JP2011174353A - Precast concrete side ditch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete side ditch capable of structurally reducing and suppressing the generation of noise generated by a rattle of a cover, and the cover. <P>SOLUTION: In the concrete side ditch having the cover placed on an upper opening cover holder of a side ditch body, a step surface of the cover holder of the side ditch body is formed as a protruding streak-collected surface in a flush cross-sectional shape in such a manner that stripes are arranged at regular intervals in a constant direction, and a contact surface corresponding to the cover holder of the bottom of the cover is also formed as a protruding streak-collected surface in a flush cross-sectional shape in such a manner that stripes are arranged at regular intervals in parallel with protrusive streaks of the step surface of the cover holder of the side ditch body while only an interval between the stripes is different from an interval between the stripes of the step surface of the cover holder. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a structure of a main body of a precast concrete side groove that is embedded in a side portion of a roadway or the like and drains road surface rainwater, and a structure of the lid.

Precast concrete side gutters are formed with blocks with inner width of 0.3m, length of 1m, 2m, etc., each block is opened at the top for road rainwater collection and maintenance, length of 0.5m, 1m, etc. The lid is not only flat but also L-shaped with a curb.
In the conventional side groove, the bottom surface of the lid is generally flat, and the lid hooking stepped surface of the side groove main body which becomes the contact surface between the lid and the main body is also horizontal.
In recent years, in order to increase the degree of adhesion of this contact surface and reduce rattling noise, the cross-sectional shape of the contact portion between the lid and the main body is inclined or curved, and combinations such as surface contact and line contact are also diversified. It is progressing.

  Japanese Patent No. 3184486   Utility Model Registration No. 3031035   Utility Model Registration No. 3037878   Utility Model Registration No. 3079870

Since the conventional lid bottom is flat and the lid hanging step of the side groove body that receives the lid is also flat, it is easy to rattle due to a slight uneven inclination between both surfaces and twisting of the lid and side groove body. In the joint portion of the side groove main body block, a slight uneven step is likely to occur in the construction step, and the lid covering the joint portion also causes rattling and noise is generated.
It was particularly large when a vehicle or the like passed through the top of the lid, which was a source of noise pollution.

In order to eliminate such problems, in the conventional standard products, indirect contact with rubber packing or the like is performed on the contact surface between the lid and the side groove body, but this leads to cost increase due to material costs and construction work. It was.
In addition, the cross-sectional shape of the lid-covering step surface of the main body is inclined and bent, and the lid bottom also has a corresponding shape, and the degree of contact of the contact part is increased by “surface contact”, “line contact” etc. to prevent rattling Although it is also used, it is difficult to get close contact even if a slight uneven step occurs at the joint part of the main body, and in addition, because of the special shape, it is not compatible with conventional products or other products with special shapes It is a difficult point.
It is an object of the present invention to obtain a main body and a lid of a concrete side groove having a structure capable of reducing or suppressing the generation of noise even with the conventional standard product shape as described above, by reducing or eliminating the use of rubber packing or the like. It is an issue.

In order to solve the above problems, the concrete side groove structure of the present invention has a lid opening at the top, a side groove body with a lid stepping surface on which the bottom of the lid is placed, and the step surface of the side groove body. They are formed on a convex gathering surface having the same height cross-sectional shape in a uniform striped pattern arrangement.
Furthermore, the contact surface of the lid bottom is also formed on the convex gathering surface having the same height cross-sectional shape at equal intervals, with only the stripe interval being different, in parallel with the convex stripes of the step surface.
The contact portion has a minute gap that varies within the range of the height of the ridge due to the interference of the upper and lower ridge groups, and adheres to the inclination of the concavo-convex shape.

  The step surface of the lid and the contact surface on the bottom of the lid are indirect contact with the contact surface of the main body and the lid with a small gap compared to the conventional product by contacting the lid with the protruding stripes that are parallel stripes and differ only in the interval. Because of the contact, the rattling noise due to the lid upper passage load is reduced without reducing or using the rubber packing or the like.

  Even if there is a distortion in the contact gap due to twisting of the gutter body or lid, even if it is covered on a slightly uneven step at the junction of the main body, the contact part will collide due to absorption by a minute gap. Indirect contact is difficult, and noise is suppressed.

Each formation of the lid hanging step surface and the lid bottom contact surface of the side groove main body does not cause an increase in cost because of a conventional manufacturing process.
And, by matching the shape with the general distribution product, it is compatible, and the attachment and detachment of the lid is the same, and it is suitable for the maintenance after the side groove is completed.

  The same effect as described above can be obtained even when the crossing shape of the contact surface between the lid and the side groove main body is a special inclination or curve, or a combination thereof.

  It is a perspective view which shows the example of an embodiment by the plane support of a drop lid side groove | channel main body and a lid | cover.   It is a perspective view which shows the example of an embodiment by the plane support of a U-shaped side groove | channel main body and an L-shaped lid with a curb.   It is a perspective view which shows the example of an embodiment by the curved surface support of a drop lid side groove | channel main body and a cover.   It is a perspective view which shows the example of an embodiment by the inclination support of a portal side gutter main body and a lid | cover.   FIG. 2 is an enlarged view of part A of FIG. 1.   FIG. 2 is an enlarged view of part B of FIG. 1.   FIG. 2 is a cross-sectional view taken along line aa in FIG. 1.   FIG. 3 is a cross-sectional view taken along line bb in FIG. 2.   FIG. 4 is a cross-sectional view taken along line cc in FIG. 3.   FIG. 5 is a cross-sectional view taken along the line d-d in FIG. 4.   It is an expanded longitudinal cross-sectional view which shows the indirect contact state in the protruding-line assembly surface of a side groove | channel main body and a lid | cover.   It is an expansion longitudinal cross-section which shows another indirect contact state in the side groove | channel main body and the protruding item | line collection surface of a lid | cover.   It is an expansion longitudinal cross-section which shows another indirect contact state in the side groove | channel main body and the protruding item | line collection surface of a lid | cover.

The stepped surface of the side groove main body is formed on the convex gathering surface having the same height cross-sectional shape in a uniform direction striped pattern arrangement.
Further, the lid bottom contact surface is also formed on the ridge aggregate surface having the same height cross-sectional shape at equal intervals, differing only in the stripe interval in parallel with the step surface ridge.
As a result, the contact part between the side groove main body and the lid varies depending on the interference between the upper and lower ridges, the strength of uneven contact, the slight gap due to stagnation and holding, and the unevenness within the range of the ridge height. Indirect contact with keeping

  Thus, the contact density between the side groove main body and the lid is increased by the set protrusions from both the upper and lower sides, and the engagement density due to interference between the set protrusions that are parallel in the vertical direction and the stripe intervals do not match is also combined. Since the contact portion makes an indirect contact while keeping a minute gap without being in close contact, rattling noise due to the lid upper portion passing load is considerably reduced.

  In the past, rattling noise was generated due to torsion of the upper groove body and lid of the manufacturing, and the step due to the construction error of the joint part of the side groove body. The torsional distortion and the level difference of the contact surface are also adapted to absorb, and the contact portion between the side groove main body and the lid maintains a minute gap so that a collision sound is hardly generated.

FIG. 1, FIG. 3, and FIG. 4 show an embodiment.
FIG. 1 shows a cover-hanging structure by a flat support of a lid-side groove main body and a lid, FIG. 2 shows a flat support of a U-shaped side groove main body and an L-shaped lid with a curb, and FIG. 3 shows a curved surface of the lid-side groove main body and the lid. FIG. 4 is an embodiment showing a cover-hanging state by the inclined support of the portal side groove main body and the cover.
(1) is a gutter body (2) is a lid.

In the embodiment of FIG. 1, the lid-type side groove main body (1) has the inner surface of the side groove as it is as an opening (3), and both lid hanging portions are formed on a flat step surface (4) for housing and mounting the lid (2). As shown in FIG. 6, the ridges (6) are formed in a cross-sectional shape with the same height in a striped pattern arrangement at right angles to the extending direction of the side grooves.
The lid (2) is shaped and accommodated corresponding to the gutter body, and in this embodiment, a drainage cut (10) serving as a rainwater inlet is provided at one end, and a flat shape corresponding to the step surface (4) of the gutter. As shown in FIG. 6, the ridges (6) are formed in the same height cross-sectional shape at equal intervals in parallel with the ridges of the main body step surface.
When the lid (2) is stored and placed on the side groove body (1), the contact portion is indirect contact with the minute gap (7) held by the interposition of the upper and lower ridges (6) as shown in FIG. .

In the embodiment of FIG. 2, the U-shaped side groove body (1) has a planar step surface (4) on which the top end surfaces of both side walls place the lid (2) and the ridges (6) perpendicular to the side groove extending direction. They are gathered and formed to have the same height cross-sectional shape in an equally spaced striped pattern arrangement.
The lid (2) is shaped to be placed on the top of the side wall of the gutter body, and in this embodiment, a drainage cut (10) serving as a rainwater inlet is provided at one end, corresponding to the step surface (4) of the gutter. On the flat lid bottom contact surface (5), the ridges (6) are formed in the same height cross-sectional shape at equal intervals in parallel with the ridges of the main body step surface, differing only by the stripe interval.
When the lid (2) is placed on the side structure body (1), as shown in FIG. 8, the contact portion is indirect contact with the minute gap (7) being held by the interposition of the upper and lower ridges (6). .
In addition, the lid mounting of the embodiment of FIG. 2 is such that the end surface position in the length direction of the side groove body (1) and the end surface position in the length direction of the lid (2) do not coincide with each other. Although a slight level difference is likely to occur on the step surface during construction, which causes the rattling of the upper lid, absorption is suppressed by the minute gap (7) due to the gathering of the upper and lower ridges (6).

In the embodiment of FIG. 3, the lid-type side groove body (1) has a ridge on the step surface (4) on the lower side of the curved surface where both lid hooks are in the opening (3) and the lid (2) is stored. (6) is formed in the same height cross-sectional shape in a striped pattern arrangement at right angles to the side groove extending direction.
The lid (2) is shaped and accommodated corresponding to the gutter body. In this embodiment, a water collecting cut (10) serving as a rainwater inlet is provided at one end, and a curved surface corresponding to the step surface (4) of the gutter. On the lid bottom contact surface (5) on the lower side, the ridges (6) are formed in the same height cross-sectional shape at equal intervals in parallel with the ridges on the step surface of the main body, differing only by the stripe interval.
When the lid (2) is stored and placed on the side structure body (1), the contact portion is indirect contact with the minute gap (7) held by the interposition of the upper and lower ridges (6) as shown in FIG. is there.

In the embodiment of FIG. 4, the free-gradient portal side groove body (1) is provided with an inclined step surface (4) for accommodating and mounting the lid (2) on both lid hanging portions in the upper central opening (3). The ridges (6) are formed in the same height cross-sectional shape in a striped pattern arrangement at right angles to the extending direction of the side grooves.
The lid (2) is shaped and accommodated corresponding to the gutter body, and in this embodiment, a water collecting cut (10) serving as a rainwater inlet is provided at one end, and an inclined shape corresponding to the step surface (4) of the gutter. On the lid bottom contact surface (5), the ridges (6) are formed in the same height cross-sectional shape at equal intervals in parallel with the ridges of the main body step surface, with only the stripe interval being different.
When the lid (2) is housed and mounted on the side groove body (1), the contact portion is indirect contact with the minute gap (7) held by the gathering of the upper and lower ridges (6) as shown in FIG. .

11 and 12 show the state of the contact surface.
FIG. 11 shows the case where the minute gap (7) is almost maximum, FIG. 12 shows almost the minimum, and FIG. 13 shows the intermediate case.
The ridges are gathered in the same height cross-sectional shape on the flat or curved surface in a uniform directional striped pattern arrangement. The standard of the cross-sectional dimensions is that the bottom width is 5 to 10 mm, the height is 1 to 3 mm, the center interval is 5 to 15 mm, and the vertical stripe interval difference is 1 to 3 mm.
The minute gap (7) of the contact portion is not only for interference with the design load such as vehicle running, but also for the twisting of the storage portion of the side groove main body (1) and the lid (2), the acting direction of the load, The holding of the strips competes to obtain a noise reduction suppressing effect.

The side grooves according to the present invention are compatible with general distribution products, and the formation of the convex assembly surface having the same height cross-sectional shape with the uniform direction and uniform spacing according to the design conditions such as the combined use thereof is the side groove body cover step. It can also be only one of the surface or the corresponding lid bottom contact surface.
In this case, the contact portion between the side groove main body and the lid is only one of the upper and lower convex gathering surfaces, so that the interference effect does not occur and the density of the convex strips is reduced. It is possible to obtain an effect of suppressing noise without making contact or reducing the use of rubber packing or the like by indirect contact while maintaining the above.

  In maintenance management after the completion of the side groove, even if the interference effect is less likely to occur, such as when the upper and lower set of ridges have the same stripe spacing, or the direction stripe pattern of the ridges and the height cross-sectional shape do not match, the contact surface is very small. Indirect contact is made at intervals, and a noise suppression effect can be obtained within that range.

DESCRIPTION OF SYMBOLS 1 Side groove main body 2 Lid 3 Opening 4 Step surface 5 Lid bottom contact surface 6 Projection 7 Minute gap 10 Water collecting notch 11 Upper surface 12 Lower surface

Claims (2)

  In the concrete side groove on which the lid is placed on the upper opening lid hook of the side groove main body, the side groove main body lid hanging step surface is formed in a convex streak collecting surface having the same height cross-sectional shape in a uniform directional stripe pattern arrangement, The contact surface corresponding to the lid hook is also formed on the ridge assembly surface having the same height cross-sectional shape at equal intervals, with only the stripe interval being different in parallel with the ridge of the side groove main body cover step surface. A precast concrete side groove characterized by indirect contact while maintaining a minute gap due to interference between upper and lower ridges without causing the contact portion to stick.   In a concrete side groove on which the lid is placed on the upper opening lid of the side groove main body, only one of the side groove main body lid stepping surface or the contact surface corresponding to the lid hanging portion of the lid bottom is equally spaced at regular intervals. It is formed on the ridge assembly surface with the same height cross-sectional shape in the pattern arrangement, and the contact portion of the side groove main body and the lid does not come into close contact, and the indirect contact is made while maintaining a minute gap by the ridge group. Precast concrete gutter.

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