JP4088542B2 - Structure of L-type retaining wall block with protective fence - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of an L-type retaining wall block with a protective fence that is compatible with a collision load. Specifically, by making it possible to install a protective fence integrally using an L-type retaining wall block for earth pressure using special parts, the protection that can be achieved with an L-type retaining wall block with a collision load reaction type protective fence. It relates to the structure of an L-shaped retaining wall block with a fence.
[0002]
[Prior art]
In recent years, an L-shaped retaining wall block having an L-shaped cross section has been used to construct retaining walls such as roads at an early stage and at a low cost. This is a precast concrete molded product having a retaining part embedded in the soil and a standing part extending upward from one end of this retaining part to constitute a retaining wall part, and the cross section is L-shaped. is there. By arranging these L-shaped retaining wall blocks in a line on the excavated road construction site and performing embankment, it is possible to construct a retaining wall early and at low cost.
[0003]
The earth retaining L-type retaining wall block must be designed to be relatively lightweight and compact because of the need to reduce costs and transportation costs, while presuming that it has sufficient earth pressure supporting strength. did not become. On the other hand, the L-type retaining wall block that can be installed integrally with the protective fence must be designed to withstand excessive impact loads, and it is difficult to make a low-priced and compact design because both the dimensions and weight are large. Met.
[0004]
In general, it is not possible to install a protective fence directly on an L-type retaining wall block that supports earth pressure, and when using it intentionally, a large support block must be provided inside the L-shaped retaining wall block. did not become.
[0005]
However, if an additional large support block is provided on the inside of the L-type retaining wall block corresponding to the earth pressure, it becomes considerably large, resulting in an extra cost. Also, the installation work is a separate construction, so it is very expensive. Furthermore, since the support position of the column is large and close to the road, there is a problem that the road width is narrowed accordingly.
[0006]
[Problems to be solved by the invention]
In view of the above prior art, the present invention is equivalent to an L-type retaining wall block with a protective fence integrated type by providing a special protective fence mounting structure to a relatively lightweight and compact L-type retaining wall block that supports earth pressure. An object of the present invention is to provide a structure of an L-type retaining wall block with a protective fence, which can be designed with high quality, low cost, compact and highly functional.
[0007]
[Means for Solving the Problems]
The structure of the L-type retaining wall block with a protective fence according to the present invention for solving the above-described problems includes a retaining portion embedded in the road and a standing portion extending upward from one end of the retaining portion to constitute a retaining wall surface. An L-shaped retaining wall block having an L-shaped cross section arranged in a line along the road,
A continuous beam arranged along the inner upper portion of the L-shaped retaining wall block in a manner in which the top end width of the upright portion is expanded to 8 cm or more;
A column vertically erected along the inside of the continuous beam;
In the ground part of each column, a fence-like member that is laid horizontally toward the road,
And a support member that supports the bottom of the column inside the L-shaped retaining wall block and fixes the column to resist the force of pushing the column outward.
[0008]
In the structure of the L-type retaining wall block with a protective fence according to the present invention, a continuous beam is arranged inside the L-type retaining wall block corresponding to earth pressure, and a column is erected along the inside. Therefore, since the collision load applied to the support is transmitted to the upper part of the L-type retaining wall block via the continuous beam, the collision load is dispersed by the plurality of L-type retaining wall blocks. In addition, the continuous beam is designed in such a manner that the top end width of the upright portion is 8 cm or more, and its size and strength can be designed freely. Therefore, the degree of dispersion of the collision load can be freely determined, and the L-type retaining wall block can be made to be a collision load-compatible type. Since the continuous beam is installed at the upper part of the upright portion inside the L-shaped retaining wall block, the moment M accompanying the collision load can be minimized.
[0009]
In addition, a support member that supports and fixes the bottom of the column and resists the force of pushing the column outward is provided inside the L-shaped retaining wall block. The force that pushes the struts outward is converted into a rotational moment M and acts as a pulling force T on the upright portion. Here, the continuous beam is provided at the upper part of the standing part, and the upper part of the standing part serves as the center of rotation of the support column. Therefore, the drawing force T can be freely designed by setting the depth position.
[0010]
When the distance from the continuous beam to the fence-like member by the corrugated iron plate or the wood beam is L1, and the distance from the continuous beam to the support member is L2, the pulling force T is L1 / L2. The distance L1 is about 60 cm. The distance L2 can be up to the maximum upright portion depth L3. The depth L3 is 1.5 m, 2.0 m, 2.5 m or the like according to the standard. The distance L2 can be freely determined within this range. Generally, it is about 50 to 80 cm. The pulling force T calculated by these values is a value that can be sufficiently endured by a normal insert fitting. In the structure of the L-type retaining wall block with a protective fence having the above-described configuration, the column tilt angle can be within 16 ° with respect to the collision energy of about 45 KJ.
[0011]
Further, in the structure of the L-type retaining wall block with a protective fence according to the present invention, the support member is an outer side with a flange that is applied from the outside to a drain port formed in a standing part of the L-type retaining wall block. A ring member and an inner ring member positioned inside and screwed into the outer ring member;
The inner ring member is provided with a support portion for supporting the bottom portion of the support column,
The holes of the support portion, the inner ring member, and the outer ring member communicate with each other from the inside to the outside of the L-shaped retaining wall block to form a new drainage port. As a result, the support member can be attached using the drain port, and a more inexpensive and compact design is possible. Moreover, since the outer ring member has a shape in which the flange portion is applied to the drain outlet, high strength support is possible and the design is excellent.
[0012]
The structure of the L-type retaining wall block with a protective fence according to the present invention includes a retaining portion embedded in the road ground and a standing portion extending upward from one end of the retaining portion to constitute a retaining wall surface. An L-shaped retaining wall block having an L-shaped cross section arranged in a row along the upper side, and an upper portion of the upright portion extending along the inner upper portion of the L-shaped retaining wall block in such a manner that the top end width is expanded to 8 cm or more. A continuous beam extending vertically along the inner side of the continuous beam, a fence-like member laid across the road at the ground portion of each column, and the L-shaped retaining wall block A support member that supports the bottom of the column on the inside and is fixed to resist the force of pushing the column outward; an anchor block that is arranged in parallel to the continuous beam and embedded in the road; and the continuous beam And a linear tension member that connects the anchor block in a tensioned state, Characterized in that it comprises al.
[0013]
Since it can be pulled and fixed with an anchor block with additional continuous beams installed, it is possible to reduce the overturning load and breaking load applied to the upright portion by the amount of fixing force of the anchor block. The installation of the underground anchor block is determined according to the target vehicle of the protective fence, but can be omitted when only the light vehicle below the ordinary passenger car is targeted. Although the anchor block is arranged parallel to the continuous beam, the shape of the anchor block is not necessarily limited to a rectangular parallelepiped. For example, a box shape or a ball shape may be used. In short, it may be arranged inside the road away from the continuous beam.
[0014]
Furthermore, the structure of the L-type retaining wall block with a protective fence according to the present invention comprises a retaining portion embedded in the road ground and a standing portion extending upward from one end of the retaining portion to constitute a retaining wall surface. An L-shaped retaining wall block with an L-shaped cross section arranged in a row along the column, and a column through hole at a position where the top end width of the upright portion is secured to 8 cm or more, and the upper part inside the L-shaped retaining wall block A plate-like continuous beam arranged along the column, a column inserted into the column through-hole of the plate-like continuous beam, and a column standing upright; And a support member that supports the bottom of the column inside the L-shaped retaining wall block and fixes the column to resist the force of pushing the column outward. At least the front wheel of the collision vehicle is hung from the inner surface of the fence-shaped member to the inner side of the road. Characterized in that it has a width of Rudake.
[0015]
When the vehicle collides with the fence-like member (beam), in the deformable protective fence, the column is tilted and the beam is pushed out to the outer piece. According to the standards for the installation of guard fences established by the Japan Road Association in November 1998, the maximum approach distance is 30 cm. However, when the beam extends to this tolerance, the space between the retaining wall and the beam is 30 cm at maximum. May occur. When this space is generated, a tire of a collision vehicle may be fitted into this space. When a tire fits in the space, the vehicle stops suddenly, excessive acceleration is applied to the occupant, and an occupant death accident occurs. There is also a high possibility that a suddenly stopped vehicle will push out a momentum beam, destroy the beam, and throw the vehicle into the valley.
[0016]
However, in the present invention, since the top end portion is expanded to the outside of 8 cm with reference to the outside of the support column, there is no space in which the tire fits, and the vehicle can be reflected to the inside of the road as theoretically. This number of 8 cm is an experimental value when the column is a steel pipe and the beam is a corrugated steel sheet. This value is 8 cm or more, preferably 11 cm or more, but may be practically 8 cm or more. If this is 13 cm or more, the retaining wall top end width is unnecessarily enlarged and the size is increased. Therefore, N = 8 to 13 cm is appropriate for this value N value, and the center value is 11 cm.
[0017]
The plate-like continuous beam of the invention has a width that allows at least a front wheel of a collision vehicle to be applied from the inner side surface of the fence-shaped member to the inner side of the road. Therefore, the collision vehicle can collide with the fence-like member by stepping on the plate-like continuous beam and can greatly reduce the impact applied to the retaining wall.
[0018]
The width of the plate-like continuous beam may be set to a value equal to or larger than a value obtained by multiplying the tire radius R by Sin 20 ° when the collision angle is 20 degrees with reference to the inner surface of the fence-shaped member. In the case of a tire having a diameter of 1050 mm, it is preferably 20 cm or more, more preferably 30 cm or more.
[0019]
Other functions can be added to the continuous plate beam. For example, a portion protruding about 10 to 20 cm can be provided in the column through-hole portion, and this can be used as a pedestrian boundary vehicle stop. In this case, it is preferable to design so that the inner end of the vehicle stop does not protrude beyond the position along the inner surface of the fence-shaped member. Further, the upper surface of the plate can be used as a flowing water surface, and can be used as a flowing water passage to a drain outlet at a road edge.
[0020]
Furthermore, in the structure of the L-type retaining wall block with a protective fence according to the present invention, the functional part of the first-stage continuous beam is integrally formed at the upper end part of the upright part, and the continuous direction is provided at both ends of the individual blocks in the extending direction. Both ends fixing brackets necessary for the functional part of the beam to function as a continuous beam are mounted. Therefore, by integrating the continuous beam of the present invention, even if it is a deformable protective fence that is lightweight, high-strength, highly versatile, and has a maximum approach stroke, the tires do not protrude and can be protected safely. A rail can be provided.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 and 2, the structure of the L-type retaining wall block 1 with a protective fence according to one embodiment of the present invention includes a holding portion 4 embedded in earth and sand (underground) 3 of a road 2 and the An L-shaped retaining wall block 6 having an L-shaped cross section composed of an upright portion 5 extending upward from one end of the holding portion 4 and constituting a retaining wall serves as a base. A continuous beam 8 is disposed along the road 2 on the inner upper portion of the L-shaped retaining wall block 6 in such a manner that the width of the top end 7 of the upright portion 5 is expanded to 11 cm or more.
[0022]
Along the inside of the continuous beam 8, a steel pipe column 9 is erected vertically for each L-type retaining wall block 6. In this case, a width obtained by adding the width B2 of the continuous beam 8 to the width B1 of the top end 7 is an expanded width B3. A fence-like member 10 such as a corrugated iron plate or a wood beam is laid across the road 2 at the ground portion of each column 9. Inside the L-shaped retaining wall block 6, the bottom portion of the support column 9 is supported, and the lower end of the support column 9 is supported by the upright portion 5 to resist the moment M that pushes the support column 9 outward with a collision load F. A support fitting 11 is provided as a support member for attracting and supporting. Let T be the pulling force applied to the upright portion 5.
[0023]
The support metal fitting 11 of this example has a U-shaped band member that sandwiches the support column 9 and fixes both arm portions of the band member with bolts. This bolt is screwed into the nut member of the insert fitting 12 embedded in the upright portion 5. The continuous beam 8 is composed of a steel pipe square member or a concrete block. The width B2 is determined in such a manner that the width B1 of the top end 7 of the upright portion 5 is expanded to a specified dimension of 8 cm or more. Further, since the strength becomes a fulcrum for generating the pulling force T when the moment M accompanying the collision load F is applied, the structure can withstand these resultant forces. The continuous beam 8 is a series of continuous beams by fastening steel plates fixed at both ends with bolts (not shown). When the distance from the continuous beam 8 to the fence-like member 10 is L1, and the distance from the continuous beam to the support bracket 11 is L2, the relational expression M · L1 = T · L2 is established.
[0024]
According to the structure of the L-type retaining wall block 1 with a protective fence having the above configuration, when the moment M accompanying the collision load F acts on the fence-like member 10, the pulling force T is applied to the support bracket 11 with the continuous beam 8 as a fulcrum. Will occur. The force applied to the fulcrum is distributed and transmitted to the plurality of L-shaped retaining wall blocks 6 via the continuous beam 8. The way of transmission is related to the strength of the continuous beam 8. By setting it as high intensity | strength, the amount of transmission power can be made small to a desired value. That is, it becomes possible to use the L-type retaining wall block 6 corresponding to the normal earth pressure.
[0025]
On the other hand, the pulling force T of the support fitting 11 is a value obtained by multiplying the moment M by L1 / L2. The insert fitting 12 may be determined according to the pulling force T. In order to reduce the pulling force T, the distance L2 may be extended downward. In the structure of the L-type retaining wall block with a protective fence having the above-described configuration, the column tilt angle can be set within 16 degrees with respect to the collision energy of about 45 KJ.
[0026]
As shown in FIGS. 3 and 4, an L-type retaining wall block 13 with a guard fence according to another embodiment of the present invention is different from the one shown in FIGS. 1 and 2 in the support bracket 14. Members having the same function are denoted by the same reference numerals.
[0027]
The support metal fitting 14 has an outer ring member 16 with a flange 16F applied from the outside to the drain port 15 formed in the upright portion 5 of the L-shaped retaining wall block 6, and the outer ring member 16 positioned on the inner side. The inner ring member 17 is screwed to the inner ring member 17. The inner ring of the outer ring member 16 is threaded to form a nut member. The outer ring of the inner ring member 17 is threaded to form a bolt member. The inner ring member 17 is provided with a box-shaped support portion 18 that supports the bottom portion of the support column 9. The holes 18H, 17H, and 16H of the support portion 18, the inner ring member 17, and the outer ring member 16 communicate with each other from the inside to the outside of the L-shaped retaining wall block 6, and new drain ports 18H, 17H, 16H is formed. Although the hole portion 18H of the support portion 18 appears to be crushed by the support column 9, the hole portion 18H is, for example, an ellipse and has a drainage function. A hole for drainage may be separately provided on the lower surface or the rear surface of the support portion 18. Although the support metal fitting 14 is referred to as a metal fitting, it can be made of a material other than metal, for example, the support portion 18 is made of a material other than metal such as plastic material or concrete.
[0028]
To attach the support metal fitting 14, first, the inner ring member 17 is inserted into the drain port 15, the outer ring member 16 is applied from the outside, and the flange 16F is screwed until it contacts the outer surface of the upright portion 5. The support column 9 can be erected vertically by inserting the bottom of the support column 9 into the hole 18H. The support column 9 and the continuous beam 8 are lightly fixed using a band member or the like as appropriate.
[0029]
According to the structure of the L-type retaining wall block 13 with a protective fence according to the present embodiment, the collision load F is set with the continuous beam 8 as a fulcrum, similarly to the L-type retaining wall block 1 with the protective fence shown in FIGS. The moment M associated with can be distributed to each L-type retaining wall block 6. Since the support fitting 14 of this example is based on the outer ring member 16 and the inner ring member 17 using the drainage port 15, it has a considerably high strength and can sufficiently withstand even if the distance L2 is small. Further, since the new drain ports 18H, 17H, and 16H are configured, there is no need to provide a separate drain port. Since no insert metal fitting is required, the L-shaped retaining wall block 6 can be manufactured at low cost.
[0030]
FIG. 5 is a perspective view showing another example of the support member of the support column 9. The support member of this example includes a box-shaped support portion 19 positioned inside the upright portion 5 and a long bolt 20 penetrating the upright portion 5 from the outside. On the upper surface of the support portion 19, a hole portion 21 for fitting and supporting the support column 9 and a screw hole 22 for screwing the screw portion of the long bolt 20 are provided. The support portion 19 can be made as a concrete molded product by embedding, for example, a tubular insert fitting with a screw cut in the screw hole 22. Since the diameter of the long bolt 20 is about 15 to 20 mm, a nominal hole for penetrating the long bolt 20 may be provided in advance, or may be drilled later with a concrete drill or the like.
[0031]
According to the support member having the above configuration, the support portion 19 can be firmly fixed to the upright portion 5 using the long bolt 20. Since the diameter of the long bolt 20 is not so large, the strength of the upright portion 5 is not weakened. The bolt 20 can sufficiently withstand a large pulling force T.
[0032]
FIG. 6 relates to another embodiment of the present invention, in which the continuous beam 8 is tension-fixed by an anchor block 23 embedded in the underground 3. A long anchor block 23 is embedded in the ground near the center of the road in parallel with the continuous beam 8, and fixed between them by a wire tension member 24 such as a wire, a bolt, or a reinforcing bar. Fixing is performed in a state where the linear tension member is in tension. The figure shows an example in which the fence-like member 10 is formed of a corrugated iron plate.
[0033]
In this example, since the continuous beam 8 is pulled and fixed by the anchor block 23, the force applied to the upright portion 5 through the continuous beam 8 with the generation of the collision load F is reduced and transmitted. Can do. For this reason, the direction of tension should be as close to horizontal as possible. In order to obtain a sufficient effect of the tensile force f, it is also effective to provide a slight gap B of about 2 to 5 mm between the standing part 5 and the continuous beam 8.
[0034]
7 and 8 relate to still another embodiment of the present invention, in which the continuous beam is a plate-shaped continuous beam 25. FIG. The illustrated plate-like continuous beam 25 includes a pedestrian road boundary vehicle stop portion 27 having a column through hole and a floor portion 28. The plate-like continuous beams 25 arranged in a row are connected to each other by fixing one or a plurality of short reinforcing bars with mortar to the both-end fixing bracket 29 provided at the boundary. As illustrated in FIG. 8, the width B4 of the floor portion 28 is determined as a numerical value that the tire 30 can ride on, assuming the tire 30 that contacts the fence-like member 10 at a collision angle of 20 degrees. This value is calculated to be 17 cm or more by multiplying the radius by Sin 20 ° for a tire having a diameter of 1050 mm with reference to the surface position BV of the fence-like member 10. This value is preferably 30 cm or more as a sufficiently large value. The tension fixing method by the anchor block 23 shown in FIG. 6 can also be implemented.
[0035]
With the configuration shown in FIGS. 7 and 8, when the vehicle contacts the fence-like member 10, the tire 30 steps on the floor portion 28. In the collision in a state where the floor portion 28 is stepped on with the tire 30, the impact applied to the upright portion 5 is greatly reduced, and the retaining wall can be prevented from being broken. The pedestrian road boundary stop portion 27 not only supplements the vehicle stop function, but also provides a boundary line to enhance design, and can further form a flow path to the rainwater road drainage port.
[0036]
The plate-like continuous beam 31 shown in FIG. 9 has a shape excluding the protruding portion of the pedestrian boundary boundary stop portion 27 of the plate-like continuous beam 28 shown in FIGS. 7 and 8. 7 and 8 can be made lighter by the amount of no protrusion.
[0037]
The L-shaped retaining wall block 32 shown in FIG. 10 is obtained by molding one continuous beam functional portion 33 on the upright portion and disposing both-end fixing brackets 29 at both ends of each block. The arrangement position of the both-end fixing metal fittings is in the vicinity of the intersecting position of the standing part and the holding part. That is, when a collision load is applied through the through-hole (pocket) for the column device, this force is received by the continuous beam functional portion 33 so that it is not kinked and the entire block does not slide. It is a position that can be held. It is also possible to distribute to the upper and lower two places.
[0038]
Since the retaining wall block 32 having the above configuration is integrally formed including a continuous beam, the lightweight and high-strength retaining wall block 32 can be easily installed, and the retaining wall top end position is located from the pocket outer surface position. The distance to the vehicle is 8 cm or more, so that the tires protrude and the vehicle and the beam are not given a high impact force, and safety can be achieved.
[0039]
The present invention is not limited to the above-described embodiment, and can be implemented in various modes by making appropriate design changes without departing from the gist of the present invention.
[0040]
【The invention's effect】
As described above, according to the present invention, a continuous beam is provided on the inner upper portion of the L-shaped retaining wall block in such a manner that the top end width of the upright portion is expanded to 8 cm or more, and each retaining wall block is vertically erected along the inner side. Since the bottom portion of the supporting column is supported by the support member provided on the upright portion, an L-type retaining wall block with a protective fence L having a particularly high strength can be provided at a low cost. The structure of each member is compact, and the L-type retaining wall block can be provided by an L-type retaining wall block that supports earth pressure. The support member can also be easily accommodated by tightening the bolt to an insert fitting in which a simple U-shaped member is embedded in the upright portion by setting the installation position appropriately.
[0041]
In addition, when the support member is configured by using an outer ring member that is applied from the outside to the drain port and an inner ring member that is screwed to the outer ring member, the support strength is increased and the structure is excellent in design. It becomes. Since there is no need to provide an insert metal fitting at the upright portion of the L-type retaining wall block and it is not necessary to separately provide a drain outlet, the cost of the L-type retaining wall block can be reduced accordingly.
[0042]
Further, according to the structure of the L-type retaining wall block with a protective fence of the present invention in which the continuous beam is pulled and fixed by the anchor block, the continuous beam can be pulled and fixed by the anchor block additionally installed. Only the falling load and breaking load applied to the upright part can be reduced.
[0043]
Furthermore, according to the structure of the L-type retaining wall block with a guard fence of the present invention using a plate-like continuous beam, the impact applied to the retaining wall is greatly reduced because it has a width at least enough to add the front wheel of the collision vehicle. be able to. If the tensile effect of the anchor block is added and combined, the overall effect is further increased, and the force applied to the upright portion can be drastically reduced.
[0044]
In addition, the functional part of the continuous beam is integrally molded at the upper part of the upright part, and by providing both-end fixing brackets to make these function as a continuous beam, it is easy to construct and a highly functional retaining wall block can be designed to be lightweight and compact. .
[Brief description of the drawings]
FIG. 1 is a perspective view showing a structure of an L-shaped retaining wall block with a protective fence showing an embodiment of the present invention.
FIG. 2 is a left sectional view of FIG.
FIG. 3 is a side cross-sectional view of an L-shaped retaining wall block with a protective fence showing another embodiment of the present invention.
4 is a perspective explanatory view showing details of the support metal fitting shown in FIG. 3; FIG.
FIG. 5 is a perspective view showing another example of a support member.
FIG. 6 is a side view of the structure of an L-shaped retaining wall block with a protective fence according to another embodiment of the present invention.
FIG. 7 is a perspective view showing the structure of an L-shaped retaining wall block with a protective fence according to still another embodiment of the present invention.
FIG. 8 is a side view showing the operation of the plate-like continuous beam shown in FIG.
FIG. 9 is a perspective view showing another example of a plate-like continuous beam.
FIG. 10 is a perspective view of an L-shaped retaining wall block in which continuous beam functional parts are integrated.
[Explanation of symbols]
1,13 L-type retaining wall block with guard fence 2 Road 3 Earth and sand (underground)
4 Standing portion 5 Standing portion 6 L-type retaining wall block 7 Top end 8 of the standing portion Continuous beam 9 Column 10 Bar-like members 11 and 14 Support metal fitting 12 Insert metal fitting 15 Original drainage port 16 Outer ring member 16H Flange 17 Inner ring member 18, 19 Bearing portion 18H / 17H / 16H Newly formed drainage port 20 Long bolt 21 Hole portion 22 Screw hole 23 Anchor block 24 Linear tension member 25 Plate-like continuous beam 26 Strut through-hole 27 Pedestrian boundary vehicle stop Part 28 Floor part 29 Both-ends fixing bracket 30 Tire 31 Plate-like continuous beam 32 Continuous beam integrated L-type retaining wall block 33 Functional part F of continuous beam Collision load M Moment T due to collision load Pull-out force L1 From continuous beam to fence-like member Distance L2 Distance from continuous beam to support bracket f Tensile force of linear tensile material B1 Top width B2 Continuous beam width B3 Expanded width BV Surface position Δ of the fence-like member Gap

Claims (5)

An L-shaped retaining wall having an L-shaped cross section arranged in a row along the road, comprising a retaining portion embedded in the road ground and a standing portion extending upward from one end of the retaining portion to constitute a retaining wall surface Block,
A continuous beam arranged along the inner upper portion of the L-shaped retaining wall block in a manner in which the top end width of the upright portion is expanded to 8 cm or more;
A column vertically erected along the inside of the continuous beam;
In the ground part of each column, a fence-like member that is laid horizontally toward the road,
An L-type retaining wall block with a protective fence, comprising: a supporting member that supports a bottom portion of the column inside the L-shaped retaining wall block and fixes the column to resist a force pushing the column outward. Construction. The structure of the L-type retaining wall block with a protective fence according to claim 1, wherein the support member is provided with a flange that is applied from the outside to a drain port formed in a standing part of the L-type retaining wall block. An outer ring member and an inner ring member positioned inside and screwed to the outer ring member;
The inner ring member is provided with a support portion for supporting the bottom portion of the support column,
Each of the holes of the support portion, the inner ring member, and the outer ring member communicates from the inner side to the outer side of the L-shaped retaining wall block and serves as a new drainage port. Retaining wall block structure. An L-shaped retaining wall having an L-shaped cross section arranged in a row along the road, comprising a retaining portion embedded in the road ground and a standing portion extending upward from one end of the retaining portion to constitute a retaining wall surface Block,
A continuous beam arranged along the inner upper portion of the L-shaped retaining wall block in a manner in which the top end width of the upright portion is expanded to 8 cm or more;
A column vertically erected along the inside of the continuous beam;
In the ground part of each column, a fence-like member that is laid horizontally toward the road,
A support member that supports the bottom of the column inside the L-shaped retaining wall block and fixes the column to resist the force of pushing the column outward;
An anchor block arranged in parallel to the continuous beam and embedded in the road ground;
A structure of an L-shaped retaining wall block with a protective fence, comprising: a linear tension member that connects the continuous beam and the anchor block in a tensioned state. An L-shaped retaining wall having an L-shaped cross section arranged in a row along the road, comprising a retaining portion embedded in the road ground and a standing portion extending upward from one end of the retaining portion to constitute a retaining wall surface Block,
A plate-like continuous beam having a column through hole at a position where the top end width of the upright portion is secured by 8 cm or more, and disposed along the inner upper portion of the L-shaped retaining wall block;
A column that is inserted into the column through-hole of the plate-like continuous beam and is erected vertically,
In the ground part of each column, a fence-like member that is laid horizontally toward the road,
A support member that supports the bottom of the column inside the L-shaped retaining wall block and fixes the column to resist the force that pushes the column outward. A structure of an L-type retaining wall block with a protective fence, which has a width that allows at least a front wheel of a colliding vehicle to be hung from a side surface toward the inside of the road. It is a structure of the L-type retaining wall block with a protection fence of Claim 4, Comprising: The functional part of the previous period continuous beam is integrally molded by the upper end part of the said standing part, and it is in the extension direction both ends of each block. A structure of an L-type retaining wall block with a protective fence, wherein both ends fixing brackets necessary for the functional portion of the continuous beam to function as a continuous beam are mounted.

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