CN106012750A - Cement concrete pavement force transfer rod capable of realizing seam following bending - Google Patents
Cement concrete pavement force transfer rod capable of realizing seam following bending Download PDFInfo
- Publication number
- CN106012750A CN106012750A CN201610605299.2A CN201610605299A CN106012750A CN 106012750 A CN106012750 A CN 106012750A CN 201610605299 A CN201610605299 A CN 201610605299A CN 106012750 A CN106012750 A CN 106012750A
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- China
- Prior art keywords
- round steel
- power transmission
- transmission unit
- hollow round
- force transfer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/14—Dowel assembly ; Design or construction of reinforcements in the area of joints
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a cement concrete pavement force transfer rod capable of realizing seam following bending. The cement concrete pavement force transfer rod comprises a force transfer unit A and a force transfer unit B, wherein the force transfer unit A comprises round steel and a plain round bar A; an arc-shaped groove A is formed in the outer part of the round steel; the force transfer unit B comprises hollow round steel and a plain round steel bar B; a movable cavity matched with the outer part of the round steel is formed inside the hollow round steel; an arc-shaped groove B is formed in the inner cavity wall of the movable cavity of the hollow round steel; the round steel is arranged in the movable cavity of the hollow round steel in a matched way; the plain round steel bar A passes out from the position of a notch A of the hollow round steel; a connecting element comprises a rolling ball set and rolling balls arranged on the rolling ball set; the rolling balls of the connecting element are respectively arranged between the arc-shaped groove A of the force transfer unit A and the arc-shaped groove B of the force transfer unit B. The load transfer between plates can be met; the occurrence of certain tilting of plate blocks can also be tolerated; the problems of stress concentration and plate block cracking due to bending incapability of the conventional force transfer rod per se can be solved.
Description
Technical field
The present invention relates to field of road, particularly relate to a kind of can blind stitching bending cement concrete pavement
Dowel steel.
Background technology
Cement concrete pavement is to be formed, in order to make phase according to a definite sequence arrangement by separate plate
Adjacent plate cooperative bearing, conventional dowel steel (the usually aperture reinforcing bar of certain length) is by independent plate
It is connected with each other.When Vehicle Load is on one block of plate, load can be delivered to adjacent by dowel steel
On plate, it may be assumed that when vehicle acts on monolithic plate, by the performance of dowel steel effect, can be by adjacent
This vehicular load of plurality of plates shared.Engineering practice shows, the setting of dowel steel significantly reduces water
The faulting of slab ends disease on cement concrete road surface is (due to vehicular load and roadbed uneven support problem and connecing of being formed
There is the phenomenon of the discrepancy in elevation in seam both sides cement concrete slab).
In Practical Project, dowel steel mostly is about length 70cm, the light round steel of diameter 26mm to 32mm
Muscle.Owing to stiffness by itself is relatively big, while playing intermal force, also create other negative impacts.
As: cement concrete slab is under the effect of day and night temperature, it may occur that significantly warpage.When daytime heats up,
Cement concrete slab can occur downward warpage (panel of seam both sides becomes " people " type stood upside down)；Night
During cooling in evening, cement concrete slab can occur warpage upwards, and (panel of seam both sides becomes upright " people "
Type).Owing to dowel steel rigidity is relatively big, prevent the free warpage of concrete, therefore at concrete slab
Local produces bigger internal stress, even there will be serious stress concentration phenomenon, cause near seam or
The rod end position of dowel steel is cracking, causes the phenomenon of cement concrete road surface damage.
Therefore, dowel steel not only need to meet rigidity big, can be with the requirement of load, Er Qieyao between transmission plate
Avoid the problem of Cracking that the free warpage of plate causes.
Summary of the invention
The weak point existed for prior art, it is an object of the invention to provide one can blind stitching bending
Dowel bars into cement concrete pavement, utilize power transmission unit A and power transmission unit B mutually to be stung by connector
Close but traditional dowel steel can be replaced by device in relative rotation, and then achieve can lotus between transmission plate
Carry, avoid faulting of slab ends, plate warpage can be tolerated again, stop the purpose ftractureed.
The purpose of the present invention is achieved through the following technical solutions:
A kind of can blind stitching bending dowel bars into cement concrete pavement, including power transmission unit A and power transmission unit
B, described power transmission unit A are flexibly connected by connector between power transmission unit B；Described power transmission unit A
Including round steel and the plain bar A that is connected with round steel, if being provided with outside the round steel of described power transmission unit A
Dry arc groove A；Described power transmission unit B includes hollow round steel and the light circle being connected with hollow round steel
Reinforcing bar B, has and the movable cavity matched outside round steel inside the hollow round steel of described power transmission unit B,
The hollow round steel of described power transmission unit B has the breach A being connected with movable cavity, described hollow round steel
Movable cavity internal chamber wall be provided with several arc groove Bs corresponding with arc groove A, described biography
The round steel clearance fit of power unit A is installed in the hollow round steel movable cavity of power transmission unit B, described biography
The plain bar A of power unit A passes at the breach A of hollow round steel；Described connector includes ball sleeve
Part and the ball being installed in ball external member, described ball external member is provided with the breach A phase with hollow round steel
Corresponding breach B, the arc that the ball of described connector correspondence respectively is movably installed in power transmission unit A is recessed
Between the arc groove B of groove A and power transmission unit B.
In order to the present invention is better achieved, at the breach A of described power transmission unit B, it is provided with encirclement plain bar
Rubber blanket outside A.
Further technical scheme is: the round steel entirety of described power transmission unit A is rounded, and described arc is recessed
Groove A is uniformly arranged along the cylindrical wall of round steel；Described hollow round steel entirety is rounded, described hollow round steel
Movable cavity entirety rounded, described arc groove B is equal along the movable cavity inner round wall of hollow round steel
Even setting, and described arc groove B is equal with arc groove A quantity and one_to_one corresponding is arranged.
As preferably, the central angle corresponding to breach A of described hollow round steel is 8 °, described ball sleeve
Part entirety is rounded, and the central angle corresponding to breach B of ball external member is 8 °.
As preferably, a diameter of 28mm of a diameter of 32mm of described round steel, plain bar A, light is round
The a length of 270mm of reinforcing bar A, the section radius of described arc groove A is 5mm, arc groove A's
The degree of depth is 3mm；A diameter of 10mm of described ball.
The present invention compared with the prior art, has the following advantages and beneficial effect:
(1) the power transmission unit A and power transmission unit B of the present invention is mutually twisted by connector, power transmission list
Unit A can relatively rotate with power transmission unit B.Being mutually twisted structure load can be provided to transmit of dowel steel
Effect, when the mixed earth plate A of seam side is by Vehicle Load, can be effectively passed to connect
On the mixed earth plate B of seam opposite side.The dowel steel that can make seam both sides can be relatively rotated mix with cement
The warpage of solidifying dirt road panel bends, the cracking harm that reply warpage causes in a flexible manner.
(2) indentation, there of power transmission unit B of the present invention is surrounded outside plain bar A and is provided with rubber blanket,
When cement concrete slab generation warpage (either the tilting upward or to having a downwarp) of seam both sides, power transmission
The elasticity that unit A may utilize rubber blanket with power transmission unit B relatively rotates, and then makes dowel steel
Power transmission unit A rotates together with the warpage of concrete plate with power transmission unit B.Meanwhile, the construction stage
Rubber blanket can also stop cement mortar to enter inside dowel steel, the performance of protection dowel steel effect.The present invention
Load transmission can not only be met between plate, and can also tolerate that plate occurs certain warpage, solve because of
The problem that conventional dowel steel self can not bend and cause stress to concentrate, cause plate to ftracture.
(3) the plain bar A of the present invention, the length of plain bar B, spacing and towards all can be according to setting
Meter requirement presets, and then fits together, and seam installs one can the dowel steel that rotates of blind stitching
, it is easy to meet design requirement, accomplish that length, angle are unified, spacing is uniform, only need during construction
Lay two to three support fixed positions, place, easy construction.And conventional transfer levers is scattered single light
Round bar, the accuracy of its position depends on the dowel steel support of the laying at scene, and a seam needs to set
Putting many dowel steels, and multiple matched dowel steel support, difficulty of construction is bigger, it is difficult to completely
Meeting design requirement, therefore, dowel steel smooth degree, spacing each other the most do not ensure.
Accompanying drawing explanation
Fig. 1 is the structural representation of power transmission unit A of the present invention；
Fig. 2 is the structural representation of power transmission unit B of the present invention；
Fig. 3 is the structural representation of connector of the present invention；
Fig. 4 is that the structure after power transmission unit A of the present invention is connected by connector with power transmission unit B is shown
It is intended to；
Fig. 5 is the use view of the present invention.
Wherein, entitled corresponding to the reference in accompanying drawing:
1-power transmission unit A, 11-round steel, 12-plain bar A, 13-arc groove A, 2-power transmission
Unit B, 21-hollow round steel, 22-plain bar B, 23-arc groove B, 24-breach A, 3-
Connector, 31-ball, 32-ball external member, 33-breach B, 4-rubber blanket, 5-mixes earth plate
A, 6-mix earth plate B.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment
As shown in Fig. 1～Fig. 5, a kind of can blind stitching bending dowel bars into cement concrete pavement, including pass
Power unit A1 and power transmission unit B2, is lived by connector 3 between power transmission unit A1 and power transmission unit B2
It is dynamically connected；Power transmission unit A1 includes round steel 11 and the plain bar A12 being connected with round steel 11, power transmission
The round steel 11 of unit A1 is outside is provided with several arc grooves A13.Power transmission unit B2 includes hollow round steel
21 and the hollow round steel 21 of plain bar B22, power transmission unit B2 that is connected with hollow round steel 21 in
Portion has the movable cavity that match outside with round steel 11, and the hollow round steel 21 of power transmission unit B2 has
The breach A24 being connected with movable cavity, the movable cavity internal chamber wall of hollow round steel 21 is provided with several
The round steel 11 clearance fit peace of the arc groove B23 corresponding with arc groove A13, power transmission unit A1
It is loaded in hollow round steel 21 movable cavity of power transmission unit B2, the plain bar A12 of power transmission unit A1
Pass at the breach A24 of hollow round steel 21.Connector 3 includes ball external member 32 and is installed on ball
Ball 31 in external member 32, ball external member 32 is provided with corresponding with the breach A24 of hollow round steel 21
Breach B33, the ball 31 of the connector 3 corresponding arc being movably installed in power transmission unit A1 respectively is recessed
Between the arc groove B23 of groove A13 and power transmission unit B2.
During as it is shown in figure 5, use,
1, the number of the plain bar A12 of dowel steel unit A1 is determined respectively according to the width of concrete plate
The quantity and spacing of the plain bar B22 of amount and spacing and power transmission unit B2；
2, then dowel steel unit is combined as one overall can the cement concrete pavement of blind stitching bending
Dowel steel；
3, according to design attitude and height, 2～3 dowel steel supports are installed, lay whole can blind stitching curved
Bent dowel bars into cement concrete pavement；
4, at design attitude formwork supporting plate, mixed earth plate A5, mixed earth plate B6 are poured；
5, after concrete hardening on the left of the plain bar A12 end of dowel steel unit A1 2～3cm
Place's joint-cutting (has determined that before particular location concreting and labelling), and the joint-cutting degree of depth is carried out according to design.
By the effect of dowel steel of the present invention, the concrete near road deck seam is because of answering that warpage produces
Power will be greatly reduced, and stress concentration phenomenon will effectively reduce, and neighbouring or dowel steel the rod end position of seam goes out
Situation about now ftractureing also will substantially reduce, and thus protect cement concrete pavement structure.
As shown in Figure 4, it is provided with at the breach A24 of power transmission unit B2 outside encirclement plain bar A12
Rubber blanket 4, the rubber blanket 4 of the present invention, preferably with the fan-shaped cylinder of truncated cone-shaped hollow, can effectively be filled out
Fill the gap of indentation, there, prevent cement mortar from entering dowel steel internal blocking dowel steel and relatively rotate；Rubber blanket
4 possess higher intensity and fatigue toughness, and rubber blanket 4 possesses certain elasticity, and rubber blanket 4 can
Relatively rotating of power transmission unit A1 and power transmission unit B2, rubber blanket simultaneously is met by self compression
4 can be used for blocking power transmission unit A1 and power transmission unit B2 gap between the two.Due to power transmission unit B2
Breach A24 at be provided with rubber blanket 4, when plain bar A12 passes at breach A24, be positioned at breach
Plain bar A12 at A24 will be wrapped up by rubber blanket 4, and such plain bar A12 is at breach A24
Place can swing up and down comparatively safely, and rubber blanket 4 has elasticity, and plain bar A12 does not swings
Or at the end of Bai Donging, rubber blanket 4 also can tight plain bar A12, it is ensured that dowel steel is mixed
Self-position is recovered during concrete board not warpage.
The round steel 11 of power transmission unit A1 is overall rounded, and arc groove A13 is along the cylindrical of round steel 11
Wall is uniformly arranged；Hollow round steel 21 is overall rounded, and the movable cavity entirety of hollow round steel 21 is rounded,
Arc groove B23 is uniformly arranged along the movable cavity inner round wall of hollow round steel 21, and arc groove
B23 is equal with arc groove A13 quantity and one_to_one corresponding is arranged.
The present invention specifically preferably fabrication scheme is as follows: a diameter of 32mm of round steel 11, plain bar A12
The a length of 270mm of a diameter of 28mm, plain bar A12, the section radius of arc groove A13 is
5mm, the degree of depth of arc groove A13 is 3mm.The external diameter of the hollow round steel 21 of power transmission unit B2 is 62mm,
The internal diameter of hollow round steel 21 is 42mm.A diameter of 28mm of the plain bar B22 of power transmission unit B2,
The radius 5mm of the arc groove B of a length of 370mm of plain bar B22, power transmission unit B2, arc
Degree of depth 3mm of groove B.There is between round steel 11 and hollow round steel 21 the ball assemblage gap of 10mm,
A diameter of 10mm of ball 31, ball 31 is just installed between round steel 11 and hollow round steel 21.
The central angle corresponding to breach A24 of hollow round steel 21 is 8 °, and ball external member 32 entirety is circle
Shape, the central angle corresponding to breach B33 of ball external member 32 is 8 °.Practical data shows, cement mixes
The adjacent mixed earth plate of solidifying soil surface can occur the warpage of the most about 4 ° simultaneously, so this
Bright breach A24 and breach B33 can preferably tackle all situations of adjacent mixed earth plate warpage.
The use step of the present invention and operation principle are as follows:
The use step introducing the present invention in conjunction with Fig. 4, Fig. 5 is as follows:
1, according to design requirement, round steel 11, the diameter of hollow round steel 21, length, and light circle are set
Reinforcing bar A12, the diameter of plain bar B 22, length, spacing and quantity, process several coagulating cements
Soil surface dowel steel (abbreviation dowel steel).
2, the surface of the dowel steel of the present invention is done antirust treatment, the disease that preventing and treating corrosion causes.
3, the seaming position in design arranges that support at 2～3 arranged by support, every seam, it is ensured that power transmission
The height of bar meets design requirement.
4, install can blind stitching bending dowel bars into cement concrete pavement, make in the middle part of dowel steel align seam,
That is: the breach A24 leftmost side distance seam about 2cm of power transmission unit B2.
The operation principle of the present invention is as follows:
Power transmission unit A1 and power transmission unit B2 is mutually twisted by connector 3, by connector 3 and
Rubber blanket 4 relatively rotates.The power transmission unit A1 and power transmission unit B2 of dowel steel are mutually twisted can
The effect of load transmission is provided, when the mixed earth plate A5 of seam side is by Vehicle Load,
Can be effectively passed on the mixed earth plate B6 of seam opposite side.Can relatively rotate and can make seam both sides
Dowel steel bend with the warpage of Cement Concrete Pavement Slab, in a flexible manner reply warpage harm.
While the present invention disclosure satisfy that between plate, load transmits, can tolerate that plate occurs certain warpage, solve
Determine and caused, because conventional dowel steel self can not bend, the problem that stress is concentrated, plate ftractures.
Above-mentioned embodiment is a preferred embodiment of the present invention, is not for limiting the present invention's
Implement and interest field, all equivalences made according to the content described in the present patent application scope of patent protection
Change and approximation are replaced, and all should be within the scope of the present invention.
Claims (4)
1. one kind can blind stitching bending dowel bars into cement concrete pavement, it is characterised in that: include power transmission unit A(1) and power transmission unit B(2), described power transmission unit A(1) with power transmission unit B(2) between pass through connector (3) be flexibly connected；Described power transmission unit A(1) include round steel (11) and the plain bar A(12 being connected with round steel (11)), described power transmission unit A(1) round steel (11) outside be provided with several arc grooves A(13)；nullDescribed power transmission unit B(2) include hollow round steel (21) and the plain bar B(22 being connected with hollow round steel (21))，Described power transmission unit B(2) the internal movable cavity having and match outside round steel (11) of hollow round steel (21)，Described power transmission unit B(2) hollow round steel (21) have the breach A(24 being connected with movable cavity)，The movable cavity internal chamber wall of described hollow round steel (21) is provided with several and arc groove A(13) corresponding arc groove B(23)，Described power transmission unit A(1) round steel (11) clearance fit be installed on power transmission unit B(2) hollow round steel (21) movable cavity in，Described power transmission unit A(1) plain bar A(12) from the breach A(24 of hollow round steel (21)) and from pass；Described connector (3) includes ball external member (32) and the ball (31) being installed in ball external member (32), described ball external member (32) is provided with and the breach A(24 of hollow round steel (21)) corresponding breach B(33), ball (31) correspondence respectively of described connector (3) is movably installed in power transmission unit A(1) arc groove A(13) and power transmission unit B(2) arc groove B(23) between.
2. can the dowel bars into cement concrete pavement of blind stitching bending according to a kind of described in claim 1, it is characterised in that: breach A(24 described power transmission unit B(2)) place is provided with and surrounds plain bar A(12) outside rubber blanket (4).
3. according to described in claim 1 or 2 a kind of can blind stitching bending dowel bars into cement concrete pavement, it is characterized in that: described power transmission unit A(1) round steel (11) overall rounded, described arc groove A(13) be uniformly arranged along the cylindrical wall of round steel (11)；Described hollow round steel (21) is overall rounded, the movable cavity entirety of described hollow round steel (21) is rounded, described arc groove B(23) be uniformly arranged along the movable cavity inner round wall of hollow round steel (21), and described arc groove B(23) with arc groove A(13) quantity is equal and one_to_one corresponding is arranged.
4. according to described in claim 3 a kind of can blind stitching bending dowel bars into cement concrete pavement, it is characterized in that: the breach A(24 of described hollow round steel (21)) corresponding to central angle be 8 °, described ball external member (32) is overall rounded, the breach B(33 of ball external member (32)) corresponding to central angle be 8 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605299.2A CN106012750B (en) | 2016-07-28 | 2016-07-28 | It is a kind of can blind stitching bending dowel bars into cement concrete pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605299.2A CN106012750B (en) | 2016-07-28 | 2016-07-28 | It is a kind of can blind stitching bending dowel bars into cement concrete pavement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106012750A true CN106012750A (en) | 2016-10-12 |
| CN106012750B CN106012750B (en) | 2018-03-02 |
Family
ID=57115509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610605299.2A Expired - Fee Related CN106012750B (en) | 2016-07-28 | 2016-07-28 | It is a kind of can blind stitching bending dowel bars into cement concrete pavement |
Country Status (1)
| Country | Link |
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| CN (1) | CN106012750B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2263150A (en) * | 1938-08-08 | 1941-11-18 | James H Jacobson | Dowel bar bearing and support |
| US20130209171A1 (en) * | 2012-02-10 | 2013-08-15 | James Thomas | Pavement dowel assembly bar |
| CN203429542U (en) * | 2013-07-29 | 2014-02-12 | 华南理工大学 | Elliptical steel dowel bar for cement concrete pavement |
| CN203546555U (en) * | 2013-10-08 | 2014-04-16 | 铁道第三勘察设计院集团有限公司 | Composite dowel bar with hoop |
| CN204162995U (en) * | 2014-06-30 | 2015-02-18 | 同济大学 | Umbrella shaft type stretching device |
| CN205975257U (en) * | 2016-07-28 | 2017-02-22 | 山西省交通科学研究院 | But cement concrete pavement dowel steel that blind stitching is crooked |
-
2016
- 2016-07-28 CN CN201610605299.2A patent/CN106012750B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2263150A (en) * | 1938-08-08 | 1941-11-18 | James H Jacobson | Dowel bar bearing and support |
| US20130209171A1 (en) * | 2012-02-10 | 2013-08-15 | James Thomas | Pavement dowel assembly bar |
| CN203429542U (en) * | 2013-07-29 | 2014-02-12 | 华南理工大学 | Elliptical steel dowel bar for cement concrete pavement |
| CN203546555U (en) * | 2013-10-08 | 2014-04-16 | 铁道第三勘察设计院集团有限公司 | Composite dowel bar with hoop |
| CN204162995U (en) * | 2014-06-30 | 2015-02-18 | 同济大学 | Umbrella shaft type stretching device |
| CN205975257U (en) * | 2016-07-28 | 2017-02-22 | 山西省交通科学研究院 | But cement concrete pavement dowel steel that blind stitching is crooked |
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| Publication number | Publication date |
|---|---|
| CN106012750B (en) | 2018-03-02 |
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