CN209585463U - A kind of connection structure of precast stair - Google Patents
A kind of connection structure of precast stair Download PDFInfo
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- CN209585463U CN209585463U CN201821169588.3U CN201821169588U CN209585463U CN 209585463 U CN209585463 U CN 209585463U CN 201821169588 U CN201821169588 U CN 201821169588U CN 209585463 U CN209585463 U CN 209585463U
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Abstract
The utility model discloses a kind of connection structures of precast stair, its key points of the technical solution are that including stair module and side wall；The upper and lower ends of stair module along its length are respectively fixedly connected with reinforcing bar, and the end that connection reinforcing bar stretches out stair module is provided with enlarged footing, and the outer diameter of enlarged footing is greater than the outer diameter of connection reinforcing bar；Side wall includes upper prefabricated panel and lower prefabricated panel, and third post-cast strip is arranged therebetween；Along the pre-buried dowel at least one side of its width direction, dowel protrudes into inside third post-cast strip stair module, and stair module is connected by third post-cast strip with side wall；The vertical hollow hole in third post-cast strip concreting channel is provided as in upper prefabricated panel.Precast stair is attached using sleeve with other components, and third post-cast strip is poured by vertical hollow hole, easy for construction, and the structure entirety shock resistance after being installed is good.
Description
Technical field
The utility model relates to assembled architecture fields, and in particular to a kind of connection structure of precast stair.
Background technique
In existing assembled architecture, concrete prefabricated stairs used can be divided into two classes, and one kind is that end is concordant, not have
The precast stair of exposed steel bar is set, and one kind is that two ends are provided with the precast stair for stretching out reinforcing bar.First kind precast stair
When installation, both ends are overlapped on landing beam, and through bolt up and down is arranged sometimes and is attached with landing beam.Such stair
Due to only overlapping, so shock resistance is poor；Even if being connected with, due to bolt limited amount, it is easy to broken by shearing force
It is bad, so equally existing the disadvantage of shock resistance difference.Second class precast stair install when, end stretch out reinforcing bar and cast-in-situ wall or
The reinforcement welding of cast-in-situ stair half space plate, this kind of seismic resistance is good, but welding workload is big, and construction efficiency is low.
Utility model content
One purpose of the utility model is to provide a kind of precast stair, and the precast stair is easy for installation, and installs
Structure entirety shock resistance after is good.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of precast stair, packet
Stair module is included, the upper and lower ends of stair module along its length are respectively fixedly connected with reinforcing bar, and connection reinforcing bar stretches out stair module
End be provided with enlarged footing, the outer diameter of enlarged footing is greater than the outer diameter of connection reinforcing bar.
By above technical scheme, stair module and other components for being embedded with enlarged footing reinforcing bar use sleeve connection, set
The installation of cylinder is more convenient compared to welding, and the connection is stronger compared to overlapping or being bolted, and shock resistance is more preferable.
Further, connection reinforcing bar elongated setting or pre-buried setting in part in stair module.
Further, pre-buried deformed bar along its length in stair module.
Further, enlarged footing is arranged in the end that deformed bar stretches out stair module, and the outer diameter of enlarged footing is greater than answers in advance
The outer diameter of power reinforcing bar.
By above technical scheme, connecting reinforcing bar can use the bar frame having by oneself in stair module, can also be independent
Pre-buried thicker reinforcing bar is carried out at both ends, applicability is stronger；Deformed bar enhances the anti-bending strength of precast stair, saves steel
Muscle dosage；The enlarged footing sleeve connection of deformed bar enlarged footing and other component embedded bars, further increases connection
Reliability.
Further, stair inside modules embedded bar rack.
Further, bar frame includes the lower steel mesh that upper steel mesh and upper steel mesh are oppositely arranged in parallel, upper reinforcing bar
Spacer bar net is connected between net and lower steel mesh.
Further, stair inside modules penetrate through several hollow holes of setting along its length.
By above technical scheme, bar frame structure itself has good resistance to compression anti-bending strength, so as to pass through
Reduce the model of reinforcing bar used in bar frame, to reduce the arrangement of reinforcement in stair module, saves material, mitigate self weight；Hollow hole
Setting can equally mitigate self weight.
Further, at least one side pre-buried dowel of the stair module along its width direction.
Further, dowel is pre-buried U-shaped reinforcing bar, and the open end of U-shaped reinforcing bar is pre-buried in stair module.
By above technical scheme, the dowel of side is protruded into the wall body structure of stair module side, makes stair
Entirety is formed with wall, improves shock resistance.
Further, built-in fitting is arranged in the upper and lower end parts of stair module along its length.
Further, built-in fitting includes pre-embedded steel slab and/or pre-buried angle bar and/or built-in bolt sleeve.
By above technical scheme, when installation, stair module and other components are attached using connecting plate and bolt,
Reinforcement is carried out to temporary support.
It further, further include half space plate, the half space plate is located at the end of stair module；Half space plate
It is integrally formed with stair module, connection reinforcing bar penetrates through half space plate, and stretches out from the end face of half space plate.
By above technical scheme, half space plate and stair module are integrally formed, and reduce cast in situs half space
The process of plate, and the globality of the two connection is more preferable；In addition, stretch out the connection reinforcing bar with enlarged footing equally can with it is other
Component sleeve connection forms the better structure of shock resistance.
Second purpose of the utility model is to provide a kind of connection structure of precast stair, which makes prefabricated building
Ladder is effectively connect with end wall, forms the better building structure of shock resistance.The above-mentioned technical purpose of the utility model is to pass through
What following technical scheme was achieved: a kind of connection structure of precast stair, including end wall and it is connected with half space plate
Precast stair；The upper and lower end of precast stair along its length at least one end and end wall connecting, end wall
The second post-cast strip is reserved at the position that body is connect with precast stair.
Further, the second reinforcing mat is set in the second post-cast strip, and the second reinforcing mat includes several elongated reinforcing bars, elongated steel
Muscle periphery hoop sets several stirrups.
By above technical scheme, after connection reinforcing bar protrudes into the second post-cast strip, due to the setting of enlarged footing, reinforcing bar is connected not
It is easy to be pulled out, to improve whole shock resistance；The setting of second reinforcing mat strengthens the limitation to enlarged footing, further mentions
High shock resistance.
The third purpose of the utility model is to provide a kind of connection structure of precast stair, which makes prefabricated building
Ladder is effectively connect with half space plate, forms the better building structure of shock resistance.The above-mentioned technical purpose of the utility model is logical
Cross what following technical scheme was achieved: a kind of connection structure of precast stair, including precast stair and half space plate；Rest
The platform board side fixed platform dowel opposite with stair module, the end that platform dowel stretches out half space plate, which is arranged, to be expanded
Major part, enlarged footing outer diameter are greater than platform dowel outer diameter, platform dowel with to connect reinforcing bar connected using sleeve, opened up on sleeve
With the matched mounting hole of enlarged footing；First post-cast strip is set between stair module and half space plate.
By above technical scheme, precast stair and half space plate sleeve connection are not only easy for construction, but also connect
Securely, whole shock resistance is good.
4th purpose of the utility model is to provide a kind of connection structure of precast stair, the structure by precast stair with
Side wall is connected, and whole shock resistance is good.The above-mentioned technical purpose of the utility model is to be able to reality by the following technical programs
Existing: a kind of connection structure of precast stair, including side wall and precast stair, precast stair is along the two sides of its width direction
At least side is connected with side wall, and third post-cast strip is reserved in side wall and precast stair junction, and dowel protrudes into third
Inside post-cast strip.
Further, third reinforcing mat is set in third post-cast strip, and third reinforcing mat includes several elongated reinforcing bars, elongated steel
Muscle periphery hoop sets several stirrups.
By above technical scheme, third post-cast strip side wall is connect with precast stair it is integral so that prefabricated building
Ladder in side with construction wall in addition to also effectively being connect, making building structure globality, antidetonation other than its both ends is attached
Property is more preferable.
In conclusion the utility model has the following beneficial effects:
1, precast stair and peripheral member use sleeve connection, more convenient compared to welding, and the connection is compared to overlap joint
Or it is bolted stronger, shock resistance is more preferable；
2, precast stair and end wall, side wall and half space are effectively connected, and make stair and other components
Entirety is formed, the shock resistance of the globality of building is improved；
3, the setting of bar frame and deformed bar strengthens the intensity of precast stair, and reduces amount of reinforcement.
Detailed description of the invention
Fig. 1 is the precast stair structural schematic diagram for being embedded with connection reinforcing bar；
Fig. 2 is to connect the precast stair structural schematic diagram that reinforcing bar is elongated setting；
Fig. 3 is the structural schematic diagram that stair module and half space plate use sleeve connection；
Fig. 4 is the stair module for being provided with built-in fitting and the attachment structure schematic diagram of half space plate；
Fig. 5 is the stair modular structure schematic diagram that side is provided with U-shaped reinforcing bar；
Fig. 6 is the structural schematic diagram of stair module Yu side wall connecting；
Fig. 7 is the schematic view of facade structure of stair module Yu side wall connecting；
Fig. 8 is structural schematic diagram of the two sides of stair module with side wall connecting；
Fig. 9 is half space plate and the integrally formed precast stair of stair module and end connecting structure of wall schematic diagram；
Figure 10 is the stair modular structure schematic diagram for being provided with single layer deformed bar；
Figure 11 is the stair modular structure schematic diagram for being provided with double-layer prestressed reinforcing bar；
Figure 12 is the stair modular structure schematic diagram for being provided with bar frame；
Figure 13 is the sectional view of the A-A of Figure 12；
Figure 14 is the stair modular structure schematic diagram for being provided with hollow hole；
Figure 15 is the structural schematic diagram of closed-entry reinforcing steel bar connecting sleeve tube middle cylinder body；
Figure 16 is the end view of necking；
Figure 17 is the cooperation schematic diagram of sleeve and connection reinforcing bar；
Figure 18 is the connection relationship diagram of closed-entry reinforcing steel bar connecting sleeve tube and prefabricated components；
Figure 19 is the structural schematic diagram of split type cylinder；
Figure 20 is the connection relationship diagram of split type cylinder and prefabricated components；
Figure 21 is the structural schematic diagram for protruding into fastening piece type sleeve outside；
Figure 22 is to protrude into fastening piece type sleeve and the assembling schematic diagram for connecting reinforcing bar outside.
In figure, 1, stair module；11, reinforcing bar is connected；110, enlarged footing；12, deformed bar；14, bar frame；141,
Upper steel mesh；142, lower steel mesh；143, spacer bar net；15, hollow hole；16, U-shaped reinforcing bar；17, pre-buried angle bar；19, it connects
Steel plate；2, sleeve；3, half space plate；31, platform dowel；32, the first post-cast strip；4, end wall；41, it pours after second
Band；5, side wall；51, upper prefabricated panel；52, lower prefabricated panel；53, third post-cast strip；6, cylinder；61, necking；611, mistake
Cross circular conical surface；62, injected hole；63, connecting plate；631, through-hole；65, clamping block；651, blocked hole；66, elastic slice；7, prefabricated building
Plate.
Specific embodiment
The utility model is described in further detail with reference to embodiments.
A kind of precast stair, as shown in Figure 1, including stair module 1, the upper and lower ends of stair module 1 along its length point
It is not fixedly connected with reinforcing bar 11, the end that connection reinforcing bar 11 stretches out stair module 1 is provided with enlarged footing 110, the outer diameter of enlarged footing 110
Greater than the outer diameter of connection reinforcing bar 11.Connection reinforcing bar 11 is also possible to the pre-buried setting in part in stair module 1, can also be such as Fig. 2
It is shown, connect the elongated setting in stair module 1 of reinforcing bar 11.
As shown in figure 3, precast stair further includes half space plate 3, the side opposite with stair module 1 of half space plate 3
Enlarged footing 110,110 outer diameter of enlarged footing is arranged in fixed platform dowel 31, the end that platform dowel 31 stretches out half space plate 3
Greater than 31 outer diameter of platform dowel.Platform dowel 31 uses sleeve 2 to be connected with reinforcing bar 11 is connect, and opens up and expands on sleeve 2
First 110 matched mounting hole (structure of sleeve 2 and the last paragraph of specific connection type are introduced).Stair module 1 and rest
First post-cast strip 32 is set between platform board 3.
Work progress is as follows: first installing in place by stair module 1 and half space plate 3 and carries out temporary support, by sleeve 2
It is set on the enlarged footing 110 of platform dowel 31 and connection reinforcing bar 11；Pour 32 concrete of the first post-cast strip, concrete slurry
Sleeve 2 can be flowed into and be full of from the opening at 2 both ends of sleeve, and stair module 1 is realized after concrete slurry solidification and rest is flat
The connection of platen 3.
Since the installation of sleeve 2 is more convenient compared to welding, so improving the construction efficiency of entire stair, and the company
It connects compared to overlap joint or is bolted stronger, shock resistance is more preferable.
When installation, stair module 1 and half space plate 3 are required to carry out temporary support, in order to reinforce between the two face
When connect, as shown in figure 4, built-in fitting is arranged in stair module 1 and the end interconnected of half space plate 3.Built-in fitting can be
Pre-embedded steel slab, pre-buried angle bar 17 or built-in bolt sleeve.When installation, the two is connected with junction steel plate 19.Junction steel plate 19 can
To be welded with pre-buried angle bar 17, can also be connected by screw bolts.
Embodiment two:
The side of existing stair in the width direction is generally to abut with metope, is not connected effectively.The embodiment introduction
A kind of connection structure of precast stair can be realized effective connection of stair module 1 Yu side and wall, improve stair and wall
Globality.Along the pre-buried dowel at least one side of its width direction, dowel can be with enlarged footing stair module 1
110 straight muscle, is also possible to U-shaped reinforcing bar 16 as shown in Figure 5, and the open end of U-shaped reinforcing bar 16 is pre-buried in stair module 1.Such as
Shown in Fig. 6 and Fig. 7, side wall 5 is prefabricated panel comprising upper prefabricated panel 51 and lower prefabricated panel 52 are set therebetween
Third post-cast strip 53 is set, U-shaped reinforcing bar 16 protrudes into third post-cast strip 53.Third reinforcing mat, third are set in third post-cast strip 53
Reinforcing mat includes several elongated reinforcing bars, and elongated reinforcing bar periphery hoop sets several stirrups.Preferably, elongated reinforcing bar penetrates U-shaped reinforcing bar 16
It is interior.
Work progress is as follows: lower prefabricated panel 52 being installed and is fixed；Stair module 1 is installed, U-shaped reinforcing bar 16 is made to protrude into third
In post-cast strip 53；Third reinforcing mat is installed, and installation is used to support upper prefabricated panel 51 in the upper surface of lower prefabricated panel 52
Supporting element (can be short I-steel etc., be not drawn into figure)；Install prefabricated panel 51；Pour third post-cast strip 53.
Since dowel protrudes into third post-cast strip 53, after third post-cast strip 53 pours solidification, by side wall 5 and prefabricated building
Ladder connection is integral.The structure realizes that only both ends are fixedly connected by precast stair in the prior art, becomes three directions
Connection, to substantially increase the integrally-built shock resistance of building.
In order to facilitate pouring for third post-cast strip 53, vertical hollow hole can be set in upper prefabricated panel 51 as concrete
Pour channel.
As shown in figure 8, when stair do not turn round stair, when vertical ladder, U-shaped steel is respectively provided in the two sides of stair module 1
Muscle 16 makes stair and the wall of two sides be respectively formed connection.
In addition, half space plate 3 is also referred to the program in the pre-buried U-shaped reinforcing bar 16 in side end face, with wall connecting.
Embodiment three:
The difference is that, as shown in figure 9, half space plate 3 and stair module 1 are integrally formed, connected with embodiment one
Reinforcing bar 11 penetrates through half space plate 3, and stretches out from the side of half space plate 3.The enlarged footing 110 of connection reinforcing bar 11 protrudes into end
In wall 4, the second post-cast strip 41 is reserved at the position that end wall 4 is connect with precast stair.
The setting of enlarged footing 110 can be effectively prevented connection reinforcing bar 11 and extract from the second post-cast strip 41, to improve building
The reliability of ladder and wall connecting.In order to further increase the reliability of connection, second reinforcing mat is set in the second post-cast strip 41,
Second reinforcing mat includes several elongated reinforcing bars, and elongated reinforcing bar periphery hoop sets several stirrups.Enlarged footing 110 protrudes into the second reinforcing mat
In range, since stirrup is to the package action of concrete on its interior, so that the part concrete is less susceptible to loosely
It destroys, enlarged footing 110 is wrapped up more solid by concrete, therefore shock resistance is also further enhanced.
Further, with reference to Fig. 9, positioned at the wall other side precast floor slab 7 can also be pre-buried with enlarged footing 110
Reinforcing bar, after enlarged footing 110 protrudes into the second post-cast strip 41, with sleeve 2 by the expansion of the enlarged footing 110 of precast floor slab 7 and precast stair
Major part 110 is attached and (is not drawn into sleeve in figure).
The connecting node of half space plate 3 and end wall 4 is readily applicable to stopping in embodiment one in the embodiment
Cease platform board 3.
Example IV:
It as shown in Figure 10, can be in stair module 1 along length in order to increase the anti-bending strength of precast stair length direction
The pre-buried deformed bar 12 in direction.Deformed bar 12 only can be arranged one layer in the bottom of stair module 1, can also be such as Figure 11
It is shown, it is arranged to bilayer.
Further, as shown in Figure 10, enlarged footing 110 is arranged in the end that deformed bar 12 stretches out stair module 1, expands
First 110 outer diameter is greater than the outer diameter of deformed bar 12.The deformed bar 12 for being provided with enlarged footing 110 can equally use sleeve
2 are attached with the reinforcing bar sleeve 2 of peripheral member.To preferably improve the globality of structure.
As shown in Figure 12 and Figure 13, in order to improve the overall stiffness of stair module 1,1 inside embedded bar net of stair module
Frame 14.Bar frame 14 includes the lower steel mesh 142 that upper steel mesh 141 and upper steel mesh 141 are oppositely arranged in parallel, upper reinforcing bar
Spacer bar net 143 is connected between net 141 and lower steel mesh 142.Spacer bar net 143 is multiple tracks purlin arranged in parallel
The extending direction of frame, truss is identical as stair length direction.Per pass truss be continuous three-legged structure reinforced mesh, top with
Upper steel mesh 141 welds, and bottom and lower steel mesh 142 weld.Due to bar frame 14 itself rod piece be welded to each other form it is whole
The frame structure of body, conventional arrangement of reinforcement, has good bending resistance, compressive property, so used by it compared to the prior art
Reinforcing bar can be the minor diameter reinforcing bar that diameter is 4mm ~ 6mm, so as to mitigate certainly while enhancing precast stair intensity
Weight saves material.
In order to mitigate the own wt of stair, as shown in figure 14, if perforation setting along its length inside stair module 1
Dry hollow hole 15.
Tube-in-tube structure and attaching method thereof is introduced:
Sleeve 2 can protrude into fastening piece type sleeve using closed-entry reinforcing steel bar connecting sleeve tube and outside.
Closed-entry reinforcing steel bar connecting sleeve tube:
As shown in figure 15, closed-entry reinforcing steel bar connecting sleeve tube includes cylinder 6 and the necking 61 for being integrally connected to 6 both ends of cylinder
(necking 61 be the above mounting hole) offers several equally distributed injected holes 62 on cylinder 6, is convenient for cement slurry stream
Enter inside cylinder 6；In conjunction with Figure 16, necking 61 is round mouth, and 61 inner wall of necking is conical surface-shaped, and the biggish one end of circular conical surface is towards cylinder
The inside of body 6；In conjunction with Figure 17, the connection structure of closed-entry reinforcing steel bar connecting sleeve tube is made of connection reinforcing bar 11 and cylinder 6, connects steel
11 one end of muscle is pre-buried to be fixedly connected on inside prefabricated components, and the other end is exposed at outside prefabricated components and in one far from prefabricated components
End end is connected with enlarged footing 110, and the outer wall radial dimension of enlarged footing 110 is greater than the outer wall radial dimension of connection reinforcing bar 11
And it is less than the inner wall radial dimension of necking 61, enlarged footing 110 can protrude into inside cylinder 6 from necking 61.
As shown in figure 18, cement slurry from the necking 61 at injected hole 62 and both ends flow into the inside of cylinder 6 and solidifying to be formed it is mixed
After solidifying soil, enlarged footing 110 can be fixed on inside cylinder 6, can limit the connection reinforcing bar 11 at 6 both ends of cylinder towards mutually far
From direction movement extract cylinder 6 and so that the prefabricated components to both ends are attached improve the connection between two prefabricated components
Intensity.(it is stair module 1, half space plate 3 or pre- that rectangular block shape structure of the reinforcing bar 11 far from 6 one end of cylinder is connected in Figure 18
The schematic diagram of floor 7 processed, when being interpreted as half space plate 3, corresponding reinforcing bar, that is, platform dowel 31).
Enlarged footing 110 is rotary table planar close to one end of connection reinforcing bar 11, and enlarged footing 110 is small close to one end of prefabricated board 7
In the other end；For convenient for narration, the circular conical surface of necking 61 is defined as transition circular conical surface 611, lead between 6 end of necking 61 and cylinder
611 integrally connected of transition circular conical surface, after connection reinforcing bar 11 is by the active force for extracting 6 direction of cylinder, round table surface is squeezed mixed
Solidifying soil, concrete by squeezing action power (in such as Figure 18 the direction of F arrow meaning for force direction schematic diagram) passed to
Circular conical surface 611 is crossed, the reaction force that transition circular conical surface 611 generates has component radially to enlarged footing 110, radially compresses
Enlarged footing 110, therefore, transition circular conical surface 611 can make cylinder 6 and internal concrete carry bigger load, improve connection
Bonding strength between reinforcing bar 11 and enlarged footing 110 and cylinder 6.
For the sleeve in casting concrete, concrete slurry enters the connection that cylinder 6 completes connection reinforcing bar 11, compared to weldering
It connects, does not need individual welding machine, easy to operate, save the cost.Further, since the program is depended on pressure transmitting, it is connected as flexibility
Connection, compared to welding, which has certain activity space, more difficult destruction under geological process, so shock resistance is more
It is good.
The shape of necking 61 can be circle, be also possible to the various shapes such as rectangular, strip and ellipse, enlarged footing
110 section is adapted with the shape of necking 61.In order to make the pressure of enlarged footing 110 effectively be transferred to cylinder 6 by concrete
On, the size of necking 61 is 1 ~ 5mm bigger than the size of enlarged footing 110, preferably 2 ~ 3mm.
As illustrated in figures 19 and 20, cylinder 6 has separate structure, can be split as two halves along axial direction.Two halves cylinder 6 is mutual
Close one end outer surface is fixedly connected to connecting plate 63, and through-hole 631,6 phase of two halves cylinder are offered on connecting plate 63
Mutually docking split after, the through-hole 631 on connecting plate 63 can be mutually aligned, can by will sell or the pin members such as bolt simultaneously insertion two
In a through-hole 631 being mutually aligned, pin joint is carried out to two connecting plates 63, limits two halves cylinder 6 towards the direction phase being located remotely from each other
Mutually separation.
When the distance between two prefabricated components are smaller, with reference to Fig. 3, such as the narrower width of the first post-cast strip 31
When, connection the distance between reinforcing bar 11 and 31 end face of platform dowel is also smaller, cylinder 6 can be split as two halves, first will
Wherein half cylinder 6 is nested on one of connection reinforcing bar 11, then the other half cylinder 6 is socketed on connection reinforcing bar 11, most
It slides afterwards along the axial direction of connection reinforcing bar 11 and by two halves cylinder 6 towards direction close to each other, makes the through-hole 631 on connecting plate 63
It is mutually aligned, being inserted into through-hole 631 by pin member stitches and fastens two halves cylinder 6.Split type sleeve is facilitated in narrow ring
Fast Installation sleeve under border.
Protrude into fastening piece type sleeve outside:
As shown in Figure 21 and Figure 22, protruding into fastening piece type sleeve outside includes cylinder 6, clamping block 65, elastic slice 66, and the two of cylinder 6
End offers the blocked hole 651 for 65 grafting of clamping block, offers injected hole 62 on cylinder 6.66 one end of elastic slice and cylinder 6
Lateral surface is mutually fixedly connected, and the other end of elastic slice 66 is mutually fixedly connected with one end that clamping block 65 is located at 6 outside of cylinder.
Connection 11 one end of reinforcing bar is fixedly connected with enlarged footing 110, and the radial dimension of enlarged footing 110 is greater than connection reinforcing bar 11
Radial dimension, enlarged footing 110 can be inserted into inside cylinder 6 from the port of cylinder 6.In insertion process, enlarged footing 110 pushes clamping block
65 towards far from 6 central axis of cylinder direction move when band spring plate 66 occur flexible deformation, cross clamping block in enlarged footing 110
After 65, elastic slice 66 is gradually recovered deformation insertion cylinder 6 and resets, and limitation enlarged footing 110 extracts cylinder 6.
When post-cast strip casting concrete around cylinder 6, cement slurry can be flowed into from the two-port and injected hole 62 of cylinder 6
Inside cylinder 6, solid concrete is formed after cement slurry sets, is fixed on connection reinforcing bar 11 inside cylinder 6, to realize two
The connection of root connection reinforcing bar 11.
In addition it should be pointed out that 4 sleeve correlations that sleeve can be submitted using the applicant on April 8th, 2018
Utility model patent, application number is respectively 201810306670.4,201810307419.X, 201810307420.2 and
201810307967.2。
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (15)
1. a kind of connection structure of precast stair, it is characterised in that: including stair module (1) and side wall (5)；Stair module
(1) upper and lower ends along its length are respectively fixedly connected with reinforcing bar (11), and the end of stair module (1) is stretched out in connection reinforcing bar (11)
It is provided with enlarged footing (110), the outer diameter of enlarged footing (110) is greater than the outer diameter of connection reinforcing bar (11)；
Side wall (5) includes upper prefabricated panel (51) and lower prefabricated panel (52), and third post-cast strip (53) are arranged therebetween；
For stair module (1) along the pre-buried dowel at least one side of its width direction, dowel protrudes into third post-cast strip (53)
Stair module (1) is connected by inside, third post-cast strip (53) with side wall (5)；
The vertical hollow hole in third post-cast strip (53) concreting channel is provided as in upper prefabricated panel (51).
2. the connection structure of precast stair according to claim 1, it is characterised in that: dowel is pre-buried U-shaped reinforcing bar
(16), the open end of U-shaped reinforcing bar (16) is pre-buried interior to stair module (1).
3. the connection structure of precast stair according to claim 1, it is characterised in that: setting the in third post-cast strip (53)
Three reinforcing mats, third reinforcing mat include several elongated reinforcing bars, and elongated reinforcing bar periphery hoop sets several stirrups.
4. the connection structure of precast stair according to claim 1, it is characterised in that: connection reinforcing bar (11) is in stair module
(1) elongated setting or the pre-buried setting in part in.
5. the connection structure of precast stair according to claim 1, it is characterised in that: along length side in stair module (1)
To pre-buried deformed bar (12).
6. the connection structure of precast stair according to claim 5, it is characterised in that: deformed bar (12) stretches out stair
Enlarged footing (110) are arranged in the end of module (1), and the outer diameter of enlarged footing (110) is greater than the outer diameter of deformed bar (12).
7. the connection structure of precast stair according to claim 1, it is characterised in that: the internal pre-buried steel of stair module (1)
Muscle rack (14).
8. the connection structure of precast stair according to claim 7, it is characterised in that: bar frame (14) includes upper reinforcing bar
Net (141), the lower steel mesh (142) being oppositely arranged in parallel with upper steel mesh (141), upper steel mesh (141) and lower steel mesh
(142) spacer bar net (143) are connected between.
9. the connection structure of precast stair according to claim 1, it is characterised in that: stair module (1) is internal along its length
It spends direction perforation and several hollow holes (15) is set.
10. the connection structure of precast stair according to claim 1, it is characterised in that: stair module (1) is square along its length
To upper and lower end parts be arranged built-in fitting.
11. the connection structure of precast stair according to claim 10, it is characterised in that: built-in fitting includes pre-embedded steel slab
And/or pre-buried angle bar (17) and/or built-in bolt sleeve.
12. the connection structure of precast stair according to claim 1, it is characterised in that: it further include half space plate (3),
The half space plate (3) is located at the end of stair module (1)；Half space plate (3) and stair module (1) are integrally formed, even
Reinforcing bar (11) perforation half space plate (3) is connect, and is stretched out from the end face of half space plate (3).
13. the connection structure of precast stair according to claim 12, it is characterised in that: further include end wall (4), in advance
The upper and lower end of stair processed along its length at least one end is connect with end wall (4), end wall (4) with it is prefabricated
The second post-cast strip (41) are reserved at the position of stair connection；It is internal that enlarged footing (110) protrudes into the second post-cast strip (41).
14. the connection structure of precast stair according to claim 13, it is characterised in that: setting in the second post-cast strip (41)
Second reinforcing mat, the second reinforcing mat include several elongated reinforcing bars, and elongated reinforcing bar periphery hoop sets several stirrups.
15. the connection structure of precast stair according to claim 1, it is characterised in that: further include half space plate (3)；
Half space plate (3) and stair module (1) opposite side fixed platform dowel (31), platform dowel (31) stretch out rest
Enlarged footing (110) are arranged in the end of platform board (3), and enlarged footing (110) outer diameter is greater than platform dowel (31) outer diameter, platform connection
Muscle (31) with connect reinforcing bar (11) using sleeve (2) be connected, opened up on sleeve (2) with enlarged footing (110) matched mounting hole；Building
The first post-cast strip (32) are set between terraced module (1) and half space plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821169588.3U CN209585463U (en) | 2018-07-23 | 2018-07-23 | A kind of connection structure of precast stair |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424900A (en) * | 2020-03-30 | 2020-07-17 | 西安长庆科技工程有限责任公司 | Steel structure beam type sliding stair and construction method |
| CN112982852A (en) * | 2021-02-26 | 2021-06-18 | 全学友 | Steel-concrete combined assembled stair section |
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2018
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424900A (en) * | 2020-03-30 | 2020-07-17 | 西安长庆科技工程有限责任公司 | Steel structure beam type sliding stair and construction method |
| CN111424900B (en) * | 2020-03-30 | 2021-11-12 | 西安长庆科技工程有限责任公司 | Steel structure beam type sliding stair and construction method |
| CN112982852A (en) * | 2021-02-26 | 2021-06-18 | 全学友 | Steel-concrete combined assembled stair section |
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