CN206844714U - Pre-stress floor post-cast strip stretching end support member - Google Patents
Pre-stress floor post-cast strip stretching end support member Download PDFInfo
- Publication number
- CN206844714U CN206844714U CN201720770480.9U CN201720770480U CN206844714U CN 206844714 U CN206844714 U CN 206844714U CN 201720770480 U CN201720770480 U CN 201720770480U CN 206844714 U CN206844714 U CN 206844714U
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- cast strip
- post
- plate
- stretching end
- bottom plate
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Abstract
The utility model discloses pre-stress floor post-cast strip stretching end support member, including bottom plate and steel wire, two upper plates, nose section is provided with the bottom of upper plate, neck is provided with bottom plate upper surface, multiple grooves are had in the upper surface of the lower surface of upper plate and bottom plate, and it is respectively equipped with semicircle opening in the both sides of groove, semicircle opening on upper plate is mutually correspondingly formed a circular clamping zone with the semicircle opening on bottom plate, slided in groove and be provided with fixture block, the spring being connected with fixture block is installed in bottom portion of groove.Support component is set at the stretching end of post-cast strip, fixed supporting role can not only be played to presstressed reinforcing steel, concrete at the stretching end of post-cast strip can also be insulated, to reduce the spill-out of concrete, and then ensure the concrete density in the region, prevent that the concrete parts in the region in tension of prestressed tendon are chipping simultaneously, it is ensured that the overall cracking resistance of floor.
Description
Technical field
It the utility model is related to the realm of building construction, and in particular to pre-stress floor post-cast strip stretching end support member.
Background technology
Common contignation is easily ftractureed, especially structure of the length more than 100 meters, and distress in concrete can not almost be kept away
Exempt from.And prestressed structure can produce an axle compression after prestressing force is applied to structure, its value is about in 10-18kg/
Cm2 or so, prestressed slab will ftracture, it is necessary to overcome compressive pre-stress first, after compressive pre-stress is overcome, also to overcome concrete
Tensile strength could ftracture, so the cracking resistance of prestressed structure is excellent, be especially suitable for the cracking resistance for solving the problems, such as super-long structural.
Prestressed structure has quite superior elastic recovery properties, if normal reinforced concrete beam plate is due to the excessive generation of external load
Crack, crack will not close because external load disappears, even if if restressed beam slab produces crack, once external load disappears
Lose, crack can close.
In pre-stress floor work progress, after-pouring band can be reserved on the steel bar framework of floor, is existed with convenient-laying
Deformed bar carries out stretching and drawing process at post-cast strip in reinforcing steel bar frame.However, when being poured, as shown in figure 4, rear
Pour at the stretching end of band, after floor bar framework carries out concreting, part concrete can connect along presstressed reinforcing steel and post-cast strip
The part connect is overflowed, i.e., numerous irregular burs are formed in post-cast strip, not only have impact on the coagulation at the stretching end of post-cast strip
Soil compactness, and can also reduce when presstressed reinforcing steel stretches the drawing effect of presstressed reinforcing steel.
Utility model content
The utility model purpose is to provide pre-stress floor post-cast strip stretching end support member, to solve the above problems.
The utility model is achieved through the following technical solutions：
Pre-stress floor post-cast strip stretching end support member, including bottom plate and the steel that is covered on the stretching end end face of post-cast strip
Silk screen, in addition to two upper plates, nose section is provided with the bottom of the upper plate, is provided with the bottom plate upper surface and matches somebody with somebody with nose section
The neck of conjunction, and multiple grooves are had in the upper surface of the lower surface of the upper plate and bottom plate, and in the both sides of groove
It is respectively equipped with and is opened with its internal semicircle opening connected, the semicircle opening on upper plate with the semicircle on bottom plate
Mouth is mutually correspondingly formed a circular clamping zone, is slided in the groove and is provided with fixture block, is provided with bottom portion of groove
Spring, and spring is connected with the fixture block, the end of two fixture blocks in the next clamping zone of original state contacts with each other；
When being supported to post-cast strip stretching end end face, presstressed reinforcing steel runs through the clamping zone, and the cylindrical wall of presstressed reinforcing steel is by two
Clamped by the individual fixture block.For in the prior art, after steel bar framework casting concrete, post-cast strip stretching end end face upper part
Concrete can overflow along the region where presstressed reinforcing steel, can not only reduce the concrete density of post-cast strip stretching end, can also be
Numerous irregular projections are formed on the stretching end end face of post-cast strip, and then are caused in tension of prestressed tendon at the stretching end of post-cast strip
Concrete easily occur broken, and the tensioning that numerous irregular projections can also be to presstressed reinforcing steel forms interference, while to pre-
Stress rib forms abrasion, reduces the overall cracking resistance of pre-stress floor；On the other hand, poured to steel bar framework, applicant
Support component is set at the stretching end of post-cast strip, fixed supporting role can not only be played to presstressed reinforcing steel, moreover it is possible to post-cast strip
Concrete packing at stretching end, to reduce the spill-out of concrete, and then ensures the concrete density in the region, prevents simultaneously
Only in tension of prestressed tendon, the concrete parts in the region are chipping, it is ensured that the overall cracking resistance of floor.
When specifically used, post-cast strip stretching end end face is covered comprehensively first by bar-mat reinforcement, and presstressed reinforcing steel according to
It is secondary to be entered to after steel bar framework, steel wire in post-cast strip, and two upper plates, bottom plate are by being spliced to form post-cast strip stretching end
Bottom plate, i.e., be placed in the lower section of presstressed reinforcing steel by the packing support member of end face first, and ensures then presstressed reinforcing steel is placed in groove
By in the nose section insertion neck on two upper plate lower surfaces, i.e. two upper plates form an entirety, and prestressing force with bottom plate
Muscle is located in circular clamp region, and now in same clamping zone, the fixture block positioned at upper plate lower end is with being located on bottom plate
Respectively to the wall contacts of presstressed reinforcing steel upper and lower ends, the spring in groove is compressed fixture block, is produced in spring-return deformation
Elastic force effect it is lower cause fixture block to keep certain extruding force to presstressed reinforcing steel, then using steel wire by bottom plate and two upper plates
It is fixed on the reinforcing bar at post-cast strip so that presstressed reinforcing steel is thoroughly fixed, and when the casting concrete into steel bar framework, in advance should
The position of power muscle keeps constant, and concrete progress first spacing stop of the steel wire to post-cast strip stretching end end, and bottom
The madial wall of plate and two upper plates carries out secondary spacing stop to concrete, and in most of area quilt in circular clamp region
Presstressed reinforcing steel and fixture block are insulated so that the concrete spill-out in post-cast strip stretching end end greatly reduces, Wu Fa
Post-cast strip stretching end forms substantial amounts of projection, ensure that the concrete density in the region, avoid in tension of prestressed tendon and
Trigger the concrete disintegrating at stretching end, to ensure the cracking resistance of pre-stress floor.Further, due to bottom plate and with
Corresponding to upper plate be provided with multiple grooves, and in an initial condition, semicircle be open at groove both ends is sealed by fixture block, i.e.,
Under the execution conditions that presstressed reinforcing steel quantity differs, the support component in the technical program can realize reuse, and can be true
Protect when the quantity of presstressed reinforcing steel is less than the quantity of groove, the concrete of post-cast strip stretching end end will not be open along semicircle
Overflow, to improve the use range of the technical program.
The deep-slotted chip breaker to match with presstressed reinforcing steel outer wall is provided with one end end face of the fixture block away from the spring.
The deep-slotted chip breaker to match with presstressed reinforcing steel outer wall is opened up on fixture block end face so that the point between fixture block and presstressed reinforcing steel contacts conversion
Contacted for face, further reduce the gap that steel bar framework inner concrete outwards overflows, while fixture block corresponding to raising two mutually
To the limit effect of presstressed reinforcing steel, the concrete to prevent pouring forms impact to presstressed reinforcing steel and causes presstressed reinforcing steel that position occurs
Skew.
Along the radial direction of the presstressed reinforcing steel, the length of the upper plate is the half of the length of the bottom plate.As excellent
Choosing, after two upper plate splicings are on the bottom plate so that packing part at the stretching end of post-cast strip is in the rectangular configuration of a standard, side
Just the Fast Installation of bottom plate and two upper plates is dismantled.
It is rectangular channel in the groove.Preferably, groove is rectangular channel, and the shape of corresponding fixture block also with groove phase
Matching so that semicircular opening can be fully sealed for fixture block, in the post-cast strip to presstressed reinforcing steel negligible amounts, can enter one
Step reduces the amount of concrete overflowed on the bottom plate and upper plate lateral wall reused.
Also include elasticity packing plate, it is described packing plate positioned at steel wire and bottom plate between, and packing plate on be provided with and
The through hole that presstressed reinforcing steel matches.When being insulated to post-cast strip stretching end end face, what bottom plate and two upper plates were formed
Support member madial wall directly enters row constraint with steel wire, concrete, however support member madial wall and the plane where steel wire without
Method ensures fitting completely so that concrete can be filled gap between support member madial wall and steel wire, that is, be formed multiple big
The small jut to differ or depression, so that the compactness at the stretching end of post-cast strip is reduced, and applicant is in steel wire and branch
Packing plate is set, and the packing plate possesses certain elasticity so that packing plate can be produced when support member is fixed between support member
Certain extruding so that packing plate madial wall and steel wire where plane between realize it is levelling, that is, insulate plate and steel wire it is complete
Full fitting, to avoid forming gap between support member and steel wire；And the packing plate after being bonded with steel wire can avoid
Moisture in concrete at stretching end overflows, and ensures that the proportioning of fixed part and liquid portion is protected in the concrete in the region
It is fixed to keep steady, and prevents from causing to rupture because of the concrete density in region deficiency in tension of prestressed tendon.
The packing plate is rubber-plastic sponge plate.Preferably, packing plate uses rubber-plastic sponge plate, using rubber-plastic sponge plate certainly
Body outstanding toughness and water resistance, it is ensured that post-cast strip stretching end end concrete will not overflow before dry and hard, protect simultaneously
Card will not enough produce numerous projection or depression concrete is dry and hard.
The utility model compared with prior art, has the following advantages and advantages：
1st, the utility model pre-stress floor post-cast strip stretching end support member, support group is set at the stretching end of post-cast strip
Part, fixed supporting role can not only be played to presstressed reinforcing steel, moreover it is possible to the concrete at the stretching end of post-cast strip is insulated, to reduce
The spill-out of concrete, and then ensure the concrete density in the region, while prevent the region in tension of prestressed tendon
Concrete parts are chipping, it is ensured that the overall cracking resistance of floor；
2nd, the utility model pre-stress floor post-cast strip stretching end support member, due in bottom plate and corresponding upper plate
Multiple grooves are provided with, and in an initial condition, the semicircle opening at groove both ends is sealed by fixture block, i.e., in presstressed reinforcing steel number
Measure under the execution conditions to differ, the support component in the technical program can realize reuse, and be able to ensure that in presstressed reinforcing steel
Quantity when being less than the quantity of groove, the concrete of post-cast strip stretching end end will not overflow along semicircle opening, to improve
The use range of the technical program；
3rd, the utility model pre-stress floor post-cast strip stretching end support member, the packing plate after being bonded with steel wire can be kept away
The moisture exempted from the concrete at stretching end overflows, and ensures the proportioning of fixed part and liquid portion in the concrete in the region
Keep stable, prevent from causing to rupture because of the concrete density in region deficiency in tension of prestressed tendon.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, the restriction to the utility model embodiment is not formed.In the accompanying drawings：
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the profile of support member；
Fig. 3 is the front view of support member；
Fig. 4 is the structural representation of post-cast strip.
Mark and corresponding parts title in accompanying drawing：
1- concrete, 2- steel wires, 3- packings plate, 4- upper plates, 5- bottom plates, 6- presstressed reinforcing steels, 7- post-cast strips, 8- are protruded
Section, the semicircle opening of 9- grooves, 10- springs, 11- fixture blocks, 12-.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, it is not intended as to restriction of the present utility model.
Embodiment 1
As shown in Figures 1 to 3, the present embodiment includes bottom plate 5 and the steel wire 2 being covered on the stretching end end face of post-cast strip 7,
Also include two upper plates 4, be provided with nose section 8 in the bottom of the upper plate 4, be provided with the upper surface of bottom plate 5 and match somebody with somebody with nose section 8
The neck of conjunction, and multiple grooves 9 are had in the upper surface of the lower surface of the upper plate 4 and bottom plate 5, and in groove 9
Both sides are respectively equipped with is open 12 with being located on bottom plate 5 with its internal semicircle opening 12 connected, the semicircle on upper plate 4
Semicircle opening 12 be mutually correspondingly formed a circular clamping zone, slided in the groove 9 and be provided with fixture block 11,
The bottom of groove 9 is provided with spring 10, and spring 10 is connected with the fixture block 11, two in the next clamping zone of original state
The end of fixture block 11 contacts with each other；When being supported to the stretching end end face of post-cast strip 7, presstressed reinforcing steel 6 runs through the clamp area
Domain, and the cylindrical wall of presstressed reinforcing steel 6 is clamped by two fixture blocks 11.
In use, the stretching end end face of post-cast strip 7 is covered comprehensively first by bar-mat reinforcement, and presstressed reinforcing steel 6 is successively
Entered to after steel bar framework, steel wire 2 in post-cast strip 7, and two upper plates 4, bottom plate 5 are opened by being spliced to form post-cast strip 7
Bottom plate 5, i.e., be placed in the lower section of presstressed reinforcing steel 6 by the packing support member of pull end end face first, and it is recessed to ensure that presstressed reinforcing steel 6 is placed in
Then groove 9 inserts the nose section 8 on two lower surfaces of upper plate 4 in neck, i.e. two upper plates 4 form an entirety with bottom plate 5,
And presstressed reinforcing steel 6 is located in circular clamp region, now in same clamping zone, the fixture block 11 positioned at the lower end of upper plate 4
With the fixture block 11 on bottom plate 5 respectively to the wall contacts of the upper and lower ends of presstressed reinforcing steel 6, the spring 10 in groove 9 is compressed,
Fixture block 11 is caused to keep certain extruding force to presstressed reinforcing steel 6 in the case where spring 10 replys elastic force effect caused by deformation, then
Bottom plate 5 and two upper plates 4 are fixed on the reinforcing bar at post-cast strip 7 using steel wire so that presstressed reinforcing steel 6 is thoroughly fixed,
When the casting concrete 1 into steel bar framework, the position of presstressed reinforcing steel 6 keeps constant, and steel wire 2 is to the stretching end of post-cast strip 7
The concrete 1 of end carries out first spacing stop, and the madial wall of bottom plate 5 and two upper plates 4 concrete 1 is carried out it is secondary
Spacing stop, and most of area in circular clamp region is insulated by presstressed reinforcing steel 6 and fixture block 11 so that in post-cast strip
The spill-out of concrete 1 of 7 stretching end ends greatly reduces, and can not form substantial amounts of projection in the stretching end of post-cast strip 7, ensure that
The compactness of concrete 1 in the region, avoid triggering the concrete 1 at stretching end broken in 6 tensioning of presstressed reinforcing steel, to ensure
The cracking resistance of pre-stress floor.
Further, due to being provided with multiple grooves 9 on bottom plate 5 and corresponding upper plate 4, and in original state
Under, the semicircle opening 12 at the both ends of groove 9 is sealed by fixture block 11, i.e., under the execution conditions that the quantity of presstressed reinforcing steel 6 differs, this
Support component in technical scheme can realize reuse, and be able to ensure that the quantity in presstressed reinforcing steel 6 is less than the quantity of groove 9
When, the concrete 1 of the stretching end end of post-cast strip 7 will not overflow along semicircle opening 12, to improve the use of the technical program
Scope.
In the present embodiment, it is provided with one end end face of the fixture block 11 away from the spring 10 and the outer wall of presstressed reinforcing steel 6
The deep-slotted chip breaker to match.The deep-slotted chip breaker to match with the outer wall of presstressed reinforcing steel 6 is opened up on the end face of fixture block 11 so that fixture block 11 with it is pre-
Point contact between stress rib 6 is converted to face contact, further reduces the gap that steel bar framework inner concrete 1 outwards overflows, together
Shi Tigao two mutually corresponding to fixture block 11 to the limit effect of presstressed reinforcing steel 6, to prevent the concrete 1 that pours to presstressed reinforcing steel 6
Form impact and cause presstressed reinforcing steel 6 that position skew occurs.
Preferably, two upper plates 4 make it that the packing part at the stretching end of post-cast strip 7 is in one after splicing on bottom plate 5
The rectangular configuration of standard, it is convenient that the Fast Installation of bottom plate 5 and two upper plates 4 is dismantled.
Preferably, groove 9 is rectangular channel, and the shape of corresponding fixture block 11 also matches with groove 9 so that fixture block 11
Semicircular opening can be fully sealed, in the post-cast strip 7 to the negligible amounts of presstressed reinforcing steel 6, can further reduce repetition
The amount of concrete 1 overflowed on the bottom plate 5 and the lateral wall of upper plate 4 used.
Embodiment 2
As shown in figure 1, the present embodiment on the basis of embodiment 1, includes the packing plate 3 of elasticity, the packing plate 3
Between steel wire 2 and bottom plate 5, and the through hole to match with presstressed reinforcing steel 6 is provided with packing plate 3.Opened to post-cast strip 7
When pull end end face is insulated, support member madial wall that bottom plate 5 and two upper plates 4 are formed directly with steel wire 2, concrete
1 enters row constraint, but support member madial wall can not ensure to be bonded completely with the plane where steel wire 2 so that concrete 1 can incite somebody to action
Gap is filled between support member madial wall and steel wire 2, that is, forms multiple juts not of uniform size or depression, so that
Compactness at the reduction stretching end of post-cast strip 7, and applicant sets packing plate 3, and the packing between steel wire and support member
Plate 3 possesses certain elasticity so that can produce certain extruding to packing plate 3 when support member is fixed so that the inner side of packing plate 3
Realize levelling between plane where wall and steel wire 2, that is, insulate plate 3 and be bonded completely with steel wire 2, to avoid in support member and
Gap is formed between steel wire 2；And the packing plate 3 after being bonded with steel wire 2 can be avoided in the concrete 1 at stretching end
Moisture overflows, and ensures that the proportioning of fixed part and liquid portion keeps stable in the concrete 1 in the region, prevents in prestressing force
Cause to rupture because of the compactness of concrete 1 in the region deficiency during 6 tensioning of muscle.
The packing plate 3 is rubber-plastic sponge plate.Preferably, packing plate 3 uses rubber-plastic sponge plate, rubber-plastic sponge plate is utilized
Itself outstanding toughness and water resistance, it is ensured that the stretching end end concrete 1 of post-cast strip 7 will not overflow before dry and hard, together
When ensure enough produce numerous projection or depression concrete 1 is dry and hard.
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, it is all within the spirit and principles of the utility model, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of the utility model.
Claims (6)
1. pre-stress floor post-cast strip stretching end support member, including bottom plate (5) and it is covered on the stretching end end face of post-cast strip
Steel wire (2), it is characterised in that：Also include two upper plates (4), nose section (8) is provided with the bottom of the upper plate (4), in institute
State bottom plate (5) upper surface and be provided with the neck coordinated with nose section (8), and in the lower surface of the upper plate (4) and bottom plate (5)
Upper surface has multiple grooves (9), and is respectively equipped with and its internal semicircle opening connected in the both sides of groove (9)
(12), the semicircle opening (12) on upper plate (4) is mutually correspondingly formed with the semicircle opening (12) on bottom plate (5)
One circular clamping zone, slided in the groove (9) and be provided with fixture block (11), spring is installed in groove (9) bottom
(10), and spring (10) is connected with the fixture block (11), the end of two fixture blocks (11) in the next clamping zone of original state
Portion contacts with each other；When being supported to post-cast strip (7) stretching end end face, presstressed reinforcing steel (6) runs through the clamping zone, and in advance
The cylindrical wall of stress rib (6) is clamped by two fixture blocks (11).
2. pre-stress floor post-cast strip stretching end support member according to claim 1, it is characterised in that：In the fixture block
(11) deep-slotted chip breaker to match with presstressed reinforcing steel (6) outer wall is provided with one end end face away from the spring (10).
3. pre-stress floor post-cast strip stretching end support member according to claim 1, it is characterised in that：Along the prestressing force
The radial direction of muscle (6), the length of the upper plate (4) are the half of the length of the bottom plate (5).
4. pre-stress floor post-cast strip stretching end support member according to claim 1, it is characterised in that：In the groove
(9) it is rectangular channel.
5. the pre-stress floor post-cast strip stretching end support member according to Claims 1 to 4 any one, it is characterised in that：
Also including the packing plate (3) of elasticity, the packing plate (3) is located between steel wire (2) and bottom plate (5), and on packing plate (3)
It is provided with the through hole to match with presstressed reinforcing steel (6).
6. pre-stress floor post-cast strip stretching end support member according to claim 5, it is characterised in that：The packing plate
(3) it is rubber-plastic sponge plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770480.9U CN206844714U (en) | 2017-06-28 | 2017-06-28 | Pre-stress floor post-cast strip stretching end support member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770480.9U CN206844714U (en) | 2017-06-28 | 2017-06-28 | Pre-stress floor post-cast strip stretching end support member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206844714U true CN206844714U (en) | 2018-01-05 |
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ID=60803043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720770480.9U Expired - Fee Related CN206844714U (en) | 2017-06-28 | 2017-06-28 | Pre-stress floor post-cast strip stretching end support member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206844714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119922A (en) * | 2017-06-28 | 2017-09-01 | 中国华西企业股份有限公司 | Support component for pre-stress floor post-cast strip stretching end |
-
2017
- 2017-06-28 CN CN201720770480.9U patent/CN206844714U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119922A (en) * | 2017-06-28 | 2017-09-01 | 中国华西企业股份有限公司 | Support component for pre-stress floor post-cast strip stretching end |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20190628 |