JP2020002703A - Guard fence for road foundation member, guard fence for road, and construction method thereof - Google Patents

Abstract

To provide a guard fence for road foundation member, guard fence for road, and construction method thereof capable of suppressing a sudden decrease in the supporting force of the entire guard fence for road and, consequently, suppressing a large deformation of a fence member.SOLUTION: A base member buried in the ground to support a post of a guard fence for road, includes: a wall-shaped member 1 having a hollow portion 1a for receiving the post, and formed to be long in a road extending direction; and a rotation suppressing member 2 provided to protrude toward a roadway side V and/or a sidewalk side W of the wall-shaped member 1. The wall-shaped member 1 is formed by joining any one or a combination of two or more of a hollow square steel pipe 11, an H-shaped steel, a bent steel plate, and a flat steel plate.SELECTED DRAWING: Figure 1

Description

  The present invention belongs to the technical field of a base member that supports a column of a road protection fence (hereinafter, appropriately referred to as a protection fence).

Guarding fences for roads are applied by appropriately selecting guard pipes, guardrails, guarding cables, etc. according to the place and purpose of their installation, but these guarding fences are usually used as foundation members buried underground. , And a support member having a lower end fixed to the base member and a fence member (a pipe material, a beam material, or a cable material) provided between the support members.
The fence member is provided to play a role of reliable vehicle guidance and good line-of-sight guidance, but due to a sudden decrease in the support force of the entire protective fence at the time of collision of a vehicle or the like, the deformation amount of the fence member is large. As a result, there is a problem to be solved such that a vehicle or the like that cannot play the role and collides with a fence member may run off a road (roadway) and collide with a pedestrian or a structure outside the road. Has become.

  Therefore, conventionally, a technique has been disclosed in which the support force of the base member, and consequently, the support force of the entire road protection fence is increased by devising the form of the base member that is indispensable in configuring the road protection fence. (For example, see Patent Documents 1 to 4).

  As shown in FIGS. 2 to 11, Patent Document 1 discloses a cylindrical body 1 having hook-shaped engaging edges 2 formed on both sides, and a vertically movable engagement with the engaging edges 2. And a resistive plate 3 formed on one side with an engaging edge 4 having a shape that does not detach laterally. reference).

  Patent Document 2, as shown in FIG. 1 and the like, a body portion made of a plate material having a shape that can be in close contact with the peripheral surface of the pile body 10 and having one or a plurality of openings 21D through which bolts 22 are inserted. 21A and one plate on each side of the body 21A, and a flat plate parallel to the extending direction of the pile 10 when the peripheral surface of the pile 10 is brought into close contact with the body 21A. A shackle plate 21 having two wings 21B made of a plate material is disclosed (see claim 1).

  Patent Literature 3 discloses, as shown in FIG. 1 and the like, a foundation pile 15 for erection of a support strut which is driven into the ground G by striking an upper end, and a hollow cylinder into which a lower portion of the support 11 can be inserted. A top end portion of the mold, and a pointed end extending coaxially downward from a lower portion of the upper end portion 17 and capable of cutting into the ground by the impact. A foundation pile is disclosed (see claim 1).

  In Patent Document 4, as shown in FIG. 1 and the like, a burying hole 21 capable of burying the column 1 is provided in the vertical direction of the rigid foundation 2, and a part of the column 1 is buried in the burying hole 21. A buried pillar portion 12 buried in the rigid foundation 2 is formed in the pillar 1 and a remaining portion is a foundation structure of the pillar 1 formed as an exposed pillar portion 11 exposed from the rigid foundation 2, at least Holding means 3 is provided for holding the lower end of the column 1 from below when the buried column 12 is formed, and the buried column 12 must be able to withstand external stress applied to the exposed column 11 by the holding means 3. A basic structure of a pillar, which is buried in the rigid foundation 2 by a length, is disclosed (see claim 1).

Japanese Utility Model Publication No. 60-148358 Japanese Utility Model Registration No. 3207383 JP 2010-106494 A JP 2006-328860 A

  In order to increase the support force of the base member of the road protection fence and to suppress the sudden drop in the support force of the entire protection fence at the time of a vehicle collision, etc. It is preferable to have a certain length (width) in the direction in which the road extends in order to receive the traffic. In addition, it is preferable that the rotation suppressing member is protruded in a direction perpendicular to the road (a direction perpendicular to the direction in which the road extends) so as to effectively resist the rotational behavior of the base member itself generated at the time of a collision such as a vehicle.

  In short, in order to suppress a sudden decrease in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member, it is formed into a wall shape that is more susceptible to earth pressure, and a rotation suppressing member (resistance member) is formed in a direction orthogonal to the road. Although the attached base member is preferable, the techniques disclosed in Patent Documents 1 to 4 cannot satisfy all of these two requirements, and a further improvement is required.

  In particular, the second requirement, that is, the means for attaching the rotation suppressing member, can efficiently enhance the stickiness (toughness) of the protective fence at the time of collision of a vehicle or the like, and can effectively suppress a sharp decrease in the supporting force. None of the techniques disclosed in Patent Documents 1 to 4 satisfy the second requirement.

  The present invention has been devised in view of the above-described problems of the background art, and has as its object to realize a base member that satisfies all of the above two requirements, so that the entire road fence can be protected. An object of the present invention is to provide a base member of a road protection fence, a road protection fence, and a construction method for the same, which can suppress a rapid decrease in a supporting force and a large deformation of the fence member.

As means for solving the above-mentioned problem, a base member of a road protection fence according to the invention described in claim 1 is a base member that is buried in the ground and supports a support of the road protection fence,
A wall-shaped member including a hollow portion that receives the support, and formed to be long in the road extension direction,
A rotation suppressing member provided to protrude toward the roadway side and / or the sidewalk side of the wall-shaped member;
Characterized by comprising:

  According to a second aspect of the present invention, in the base member of the road protection fence according to the first aspect, the wall-shaped member is any one of a hollow rectangular steel pipe, an H-shaped steel, a bent steel plate, and a flat steel plate. Or a combination of two or more.

  According to a third aspect of the present invention, in the base member for a road protection fence according to the first or second aspect, the rotation suppressing member is any one or two of a friction plate, a support plate, and a bottom plate. It is characterized by a combination of two or more.

  According to a fourth aspect of the present invention, in the base member of the road protection fence according to the third aspect, the friction plate is provided so as to protrude vertically and / or horizontally on the roadway side of the wall-shaped member. It is characterized by.

  According to a fifth aspect of the present invention, in the base member of the road protection fence according to the third or fourth aspect, the support plate is provided at a top end of the wall-shaped member on the sidewalk side in a horizontal direction. It is characterized by.

  According to a sixth aspect of the present invention, in the base member of the road fence according to any one of the third to fifth aspects, the bottom plate is provided via a bottom plate provided at a bottom of the wall-shaped member. It is characterized by being provided rotatably.

  The invention described in claim 7 is characterized in that, in the foundation member of the road protection fence according to any one of claims 1 to 6, the structure can be buried in the ground by driving with a driving machine. And

  According to an eighth aspect of the present invention, there is provided a road protection fence according to any one of the first to seventh aspects, a support erected in a hollow portion of the base member, and the erection stand. And a fence member such as a pipe material, a beam material, or a cable material provided between the columns.

  According to a construction method of a road protection fence according to the invention as set forth in claim 9, after the foundation member according to claim 7 is driven into the ground by a driving machine and buried, a support is provided in the hollow portion of the foundation member. And a fence member such as a pipe material, a beam material, or a cable material is erected between the erected columns.

  According to a tenth aspect of the present invention, there is provided the road protection fence construction method according to the ninth aspect, further comprising a base portion mounted on a top end of the base member and a downward projecting portion insertable into the hollow portion. Before the steel jig is driven into the ground by the driving machine, the downward projecting portion is set by inserting the hollow into the hollow portion, and the base member is driven into the ground by the driving machine. It is characterized by removal after finishing.

ADVANTAGE OF THE INVENTION According to the steel base member of the road protection fence concerning this invention, the road protection fence, and its construction method, the following effects are produced.
(1) A protective fence for roads is constructed using a base member that is formed into a wall shape that is more susceptible to earth pressure in the direction of road extension and that has a rotation suppression member (resistance member) in the direction perpendicular to the road. , And a large deformation of the fence member can be suppressed. Therefore, it is possible to realize a road protection fence that can play a role of reliable vehicle guidance and good gaze guidance even in the event of a collision with a vehicle or the like.
(2) In the case of using a base member having a configuration that can be driven by a driving machine as described in claim 7, the step of excavating the ground can be omitted, so that the operation time can be greatly reduced and the disposal can be performed. There is almost no excavated soil to be disposed of, and it is extremely excellent in workability, economy, and global environment.
(3) In addition, when the base member is made of steel, a base member that has high strength and rigidity and is unlikely to be damaged or broken can be realized.

A is a perspective view showing a base member of the road fence according to the first embodiment, B is a plan view, C is a front view, and D is a DD arrow of C. FIG. FIG. 10 is a perspective view illustrating a base member of the road protection fence according to the second embodiment. FIG. 10 is a perspective view illustrating a base member of a road protection fence according to a third embodiment. FIG. 10 is a perspective view illustrating a base member of a road protection fence according to a fourth embodiment. FIGS. 7A and 7B are perspective views each showing a base member of the road protection fence according to the fifth embodiment. FIG. 14 is a perspective view illustrating a base member of a road protection fence according to a sixth embodiment. FIG. 14 is a perspective view illustrating a base member of the road protection fence according to the seventh embodiment. It is a perspective view showing the variation of the foundation member of the road protection fence of Example 6. FIG. 18 is a perspective view showing a variation of the base member of the road protection fence according to the seventh embodiment. It is a perspective view showing the variation of the foundation member of the road protection fence of Example 6. FIG. 18 is a perspective view showing a variation of the base member of the road protection fence according to the seventh embodiment. A is a perspective view showing a foundation member of the road fence according to the eighth embodiment, B is a plan view of the same, and C is an exploded perspective view of a main part of A. A is a perspective view showing a variation of the base member of the road protection fence of the eighth embodiment, and B is a developed view of A. A is a perspective view showing a variation of the base member of the road protective fence of Example 8, B is the same plan view, and C is an exploded perspective view of a main part of A. It is the perspective view which showed the variation of the foundation member of the road protective fence which concerns on Examples 1-8. A is a front view showing a steel jig used when driving the base member of the road protective fence according to Examples 1 to 8 with a driving machine, and B is a steel jig used to connect the base member ( FIG. 2 is a front view showing the state set in FIG. 1), and C is a plan view thereof. 5 is a graph confirming the effect of the support performance of the road protection fence constructed using the base member of the road protection fence according to Example 1.

  Next, an embodiment of a foundation member of a road protection fence according to the present invention, a road protection fence, and a construction method thereof will be described with reference to the drawings.

1A to 1D show a base member of a road fence according to the first embodiment.
The base member is buried in the ground to support a pillar of a road protection fence, and includes a hollow portion 1a for receiving the pillar, and a wall-shaped member 1 formed to be long in a road extending direction; A rotation-suppressing member 2 (friction plate 21) provided to protrude toward the roadway side V (and / or the sidewalk side W) of the wall-shaped member 1.
The wall-shaped member 1 is integrally formed by appropriately combining a hollow rectangular steel pipe 11 having substantially the same height and wall thickness and an H-shaped steel 12 and welding them together. As an example, the wall-shaped member 1 according to the present embodiment includes a side surface of one hollow rectangular steel pipe 11 disposed at the center and a flange surface of four H-shaped steel members 12 disposed at right and left sides thereof. They are arranged so as to be flush with each other, and are formed into a wall shape by welding and joining the contact portions of each other. Further, the hollow rectangular steel pipe 11 has an angle iron (angle) 3 welded to the lower end thereof.
In the present embodiment, the rotation suppressing member 2 employs a friction plate 21. Three friction plates 21 according to the present embodiment are provided at equal intervals on the left and right sides in the vertical direction on the roadway side V of the wall-shaped member 1. The three vertical friction plates 21 are provided integrally by welding and joining means over the entire length in the height direction of the members 11 and 12 to be attached.
Here, the role played by the friction plate 21 will be described. When an external force is generated at the time of a vehicle collision or the like, the base member takes a behavior of rotating in the ground and may be pulled out of the ground due to a pulling behavior. However, the resistance of the friction plate 21 can also exert resistance to the pull-out behavior, and the rotation of the base member itself can be suppressed. Similarly, the bottom plates 23 to 25 described later can also exhibit resistance to the pulling-out behavior.

The hollow rectangular steel pipe 11 is implemented, for example, in dimensions of 125 × 125 mm in length and width, a plate thickness of 4.5 mm, and a height of 434 mm. In the present embodiment, an angle steel (angle) 3 having a height of 66 mm (90 × 90 mm in length and length) and a thickness of 6 mm is integrally formed at the lower end of the hollow rectangular steel pipe 11 by welding and joining means so as to project downward. The height is 500 mm.
As an example, the H-shaped steel 12 is implemented with a cross-sectional size of 125 × 125 × 6.5 × 9 (mm) and a height of 500 mm.
As an example, the vertical friction plate 21 has a plate thickness of 4.5 mm, a protrusion size of 50 mm, and a height (length) according to the height size (434 mm, 500 mm) of the corresponding members 11 and 12. Have been.
The dimensions of the members 11, 3, 12, 21 are of course not limited to the above, and the design can be changed as appropriate according to the cross-sectional size of the standing pillar, the required impact strength of the protective fence, and the like. Incidentally, the weight of the base member according to the present embodiment is about 30 to 50 kg.

According to the basic member having the above-described configuration, the hollow rectangular steel pipe 11 and the H-shaped steel 12 are formed into a wall shape that is more susceptible to earth pressure in the direction in which the road extends, and the rotation suppressing member 2 in the direction orthogonal to the road (roadway side V). Since a plurality of vertical friction plates 21 are attached (for example, three as shown in the drawing), and a base member having a height dimension (500 mm) that does not interfere with an underground object is used to construct a road protective fence. Therefore, it is possible to suppress a sudden drop in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member, thereby ensuring reliable vehicle guidance and good gaze guidance even in the event of a collision of a vehicle or the like. A road fence that can be fulfilled can be realized.
In addition, since the base members can be manufactured compactly with the members 11, 3, 12, and 21 from which materials can be easily procured, a base member excellent in handling and workability, and furthermore, a road protective fence can be realized.
In addition, the present applicant actually embeds the base member having the above-described configuration in the ground, stands the support in the hollow portion 1a of the base member, and statically loads the top of the support on the sidewalk side W in the horizontal direction. An experiment (static loading test) is being performed. As a result, as shown in FIG. 17, the support performance when the pillars are erected on the basic members (members 11, 3, 12, 21) of FIG. , 12), it has been found that the supporting force is less likely to be reduced as compared with the supporting performance when the support is erected.

Incidentally, the base member having the above configuration can be installed at an installation site such as a road by excavation means or can be installed by driving means.
The excavating means is to excavate and form a substantially rectangular parallelepiped hole capable of accommodating the foundation member, drop the foundation member into the hole and install the same, and then backfill a necessary amount of excavated soil. It is a means to fix in the ground.
The driving means is a means for gradually driving the base member from above with a driving machine, and burying the base member in the ground by pressing force and fixing the base member at the same time. If asphalt pavement is provided at the installation site, it may be removed as necessary. As a condition that can be implemented by this driving means, deformation or damage that affects the horizontal support force of the protective fence foundation when receiving external external force in the horizontal direction may occur against the tip resistance force and the peripheral friction force received from the ground. It has a high strength and rigidity.

The base member having the above-described configuration is made of steel having a weight of about 30 to 50 kg, has the strength and rigidity described above, and is provided with the friction plate 21 in a vertical direction so as not to receive resistance to earth pressure. Therefore, it can be buried smoothly in the ground while maintaining the vertical posture by the driving means. In the driving process, the vertical friction plate 21 serves as a guide plate (position shift prevention plate), and the angle steel 3 provided at the lower end of the hollow rectangular steel pipe 11 is used for soil (subbase and roadbed components). ) Can be prevented from entering the interior.
When the base member is installed by the driving means, that is, when the base member is configured to be driven, the work for excavating the ground can be omitted as compared with the excavating means, so that the working time can be significantly reduced. There is almost no excavated soil to be disposed of, and the underground is compacted to increase the horizontal resistance of the foundation.
After the foundation member is installed, a pillar is erected in the hollow part 1a of the foundation member, and if necessary, a solidifying material such as mortar is poured into a gap formed between the pillar and the hollow part 1a to erect the pillar. I do. Next, the support column erecting work is performed for each predetermined portion in the road extension direction, and a pipe member, a cable member, or a fence member such as a beam member is appropriately erected between the support columns that have been erected, whereby a guard pipe, Construction of road protection fences such as guardrails or guard cables.

Although the friction plate 21 according to the present embodiment is provided in the vertical direction in consideration of implementation by the driving means, it is needless to say that the friction plate 21 is provided in the horizontal direction when implemented by the excavation means. it can.
In addition, as described above, the strut is built in the hollow portion 1a to form a protective fence, but is not limited to this. The strut is formed in the hollow portion formed by the left and right H-shaped steel members 12, 12. It is possible to realize a structural design that is flexible, for example, it can be built and implemented.
Further, the base member is made of steel (metal), but is not limited to this. The base member is formed in a wall shape that is more susceptible to earth pressure in the direction of road extension, and the rotation suppressing member 2 is formed in the direction orthogonal to the road. If it can be attached, it can also be implemented with a concrete structure or a combination structure (type) of steel and concrete.

In the present embodiment, when the base member is driven by the driving machine, as shown in FIG. 16, the base unit 7 a mounted on the top end of the base member and the base unit 7 a This is implemented using a steel jig 7 having a downwardly protruding portion 7b that can be inserted into the hollow portion 1a of the hollow rectangular steel pipe 11.
This steel jig 7 serves not only as a cushioning material for preventing damage to the base member, but also for distributing the pressing force of the driving machine in a well-balanced manner over the entire base member, and reliably driving the base member into the ground. Fulfill. Further, the steel jig 7 can be driven straight against the ground. Incidentally, the steel jig 7 according to the present embodiment is integrated by welding and joining means in a form in which a hollow steel pipe is vertically penetrated substantially in the center of a plate large enough to cover the base member in a planar manner. It is formed.
Then, the steel jig 7 is set on the base member by inserting a projecting portion 7b below the plate (base portion 7a) of the hollow steel tube into the hollow portion 1a of the hollow rectangular steel tube 11. By mounting the projecting portion above the plate on the lower end of the driving portion of the driving machine, the driving operation by the driving machine is performed.
After the base member has been driven into the ground by a driving machine, the steel jig 7 is removed, and the work of erection of the columns is started.

Incidentally, the implementation means described in the above paragraph [0032] is not limited to the first embodiment, but can be similarly implemented when implemented by the driving means according to each embodiment described below.
Further, as the driving machine, a support driving machine (air striker) used for driving the support of the road protective fence into the ground is preferable, but a press driving machine used for pressing the steel sheet pile into the ground is also preferable. Can be implemented. Therefore, in the present specification, the term “drive machine” is defined to include a press-fitting machine.

FIG. 2 illustrates a base member of the road protection fence according to the second embodiment.
The base member of the second embodiment is different from the base member of the first embodiment in that a hollow rectangular steel tube 13 that is long in the direction of road extension is used instead of the H-shaped steel members 12 provided on the left and right of the hollow rectangular steel tube 11. The points are mainly different. The other hollow rectangular steel pipe 11, the angle iron 3 (not visible in the drawing), and the friction plate 21 are the same members as those in the first embodiment, and thus are denoted by the same reference numerals and description thereof will be omitted.
According to the base member according to the second embodiment, similarly to the base member according to the first embodiment, the wall-shaped member 1 including the hollow portion 1a for receiving the support post and formed to be long in the road extending direction; Since the rotation control member 2 (the friction plate 21) is provided to protrude toward the roadway side V of the member 1, the same operation and effect as those of the first embodiment can be obtained.

  In other words, it is possible to suppress a sharp decrease in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member. A road protection fence capable of fulfilling the requirements can be realized. In addition, since the base members can be manufactured compactly using the members 11, 3, 13, and 21 that can be easily procured, a base member excellent in handling and workability, and furthermore, a road protective fence can be realized. Further, the base member having the above-described configuration is made of steel having a weight of about 30 kg, has the strength and rigidity described above, and is provided with the friction plate 21 in a vertical direction so as not to receive resistance to earth pressure. Therefore, it can be buried smoothly in the ground while maintaining the vertical posture by the driving means (for details, see paragraphs [0030] to [0033] as appropriate).

FIG. 3 illustrates a base member of the road protection fence according to the third embodiment.
The basic member of the third embodiment is different from the basic member of the second embodiment mainly in that a hollow rectangular steel pipe 13 ′ having a width (slim size) thinner than the hollow rectangular steel pipe 13 is used. The other hollow rectangular steel pipe 11, angle iron 3, and friction plate 21 are the same members as those in the first and second embodiments, and thus are denoted by the same reference numerals and description thereof will be omitted.
According to the base member of the third embodiment, similarly to the base members according to the first and second embodiments, the wall-shaped member 1 including the hollow portion 1a for receiving the support column and formed to be long in the road extending direction; The rotation-inhibiting member 2 (friction plate 21) is provided so as to protrude toward the roadway side V of the wall-shaped member 1, so that the same operation and effects as those of the first and second embodiments are obtained.

  In other words, it is possible to suppress a sharp decrease in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member. A road protection fence capable of fulfilling the requirements can be realized. In addition, since the base member can be manufactured compactly using the members 11, 3, 13 ', and 21 that can be easily procured, a base member excellent in handling and workability, and furthermore, a road protective fence can be realized. Further, the base member having the above-described configuration is made of steel having a weight of about 30 kg, has the strength and rigidity described above, and is provided with the friction plate 21 in a vertical direction so as not to receive resistance to earth pressure. Therefore, it can be buried smoothly in the ground while maintaining the vertical posture by the driving means (for details, see paragraphs [0030] to [0033] as appropriate).

FIG. 4 illustrates a base member of the road protection fence according to the fourth embodiment.
The base member of the fourth embodiment differs from the base member of the second embodiment (FIG. 2) mainly in the number of friction plates 21 and the location of the friction plates 21. The other components are the same as those of the second embodiment, and therefore, are denoted by the same reference numerals and description thereof will be omitted.
According to the base member of the fourth embodiment, similarly to the base member according to the second embodiment, the wall-shaped member 1 including the hollow portion 1a for receiving the support, and formed to be long in the road extending direction, and the wall-shaped member 1 The rotation preventing member 2 (friction plate 21) is provided so as to protrude toward the roadway side V of the member 1, so that the same operation and effect as those of the second embodiment can be obtained.

  In other words, it is possible to suppress a sharp decrease in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member. A road protection fence capable of fulfilling the requirements can be realized. In addition, since the base members can be manufactured compactly using the members 11, 3, 13, and 21 that can be easily procured, a base member excellent in handling and workability, and furthermore, a road protective fence can be realized. Further, the base member having the above-mentioned configuration is made of steel having a weight of about 40 kg, has the above-described strength and rigidity, and is provided with the friction plate 21 in a vertical direction so as not to receive resistance to earth pressure. Therefore, it can be buried smoothly in the ground while maintaining the vertical posture by the driving means (for details, see paragraphs [0030] to [0033] as appropriate).

FIG. 5A illustrates a base member of the road protection fence according to the fifth embodiment.
The base member of the fifth embodiment is different from the base members of the first to fourth embodiments in that the wall-shaped member 1 and the rotation suppressing member 2 are constituted by a combination of bent steel plates 15, 16 and flat steel plates 17, 18. Is different.
Specifically, the base member of the fifth embodiment includes a substantially U-shaped bent steel plate 15 having a flat portion 15a and bent portions 15b, 15b at both ends thereof, and a roadway side at the center of the flat portion 15a. V; a pair of flat steel plates 17, 17 provided on the right and left sides of the road side V side of the bent steel plate 16 to form the hollow portion 1 a; The steel plate 16 is made up of a flat steel plate 18 that covers the lower part of the hollow portion 1a, and the contact portions of the members 15, 16, 17, 18 are integrated by welding and joining means.
FIG. 5B shows a basic member having a configuration in which the flat steel plate 18 is replaced by the angle steel (angle) 3 described in the first embodiment and the like. Hereinafter, the basic members shown in FIGS. 5A and 5B will be described collectively.
According to the foundation member of the fifth embodiment, similarly to the foundation members according to the first to fourth embodiments, the wall-shaped member 1 including the hollow portion 1a for receiving the support, and formed long in the road extending direction, The rotation-inhibiting member 2 (projection of the bent steel plate 15b serving as the friction plate 21) provided to protrude toward the roadway side V of the wall-shaped member 1 is the same as in the first to fourth embodiments. It has the function and effect of.

  In other words, it is possible to suppress a sharp decrease in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member. A road protection fence capable of fulfilling the requirements can be realized. In addition, since the base member can be manufactured compactly with the members 15, 16, 17, 18 (or 3) that are easy to procure materials, a base member excellent in handling and workability, and eventually a road protection fence is realized. it can. Further, the base member having the above-described configuration is made of steel having a weight of about 30 kg, has the above-described strength and rigidity, and has the rotation suppressing member 2 (a protruding portion of the bent steel plate 15b serving as the friction plate 21). Is provided in the vertical direction so as not to receive resistance to earth pressure, so that the driving means can be buried smoothly in the ground while maintaining the vertical posture (for details, see paragraphs [0030] to [0033] as appropriate).

FIG. 6 illustrates a base member of the road protection fence according to the sixth embodiment.
The basic member of the sixth embodiment differs from the basic member of the first embodiment (FIG. 1) mainly in that a supporting plate 22 is used instead of the friction plate 21 used as the rotation suppressing member 2. . Incidentally, the support plate 22 according to the illustrated example employs an angle member 22 and is integrally provided by welding and joining means in such a configuration as to protrude horizontally at the upper end of the side wall W of the wall-shaped member 1. The other components are the same as those in the first embodiment, and therefore, are denoted by the same reference numerals and description thereof will be omitted.
According to the base member of the sixth embodiment, although the supporting plate 22 protruding toward the sidewalk side W is used instead of the friction plate 21 protruding toward the roadway side V, the configuration is changed to a configuration in which the rotation suppressing member 2 is provided in the direction orthogonal to the road. There is no.

  In other words, it is possible to suppress a sharp decrease in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member. A road protection fence capable of fulfilling the requirements can be realized. Further, since the base member can be manufactured compactly with the members 11, 3, 12, and 22 that can be easily procured, a base member excellent in handling and workability, and furthermore, a road protective fence can be realized. Further, the base member having the above structure is made of steel having a weight of about 50 kg and has the above-described strength and rigidity, and the supporting plate 22 is used to be placed on the ground, so that the supporting member 22 does not interfere with the driving means. Therefore, it can be buried smoothly in the ground while maintaining the vertical posture by the driving means (for details, see paragraphs [0030] to [0033] as appropriate).

  The base member shown in FIG. 8 is an embodiment in which the supporting plate 22 is merely provided on the roadway side V. The base member shown in FIG. 10 is a combination of FIGS. Needless to say, the same operation and effect as those of the base member according to the sixth embodiment (FIG. 6) can be obtained.

FIG. 7 illustrates a base member of the road protection fence according to the seventh embodiment.
The base member of the seventh embodiment is different from the base member of the sixth embodiment (FIG. 6) in that, instead of the H-shaped steel members 12 provided on the left and right sides of the hollow rectangular steel tube 11, the same shape and the same size as the steel tube 1 are used. The main difference is that a hollow rectangular steel pipe 14 having a height of 500 mm in cross section is used. The other components are the same as those of the sixth embodiment, and therefore, are denoted by the same reference numerals and description thereof will be omitted.
According to the base member of the seventh embodiment, there is only a difference between the H-shaped steel 12 and the hollow rectangular steel pipe 14 as compared with the sixth embodiment.

  In other words, it is possible to suppress a sharp decrease in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member. A road protection fence capable of fulfilling the requirements can be realized. In addition, since the base members can be manufactured compactly using the members 11, 3, 14, and 22 from which materials can be easily procured, a base member excellent in handling and workability, and furthermore, a road protective fence can be realized. Further, the base member having the above structure is made of steel having a weight of about 40 kg and has the above-described strength and rigidity, and the supporting plate 22 is used to be placed on the ground, so that the supporting member 22 does not interfere with the driving means. Therefore, it can be buried smoothly in the ground while maintaining the vertical posture by the driving means (for details, see paragraphs [0030] to [0033] as appropriate).

  The base member shown in FIG. 9 is an embodiment in which the support plate 22 is merely provided on the road side V. The base member shown in FIG. 11 is a combination type of FIGS. Needless to say, the same operation and effect as those of the base member according to the seventh embodiment (FIG. 7) can be obtained.

FIG. 12 shows a base member of the road protection fence according to the eighth embodiment.
The base member of the eighth embodiment is different from the base member of the seventh embodiment (FIG. 7) mainly in that a bottom plate 23 is used instead of the support plate 22 used as the rotation suppressing member 2. . Incidentally, the bottom plate 23 according to the illustrated example is made of flat steel with a nut 5 (engaged portion) whose end is machined into a semicircular arc, and a bottom with a through hole provided at the bottom of the wall-shaped member 1. It is provided rotatably via the face plate 4. Other configurations are the same as those of the seventh embodiment, and thus the same reference numerals are given and the description thereof will be omitted.
According to the base member of the eighth embodiment, although the bottom plate 23 that projects to the roadway side V is used instead of the support plate 22 that projects to the sidewalk side W, the rotation suppressing member 2 is provided in the direction orthogonal to the road. There is no change in composition.

  In other words, it is possible to suppress a sharp decrease in the supporting force of the entire protective fence and, consequently, a large deformation of the fence member. A road protection fence capable of fulfilling the requirements can be realized. In addition, since the base members can be manufactured compactly using the members 11, 3, 14, 23, and 4 from which materials can be easily procured, a base member excellent in handling and workability, and furthermore, a road protective fence can be realized. Furthermore, since the base member having the above-described configuration is made of steel having a weight of about 40 kg, and has the above-described strength and rigidity, the support plate 22 is configured to be able to be taken in and out, and does not hinder the driving means. The driving means can be buried smoothly in the ground while maintaining the vertical posture (for details, see paragraphs [0030] to [0033] as appropriate).

When the bottom plate 23 is implemented by a driving means, it is preferable that the bottom plate 23 be implemented in a shape that fits in a plane area of the wall-shaped member 1 in plan view. After the base member has been driven by the driving means of the driving machine, the bottom plate 23 is rotated by engaging with the nut 5 from above the hollow rectangular steel pipe 14 and rotating it by an impact wrench using a long socket. Stick out like.
Further, as shown in FIG. 13, when the operation is performed using the long bottom plates 24, 24 of the overlap type, the soil (the roadbed, the components of the roadbed, etc.) enters the hollow portion 1 a by the lap effect. Since this can be prevented, the present invention can also be implemented with a normal-type hollow rectangular steel pipe 14 in which the angle iron 3 is not attached to the portion where the column is built.
Further, as shown in FIG. 14, the configuration of the wall-shaped member 1 in which the hollow rectangular steel pipe 11 and the H-shaped steel 12 are combined as in the first embodiment and the like can be similarly implemented. Incidentally, the bottom plate 25 according to the illustrated example is a variation of the bottom plate 23.

Although the embodiments have been described with reference to the drawings, the present invention is not limited to the illustrated examples, and includes a range of design changes and application variations usually performed by those skilled in the art without departing from the technical idea thereof. I will mention it just in case.
For example, the rotation suppressing member 2 is not limited to any one of the friction plate 21, the supporting plate 22, and the bottom plates 23 to 25, and as illustrated in FIG. 15A, the friction plate 21 and the bottom plate 23 (to 25). 15), or as shown in FIG. 15B, the supporting plate 22 and the bottom plate 23 (（25), for example.
If the lower projecting portion 7b of the steel jig 7 shown in FIG. 16 is formed into a solid rod shape inscribed in the hollow rectangular steel pipe 11 or a hollow rod shape with a bottom lid, the driving is performed. In some cases, since the soil (the roadbed, the structure of the roadbed, and the like) does not enter the inside of the hollow rectangular steel pipe 11 at all, the embodiment can be carried out without the angle iron 3 (a downwardly convex lid member).

DESCRIPTION OF SYMBOLS 1 Wall-shaped member 1a Hollow part 11 Hollow rectangular steel pipe 12 H-shaped steel 13 Hollow rectangular steel pipe 13 'Hollow rectangular steel pipe 14 Hollow rectangular steel pipe 15 Bent steel plate 15a Flat part 15b Bent part 16 Fold steel plate 17 Flat steel plate 18 Flat steel plate 2 Rotation prevention member DESCRIPTION OF SYMBOLS 21 Friction plate 22 Support plate 23 Bottom plate 24 Bottom plate 25 Bottom plate 3 Angle iron 4 Bottom plate 5 Nut 6 Bottom plate 7 Steel jig 7a Base 7b Projection V Roadway side W Sidewalk side

Claims (10)

A foundation member buried underground to support the pillars of the road protection fence,
A wall-shaped member including a hollow portion that receives the support, and formed to be long in the road extension direction,
A rotation suppressing member provided to protrude toward the roadway side and / or the sidewalk side of the wall-shaped member;
A base member for a road protection fence, comprising:   2. The wall-shaped member according to claim 1, wherein the wall-shaped member is formed by joining any one or a combination of two or more of a hollow rectangular steel pipe, an H-shaped steel, a bent steel plate, and a flat steel plate. 3. Base material for road protection fence.   The foundation of the road fence according to claim 1, wherein the rotation suppressing member is one or a combination of two or more of a friction plate, a support plate, and a bottom plate. 4. Element.   The base member of the road fence according to claim 3, wherein the friction plate is provided so as to protrude vertically and / or horizontally on the roadway side of the wall-shaped member.   The base member of the road protection fence according to claim 3, wherein the support plate is provided so as to protrude horizontally at an upper end portion of the wall-shaped member on a sidewalk side.   The foundation for a road protective fence according to any one of claims 3 to 5, wherein the bottom plate is rotatably provided via a bottom plate provided at a bottom of the wall-shaped member. Element. The base member for a road protection fence according to any one of claims 1 to 6, wherein the base member is a structure that can be buried in the ground by driving with a driving machine. A base member according to any one of claims 1 to 7,
A column standing upright in the hollow part of the base member,
A fence member such as a pipe material, a beam material, or a cable material that is erected between the erected columns, and a road protection fence.   After driving the foundation member according to claim 7 into the ground by a driving machine and burying the same, a support is erected in the hollow portion of the base member, and a pipe material, a beam material, and the like are provided between the erected supports. Or a method of constructing a protective fence for a road, comprising constructing a fence member such as a cable material.   Before driving the base member into the ground by a driving machine, the steel jig provided with a base portion mounted on the top end of the base member and a downward projection insertable into the hollow portion, The method according to claim 9, wherein the projecting portion is set by inserting the projecting portion into the hollow portion, and the foundation member is removed after being driven into the ground by a driving machine. .

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