JP2019070242A - Concrete heavy structure, concrete heavy structure with guard fence, and guard fence structure - Google Patents

Abstract

To provide a concrete heavy structure, a concrete heavy structure with a guard fence, and a guard fence structure according to the present invention which serve as a rigid guard fence constructible only by being installed in the field without the need of construction work in the field, and also have flexibility.SOLUTION: A concrete heavy structure, a concrete heavy structure with a guard fence, and a guard fence structure according to the present invention have a foundation part 10, and a concrete guard fence fitting part 30 formed to be projected upward from said foundation part 10 and comprising a guard fence fitting surface 31 having a guard fence fixing part to which a guard fence 50 can be attached.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a concrete weight structure, a concrete weight structure with guard fence, and a guard fence structure.

  The present inventors have proposed a weight structure capable of erecting a support for a guardrail (Patent Document 1). The weight structure is a movably installed longitudinally extending block of precast concrete on the road, formed in the short direction on the lower surface of the weight structure, and for holding the first and second claws of the forklift. And first and second sling guide grooves for guiding slings formed on the upper surfaces of the first and second notches, respectively. There is.

  In such a weight structure, a support for the guardrail is erected on the upper surface of the weight structure, and the guardrail is attached to the support. According to this weight structure, it can be used as a road central separation zone or roadside separation wall, and functions as a flexible protection fence which can effectively buffer a collision of a car or the like by a guardrail.

  On the other hand, when installing on a road, there may be a need for a rigid guard fence that completely prevents the vehicle from jumping out on the opposite side of the guard fence. Generally, in such a place, it is formed and laid in a state where a cast-in-place retaining wall or a precast L-shaped retaining wall is buried in the ground.

  However, since these retaining walls and the like require construction, there is a problem that the construction period is long and the cost is high. In addition, when a rigid guard fence is needed temporarily, there is a problem that it is difficult to cope with it.

JP, 2016-35167, A

  Therefore, the present invention has been made to solve such a problem, and it is a rigid guard fence that can be constructed simply by installing it on a road without requiring on-site construction, and imparts flexibility. It is an object of the present invention to provide a concrete weight structure, a guarded concrete weight structure, and a guard fence structure that can be used.

  The present invention adopts the following means in order to achieve the above object.

The concrete weight structure according to the present invention is
The base department,
A concrete guard fence attachment section having a guard fence mounting surface which is formed to extend upward from the base section and to which a guard fence can be attached;
It is characterized by having.

  The concrete weight structure according to the present invention has a weight capable of functioning as a rigid protection fence, and a protection fence consisting of a guard pipe, a guard rail, a lateral beam, etc. is attached to the upper side of the concrete weight structure. A possible guard fence attachment is provided. Thereby, the function of a rigid guard fence can be imparted to the portion of the concrete structure, and a concrete weight structure having a function as a flexible guard fence can also be provided by a guard fence such as a guardrail attached.

In the concrete weight structure according to the present invention,
The base portion and the protective fence attachment portion may be integrally formed.

  By adopting such a configuration, the rigidity of the base portion and the guard fence mounting portion can be enhanced, and the function as a stiff guard fence can be improved.

Furthermore, in the concrete weight structure according to the present invention,
The guard fence fixing portion may be located rearward of the vehicle collision surface of the base portion where the vehicle collides.

  By adopting such a configuration, when the guard fence is attached, the distance that the guard fence projects from the base portion can be shortened.

Furthermore, in the concrete weight structure according to the present invention,
The guard fence fixing portion may be located 50 cm to 60 cm behind the vehicle collision surface of the base portion where the vehicle collides.

  By adopting such a configuration, it is possible to make a concrete weight structure suitable for using a guardrail in a guard fence.

Furthermore, in the concrete weight structure according to the present invention,
The end face in the longitudinal direction of the guard fence attachment portion may be formed inward within 75 cm from the longitudinal end portion of the base portion.

  Even in the case of a minicar, which is a relatively small vehicle, the width of the vehicle is about 150 cm or more. Therefore, by placing the concrete block for a heavy structure according to the present invention adjacently disposed within 75 cm from the longitudinal end of the base portion, the gap formed by the adjacent guard fence attachment portion Becomes 150 cm or less. By adopting such a configuration, even if the guard rail may be broken, it is possible to reliably prevent the vehicle from jumping out to the opposite side by the guard fence attachment portion.

Furthermore, in the concrete weight structure according to the present invention,
The base portion may be characterized in that a boundary between a front surface, a back surface, a right side surface and a left side surface, and an upper surface is formed by a convex curved surface.

  By adopting such a configuration, when the vehicle collides with the base portion, the vehicle can be guided to the guard fence side, and the impact to the vehicle can be effectively mitigated.

Furthermore, in the concrete weight structure according to the present invention,
The one end portion of the base portion may be formed with a substantially semi-cylindrical convex portion, and the other end portion may be formed with a substantially semi-cylindrical concave portion.

  By adopting such a configuration, adjacent concrete weight structures can be disposed adjacent to each other without gaps, and when disposed adjacent to each other, the substantially semi-cylindrical convex portion and the substantially semi-cylindrical concave portion are engaged with each other. As it becomes difficult to shift, the concrete weight structure can be made more difficult to move by collision.

Further, the present invention provides the concrete weight structure according to any one of the above,
A guard fence attached to the guard fence attachment,
To provide a concrete-made weight structure with a guard fence.

  Thus, by providing a concrete structure having a guard fence at the upper side, the function of a rigid guard fence is given at a part of the concrete structure, and a guard fence such as a guardrail also has a function as a flexible guard fence. A concrete weight structure can be provided.

  Furthermore, in the heavy structure with guard fence according to the present invention, the guard fence may be a guard rail.

  By adopting such a configuration, a more effective flexibility function can be provided.

  Furthermore, the guardrail may be characterized in that it protrudes 5 cm to 10 cm with respect to the vehicle collision surface of the base portion in the concrete-made weight structure with guard fence according to the present invention.

  By adopting such a configuration, the surface of the guardrail is formed to protrude from the vehicle collision surface of the base portion, so that when the vehicle collides, it first collides from the guardrail and cushions the impact by deflection by the guardrail. Since it abuts on the concrete structure, it is possible to soften the impact when colliding with the concrete structure.

  Furthermore, the present invention also provides a guard fence structure in which the above-described guard fenced concrete weight structure is continuously provided.

  According to the present invention, it is possible to provide a concrete weight structure that functions as a rigid guard fence that can be constructed simply by placing it on the site without requiring on-site construction, and also has flexibility. Thus, it is possible to provide a guard fenced concrete weight structure and a guard fence structure having the effect of such a concrete weight structure.

FIG. 1 is a perspective view of a protective fenced concrete weight structure 100 according to an embodiment. FIG. 2 is a front view of a protective fenced concrete weight structure 100 according to the embodiment. FIG. 3: is AA sectional drawing of the weight structure 100 with a protection fence concrete concerning embodiment. FIG. 4: is AA sectional drawing which shows another embodiment of the concrete weight structure 100 with a guard fence concerning embodiment. FIG. 5: is sectional drawing which shows the state which connected the concrete weight structure 100 with a guard fence concerning embodiment. FIG. 6 is a front view showing another embodiment of the laying state of the protective fenced concrete weight structure 100 according to the embodiment.

  Hereinafter, the weight structure 100 with a protective fence according to the embodiment of the present invention will be described in detail using the drawings. Note that the embodiments and drawings to be described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and are within the scope of the present invention. Can be changed as appropriate. Corresponding components in the drawings are denoted by the same or similar reference numerals. In addition, since the concrete weight structure 40 is included in the description of the protection fenced concrete weight structure 100, the description of the protection fenced concrete weight structure 100 corresponds to the description of the concrete weight structure 40. Take over.

  Concrete weight structure 100 with a guard fence according to an embodiment is shown in FIGS. 1 to 3. FIG. 1 is a perspective view of a protective fenced concrete weight structure 100, FIG. 2 is a front view of the protected fenced concrete weight structure 100, and FIG. FIG. 3 is a cross-sectional view of the weight structure 100 taken along line A-A of FIG. For convenience of explanation, in FIG. 1, the surfaces in the direction of the arrows are respectively referred to as front, back, right side, left side, top and bottom.

  The guard fenced concrete weight structure 100 includes a concrete weight structure 40 and a guard fence 50, as shown in FIG.

  The concrete weight structure 40 is made of a long precast-type concrete block, and has a base portion 10 and a protective fence attachment portion 30 provided on the upper surface of the base portion 10.

  The base portion 10 is a portion which is mainly installed on a road and serves as a base of the protective fenced concrete weight structure 100 on the road and which mainly functions as a rigid protective wall. Therefore, a weight that can withstand a collision of a vehicle or the like is required. Preferably, the weight including the protective fence attachment portion 30 may have a weight of 2000 kg or more. The base portion 10 is formed to be elongated as a whole, and the front in the figure constitutes the vehicle collision surface 11. In this embodiment, the boundary 12 between the front and right side, the boundary 13 between the front and left side, the boundary 14 between the back and right side, and the boundary 15 between the back and left side are formed by convex curved surfaces. There is. This is because if the acute angle is formed, a force is applied to one point when a vehicle or the like collides, and the shock absorbing effect of the collision becomes low. In addition, boundaries 16 between the front, back, right and left sides, and the upper surface are also formed as convex curved surfaces. This is to guide the vehicle that has collided to move to the upper guard fence 50 side so that a force is applied to the flexible side. In addition, a semi-cylindrical convex portion 18 a formed in a substantially semi-cylindrical shape is formed in the longitudinal direction on any one end face (left side or right side in the drawing) of the base portion 10 in the longitudinal direction, The other end face is formed with a semi-cylindrical recess 18 b formed in a substantially semi-cylindrical shape. Further, on the upper side of the both end faces, a fixing slope 19 formed obliquely so as to lower the end face side is formed. The fixing slope 19 is a surface to which a metal fitting used for fixing with the guard fenced concrete weight structure 100 disposed adjacent thereto is attached. Moreover, in order to ensure the installation stability to a road surface, as shown in FIG. 1, you may provide the overhang | projection part 21 below the front and back. In addition, in this embodiment, although it produces in the form mentioned above, it is not limited to this form, The weight (guard rail attachment part which can ensure the function as a rigid guard fence with respect to the collision of a vehicle) For example, a rectangular parallelepiped, a truncated pyramid, or the like may be used as long as it has a weight of 20) and can be disposed stably.

  The protective fence attachment portion 30 is a concrete wall surface formed to extend above the base portion 10 and has a thickness sufficient to withstand a collision of a vehicle. Preferably, it has a thickness of 20 cm or more. The guard fence mounting portion 30 has a guard fence mounting surface 31 to which a guard fence 50 such as a guard pipe or a guard rail is attached (see FIG. 3). The protective fence mounting surface 31 is provided on the same front side as the vehicle collision surface 11 of the base portion 10. A guard fence fixing portion 35 for mounting the guard fence 50 is provided on the guard fence mounting surface 31. The protective fence fixing portion 35 is provided with, for example, a bolt fixing hole 38 for fixing the protective fence 50 with a bolt 80 or the like, or as shown in FIG. It is provided on the surface 31. By using such a bracket 25, the distance between the protective fence 50 and the protective fence mounting surface 31 is increased, so that the amount of deflection of the protective fence 50 can be increased, and the buffer can be effectively buffered. become. In addition, it is preferable that the guard fence fixing unit 35 be disposed on the rear side of the vehicle collision surface 11 of the base unit 10. This is to suppress a large overhang (B) of the guard fence 50 in order to install the foundation portion 10 as close as possible to the planned boundary line. Preferably, the side surface of the mounted guard fence 50 is provided so as to protrude from the vehicle collision surface 11 of the base portion 10 by about 5 cm to 10 cm. For example, since the thickness of the general guard rail 90 is generally formed to a thickness of about 60 cm to 70 cm (width of A in the figure), the width between the guard fence fixing portion 35 and the vehicle collision surface 11 is It is good to provide about 50 cm-60 cm about 5 cm-10 cm width narrower than the thickness of a guardrail. By mounting the guardrail in such a position, the vehicle can be reliably supported by the base portion 10 on the lower side while effectively buffering the upper side of the vehicle with the guardrail. By providing such a protective fence attachment portion 30, there is also an effect that the width of the front surface (vehicle collision surface 11) of the base portion 10 and the rear surface can be made narrow. That is, since it is necessary to secure the weight if it is a low weight structure as in the prior art, it is necessary to widen the bottom width to secure the weight. Since the weight of the guard fence attachment portion 30 is also added because it is manufactured in the above, the width of the base portion 10 can be narrowed. In addition, it does not exclude that the surface of the guard fence 50 is arrange | positioned behind the vehicle collision surface 11 of the base part 10 at the rear side.

  The guard fence 50 is not particularly limited, and any existing guard fence can be selected as needed as long as it functions as a flexible guard fence such as a guard pipe, a lateral beam, a guard rail or the like.

  The protective fenced concrete weight structure 100 manufactured in this manner is used by connecting a plurality of protective fenced concrete weight structures 100. When connecting, as shown in FIG. 5, the semi-cylindrical convex portion 18 a formed on the base portion 10 of the protective fenced concrete weight structure 100 and the adjacent contiguous concrete fenced light weight structure 100. It arrange | positions so that the formed semi-cylindrical recessed part 18b may be fitted. By arranging so as to fit each other in this way, the weight structure 100 made of concrete with protection fence can resist the weight of the weight structure 100 made of concrete with protection fence even when it is collided with a vehicle etc. As a result, it becomes more difficult to move and can further improve its function as a rigid guard fence. Further, by combining the semicircles as in the semi-cylindrical convex portion 18a and the semi-cylindrical concave portion 18b, the fitted state is maintained not only at 180 ° but also when arranged at an angle to each other. The above functions can be secured.

  Furthermore, as shown in FIG. 5, in order to make the connection between each other stronger, as shown in FIG. 5, a substantially V-shaped fixing that can be fixed to the fixing slopes 19 of two adjacent concrete fenced concrete weight structures 100. The fitting 60 may be attached and fixed. Thus, the adjacent protection fenced concrete weight structures 100 are firmly fixed to each other.

  The guard fenced concrete weight structure 100 thus laid can construct a guard fence structure only by laying in a desired place without requiring construction. The constructed guard fence structure functions as follows. When a vehicle or the like collides, first, the impact is absorbed by a guard fence 50 such as a guard rail that protrudes from the vehicle collision surface 11 of the base portion 10. In this case, the deflection of the guard fence 50 functions as a flexible guard wall. Thereafter, due to the degree of deflection of the protective fence 50, the vehicle collides with the collision surface 11 of the base portion 10. In this case, it is possible to reliably prevent the collision vehicle from jumping out to the opposite side of the base portion 10 with little movement of the protective fenced concrete weight structure 100. Depending on the size, the vehicle may be repelled by the base portion 10 or may be guided toward the upper protection fence 50 by a convex curved surface formed on the upper surface of the vehicle collision surface 11 of the base portion 10. The vehicle guided to the protection fence 50 side further absorbs the impact by the protection fence 50 bending to the back side of the vehicle collision surface 11 of the base portion 10 due to the collision of the vehicle. Furthermore, even if the impact force of the vehicle is strong and the deflection of the guard fence 50 reaches the guard fence mounting surface 31 and the shock can not be absorbed any more, the guard fence mounting surface 31 is not broken. Will surely cause the vehicle to bounce back.

  As described above, according to the weight structure 100 with guard fenced concrete according to the present invention, the protection fence structure having both functions of the flexible guard fence and the rigid guard fence can be constructed simply by installing. .

  In the embodiment described above, the protection fence 50 is attached to one concrete weight structure 40, but as shown in FIG. 6, the protection fence is attached so as to straddle a plurality of concrete weight structures 40. It is good.

  Moreover, in the embodiment mentioned above, although the overhang | projection part 21 was provided below the front and back, you may provide in any one of a front or back, and it is not necessary to provide.

  The concrete weight structure 40 according to the present invention can also be used as a rigid guard fence by using it alone without attaching a guard fence.

  As shown in the above-mentioned embodiment, it can be industrially used as a guard fence.

DESCRIPTION OF SYMBOLS 10 ... Foundation part, 11 ... Vehicle collision surface, 12 ... Boundary, 13 ... Boundary, 14 ... Boundary, 15 ... Boundary, 16 ... Boundary, 18a ... Semicylindrical convex part, 18b ... Semicylindrical concave part, 19 ... For fixation Slope, 20: guard rail attachment portion, 21: overhang portion, 25: bracket, 30: guard fence attachment portion, 31: guard fence attachment surface, 35: guard fence fixing portion, 40: concrete weight structure, 50: guard Fence, 60 ... mounting bracket, 80 ... bolt, 90 ... guard rail, 100 ... concrete weight structure with guard fence

Claims (10)

The base department,
A concrete guard fence attachment section comprising a guard fence fixing section having a guard fence fixing section which is formed to extend upward from the base section and to which a guard fence can be attached;
A concrete weight structure characterized by comprising:   The concrete weight structure according to claim 1, wherein the guard fence fixing portion is located rearward of a vehicle collision surface of the base portion where a vehicle collides.   The concrete weight structure according to claim 1 or 2, wherein the guard fence fixing portion is located 50 cm to 60 cm behind the vehicle collision surface of the base portion where the vehicle collides.   4. The concrete according to any one of claims 1 to 3, wherein the end face in the longitudinal direction of the guard fence attachment portion is formed inward within 75 cm from the end portion in the longitudinal direction of the base portion. Weight structure.   The concrete according to any one of claims 1 to 4, wherein a boundary between the front surface, the back surface, the right side surface and the left side surface, and the upper surface is formed by a convex curved surface. Weight structure.   A substantially semi-cylindrical convex portion is formed at one end of the base portion, and a substantially semi-cylindrical concave portion is formed at the other end. A concrete weight structure according to any one of the preceding claims. The concrete weight structure according to any one of claims 1 to 6,
A guard fence attached to the guard fence attachment,
A concrete weight structure with a guard fence characterized by comprising   The guard fenced concrete weight structure according to claim 7, wherein the guard fence is a guard rail.   The guard fenced concrete weight structure according to claim 8, wherein the guard rail protrudes 5 cm to 10 cm with respect to the vehicle collision surface of the base portion. The guard fence structure which the concrete weight structure with guard fences of any one of Claim 7 to 9 carries out in a line connection.

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