CN217174247U

CN217174247U - Longitudinal joint structure applied to road expansion joint

Info

Publication number: CN217174247U
Application number: CN202221044872.4U
Authority: CN
Inventors: 潘启发; 叶颂民; 李波; 欧阳志俊; 林育琛
Original assignee: GUANGZHOU HENGSHENG CONSTRUCTION ENGINEERING CO LTD
Current assignee: GUANGZHOU HENGSHENG CONSTRUCTION ENGINEERING CO LTD
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-08-12
Anticipated expiration: 2032-05-05

Abstract

The utility model provides an use vertical joint structure on road expansion joint, includes that the expansion joint to two adjacent concrete slab crossing department in the road carries out the vertical joint structure of seam, and this expansion joint is perpendicular with the road surface central line of road, vertical joint structure includes polyvinyl chloride daub, slip dowel steel, cork joint strip, and the slip dowel steel is installed between polyvinyl chloride daub and cork joint strip and is passed the expansion joint, polyvinyl chloride daub fills a crack in order to realize the upper portion front cover to the expansion joint to the upper portion of expansion joint, cork joint strip is pre-buried in the lower part of expansion joint and is scribbled pitch in the expansion joint lower part. Through the utility model discloses a vertical seam structure can improve concrete slab's atress bearing capacity, avoid the expansion joint between the concrete slab by the fracture, can let the concrete slab atress more even, prevents that the rainwater from permeating to in the expansion joint.

Description

Longitudinal joint structure applied to road expansion joint

Technical Field

The utility model relates to a road concrete pavement technical field especially relates to an use vertical seam structure on road expansion joint.

Background

The road is formed by pouring concrete slabs with certain thickness, the concrete slabs have the properties of expansion with heat and contraction with cold, and the concrete slabs can expand and contract to different degrees due to the change of air temperature all the year round. During day and night, when the temperature rises in the daytime, the temperature of the top surface of the concrete slab is higher than that of the bottom surface, and the temperature difference can cause the middle part of the concrete slab to form a bulging trend; when the temperature is lower at night, the temperature of the top surface of the concrete slab is lower than that of the bottom surface, so that the periphery and the corners of the concrete slab tend to tilt. To avoid these drawbacks, the road surface is divided into a plurality of concrete slabs, and the concrete slabs are spliced together, so that the problem of the raising of the periphery and corners of the concrete slabs can be avoided, but the splicing method has some disadvantages:

(1) no matter how the concrete slabs are spliced, the concrete slabs cannot be completely continuous, gaps exist, the overload phenomenon of vehicles tends to be common along with the increasing of heavy vehicles transported on highways, when wheels act on the edge of one concrete slab, two adjacent slabs at the gaps generate differential settlement, the gaps are disconnected along the road surface in depth, and the disconnected concrete can cause the load transfer capacity to be reduced and cannot meet the bearing requirements of traffic roads;

(2) when vehicles pass through a lot, the expansion joint in the concrete is easy to crack, rainwater easily enters the expansion joint, and even the components such as a road concrete slab and the like are damaged.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a solve the technical problem that prior art exists, the utility model provides a can not take place the expansion joint under the wheel load recurrence and split, possess good corrosion resistance, can improve concrete slab's atress bearing capacity, avoid the expansion joint between the concrete slab by the fracture, make the concrete atress more even, prevent that the rainwater from permeating the vertical seam structure in the expansion joint.

The utility model discloses an above-mentioned technical problem is solved to following technical scheme:

a longitudinal joint structure applied to a road expansion joint comprises a longitudinal joint structure for jointing expansion joints of two adjacent concrete plates in a road, wherein the expansion joints are perpendicular to a central line of a pavement of the road, the longitudinal joint structure comprises polyvinyl chloride cement, a sliding force transmission rod and a cork joint filling plate, the sliding force transmission rod is installed between the polyvinyl chloride cement and the cork joint filling plate and penetrates through the expansion joints, the polyvinyl chloride cement fills joints the upper parts of the expansion joints to realize the upper covers of the expansion joints, the cork joint filling plate is pre-embedded in the lower parts of the expansion joints and is internally coated with asphalt in the lower parts of the expansion joints, the sliding force transmission rod comprises a sliding end and a fixed end, the sliding end and the fixed end are oppositely arranged and arranged at two ends of the sliding force transmission rod, the fixed end of the sliding force transmission rod is connected with the edge of one concrete plate, the sliding end of the sliding force transmission rod is arranged in an edge groove of the other concrete plate, the sliding dowel bar can freely stretch and move in the edge groove of the other concrete plate through the sliding end.

As a further improvement aiming at the technical scheme, the sliding dowel bar comprises two rows of steel bar supports, the two rows of steel bar supports are respectively connected with the bottoms of the sliding end and the fixed end so as to support the sliding end and the fixed end, and the distance between the two rows of steel bar supports is 500 mm.

As a further improvement aiming at the technical scheme, the bottom of the steel bar support is provided with an A12 support transverse rib.

As a further improvement aiming at the technical scheme, the surface of the sliding dowel bar is sequentially coated with a rust-proof paint layer and a grease layer from inside to outside.

As a further improvement aiming at the technical scheme, a polyvinyl chloride film is wrapped outside the grease layer of the sliding dowel bar.

As a further improvement aiming at the technical scheme, the sliding end of the sliding dowel bar is sleeved with a rigid polyvinyl chloride sleeve, and the inner diameter of the sliding dowel bar is 32 mm.

As a further improvement aiming at the technical scheme, the sliding dowel bar is made of A28 steel bars, the inner diameter of the sliding dowel bar is 32mm, and the length of the sliding dowel bar is 100 mm.

As a further improvement aiming at the technical proposal, the thickness of the polyvinyl chloride daub filled on the upper part of the expansion joint is 10 mm.

Compared with the prior art, the technical scheme of the utility model following beneficial effect has at least:

(1) the utility model discloses a longitudinal joint structure includes the slip dowel steel, install the slip dowel steel between polyvinyl chloride clay and cork joint strip and pass the expansion joint, the slip dowel steel includes slip end and stiff end, links to each other the stiff end of slip dowel steel with the edge of a concrete slab, sets up the slip end of slip dowel steel in the edge fluting of another concrete slab, and the slip dowel steel can freely stretch out and draw back the activity in the edge fluting of another concrete slab through the slip end, the utility model discloses a run through the slip dowel steel inside the concrete slab expansion joint, make whole concrete slab possess good shear resistance, can resist the complex external environment to the depression of concrete slab, make the contact surface atress of concrete slab even simultaneously, make the concrete slab difficult expansion joint that takes place under the load of wheel repeated action split, can improve concrete slab's durability, the service life of the concrete slab pavement is prolonged.

(2) The utility model discloses vertical joint structure includes polyvinyl chloride cement and cork joint compound board, caulks through the upper portion of polyvinyl chloride cement to the seam that expands to the realization is to the upper portion front cover of seam that expands, with cork joint compound board pre-buried in the lower part of seam that expands, and is scribbled pitch in the seam lower part that expands, through caulking the seam that expands, can prevent in the rainwater infiltration seam that expands, plays fine water-proof effects.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following detailed description is given in conjunction with the preferred embodiments, together with the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of the relationship between the longitudinal seam structure and the expansion seam of the present invention.

In the figure: the concrete slab comprises a sliding dowel bar 1, a sliding end 11, a fixed end 12, a steel bar support 13, an A12 support transverse bar 14, a hard polyvinyl chloride casing 15, polyvinyl chloride plaster 2, a cork caulking plate 3 and a concrete slab 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the drawings, which are merely for convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounting," "connecting," "bonding," and "laying" are to be construed broadly, and may be, for example, fixedly, detachably, or integrally connected, mechanically, electrically, directly, elastically, indirectly through an intermediate medium, or communicating between two elements.

As shown in fig. 1, the embodiment of the utility model provides an use vertical seam structure on road expansion joint is provided, including vertical seam structure, carry out the seam through the expansion joint of two adjacent concrete slab 4 crossing in vertical seam structure to the road, should expand the seam perpendicular with the road surface central line of road, the seam wall of expansion joint is perpendicular, and the gap width of expansion joint is unanimous. In the preferred embodiment of the utility model, this vertical seam structure includes polyvinyl chloride clay 2, slip dowel steel 1, cork caulk plate 3, install slip dowel steel 1 between polyvinyl chloride clay 2 and cork caulk plate 3 and pass the expansion joint, polyvinyl chloride clay 2 caulks the upper portion of expansion joint, the polyvinyl chloride clay 2 thickness that fills up on expansion joint upper portion is 10mm, thereby realize the upper portion front cover to the expansion joint, with cork caulk plate 3 pre-buried in the lower part of expansion joint, and be scribbled pitch in the expansion joint lower part, utilize cork caulk plate 3 to also can regard as interim caulking strip, when concrete slab 4 receives the water plastering surface, can mention it gently and take out, leave as the pouring caulking material. The utility model discloses a joint filling is carried out to the expansion joint, can prevent in the rainwater infiltration expansion joint, play fine water-proof effects.

This slip dowel steel 1 includes slip end 11 and stiff end 12, set up slip end 11 and stiff end 12 relatively and locate the both ends of slip dowel steel 1, wherein, the stiff end 12 of slip dowel steel 1 links to each other with the edge of a concrete slab 4, the slip end 11 of slip dowel steel 1 sets up in the edge fluting of another concrete slab 4, slip dowel steel 1 can freely stretch out and draw back the activity in the edge fluting of another concrete slab 4 through slip end 11, through running through slip dowel steel 1 inside the concrete slab 4 expansion joint, make whole concrete slab 4 possess good shear resistance, can resist complicated external environment to the pushing down of concrete slab 4, make the contact surface atress of concrete slab 4 even simultaneously, make concrete slab 4 under the load repetitive action of wheel, be difficult for taking place the expansion joint and split.

The utility model discloses when specifically realizing, in two adjacent slip dowel bars 1, slip end 11 arranges opposite with stiff end 12.

The utility model discloses a slip dowel steel 1 includes two rows of steel bar support 13, links to each other two rows of steel bar support 13 with the bottom of sliding end 11 and stiff end 12 respectively, makes things convenient for bearing sliding end 11 and stiff end 12 to interval between two rows of steel bar support 13 is 500mm, and this steel bar support 13's bottom is provided with the horizontal muscle 14 of A12 support, plays the effect of carrying out the support to steel bar support 13. When specifically realizing, the utility model discloses scribble anti-rust paint layer, grease layer from inside to outside in proper order on the surface of slip dowel steel 1 to the grease layer outsourcing at slip dowel steel 1 has the polyvinyl chloride film, and has hard polyvinyl chloride sleeve pipe 15 at the slip end 11 cover of slip dowel steel 1. The sliding dowel bar 1 can be prevented from being rusted, and the corrosion resistance and the rusting resistance of the sliding dowel bar 1 are effectively improved.

The utility model discloses a slip dowel steel 1 adopts the A28 reinforcing bar, and wherein, the internal diameter of slip dowel steel 1 is 32mm, and length is 100mm, when having the space between slip dowel steel 1 and concrete slab 4, can fill through foamed plastic, further improves and carries out waterproof effect to slip dowel steel 1.

Compared with the prior art, the technical scheme disclosed by the embodiment has the following beneficial effects:

in the embodiment, the utility model discloses a slip dowel steel 1 runs through inside 4 joints of concrete slab, make whole concrete slab 4 possess good shear resistance, improve 4 load transmission capacity of concrete slab, can resist complicated external environment and push down to concrete slab 4, make concrete slab 4's contact surface atress even simultaneously, make concrete slab 4 be difficult for taking place the seam under the wheel load recurrence and split, let the durability of concrete pavement expansion joint obtain effectual improvement, prolong the life on 4 roads of concrete slab, make the quality that the road surface bore car pressure show and promote, can also reduce the expense of later stage road surface maintenance.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. The utility model provides an use vertical seam structure on road expansion joint which characterized in that: the longitudinal joint structure comprises a longitudinal joint structure for jointing expansion joints at the intersection of two adjacent concrete plates in a road, wherein the expansion joints are vertical to the central line of the road surface, the longitudinal joint structure comprises polyvinyl chloride cement, a sliding dowel bar and a cork joint filling plate, the sliding dowel bar is arranged between the polyvinyl chloride cement and the cork joint filling plate and penetrates through the expansion joints, the polyvinyl chloride cement fills joints the upper parts of the expansion joints to realize the upper cover of the expansion joints, the cork joint filling plate is pre-embedded at the lower part of the expansion joints and is coated with asphalt in the lower part of the expansion joints, the sliding dowel bar comprises a sliding end and a fixed end, the sliding end and the fixed end are oppositely arranged and arranged at two ends of the sliding dowel bar, the fixed end of the sliding dowel bar is connected with the edge of one concrete plate, and the sliding end of the sliding dowel bar is arranged in an edge groove of the other concrete plate, the sliding dowel bar can freely stretch and move in the edge groove of the other concrete plate through the sliding end.

2. The longitudinal joint structure applied to the expansion joint of the road according to claim 1, wherein: the sliding dowel bar comprises two rows of steel bar supports, the two rows of steel bar supports are respectively connected with the bottoms of the sliding end and the fixed end so as to support the sliding end and the fixed end, and the distance between the two rows of steel bar supports is 500 mm.

3. The longitudinal joint structure applied to the expansion joint of the road according to claim 2, wherein: the bottom of the steel bar support is provided with an A12 support transverse bar.

4. The longitudinal joint structure applied to the expansion joint of the road according to claim 2, wherein: and the surface of the sliding dowel bar is sequentially coated with an anti-rust paint layer and a grease layer from inside to outside.

5. The longitudinal joint structure applied to the expansion joint of the road according to claim 4, wherein: the grease layer of the sliding dowel bar is wrapped with a polyvinyl chloride film.

6. The longitudinal joint structure applied to the expansion joint of the road according to claim 2, wherein: the sliding end of the sliding dowel bar is sleeved with a hard polyvinyl chloride sleeve, and the inner diameter of the sliding dowel bar is 32 mm.

7. The longitudinal joint structure applied to the expansion joint of the road according to claim 6, wherein: the sliding dowel bar is made of A28 steel bars and is 100mm long.

8. The longitudinal joint structure applied to the expansion joint of the road according to claim 1, wherein: the thickness of the polyvinyl chloride daub filled at the upper part of the expansion joint is 10 mm.