KR100966571B1 - Precast pannel for pavement having uneven joint structure - Google Patents

Abstract

The present invention relates to a road paving precast panel 100 for forming a road pavement structure by a plurality of combinations, the body 110 forming a road pavement structure; One side coupling concave-convex portion 120 formed to have a concave-convex cross section over one side of the main body 110; Precast for paving roads having a concave-convex coupling structure including; the other side concave-convex portion 130 formed to have a concave-convex cross section over the entire other side of the main body 110 to have a shape corresponding to the one-side concave-convex portion 120 By presenting the panel 100, even if the shear key yields, it is possible to maintain the function as a road pavement structure by allowing the coupling portion between the two panels to exhibit some shear resistance capability.

Road Paving, Precast, Combined, Uneven

Description

Precast panel for road pavement with uneven structure {PRECAST PANNEL FOR PAVEMENT HAVING UNEVEN JOINT STRUCTURE}

The present invention relates to the field of civil engineering, and in particular, to a road paving precast panel for forming a road pavement structure by combining a plurality of members.

Domestic road pavement can be roughly classified into asphalt concrete pavement and cement concrete pavement, and suitable ones are used according to the characteristics of the application site.

Asphalt pavement has a problem in that breakage such as plastic deformation and fatigue cracking is likely to occur due to reasons such as high temperature in summer, increase of heavy vehicle traffic, and occurrence of habitual congestion section.

Cement concrete pavement is a rigid pavement, so it can solve many of the disadvantages of asphalt concrete pavement.However, it requires a curing time after construction, and it is difficult to maintain and expensive. Have

As a method for solving the problems of the conventional packaging method, precast packaging method that is manufactured in the form of a panel in the factory in advance and constructed in the field has attracted attention.

It uses the molded and manufactured parts in the factory, so that the quality control is possible evenly, so that the frequency of defects and repairs is significantly reduced, and the construction is possible even in winter and at night. There are advantages such as this can be achieved.

In particular, since the precast product manufactured under ideal conditions inside the factory can be transported to the site and installed immediately, it is possible to obtain an excellent effect in comparison with conventional methods in terms of structure quality and construction speed.

1 and 2 show a conventional road paving precast panel.

The precast panel used for road pavement is provided as a unit of a certain size for convenience of transportation and assembled at the site. The coupling part has a protrusion 1 of an angular cross section of the panel 1 as shown in FIG. The method of inserting into the insertion groove 2 of the adjacent panel 1a is taken.

This structure is intended to simultaneously perform the role of the shear key to resist the shear stress and the expansion joint to respond to temperature changes.

However, such a conventional structure has the following problems.

That is, the conventional coupling structure has a structure in which only one shear key bears all the shear stresses in the vertical direction, so when the shear key yields, the shear resistance ability of the coupling portion between both panels is virtually completely lost, and the road It is no longer possible to perform the function as a pavement structure (FIG. 3).

This is the so-called brittle fracture, which is contrary to the intent of the strength design method to ensure that each part of the structure has the same yield strength, so that the efficient use of materials and the stability of the structure.

The present invention has been made to solve the above problems, and even if the shear key yields, the coupling portion between the two panels to provide a certain degree of shear resistance ability to maintain the function as a road paving structure It is an object of the present invention to present a precast panel for road paving.

The present invention provides a road paving precast panel 100 for forming a road paving structure by a plurality of combinations, in order to achieve the object as described above, the body 110 for forming the road paving structure; One side coupling concave-convex portion 120 formed to have a concave-convex cross section over one side of the main body 110; The other side coupling concave-convex portion 130 formed to have a concave-convex cross section over the entire other side of the main body 110 to have a shape corresponding to the one side concave-convex concave portion 120; Precast panel 100 is presented.

The one side coupling concave-convex portion 120 is an upper protrusion 121; It is preferable to include a; lower groove portion 122 formed in a concave shape of the same degree as the upper protrusion 121 protrudes.

An upper vertical surface 101 that is substantially perpendicular to the upper surface is formed on the upper side of the upper protrusion 121, and a lower vertical surface 102 that is substantially perpendicular to the lower surface is formed on the lower side of the lower groove 122.

Preferably, the upper vertical plane 101 and the lower vertical plane 102 are formed on substantially the same plane.

Preferably, the upper protrusion 121 and the lower groove 122 have a curved cross section.

The thickness D1 of the road paving precast panel 100 is 100 to 300 mm, the thickness D2 from the upper protrusion 121 to the upper surface and the thickness D2 from the lower groove 122 to the lower surface. Is preferably from 38 to 70 mm.

The length L1 from which the upper protrusion 121 protrudes from the vertical surfaces 101 and 102 and the depth L1 from which the lower groove 122 is recessed are preferably 1 to 5 mm.

It is preferable that the angle θ between the tangents contacting the upper and lower ends of the upper protrusion 121 is 90 to 140 °.

The present invention proposes a precast panel for paving roads having a concave-convex coupling structure to maintain a function as a road paving structure by allowing the coupler between both panels to exhibit a shear resistance capability even if the shear key yields.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figure 4 below, the present invention relates to a road paving precast panel 100 for forming a road paving structure by a plurality of combinations, the body 110 forming a road paving structure; One side coupling concave-convex portion 120 formed to have a concave-convex cross section over one side of the main body 110; The other side coupling concave-convex portion 130 is formed to have a concave-convex cross section over the entire other side of the main body 110 to have a shape corresponding to the one side concave-convex concave portion 120.

That is, the coupling structure between the two panels is not made by only one shear key as in the related art, and the convex and convex coupling of the one side coupling concave-convex portion 120 and the other side concave-convex portion 130 of the two side panels 100 and 100a is performed. The structure is to be combined.

This structure can maintain the shear resistance ability by interlocking the rest of the structure even if some of the uneven structure yields, it is possible to obtain the effect that the function as a road paving structure is not lost (Fig. 8).

In other words, the conventional structure takes the form of brittle fracture, the coupling structure according to the present invention takes the form of ductile fracture, it can be seen that even in the light of the strength design method is a very excellent structure.

Hereinafter, specific embodiments of each component of the panel according to the present invention will be described in detail with reference to FIG. 4.

Since the other side coupling concave-convex portion 130 is formed in a shape corresponding thereto so as to be combined with the one side concave-convex concave portion 120, only the embodiment of the one side concave-convex convex portion 120 will be described.

One side coupling uneven portion 120, as shown in Figure 4, the upper protrusion 121; It may be formed by a structure including a lower groove portion 122 formed in a concave shape of the same degree as the upper protrusion 121 is protruded, the structure is formed more protrusions and grooves as shown in FIG. You can also take

The latter may be said to be more advantageous in terms of interlocking action, but in practice, the thickness of the precast panel is limited, and the process of manufacturing the same is not efficient, and thus, the pair of protrusions 121 is similar to the former. And it is more preferable that the uneven structure is formed by the groove 122.

The reason why the protrusion of the upper protrusion 121 and the recess of the lower groove 122 are substantially the same is to prevent stress concentration by allowing the load to be evenly distributed.

An upper vertical surface 101 is formed on the upper side of the upper protrusion 121 substantially perpendicular to the upper surface, and a lower vertical surface 102 substantially perpendicular to the lower surface is formed on the lower side of the lower groove 122 to prevent local destruction. It is preferable in terms of preventing.

The upper vertical plane 101 and the lower vertical plane 102 may be formed on substantially the same plane, which is also to prevent stress concentration as described above.

The upper protrusion 121 and the lower groove 122 may have an angular cross-sectional structure as shown in FIGS. 4 and 5, but both sides may have a curved cross-sectional structure as shown in FIG. 6 and below. Since the bonding area of the bonding portion is stably enlarged, it is preferable in terms of obtaining a greater effect of ductile fracture.

The thickness D1 of the road pavement precast panel 100 may be manufactured to about 100 to 300 mm. In order to prevent the edge breakage of the vertical surfaces 101 and 102 of the coupling portion, the thickness D2 from the upper protrusion 121 to the upper surface D2 may be manufactured. ) And the thickness D2 from the lower groove 122 to the lower surface are preferably within the range of 38 to 70 mm.

If the length L1 from which the upper protrusion 121 protrudes from the main body 110 is excessively long, the risk of shear failure increases, and vice versa, the length L1 may not properly serve as a shear key. ~ 5 mm is suitable.

The depth L1 in which the lower groove 122 is recessed is also the same as above.

For the same reason, it is preferable that the angle θ between the tangents respectively contacting the upper end and the lower end of the upper protrusion 121 is in the range of 90 to 140 °.

Since the above has been described only with respect to some of the preferred embodiments that can be implemented by the present invention, the scope of the present invention, as is well known, should not be construed as limited to the above embodiments, the present invention described above It will be said that both the technical idea and the technical idea which together with the base are included in the scope of the present invention.

1 is a cross-sectional view of a conventional road paving structure.

FIG. 2 is a detailed view of portion A of FIG. 1. FIG.

FIG. 3 is a detailed view of the destructive state of FIG. 2; FIG.

Figure 4 below shows an embodiment of a panel according to the present invention,

4 is a cross-sectional view of the first embodiment.

5 is a sectional view of a second embodiment;

6 is a sectional view of a third embodiment;

7 is an overall sectional view of the third embodiment.

Fig. 8 is a sectional view showing a broken state in the third embodiment.

** Description of the symbols for the main parts of the drawings **

100: precast panel 101 for road pavement: upper vertical surface

102: lower vertical surface 110: main body

120: uneven portion for coupling on one side 121: upper protrusion

122: lower groove 130: uneven portion for coupling the other side

Claims (8)

delete In the road paving precast panel 100 for forming a road paving structure by a plurality of combinations, A main body 110 forming the road pavement structure; One side coupling concave-convex portion 120 formed to have a concave-convex cross section over one side of the main body 110; And the other side coupling concave-convex portion 130 formed to have a concave-convex cross section over the entire other side of the main body 110 to have a shape corresponding to the one side concave-convex concave portion 120. The one side coupling concave-convex portion 120 Upper protrusion 121; A lower groove portion 122 formed in a concave shape substantially the same as that of the upper protrusion 121 protrudes; Road paving precast panel 100 having a concave-convex coupling structure comprising a. The method of claim 2, An upper vertical surface 101 substantially perpendicular to the upper surface is formed on the upper side of the upper protrusion 121, and a lower vertical surface 102 substantially perpendicular to the lower surface is formed on the lower side of the lower groove 122. Precast panel 100 for road paving having an uneven coupling structure. The method of claim 3, The upper vertical surface (101) and the lower vertical surface (102) is a road paving precast panel 100 having a concave-convex coupling structure, characterized in that formed on the same plane. The method of claim 3, The upper protrusion 121 and the lower groove 122 have a curved cross-sectional shape, the road paving precast panel 100 having an uneven coupling structure. The method of claim 5, The thickness D1 of the road paving precast panel 100 is 100 to 300 mm, the thickness D2 from the upper protrusion 121 to the upper surface and the thickness D2 from the lower groove 122 to the lower surface. The precast panel 100 for road pavement having a concave-convex coupling structure, characterized in that 38 ~ 70 mm. The method of claim 6, The length L1 from which the upper protrusion 121 protrudes from the vertical surfaces 101 and 102 and the depth L1 in which the lower groove 122 is recessed are 1 to 5 mm. Precast Panel 100. The method of claim 5, The angle (θ) between the tangent contacting each of the upper and lower ends of the upper protrusion 121 is 90 ~ 140 ° road paving precast panel 100 having an uneven coupling structure.

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