JP5785049B2 - Side groove block - Google Patents

Description

  This application relates to a gutter suitable for drainage, such as a road surface of a precast concrete block laid on a road shoulder of a traveling lane such as an automobile road.

  It is known that when a road surface gets wet due to rain on a pavement surface such as an automobile road, the frictional resistance of tires and the like is reduced, and the driving safety is likely to be lowered. In particular, when rainwater accumulates on the road surface due to rain, hydroplaning is likely to occur. If a water film is formed between the tire and the asphalt road surface, and the tire does not grip the road surface, the steering wheel operation cannot be maintained, which may lead to a very dangerous situation for vehicle travel.

  Thus, on the vehicle side, a drainage groove is provided in the tire, and various attempts have been made for the material and groove shape of the tire. On the other hand, on the road side that is the driving lane of the vehicle, rainwater drainage is promoted on the road shoulder by gently inclining the paved roadbed in the crossing direction of the road, or drainage and drainage can be efficiently performed on the waterway laid on the road shoulder. Various attempts have been made to drain rainwater, such as making it difficult to collect rainwater on the road surface by using permeable asphalt for the surface layer.

  By the way, the side groove provided on the shoulder of the motorway such as an expressway or the median separation zone needs to prevent derailment due to the deviation of the traveling vehicle, so it is advantageous for taking in the road drainage. It is not easy to simply make a large intake. For example, if the upper part of the side groove is covered with a grating, there will be an accident in which the grating is repelled on a wheel that travels at high speed, so it must be securely fixed with bolts, etc. It was expensive. In view of this, in general, a large number of side grooves having a structure in which a water intake port having a long and narrow slit is provided in an upper part of a water channel of a concrete block having a circular or rectangular cross section. The size of the water channel inside the block is generally designed based on the average rainfall at the installation location.

  However, natural rainfall varies in how it falls, and even if rainwater can be drained from the gutter in the long run, it will not be able to catch up with the treatment if the instantaneous flow into the gutter exceeds the expected amount, and the rainwater will drain. The water will overflow from the gutter. In recent years, particularly torrential rains called guerrilla heavy rains have increased dramatically. If sudden rain falls in one place in a short time, the existing drainage collection facilities that have been laid so far are not able to adequately cope with the situation, and new measures are being taken.

  Also, for example, when the cross section is seen across the road, if the center is high, the rainfall will flow to the left and right shoulders, but if the median strip is greatly subsidized due to ground subsidence such as an earthquake In some cases, water tends to accumulate in the central part. Then, even if there is a water channel on the center side, it will easily exceed the discharge capacity in the case of torrential rain, etc., and it will be easy to overflow. Even if existing facilities are replaced with alternative equipment to cope with such land subsidence and changes after installation, it is necessary to respond without changing the existing road conditions as much as possible. Even if we recognize the need to take measures against this, there are situations where it is not possible to cope with it by simply replacing it with a gutter having a large capacity.

  As a side groove block conscious of such inflow of rainwater, the upper water channel and the lower water channel are provided in two stages, and when the amount of rain water flowing into the upper water channel increases, the rain water starts from the side groove formed on the upper side of the upper water channel. There is a side groove block that drains water by flowing into the lower water channel (see, for example, Patent Document 1 and Patent Document 2). The one described in Patent Document 1 is a two-stage water channel composed of a lower water channel and an upper water channel with a U-shaped cross section, and flows into the lower water channel from the vertical groove formed on the side upper end of the upper water channel. Is. The thing of patent document 2 is comprised of the lower water channel and the upper water channel of the U-shaped cross section of patent document 1 as an integral part, and from the upper part of the side of the upper water channel of patent document 1 to the lower water channel In Patent Document 2, the vertical groove is shaped like a horizontally long water channel, but when the upper water channel is about to overflow, a part of the upper water flow is allowed to escape from the horizontally long water channel to the lower water channel. The technical ideas of Patent Document 1 and Patent Document 2 are basically the same.

  However, although these Patent Documents 1 and 2 can be poured into the lower stage when the upper channel is almost full, the amount that can be poured into the lower channel is a narrow path connecting the upper and lower channels. It will be restricted by the amount of water per unit time that can be passed through the water channel. The amount of water flow per unit time in this water passage is substantially affected by the cross-sectional area of the water passage. However, inflowing rainwater is collected from the entire road surface such as a traveling lane, and may increase rapidly regardless of the amount of water flow. The size of these water passages is comparable to that of an upper slit for inflow in a conventional circular water channel or rectangular water channel. Therefore, in Patent Document 1 and Patent Document 2, after the upper water channel becomes full, the amount of escape to the water channel is a constant amount that is limited. There is no difference between waterways and rectangular waterways, and it is not enough to cope with a sudden inflow of rainwater such as guerrilla heavy rain, and it has a structure with insufficient capacity for a sudden increase in the amount of rainwater inflow. It was.

  In addition, it is useful to avoid the accumulation of rain water on the upper surface of the running road surface by adopting the water-permeable asphalt pavement, but the permeated water cannot permeate directly under the roadbed. Because of the relationship with the strength of permeable asphalt, if the permeable layer is limited to about 5 cm above the roadbed, or if water penetrates directly under the roadbed, it may lead to new problems such as lowering the strength of the entire road. Because it is from Therefore, in general, rainwater that has penetrated into the water permeable layer is drained into the internal water channel through a water passage hole that penetrates the upper side surface of the gutter at a predetermined interval from the throat to the upper side of the internal water channel. (For example, refer to Patent Document 3).

  However, even though the water has passed through the permeable layer, it is not filtered like groundwater and is accompanied by miscellaneous dirt, and a net, etc. is installed in advance at the mouth of the upper side to prevent the inflow of dust etc. For example, it is necessary to devise measures to prevent the water passage hole to the internal waterway from being blocked. However, since the mouth of the upper side surface of the gutter is buried in the ground in contact with the water permeable layer, when the trash is clogged, the passage remains blocked and it is not possible to physically remove only the trash by maintenance. It was not possible. Therefore, even when setting a gutter in combination with a water-permeable pavement, it is possible to appropriately guide rainwater to the water channel in the gutter and to ensure the ease of maintenance, There is a demand for a structure that does not obstruct the drainage of waterways for a long time.

  By the way, since the side groove block is made of concrete and is a heavy product, it is generally reduced in weight by thinly denting a part of its side face within a range that does not affect its strength. This reduces the work burden during transportation and laying work. When embedding, the periphery of the side groove is pressed and fixed with soil, but when part of the wall is thinned and the side is shaved, the soil must be pushed into the recessed portion and pressed. Such a rolling operation generally uses a large roller or rammer. However, in the improvement work that replaces the existing gutter with a water channel that is more resistant to heavy rain and has better drainage, it is not always possible to secure a sufficiently wide excavation space around the gutter. In order to reduce the amount of excavation as much as possible and shorten the construction period, it is desirable that the excavation space around the gutter be small. However, if the excavation width around the gutter is small due to the improvement work, it is possible that the earth and sand cannot be sufficiently backfilled in the thinned recessed portion, and the strength cannot be achieved without rolling. If the rolling pressure is insufficient, there may be troubles such as the side groove moving after laying. Therefore, reducing the excavation amount and shortening the construction period and securing the work space necessary for rolling or the like are in a trade-off relationship and are not always compatible.

JP 60-181438 A JP 2009-7889 A Design Registration No. 1234180

  The problem to be solved by the present invention is that a guerrilla heavy rain occurs in a side gutter on a road shoulder suitable for collecting and draining rainfall such as a paved road on a road surface of an automobile exclusive road or in a gutter for draining a road surface at a road intersection. It is to provide a road surface drainage structure such as a gutter having a water-spilling function that can flexibly cope with a sudden increase in flow rate due to heavy rain such as. And when combined with permeable pavement, it is a structure that allows drainage from the permeable layer to the waterway without clogging and is a side groove that does not hinder the ability of permeable pavement, and also on inclined surfaces By providing a gutter that contributes to shortening the construction period and reducing costs in gutter improvement work, etc., by making it possible to apply it and making the gutter structure less digging while not causing insufficient rolling pressure is there.

The first means of the present invention for solving the above-mentioned problems is a side groove block that can be used as a drainage channel by being arranged continuously in the longitudinal direction of a side groove provided on a shoulder or a central separation zone of an automobile-only road such as an expressway. The inner channel of the inner channel constituted by a hole opened in the inner longitudinal direction at the lower part of the side groove block and the shape of the cross section perpendicular to the longitudinal direction of the channel on the upper surface of the side groove block are arcuate. Provided with an opening portion provided as an upper water channel capable of being connected and drained in the longitudinal direction by providing a recess, and provided with an elongated water groove opening over the entire length in the longitudinal direction of the bottom of the recess of the upper water channel, and the water flow The side groove block is characterized in that the opening is communicated to the upper surface of the internal water channel as a structure in which a long material made of a filler having a high porosity of a three-dimensional stitch structure can be fitted into the opening of the groove.

  In other words, it is a side groove block having a two-stage water channel consisting of an upper water channel composed of a longitudinal depression in the upper berth and an inner water channel composed of a lower culvert. The lower channel is buried in the ground and forms a culvert. Since the bottom of the upper upper channel is open in the longitudinal direction and communicates with the upper part of the lower inner channel, when rainwater flows from the road surface, the rainwater traveling along the side surface of the upper upper channel is the most. It is a mechanism that guides it from the opening at the bottom through the water channel to the lower internal water channel.

  The rainwater that flows into the upper upper water channel in this way flows from the water ditches to the lower inner water channel, so that the normal inflow rainwater does not collect in the upper water channel and flow through the upper water channel, but in the lower inner water channel. It is drained by flowing. Since rainwater does not collect on the surface of the side groove, even if a vehicle tire rides on the upper waterway, it can be controlled without lifting and is safe. The rainwater guided to the internal water channel is then collected from the internal water channel via a rainwater trough, etc., and after further appropriate purification in an oil / water separation tank or the like, it is discharged downstream as treated water.

  When sudden rainwater flows into the upper waterway from the road surface due to heavy rain, etc., it will be discharged from the waterway to the lower internal waterway at any time, but if there is inflow exceeding the water flow rate of the waterway, It flows through the upper reservoir and drains to the rainwater basin downstream. In other words, normally, the upper water channel is emptied by discharging it from the lower internal water channel, and the rainwater is allowed to flow down into the upper water channel to drain water in response to a sudden short-term inflow of rainwater. Therefore, it has a structure that makes it difficult to overflow rainwater on the road surface.

Further, in this means, the recess of the upper water channel has an arc-shaped cross section perpendicular to the longitudinal direction of the upper water channel, and the opening of the water flow groove at the bottom of the recess is located at the lowermost part of the arc. It is said. The cross-sectional shape of the recess that becomes the water channel is a shape that opens at the bottom of the recess whose arc is a cross-section at the bottom and becomes a water channel and communicates with the lower internal water channel. In this form, rainwater is dropped from the bottom of the upper water channel into the internal water channel below and drained. Since a larger cross-sectional area can be secured by curving rather than a simple inclined surface, water can be stored in the upper water channel, so that it is more resistant to overflow. Moreover, since it is a curved shape, it can escape smoothly through an inclined curved surface even if a vehicle tire enters.

According to a second means of the present invention, the lower water channel which is an internal water channel has a channel gradient in the longitudinal direction of the side groove block, and the upper water channel has a channel gradient having an inclination angle different from the channel gradient of the lower water channel. The side groove block according to the first means .

  Ordinary rainwater is guided to a rainwater tank provided at an interval through an internal water channel provided in the lower part of the connected side groove block. The location of the rainwater tank is determined according to the terrain to some extent, so that the drainage can be smoothly connected to the rainwater tank by providing a channel gradient in the internal water channel and connecting the gutter block. It is important to encourage the drainage of water. However, if the adjacent side groove blocks are blocks having the same shape next to each other, the position of the water channel is not aligned at the joint. Therefore, the water channel depth position is shifted up and down at the end faces facing each other so that the installation height of the internal water channel inside the block continuously changes in accordance with the gradient in the longitudinal direction. In addition, the blocks are combined and used in a concatenated manner. Thereby, rainwater can be smoothly drained into a rainwater tank. Naturally, since water flows from high to low, the bottom surface of the internal water channel having a channel gradient in the longitudinal direction is positioned lower in the side groove block as it approaches the rainwater tank.

  However, the road slope of the road surface where the gutter block is installed depends on the natural topography, and does not necessarily match the slope of the channel slope provided in the internal waterway toward the rainwater basin. Therefore, in this means, it is assumed that the channel gradients of the internal water channel and the upper water channel can have different inclination angles. For example, while the channel gradient of the upper channel is adapted to the slope of the road surface, the channel gradient provided in the inner channel is designed to maintain a smooth gradient toward the rainwater basin, giving priority to drainage efficiency. To do.

  Rainwater that flows into the upper channel is dripping from the water channel to the lower inner channel at any time, so there are limited situations where water collected in the upper channel is drained and drained. When a large amount of rainwater flows in, the upper water channel itself can drain the rainwater according to the gradient while serving as a buffer for storing temporary rainwater. At that time, if the channel gradient of the upper channel is gentler than the channel gradient of the inner channel, there will be a time difference in the amount of rainwater flowing into the rainwater basin, and the concentration of inflow will be slightly relaxed. This makes it easier to avoid situations where rainwater concentrates and overflows.

The third means of the present invention is characterized in that the lower channel has a channel gradient in the longitudinal direction of the side groove block, and the upper channel has a channel gradient opposite to the channel gradient of the lower channel. The side groove block according to the first or second means . According to this means, when connecting the side groove block with the inclination angle of the channel gradient in the longitudinal direction of the internal water channel and the inclination angle of the channel gradient in the longitudinal direction of the upper channel in the opposite direction, for example, the internal channel side is drained to the right. When done, the upper waterway side will be drained to the left.

  In the case of local heavy rain, it is not rare that a large difference in rainfall occurs due to a difference of a distance of only a few tens of meters, and the instantaneous change in rainfall varies greatly depending on the location. Therefore, if the discharge destination of the upper water channel and the discharge destination of the lower water channel are in opposite directions, the inflowing rainwater can be dispersed into different rainwater troughs. If rainwater collected from the upper and inner waterways is led to separate rainwater troughs, it will be easier to avoid momentary flooding in a short time because it will avoid a single point of rainwater concentration. It is.

  In this means, in order to make the flow channel gradient of the flow of the internal water channel and the upper water channel reverse, the direction of the flow channel gradient is reversed, so that the left and right ends of the connected side groove blocks The provided rain basin is, for example, a rain basin that receives water from the right internal water channel and water from the left upper water channel. As a result, the water in the upper water channel and the water in the lower water channel are distributed to the left and right rainwater troughs, so that the water can be appropriately dispersed and drained without being concentrated in one place. Therefore, it is easier to avoid troubles such as instantaneous overflow due to sudden fluctuations at the water collection destination.

In this third means, the internal water channel has a channel gradient inclined toward the direction of the rainwater basin, and the upper water channel has a channel gradient inclined in the opposite direction. Even when there is no rainwater tank or the like for collecting water at the tip of the upper waterway, the water in the upper waterway can be drained by gradually flowing down to the internal waterway through the water channel. Therefore, local torrential rain is collected from the internal waterway to the rainwater tank and drained by gradually flowing down the water channel while flowing in the reverse direction from the rainwater tank at the top. Since it is possible to earn time by flowing in the opposite direction once, the upper waterway will stagnate the rainwater, avoiding the concentration of rainwater that exceeds the processing capacity at the drainage basin etc. It becomes difficult to overflow.

According to a fourth means of the present invention, the upper water channel is provided with a cut groove having a depth corresponding to the thickness of the permeable pavement portion of the adjacent road surface from the upper end of the side wall block in the longitudinal direction to the upper end of the inner wall of the upper water channel. The side groove block according to any one of the first to third means . This means is a contrivance when the gutter block of the present invention is disposed at a location adjacent to the roadbed of the water-permeable pavement.

  In the water-permeable pavement of the adjacent road surface, the water-permeable layer is generally provided in the surface layer part. Conventionally, water has been drained from the lowermost surface side of the surface layer of the water-permeable pavement to the internal water channel of the side groove block such as the road shoulder. In this means, in order to allow rainwater that permeates into the surface layer of the adjacent permeable pavement to be drained to the upper water channel, a cut groove is appropriately disposed in a part of the upper plane of the side groove block, and the side edge of the permeable layer is arranged. The rainwater can be led into the upper channel from the groove. As in the present invention, by providing a cut groove in the upper part of the side groove block in contact with the water permeable layer, clogging or the like due to embedding is less likely to occur, and a water collecting channel that is easy to maintain can be provided. In addition, you may use suitably the combination of the idea of the notch groove of this means, and the water flow structure which guides rainwater directly from a water-permeable layer lower surface to an internal water channel.

  When this means is combined with permeable pavement in this way, it takes time for a part of the rainfall to soak into the entire road surface and flow into the gutters, so a time difference is likely to occur in the inflow of rainwater. Since it becomes easier to avoid the drainage treatment capacity of the gutter etc. reaching the limit due to momentary local heavy rain, it becomes difficult to overflow, leading to a dangerous situation such as rainwater collecting on the road surface than before Easier to avoid.

According to a fifth means of the present invention, in any one of the first to fourth means , the recess of the upper water channel has a left-right asymmetric curved shape in a cross section perpendicular to the longitudinal direction of the upper water channel. This is a side groove block. In this configuration, the cross-sectional shape of the depression of the upper water channel is not the right and left target, either the right or left is a curved shape with a large curvature, and the deepest part corresponding to the bottom of the upper water channel is also According to the curve, it is biased to the left or right. These devices not only guide the inflowing water smoothly into the internal waterway below, but also make it easier for vehicles traveling on the road to visually recognize and grasp the boundary with the side groove and road shoulder both physically and stereoscopically. It becomes.

  Moreover, when the deepest part is provided at a position far from the road side of the adjacent road surface, a so-called curb-like function of the road shoulder can be achieved. For example, from the road side of the installation road surface to the water flow groove portion that opens to the deepest part, the curve gradually becomes deep while curving, while the road shoulder side has a shape that rises suddenly at a short distance. Then, even if the vehicle accidentally enters from the road, the tire of the vehicle is gently pushed back to the road side at a sudden rise. Therefore, since it becomes easier for the driver to notice abnormally before a vehicle that has entered unintentionally, such as falling asleep, crosses the upper waterway, this also contributes to reducing serious accidents.

Sixth means of the present invention, the lower internal waterways, for gutter according to the first to fifth any means, characterized in that it is formed by a rectangular waterways the cross-sectional shape becomes a horizontally elongated rectangular It is a block. In this means, the lower internal water channel is a rectangular water channel having a rectangular shape in cross section, and therefore the height of the internal water channel when attempting to ensure the water flow rate of the same cross-sectional area when compared to a circular internal water channel. Can be lower. If the height of the internal water channel is lowered, the depth of excavating the ground for laying concrete blocks can be reduced accordingly. Then, the work amount and work time required for excavation for laying can be greatly shortened, which in turn contributes to cost reduction. In particular, in construction on highways, etc., it is required to proceed with construction promptly while restricting the travel of vehicles that pass through. If the time that hinders travel can be shortened, it is a time zone where traffic is low, such as night construction. You can choose to work longer distances as appropriate. Therefore, it is extremely useful, such as a more flexible construction plan.

  In addition, as a countermeasure against the increase in torrential rain and guerrilla heavy rain, the present invention provides a place where a drainage channel has not been laid in the road surface only with a curb block in the past, or a side ditch that has a poor drainage capacity in a conventional waterway. It can be easily applied in situations where replacement is performed. This is because a rectangular channel can reduce the depth of excavation or save space, and can be adequately applied to improvement work or the like in a place with a small degree of design freedom.

According to a seventh means of the present invention, the gutter block has a longitudinal outer wall in which a part of the lower portion of the longitudinal outer wall is thinned by notching to the inner water channel side, and at least one of the notches has the A foamed plastic resin molded body having the same shape as the notch is fitted to form an outer wall surface that is flush with the upper wall surface of the longitudinal outer wall and the outer surface of the foamed plastic resin molded body. 8. The side groove block according to any one of the first to seventh aspects, wherein the outer wall surface is the outer wall in the longitudinal direction of the side groove block. This means that when a part of the side groove block is cut out of the outer wall within a range that does not impair the strength for weight reduction, the foamed part is made of hard foam such as a polystyrene resin having a shape corresponding to the cutout part. By applying the plastic, the outer side wall in the longitudinal direction is flush, so that the recessed portion is not provided, thereby improving the rolling pressure.

  So far, the part that has been reduced in weight by reducing the thickness of the concrete has a three-dimensional shape, so even if the earth and sand are poured from the upper part, the earth and sand will not reach the recessed part enough and gaps may be generated. there were. Then, even if both sides of the side groove are rolled from above, the force escapes due to the gap, and inconvenience such as insufficient rolling pressure occurs. To prevent such rolling shortage, it can be considered to excavate both sides with a margin. However, such as in the vicinity of the highway median strip, there is a problem in situations where there is no room for excavation to the side. In addition, in improvement work and the like, such design flexibility is particularly poor, and the excavation range must be limited.

  With this measure, the foamed plastic resin is inserted into the notch on the outer wall in advance and then laid. Therefore, the earth and sand can be excavated without any gaps by simply putting the earth and sand from above and rolling it with a rammer or the like. The location can be filled, and the effectiveness of rolling can be easily obtained. Since the rolling pressure does not become insufficient, the gutter block will not be distorted or tilted at a later date, and the surrounding structures, such as guard rails and laying objects such as fences, will be tilted, and the foundation will be easily shaken, resulting in insufficient strength. You can also prevent falling.

  In addition, materials, such as a polystyrene, a polyurethane, polyethylene, a polypropylene, can be used suitably for foamed plastic resin. Rigid foamed resin having sufficient strength to support the side groove block between earth and sand and concrete shall be used. Since it is buried in the soil and used, it will retain its strength for a long time without being altered or decomposed by ultraviolet rays of direct sunlight, etc., but those with high water resistance and durability are suitable. .

  It can be suspended with a crane, etc. with light foam plastic resin fitted, and buried in the excavated hole, so that installation work can be carried out in a short time without losing workability due to thinning and weight reduction. Can do.

  When the side groove block of the present invention is applied, rainwater due to normal rainfall is led from the upper water channel to the internal water channel through the water channel and drained downstream from the internal water channel. It is possible to keep the state where the water does not accumulate for a long time. Even in the case of sudden rainwater inflow such as torrential rain, it does not immediately overflow into the surroundings, but in addition to draining from the water channel to the internal waterway, rainwater is also stored and stagnated in the upper waterway Can do. Moreover, since the upper water channel itself can function as a water channel for draining downstream, drainage can also be performed from the upper water channel. Therefore, a large amount of rainwater can be drained without causing rainwater to overflow on the road surface.

Moreover, in the 1st means of this invention, since a cross section of the upper water channel is curving in circular arc shape, rainwater can be stored in a large amount in the upper water channel, and it becomes difficult to overflow.

In the second means of the present invention, since the slopes of the channel gradients of the upper water channel and the internal water channel can be made different, it is possible to increase the processing time for draining while avoiding a large inflow to the downstream rainwater basin. it can. In other words, for internal channels with strong channel gradients, rainwater can be drained quickly while draining slowly while accumulating rainwater in the upper channel by grading the channel gradient of the upper channel. The drainage does not flow in at a stroke, and by weakening a part of the flow and gaining time, it is possible to avoid that the rainwater concentrates and overflows locally.

In the third means of the present invention, since the channel gradient of the upper channel and the inner channel is opposite, the downstream direction of each channel is reversed, and rainwater is drained in different directions, or temporarily Since it will be diverted by the upper waterway, it will not be possible to concentrate on one rainwater basin at a stretch. Become.

In the fourth means of the present invention, when combined with a permeable paved road, rainwater from the surface permeable layer can be guided from the cut groove to the upper waterway, and clogging or the like is difficult to occur. It is possible to make the water collection channel easy to maintain.

According to the fifth means of the present invention, since the cross-sectional shape of the depression of the upper water channel can be asymmetrical, it is possible to combine a gently curved slope and a steeply curved surface, and the vehicle that has entered recognizes the ride This makes it easier to control the vehicle that has entered the vehicle.

According to the sixth means of the present invention, the depth of the side groove block can be made shallower than the circular water channel by making the internal water channel into a water channel having a rectangular cross section. Therefore, the amount of excavation and construction work can be reduced, and the cost and time for laying can also be reduced.

According to the seventh means of the present invention, since the light foamed plastic resin is fitted into the thinned portion for weight reduction, the work can be performed in a light state, and thus workability can be maintained. In addition, since the rolling pressure is unlikely to be insufficient, the amount of excavation and the width of excavation can be reduced, and the working time can be shortened.

It is a perspective view of one side groove block of an embodiment of the invention. It is a perspective view of the block for a side groove suitable for the water-permeable paved road which is other embodiment of this invention. It is a perspective view which shows a mode that the foamed plastic resin which is other embodiment of this invention is applied. It is a schematic diagram which shows the difference in the rolling pressure by the presence or absence of foamed plastic resin. It is a figure which shows the difference in the total height and excavation depth when the cross-sectional external shape of the internal water channel of the same cross-sectional area is made into a rectangle or a circle. It is sectional drawing in case the cross-sectional shape of the upper water channel which is one of the other embodiment of this invention consists of a left-right asymmetrical arc shape. It is a figure which shows arrangement | positioning of the sealing material of the connection surface of the block for side grooves of this invention. It is a perspective view of the filler of the solid stitch structure suitable for this invention. It is a figure which shows that the filler of a solid stitch structure is applied to the water flow groove of the block for side grooves of this invention. It is explanatory drawing in case the flow-path gradient of an upper water channel and an internal water channel is reverse direction which is one of the other embodiments of this invention.

  Embodiments of the present invention will be described below with appropriate drawings. First, the side groove block 1 of the present invention can be applied with a general concrete block in which reinforcing bars and the like are arranged, and can be carried out without taking any special material or manufacturing method. For example, if the precast concrete side groove block 1 is produced by pouring concrete into the formwork at the factory, the present invention product can be produced in large quantities at the factory, and it can be transported to the construction site and installed at once. Work time can be shortened. Of course, it is possible to obtain the side groove block 1 by pouring and solidifying the concrete on site, so that it can flexibly cope with complicated terrain and conditions. Since this article has a high drainage capacity and is difficult to overflow, it can be suitably applied to a side groove on the center separation zone side of the road anti-intersection other than the road shoulder.

  FIG. 1 shows one aspect of an embodiment of the present invention. The side groove block 1 has, for example, a total length of 1 m, a total width of 0.9 m, and a total height of about 0.65 m. The cross section of the internal water channel 4 in the underdrain is about 50 cm wide, about 25 cm high, The cross-section arc-shaped water channel of the upper water channel 2 is a circular arc having a width of about 35 cm and a vertical width of about 10 cm. The cross section is wedge-shaped. Although not shown, it is a concrete block having a general structure in which rebars with a diameter of about 1 cm are arranged at intervals of about 20 to 30 centimeters. Cast into a precast concrete block.

  The side groove block 1 can be formed by connecting a large number of them so that the internal water channel 4 and the upper water channel 2 can be formed in the longitudinal direction, respectively, and flows into a water collecting port such as a rainwater tank disposed downstream. Water is drained by directing rainwater. Rainwater dredging accumulates sediment such as earth and sand to prevent the drainage efficiency in the waterway from decreasing, and collects water from the rainfed drainage to a wastewater treatment facility such as an oil-water separation tank installed further downstream. Will be discharged.

In the case of the side groove block of FIG. 1 having the above size, the cross-sectional area of each of the internal water channel 4 and the upper water channel 2 is 0.119 m ^{2 for the} rectangular internal water channel 4, and the cross-sectional area of the semicircular water channel of the upper water channel 2 is 0.073 m ² . The upper surface of the side groove block having a normal water channel is intended to flow inside without storing water, and therefore does not store water on the upper water channel side. On the other hand, the upper water channel of the present invention is a water channel that is recessed in an arc shape, and is a water channel having a cross-sectional area that is not less than that of the internal water channel. In the case of a side groove block having a total length of 1 m, it is calculated that up to 73 liters of rainwater can be stored in the upper water channel. Therefore, even if rainwater flows in, it has the potential to sufficiently function as a buffer that does not easily overflow, and has a high water retention function that temporarily retains rainwater in the upper water channel.

Of course, the internal water channel and the upper water channel provided in the gutter block 1 are each provided with a channel gradient so that rainwater can be drained downstream, and any water channel can be sequentially drained downstream. it can. The larger the channel gradient, the higher the drainage speed and the greater the amount of drainage per hour.
For example, in the case of the side gutter block of the above-mentioned size, the drainage capacity of the internal water channel is 1% gradient with a flow rate of about 1.91 m / Sec, the flow rate is about 227 liters / Sec, and the gradient is 3% with a flow rate of 3%. .31 m / Sec, the flow rate is about 394 liters / Sec. For the upper channel, assuming that the deepest part is not open, the flow rate is 0.95 m / Sec with a gradient of 0.4%, the flow rate is 69 liters / Sec, and the flow rate is 1.47 m / Sec with a gradient of 1%. The flow rate is about 107 liters / Sec, a gradient of 3% and the flow rate is 2.54 m / Sec, 185 liters / Sec. The channel gradient can be selected from 0.1% to 10%, for example, according to the inclination of the installation location, and according to the discharge target according to the expected amount of rainwater inflow per hour at the installation location. It is also possible to use a flow path gradient.

  For installation of the side gutter block 1, the side gutter is excavated with a depth sufficient to embed the surroundings of the installation location, laid with gravel 14, etc. and suspended on the mortar 13 with a crane or the like. The blocks 1 and 1 are arranged so as to be sequentially connected. After the connection, the earth and sand are backfilled in the surrounding voids, and the backfilled soil is rolled from above with a rammer and firmly fixed. When connecting the side groove blocks 1 and 1 connected to each other, it is desirable to seal between the blocks using a sealing material 23 in order to prevent water leakage between the end surfaces that contact each other. For example, as the sealing material 23, a plate material made of ethylene-propylene rubber (EPDM) that expands with water, for example, having a width of 15 mm and a thickness of several millimeters, can be used. In the case of the side groove block for the water-permeable pavement of the other embodiment below the internal water channel 4, the sealing material 23 is further arranged below the cut groove 5. Moreover, the groove | channel slightly depressed in the concrete of the part in which the sealing material 23 fits may be formed, and it may be easy to arrange | position the sealing material 23 appropriately.

  Further, the side groove blocks 1 and 1 connected to each other may be fastened and fixed with bolts to the connecting insert holes 12 on the upper side surface of the side groove block using a metal plate of the connecting plate.

  Since the internal water channel 4 becomes a water channel that rainwater first flows in and drains downstream, the cross-sectional area and the channel gradient are assumed to have a drainage capacity suitable for the application location so that continuous drainage can be performed sufficiently. It is desirable to keep it. The cross-sectional shape of the internal water channel 4 is mainly circular or rectangular, but may be a polygon such as a pentagon, hexagon, or octagon.

  FIG. 5 is a diagram in which the cross-sectional shape of the internal water channel is a circular shape and a rectangular shape, and the circular and rectangular cross-sectional areas are the same. When the cross-sectional shape of the internal water channel 4 is rectangular, it can have a flat shape as compared with the circular water channel shown in the right of FIG. There is an advantage that it can be made compact by the height shown. In addition, since the rectangle here is from the viewpoint of making such a flat shape, even if it is a shape in which the central part of the bottom surface is slightly lower or the four corners are chamfered, the rectangle referred to in the present invention is used. included. If the cross section of the internal water channel 4 is circular and rectangular, and the cross-sectional area of the water channel is the same, as shown in FIG. In order to bury this, as shown by the arrow at 20, it is necessary to dig deeper and more. If the amount of excavation increases, it takes more work time, which greatly affects the progress of improvement work and the like. Therefore, it is preferable to use a flat rectangular internal water channel with the same cross-sectional area.

  By the way, the water flow groove 3 through which rainwater flows from the upper water channel 2 to the internal water channel 4 is a narrow groove having a width of about 5 to 8 cm. Therefore, grating or the like may be fitted in order to secure an appropriate flow amount while reducing the frequency of maintenance due to clogged fallen leaves and dust. Furthermore, it is preferable to fit a filler 21 made of a plastic resin filament having a three-dimensional stitch structure with a high porosity (for example, Hemimalon made of Shinko nylon). FIG. 8 shows a schematic diagram of the filler 21 having a three-dimensional stitch structure.

  In the case of grating, bolts and the like are necessary for fixing, and it takes much time for installation and maintenance. On the other hand, as shown in FIG. 9, if the filler 21 is made of a plastic resin filament having a three-dimensional stitch structure rich in elasticity, it can be firmly fixed by elasticity by being pushed into the water passage groove 3 from above. For example, if a rectangular parallelepiped filling material 21 having a total length of 1 m of 6.5 cm square is applied to a groove width of 6 cm of the water flow groove and is inserted into the water flow groove 3 from above, the water flow groove 3 is inserted. Can be firmly fixed inside without screws.

  The filler 21 having such a three-dimensional stitch structure has a structure in which a wire having a large gap that can secure a water passage rate of about 85 to 95% is entangled, so that it is blocked by dust and fallen leaves compared to the grating. It is rare to end up. Since the filler 21 has a three-dimensional stitch structure in which fine filaments are intricately intertwined and melted and bonded to each other at the contact point, the stitch is a gap of about 5 mm to 15 mm and not only has elasticity, This is because it is easy to supplement fine trash. Since the filler 21 having a three-dimensional stitch structure is easy to maintain and is three-dimensional and hardly clogged, the maintenance frequency can be reduced. As in the present invention, for the purpose of preventing flooding to the road surface due to sudden rain, it is useful that the drainage performance is not lowered easily by falling leaves or the like because the drainage performance is continuously secured.

Further, a filler 21 made of plastic resin filaments having a three-dimensional stitch structure corresponding to the size of the groove is also fitted into the cut groove 5 from the end 15 of the permeable paved road to the upper water channel 2 according to claim 4 . But you can. Since the installation of the filler 21 makes it difficult for clogging of dust and good water permeability can be secured over a long period of time, it contributes to prevention of overflow.

By the way, it is desirable to reduce the thickness of the side groove in the longitudinal direction of the side groove block 1 appropriately to reduce the weight. For example, when thinning the left and right side surfaces in the longitudinal direction over a width of 75 cm, a height of 40 cm, and a depth of 9 cm, assuming that the apparent density of concrete is 2300 kg / m ³ , the total weight of the thin portions 10 and 10 on the left and right is about 125 kg. It becomes. Although it can be used as it is, as shown in FIG. 4 (a), if a sufficient area cannot be secured in the surrounding excavation site, the thinned portion cannot be sufficiently backfilled with soil, and the backfill soil A gap 22 is formed between the thin portion 10 and the thin portion 10, and the rolling pressure 18 by a rammer or the like from above cannot be sufficiently achieved.

Therefore, as shown in FIG. 3, inadequate rolling pressure can be avoided by fitting a hard foamed polystyrene resin of the same size of the foamed plastic resin 11 into the thinned portion 10 that is recessed by the thinning. The left and right foamed plastic resins 11 can be easily finished into a shape that matches the thinned shape by appropriately cutting the plate material. In the case of a hard polystyrene foam with a density of 20 kg / m ³ , the total weight of the left and right foamed polystyrene is about 1 kg. Therefore, even if it is suspended while the foamed polystyrene is fitted, the workability is impaired. It will never happen. Since the rolling pressure 18 to the backfill 17 is only applied from above by a rammer or the like, when the foamed plastic resin 11 is applied, as shown in FIG. Since 22 is closed in advance, the force of the rolling force 18 does not escape to the gap due to the left and right thin walls like the gap 22 in FIG. 4A. Therefore, sufficient rolling work by the rolling pressure 18 can be performed more efficiently. In addition, since it is not necessary to excavate the surrounding area greatly in order to refill the gap 22 with the earth and sand, the width of the excavation site for installation and improvement work can be reduced, and the amount of work is greatly reduced.

  The side groove block 1 of the present invention can also be used in combination with an existing rolled gutter (a drain groove recessed on an arc). That is, instead of exchanging the entire side gutter over the entire road, it is possible to efficiently drain the water stored on the rolled gutter by partially improving the gutter block according to the present invention around the rainwater gutter. Can be. For example, in the improvement of the drainage ditch of the rolled gutter where the rain gutters were arranged every 30 meters, the rain gutter can be improved by replacing each 5 m on both sides of the rain gutter with the side gutter block of the present invention. It is possible to provide a function of stagnant water by combining the efficient drainage and the upper waterway and the internal waterway.

  Furthermore, since the curved channel of the rolled gutter and the upper channel of the present invention can have a circular cross section having the same curvature, the continuous channel can be connected without a step and a smooth flow can be achieved. Moreover, since the rain water of the rolled gutter part flows down from the upper water channel to the internal water channel through the water channel, the rain water does not accumulate for a long time in the curved water channel of the rolled gutter.

As another embodiment of the present invention, a description will be given of a case where the channel gradients of the internal water channel and the upper water channel are different as described in the third means of the present invention. The side groove block according to the present invention is not only drainage by the internal water channel, but the upper water channel serves for storage, stagnation and drainage.
Hereinafter, the side groove block 1 will be described below on the assumption that the mouth of the internal water channel 4 and the upper water channel 2 is observed from the side surface side opened to the left and right. For example, it is assumed that the inclination angle of the channel gradient 6 of the internal water channel 4 is lowered by 1% to the right. At this time, the channel gradient 7 of the upper water channel is an inclination angle that is 0.4% lower to the right. Then, compared with the drainage of rain water in the internal water channel 4, the drainage on the upper water channel 2 side becomes gentle. Even when a large amount of rainwater drained from the internal waterway 4 is concentrated in the downstream rainwater basin due to sudden rain, the rainwater in the upper waterway 2 is drained relatively slowly, and some of the water gradually passes through. It will flow down from the groove 3 to the internal water channel 4. For example, in the upper channel with a 0.4% channel gradient, the flow rate is 0.95 m / Sec, while the flow rate of the internal channel with 1% channel gradient is about 1.91 m / Sec, which is almost double. It is flowing at a speed. Thus, even if the upper channel is gentle, the upper channel has the ability to store about 70 liters of water, so it does not overflow immediately when it becomes a gentle flow, but rather it flows slowly. It is possible to avoid the fact that the drainage is concentrated in the rainwater basin etc. downstream and overflows without being treated.

  FIG. 10 shows still another embodiment in which the left and right end surfaces and the center of the side groove block are centered when the channel gradient 7 of the upper channel 2 and the channel gradient 6 of the inner channel 4 are inclined in the opposite direction. Sectional drawing divided | segmented vertically from is shown. For example, in the upper water channel 2, even when the channel gradient 7 is inclined 1% to the left according to the slope gradient, the channel gradient 6 of the internal channel 4 is inclined 1% to the lower right. Can be. A rain basin can be provided on the left downstream of the upper water channel, so that the rain water in the upper water channel can be drained to the left and the water in the internal water channel can be drained to the rain water basin on the right side. From each storm drain, it flows down to the road surface drainage treatment facility provided downstream.

Moreover, it can also be drained rightward in an internal channel by guiding the water of an upper channel once to the left, and making it flow down from the water flow channel 3 sequentially. In this case, the upper water channel performs the function of storing and stagnating the rainwater that is once drained to the right to bypass the water leftward.
For example, it is assumed that rainwater is gradually led from the water channel 3 to the internal water channel 4 while flowing to the left in the upper water channel 2 and flows to the right in the internal water channel 4. In addition, for example, the left rainwater basin is connected to the left end of the upper waterway 2 that inclines to the left and allows rainwater to flow, so that the water that entered the rainwater basin is now returned to the lower waterway 4 in the right direction. In that case, the rainwater detoured to the right-side rainwater tank connected to the right-hand end is finally discharged.
The state where water is flowing downstream while being stored in the upper water channel is a case where more rainwater flows from the water flow channel 3 to the internal water channel, and the flow rate of the water flow channel 3 is less It ’s a bottleneck. At this time, if the water in the upper water channel is drained in the same direction as the internal water channel, there is a higher risk of overflowing downstream, but by guiding the upper water channel in the opposite direction, until it flows down from the water channel 3 Since the flow down to the water flow channel 3 is dispersed, the amount of inflow is averaged as a whole, and it is easy to avoid sudden overflow.

  Further, as another embodiment of the present invention, a preferred embodiment when applied to a permeable paved road will be described. FIG. 2 shows a cut groove 5 that can guide rainwater from the surface layer portion of the water-permeable pavement to the upper water channel 2 at both ends of the upper end portion of the connecting side groove block 1. The depth of the cut groove 5 is a depth corresponding to the thickness of the surface layer of the road surface, which is a rainwater infiltration portion of the road of the permeable pavement. Since the surface layer of the water-permeable pavement is about 5 cm, the cutting depth is about 5 cm as well. The groove width of the cut groove is also about 5 cm. A notch groove having a width of 10 cm is provided every 1 m with the connected blocks. However, depending on the road area, the number and position of the cut grooves are not limited to the upper end, and may be added as appropriate. Further, in addition to the cut groove, a drainage groove that conducts water directly from the permeation layer on the road surface to the internal water channel can be used in combination.

Since the cut groove 5 is open to the outside, maintenance is easy, but in preparation for the inflow of dust etc., the filler 21 made of plastic resin filaments with a three-dimensional stitch structure is cut to an appropriate size, It may be fitted in the cut groove 5.
Further, as shown in FIG. 7, a sealing material 23 may be applied to the lower portion of the cut groove 5 to prevent water leakage when connecting the side groove blocks connected to each other. An EPDM plate-like seal having a width of about 5 cm and a width of about 15 cm is provided in a lower groove of a few millimeters slightly shallower than the thickness of the seal member 23 just below the cut groove 5 on the end face of the one side groove block 1 to be connected. Agent 23 is inserted.

  Moreover, as shown in FIG. 6, as another embodiment of this invention, the cross-sectional shape of the upper water channel 2 can be made into a left-right asymmetric curved shape. Although the depth is about 10 cm, since it is a left-right asymmetric cross section, the deepest part of the upper water channel 2 is located around 30 cm from the right out of the total width of 90 cm in FIG. The opening of the water flow groove 3 moves to the right instead of the center of the side groove block and opens.

  In the case of the side groove block 1 in FIG. 6, a traveling road surface can be laid on the left side of the side groove block, and the deepest portion can be arranged on the side far from the road side. By doing so, the possibility that the vehicle travels on the water stored in the upper water channel 2 can be slightly reduced. In addition, if the left and right asymmetrical irregular curved cross section is used, the curved surface on the right side can rise suddenly like a curb. Then, the tire of the vehicle that has entered the upper water channel 2 does not easily get over the sharply curved portion, and the vehicle is pushed back in the original direction by the curve, so that it is easy to prevent the vehicle from departing from the course. In addition, if the upper water channel 2 is round and recessed in the left and right objects, it can be considered that the tire of the vehicle fits like a dewheel, but in the block of FIG. Since it is a gentle curve, it is easy to escape to the road side.

DESCRIPTION OF SYMBOLS 1 Block for side groove 2 Upper water channel 3 Water channel 4 Internal water channel 5 Cut groove 6 Channel gradient (of internal channel) 7 Channel gradient (of upper channel) 10 Thin portion 11 Foamed plastic resin 12 Connecting insert hole 13 Mortar 14 Gravel 15 Surface of paved road 16 Subbase 17 Backfill 18 Rolling pressure 19 Difference in block height 20 Difference in excavation height 21 Filler 22 Clearance 23 Sealing material

Claims (7)

A side groove block that can be used as a drainage channel by being continuously arranged in the longitudinal direction of the side groove provided on the shoulder of the automobile exclusive road such as an expressway or the central separation zone, and is opened in the inner longitudinal direction at the lower part of the side groove block An open channel part of an internal water channel constituted by the formed holes, and an upper water channel that can be drained in the longitudinal direction by providing a recess having an arc shape in the cross section perpendicular to the longitudinal direction of the water channel on the upper surface of the side groove block. Provided with a portion having an elongated water groove opening over the entire length in the longitudinal direction of the bottom of the recess of the upper water channel, and the water groove having a high porosity with a three-dimensional stitch structure. A side groove block characterized in that the opening is communicated to the upper surface of the internal water channel as a structure into which a long material can be fitted. Lower waterway is an internal waterway is provided with a longitudinally passage gradient gutter block, the upper water passage, characterized in that it comprises a flow path slope inclination angle different from the flow path slope of the lower waterway, wherein Item 2. The groove for a side groove according to Item 1 . Lower waterway is an internal waterway is provided with a longitudinally passage gradient gutter block, the upper water passage, characterized in that it comprises a flow path slope in the opposite direction the flow path slope of the lower waterway, claim The side groove block according to 1 or 2 . The top water channel, claim, characterized in that it comprises a cut groove having a depth corresponding to the thickness of the porous pavement portions of adjacent road from the longitudinal outer walls the upper end of the gutter block over the inner wall the upper end of the upper water passage 1 The block for gutters of any one of -3. 5. The side groove block according to claim 1 , wherein the depression of the upper water channel has a curved shape that is asymmetrical to the left and right in a cross section perpendicular to the longitudinal direction of the upper water channel. The side channel block according to any one of claims 1 to 5 , wherein the lower channel which is an internal channel is formed by a rectangular channel whose cross-sectional shape is a horizontally long rectangle. The side groove block has a longitudinal outer wall in which a part of the lower part of the outer wall in the longitudinal direction is thinned by notching to the inner water channel side, and foamed plastic having the same shape as the notched shape in at least one of the notches A resin molded body is fitted to form an outer wall surface that is flush with an upper wall surface of the outer wall in the longitudinal direction and an outer surface of the foamed plastic resin molded body, and the flush outer wall surface is formed on the side groove block. The side groove block according to any one of claims 1 to 6 , wherein the side groove block is a longitudinal outer wall.

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