JP2019100166A - L-shaped sidewalk-roadway boundary draining block having slit - Google Patents

Abstract

To form an asphalt pavement bicycle travel lane which mitigates the slanting of an apron in an L-shaped street gutter, and avoids reducing the draining ability even without the change in traverse gradient in the roadway part.SOLUTION: An L-shaped block for a street gutter with a slit flow-in sub waterway is used at an undercut apron in which upper surface paving is stopped near a drainer bottom to provide asphalt upper surface paving including a part of an apron surface so as to provide a side strip suitable for draining and travel of bicycles.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a slitted L-shaped walkway road boundary drainage block which is used for a roadside zone of a road and which forms an L-shaped drainage apron for traveling on asphalt paved bicycles.

  A walkway road boundary block for precast concrete L-shaped streets is asphalt paved and forms a rainwater drainage facility where the apron width of 50 cm is generally L-shaped water flow cross section, and drains to a watershed along a road longitudinal slope .

As for the roadway part of the semicircular cross section, the shoulder of the road is in contact with the L-shaped drainage part with a cross slope of approximately 1.5% to 2%, and the apron has a water flow cross section with a width of 50 cm and 6% slope.
Recently, there is an increasing need to use the side belts of roadways as bicycles, but according to the "Safe and Comfortable Bicycle Use Environment Creation Guidelines" shown by the country, the apron width for gutters etc. will be improved to improve the safety of bicycles. It is decided to pay attention to steps such as replacement with one that can secure a wide bicycle traffic space widely or one with high flatness, anti-slip processing, etc. Asphalt paving is required for the entire apron 2% matching.
In the case of road pavements, the apron shoulder apron plus a walkway boundary block is required for drainage facilities, and maintaining this L-shaped drainage section to form a road surface suitable for bicycle riding It is.

JP 2003-253611 A

Problems to be solved by the invention

In the L-shaped drainage part structure by the pedestrian road boundary block, while maintaining the basic structure as the asphalt main pavement stop at the roadway side end, the asphalt top surface is also included including a part of the apron surface, and from the roadway shoulder Adapts to bicycling by mitigating or eliminating cross slope steep changes to the apron.
In this case, even if the apron portion L-shaped inclined surface is flattened from 6% to 2%, it is possible to compensate for the decrease in drainage capacity due to the decrease in drainage cross section.
In addition to setting the curb height of the walkway road boundary block continuous along the roadside zone to 15 cm to 25 cm in the standard part, and as low as 2 cm to 5 cm at crossing entry points such as vehicles, even if it is installed alternately in height It is required that there is no change in drainage function.
In the prior art, since the sub-channel cross section whose center line almost coincides directly under the curb in the curb height standard part is located at an inner diameter narrower than the curb width, the drainage inflow slit from the street passes through the curb from the side. It reaches the secondary water channel.
However, in the alternate installation with the low curb crossing location, the slit can not be installed at the same position, and it is difficult to obtain a uniform drainage effect.

Means to solve the problem

In order to solve the above-mentioned problems, the L-shaped walkway road boundary block of the present invention has a sub waterway of inner diameter cross section which shifts center line from under curb and also straddles under apron It has become.
The side of the curb and the bottom of the gutter are spaced at the corner apron surface, and a slit is formed to form an opening of the secondary water channel to be contained.
The bottom of the apron ridge has an upper surface pavement stop by lowering a step and the main pavement stop, and the roadside zone for bicycle travel is an upper surface asphalt pavement which continues from the roadway to the upper surface pavement stop of the bottom at the apron lowering a step surface. .

  Apron pavement extends the top pavement of the roadway as it is, and as the cross slope approaches from 6% to 1.5% to 2% of the road shoulder, the water flow ability is reduced by the reduction of the L-shaped drainage section. Is also supplemented by the slit opening subchannel.

The curb of the L-shaped walking path boundary drainage block is a overhang structure in which the head with raised side walls of only one side of the lower subchannel covers the subchannel, and the slit opening is in the apron surface at the corner of the overhanging edge curb side and the footbed It is formed.
Even if the curb height is alternately installed along the roadside zone, the slit opening is on the apron surface and the drainage function to the secondary waterway does not change regardless of the curb height.

Effect of the invention

The top pavement is covered with the displacement and step of the main pavement end face due to the L-shaped walking road boundary block and the continuous laying joint of the walking road boundary block to form a roadside band suitable for running on a bicycle.
In addition, the same apron slope as the 1.5% to 2% cross slope of the roadway increases the safety of the bicycle.

  Drainage is good by the slit opening that is directly connected to the secondary water channel at the corner of the L-shaped drainage section heel bottom, drainage is good at the beginning of the rainfall, and safety is also enhanced in bicycle traffic.

  The slit opening has a uniform drainage effect continuously along the same line regardless of the height of the footway boundary curb along the road extension, and is also suitable for maintenance such as cleaning in the sub waterway.

  It is a notch slope view which shows the example of the L-shaped walkway road boundary drainage block for towns streets which was directly installed in the roadbed surface and formed for bicycle travel of asphalt pavement.   It is sectional drawing in alignment with the AA of FIG.   It is sectional drawing along the B-B line of FIG.   FIG. 3 is a perspective view of an L-shaped walkway road boundary drainage block in the embodiment of FIG. 2;   FIG. 6 is a perspective view of an L-shaped walkway road boundary drainage block in the embodiment of FIG. 3;   It is a notch slope view which shows the Example of the L-shaped walkway road boundary block which a slit interrupts.   It is a notch slope view which shows the Example for the crossing entry part of the L-shaped walkway boundary block which a slit interrupts.

The L-shaped walkway boundary drainage block forms a street with a 15 to 25 cm high curb stone and a triangular water passage cross-section with an apron width of 10 to 15 cm and a 2% slope toward the bottom of the brow. At the corner apron surface with the bottom of the apron, a slit opens toward the subchannel immediately below.
The paving portion of the roadway is approximately 20 cm to 25 cm thick and overhangs from the curb to form an L-shaped apron. The secondary water channel has a square, circular shape, etc., and has an inner diameter extending from under the curb to the L-shaped apron, and the slit directly connects to the secondary water channel without passing under the curb.
It is supplied with precast concrete with a length of 0.6m, 1m, 2m, etc. and will be laid on the foundation in a forward gradient construction along the road longitudinal gradient.
The crossing point to the sidewalk is an overhanging plate that has a low curb height and covers the upper part of the secondary water channel, and is an L-shaped block with a slit at the corner of the curb side and the apron heel bottom.
According to the L-shaped block of the present invention, the top paving is formed near the bottom of the apron, and the top pavement of the roadway is extended as the apron pavement as it is.

  The L-shaped block according to the present invention corresponds to the asphalt upper surface paving thickness, forms a parallel cut-down apron of about 5 cm, and forms an apron pavement up to the upper pave stop near the bottom of the heel. The required thickness of itself is adjusted at the bottom.

  When the upper pavement is permeable, permeate along the upper pavement stop which becomes the end of the apron pavement, the infiltration water flows from the water port across the weir drop into the secondary water channel and drains to the water by the road longitudinal slope Do.

  The secondary water channel is approximately 15 cm in inner width and 10 cm to 15 cm in inner height, and is directly connected with the L-shaped water flow cross section with an inner bottom height below the top paving stop to satisfy the drainage capacity of the street, but fulfills the drainage capacity of the street. The slit width is 1 cm to 2 cm for safety.

FIG. 1 shows an embodiment of a city L-shaped walkway road boundary drainage block installed directly on a roadbed surface and having an apron formed for traveling on asphalt pavement.
The embodiment of FIG. 1 is an L-shaped walkway road boundary drainage block (1) integrally formed with curbs and aprons, as shown in FIG. 2, FIG. 3, FIG. 7) It is a street facility with a sub-water channel (20) in the curb where the slit (12) directly connected to the apron pavement (10) is directly connected.
The apron (2) is an L-shaped block in which the upper pavement rest (7) is continuous in the length direction near the bottom of the foot and which is footed with the lowered apron (4). The side of the curb stone (3) and the apron A slit (12) is provided on the apron surface of the corner with (2) to form a directly connected secondary water passage (20).

The top pavement stop (7) has outlets (13) on both end faces as shown in FIG. 1, FIG. 4, FIG. 5, and FIG. 7. Seepage water in drainage pavement is L-shaped walkway road boundary drainage block every Flow into the secondary water passage (20) across the weir drop.
The slits (12) are continuous along the street (15) as shown in FIG. 1, FIG. 2, FIG. 4, and FIG. 5. In addition, as shown in FIG. 6, FIG. It is also possible that both slits in the upper surface of the fixed part may be continuous by a shallow groove having the same width and a depth of 1 cm to 1.5 cm. (Not shown).

  Fig. 7 The embodiment of Fig. 7 is a curb low-head type at a pedestrian walkway crossing point where slits are continuous with the general part as shown in Fig. 1 and the apron (2) has an upper surface pavement stop (7) near the street. An L-shaped walkway road boundary drainage block (1) is formed with a continuous apron (4) continuous in the length direction and through which a secondary water passage (20) integral with the curbs (3) penetrates.

The L-shaped walkway road boundary drainage block of the present invention can be used as well as the conventional L-shaped products for general distribution streets, and there is no restriction on its spread.
Furthermore, in production and supply, it distributes as cheaply as conventional road concrete products.

DESCRIPTION OF SYMBOLS 1 L-shaped walkway boundary drainage block 2 apron 3 curbs 4 lowered apron 5 L-shaped apron 6 main pavement retainer 7 top pavement retainer 8 main pavement 9 top pavement 10 apron pavement 11 drainage 12 slit 13 outlet 15 street 16 shoulder 17 sidewalk 20 side channel 25 fixed part 30 foundation material 31 mortar

Claims (1)

Precast concrete L to cover the steps and joints by apron pavement from the upper surface pavement of the roadway to the continuous bottom of the city and build up the asphalt road side band for bicycle running across the motor road shoulder and L shaped waterway cross section city apron It is a form walkway boundary drainage block,
An L-shaped block with the side edge at the side of the roadway as the main pavement stop and the secondary water channel directly connected to the slit opening at the bottom of the corner with the side of the curb An apron cut down on the apron with a thickness close to the bottom and apron cut parallel to the city apron,
The main paving is fixed by the main paving, and the apron paving is applied to the upper paving while maintaining the basic structure forming the street of the L-shaped water flow cross section, and the steepness of the construction gradient from the roadway to the apron There is no change, and at the same time, regardless of the change in height of curbs, slits are formed continuously or intermittently along the same line along the road and the drainage capacity of the road is compensated by secondary channels directly connected by the slits from the footbed. L-shaped walkway road boundary drainage block with secondary water passage characterized by constituting a road side zone.

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