate 11 welds together, or side is hanged into the downward 45-degree-buckling in part that reinforcing bar 9 stretches out junction steel plate 11, prefabricated so as to complete two pieces The connection of the reinforcement of concrete floor 10.Meanwhile the span on the top of two neighboring precast concrete bottom plate 10 sets recurvation Square muscle 13.
(2) as shown in figure 9, on two pieces of precast concrete bottom plates of above-mentioned connection casting concrete in-situ layer 14, coagulation Native in-situ layer 14 hangs reinforcing bar 9 by shear key 5, side with precast concrete bottom plate 10 and recurvation square muscle 13 connects into strong construction.
Such a connection method, it is equally applicable to the end face of precast concrete bottom plate 10 and the docking of the end face of precast concrete bottom plate 10 The operating mode of connection.
(2) as shown in Figure 10-Figure 14, side hangs connection of the reinforcing bar with shear key reinforced concrete slab Yu central sill 15, and it connects It is as follows to connect structures and methods:
(1) as shown in Figure 10-Figure 11, central sill 15 is when making, pre-buried L-type connection reinforcing bar 16 and stirrup in central sill 15 17, L-type connection reinforcing bar 16 lower end is stretched into stirrup 17, and the diameter of L-type connection reinforcing bar 16 is not less than U-shaped connection reinforcing bar (Fig. 1) Diameter.
(2) as shown in Figure 12-Figure 13, two pieces of precast concrete bottom plates 10 are lifted into the both sides of central sill 15, two pieces prefabricated mixed The side bottom for coagulating native bottom plate 10 connects with beam outer ledge line, and the side of two pieces of precast concrete bottom plates 10 hangs reinforcing bar 9 same Horizontal level, and the vertical section of the outstanding reinforcing bar 9 in side is connected the vertical section close contact of reinforcing bar 16 with the L-type in central sill 15; Junction steel plate 11 is inserted in side and hangs reinforcing bar 9 and L-type connection reinforcing bar 16, and side hanged into reinforcing bar 9 is connected reinforcing bar 16 with L-type and stretch into connection The part of steel plate 11 and junction steel plate 11 weld together, or side is hanged into reinforcing bar 9 are connected reinforcing bar 16 with L-type and stretch into junction steel plate 11 The downward 45-degree-buckling in part, complete the bar connecting of two pieces of precast concrete bottom plates 10 and central sill 15.
(3) as shown in figure 14, casting concrete in-situ layer 14, coagulation on two pieces of precast concrete bottom plates of above-mentioned connection Native in-situ layer 14 hangs reinforcing bar 9 by shear key 5, side with precast concrete bottom plate 10 and recurvation square muscle 13 connects into strong construction.
Such a connection method, it is equally applicable to the situation of the end face of precast concrete bottom plate 10 and the connection of central sill 15.
(3) as shown in Figure 15-Figure 19, side hangs connection of the reinforcing bar with shear key reinforced concrete slab Yu side bar 18, and it connects It is as follows to connect structures and methods:
(1) as shown in Figure 15-Figure 16, side bar 18 is when making, pre-buried L-type connection reinforcing bar 16 and stirrup in side bar 18 17, L-type connection reinforcing bar 16 lower end is stretched into stirrup 17, and the diameter of L-type connection reinforcing bar 16 is not less than the U-shaped diameter for connecting reinforcing bar.
(2) as shown in Figure 17-Figure 18, precast concrete bottom plate 10 is lifted on side bar 18, precast concrete bottom plate 10 The distance of lapping ends to side bar 18 be more than 100mm;The vertical section of L-type connection reinforcing bar 16 in side bar 18 is hanged into steel with side The vertical section of muscle 9 is in close contact, and is inserted into junction steel plate 11 and is welded together, or side is hanged into reinforcing bar 9 and is connected steel with L-type Muscle 16 stretches into the downward 45-degree-buckling in part of junction steel plate 11, completes the close connection of precast concrete bottom plate 10 and side bar.Together When, the span on the top of side bar 18 and the top of precast concrete bottom plate 10 sets recurvation square muscle 13.
(3) as shown in figure 19, the casting concrete in-situ layer 14 on the precast concrete bottom plate of above-mentioned connection, concrete is existing Pour layer 14 and strong construction is connected into by shear key 5, the outstanding reinforcing bar 9 in side and recurvation square muscle 13 with precast concrete bottom plate 10.
Result of implementation shows, of the invention:1. precast concrete bottom plate uses reserving hole steel support template, more ring is made Protect, conveniently;2. the junction steel plate for hanging reinforcing bar between precast concrete bottom plate by being interspersed in side connects, site operation speed is fast, plate The power transmission of bottom sagging moment is reliable, being connected firmly between precast concrete bottom plate;3. precast concrete bottom end uses with side bar Side bar is connected with plate junction steel plate, convenient and quick construction, precast concrete bottom end and side bar firm and reliable connection;4. due to By the way of prefabricated and cast-in-place combination, the wet trade amount at the scene of reducing, ensure the globality of structure, save field fabrication mould Plate, energy-conserving and environment-protective, the demand for development of green building is accorded with, there is very big application space.

Claims (10)

1. a kind of side hangs reinforcing bar band shear key reinforced concrete slab structure, it is characterised in that the structure includes:It is shear key, pre- Concrete floor processed, concrete cast-in-situ layer, the adjacent side docking of precast concrete bottom plate, push up on each precast concrete bottom plate Portion sets shear key and concrete cast-in-situ layer;U-shaped connection reinforcing bar, U-shaped connection reinforcing bar are provided with the plate bottom of precast concrete bottom plate Including longitudinal U-shaped steel muscle and horizontal U-shaped steel muscle, the U-shaped connection steel of longitudinal U-shaped steel muscle and horizontal U-shaped steel muscle composition network structure Muscle.
2. hang reinforcing bar band shear key reinforced concrete slab structure according to the side described in claim 1, it is characterised in that when side hangs It is two neighboring when reinforcing bar band shear key reinforced concrete slab and side hang reinforcing bar with being connected between shear key reinforced concrete slab The span on the top of precast concrete bottom plate sets recurvation square muscle;Connect when side hangs reinforcing bar band shear key reinforced concrete slab with central sill When connecing, the span on the top of two neighboring precast concrete bottom plate sets recurvation square muscle;Folded when side hangs reinforcing bar band shear key concrete When conjunction floor is connected with side bar, the span on side bar top and the top of precast concrete bottom plate sets recurvation square muscle.
3. hang reinforcing bar band shear key reinforced concrete slab structure according to the side described in claim 1, it is characterised in that when side hangs It is two neighboring when reinforcing bar band shear key reinforced concrete slab and side hang reinforcing bar with being connected between shear key reinforced concrete slab Reinforcing bar is hanged between the side of precast concrete bottom plate by supporting side to connect with junction steel plate and concrete cast-in-situ layer;Work as side When outstanding reinforcing bar band shear key reinforced concrete slab is connected with central sill, side and the middle back of two neighboring precast concrete bottom plate Reinforcing bar is hanged by supporting side between portion, L-type connects reinforcing bar and connected with junction steel plate and concrete cast-in-situ layer;When side hangs reinforcing bar When band shear key reinforced concrete slab is connected with side bar, by supporting between the side of precast concrete bottom plate and side bar top Side hang reinforcing bar, L-type connection reinforcing bar connected with junction steel plate and concrete cast-in-situ layer.
4. the side described in a kind of one of claims 1 to 3 hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, Characterized in that, side hangs reinforcing bar band shear key reinforced concrete slab and side hangs reinforcing bar between shear key reinforced concrete slab Joining method it is as follows:
(1) two pieces of precast concrete bottom plates are lifted into precalculated position, the side of precast concrete bottom plate adjacent side hangs reinforcing bar and existed The same horizontal position, and the both ends of the outstanding reinforcing bar in each side are in close contact with precast concrete bottom plate respectively, each concrete Vertical section is provided with the middle part of native bottom plate;Open up reserving hole on junction steel plate on junction steel plate, preformed hole on the junction steel plate Hole is transversely arranged, and corresponding with the vertical section that side hangs reinforcing bar, and junction steel plate is inserted in the vertical section of the outstanding reinforcing bar in side, and Side hangs to reinforcing bar stretches into the part of junction steel plate and junction steel plate welds together, or side is hanged into the portion that reinforcing bar stretches out junction steel plate Divide bending downwards, so as to complete the connection of the reinforcement of two pieces of precast concrete bottom plates;Meanwhile two neighboring precast concrete The span on the top of bottom plate sets recurvation square muscle;
(2) the casting concrete in-situ layer on two pieces of precast concrete bottom plates of above-mentioned connection, concrete cast-in-situ layer mix with prefabricated Coagulate native bottom plate and strong construction is connected into by shear key, the outstanding reinforcing bar in side and recurvation square muscle.
5. hang joining method of the reinforcing bar with shear key reinforced concrete slab structure, its feature according to the side described in claim 4 It is, side hangs the downward 45-degree-buckling in part that reinforcing bar stretches out junction steel plate.
6. the side described in a kind of claim 1 hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, its feature It is, it is as follows that side hangs joining method of the reinforcing bar with shear key reinforced concrete slab and central sill:
(1) central sill when making, stretch into stirrup in central sill, L by pre-buried L-type connection reinforcing bar and stirrup, L-type connection reinforcing bar lower end Diameter of the diameter of type connection reinforcing bar not less than U-shaped connection reinforcing bar;
(2) two pieces of precast concrete bottom plates are lifted into central sill both sides, the side bottom of two pieces of precast concrete bottom plates with outside beam Lateral edges line connects, and the side of two pieces of precast concrete bottom plates hangs reinforcing bar in the same horizontal position, and side hangs the vertical portion of reinforcing bar The vertical section for being connected reinforcing bar with the L-type in central sill is divided to be in close contact;Junction steel plate is inserted in side and hangs reinforcing bar and L-type connection steel Muscle, and side is hanged into reinforcing bar and is connected with L-type that reinforcing bar stretches into the part of junction steel plate and junction steel plate welds together, or side is hanged into steel Muscle, which is connected reinforcing bar with L-type and stretches into the part of junction steel plate, to be bent downwards, completes the reinforcing bar of two pieces of precast concrete bottom plates and central sill Connection;
(3) the casting concrete in-situ layer on two pieces of precast concrete bottom plates of above-mentioned connection, concrete cast-in-situ layer mix with prefabricated Coagulate native bottom plate and strong construction is connected into by shear key, the outstanding reinforcing bar in side and recurvation square muscle.
7. hang joining method of the reinforcing bar with shear key reinforced concrete slab structure, its feature according to the side described in claim 4 It is, side hangs reinforcing bar and the downward 45-degree-buckling in part that reinforcing bar stretches into junction steel plate is connected with L-type.
8. the side described in a kind of claim 1 hangs joining method of the reinforcing bar with shear key reinforced concrete slab structure, its feature It is, it is as follows that side hangs joining method of the reinforcing bar with shear key reinforced concrete slab and side bar:
(1) side bar when making, stretch into stirrup in side bar, L by pre-buried L-type connection reinforcing bar and stirrup, L-type connection reinforcing bar lower end Diameter of the diameter of type connection reinforcing bar not less than U-shaped connection reinforcing bar;
(2) precast concrete bottom plate is lifted on side bar, the L-type in side bar is connected into the vertical section of reinforcing bar and side hangs reinforcing bar Vertical section be in close contact, be inserted into junction steel plate and weld together, or side hanged into reinforcing bar be connected reinforcing bar with L-type and stretch into The part of junction steel plate is bent downwards, completes the close connection of precast concrete bottom plate and side bar;Meanwhile side bar top with it is prefabricated The span on the top of concrete floor sets recurvation square muscle;
(3) casting concrete in-situ layer, concrete cast-in-situ layer and precast concrete on the precast concrete bottom plate of above-mentioned connection Bottom plate hangs reinforcing bar by shear key, side and recurvation square muscle connects into strong construction.
9. hang joining method of the reinforcing bar with shear key reinforced concrete slab structure, its feature according to the side described in claim 6 It is, the distance of lapping ends to the side bar of precast concrete bottom plate is more than 100mm, and the outstanding reinforcing bar in side is connected reinforcing bar with L-type and stretched into The downward 45-degree-buckling in part of junction steel plate.
10. hang splicing side of the reinforcing bar with shear key reinforced concrete slab structure according to the side described in one of claim 4~9 Method, it is characterised in that four sides of precast concrete bottom plate are reserving hole steel support templates, reserving hole steel supporting Template is made up of two steel bars above and below identical, with reserving hole and fixed steel at the axis of reserving hole steel support template Ring, the corresponding composition reserving hole of half of reserving hole being distributed between upper and lower two steel bar, the outside of upper and lower two steel bar are corresponding Place sets fixed steel loop, inserts fixed steel loop connection two steel bars up and down by fixed steel bar, forms overall reserving hole steel Support template;During construction, longitudinal U-shaped steel muscle and horizontal U-shaped steel muscle both ends are placed on reserving hole steel supporting mould first At the reserving hole of the downside steel bar of plate, then in the corresponding upside steel bar for placing reserving hole steel support template, Ran Houzai Steel loop is fixed into fixed steel bar insertion, forms frame structure;Last casting concrete, after concrete reaches expected intensity, tear open Except fixed steel bar, reserving hole steel support template is removed, side is formed and hangs the prefabricated concrete floor of reinforcing bar.
CN201710922923.6A 2017-09-30 2017-09-30 Side hangs reinforcing bar band shear key reinforced concrete slab structure and connection method Pending CN107514083A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110735492A (en) * 2019-10-28 2020-01-31 浙江中清大建筑产业化有限公司 Connecting structure of prestressed hollow composite slabs and construction method thereof
CN113027020A (en) * 2019-12-24 2021-06-25 贺州通号装配式建筑有限公司 Prefabricated floor slab installation node and construction method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110735492A (en) * 2019-10-28 2020-01-31 浙江中清大建筑产业化有限公司 Connecting structure of prestressed hollow composite slabs and construction method thereof
CN113027020A (en) * 2019-12-24 2021-06-25 贺州通号装配式建筑有限公司 Prefabricated floor slab installation node and construction method thereof

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