JP2005090060A - Connecting structure of steel structure protective block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting structure of a steel structure protective block capable of reducing damage of a vehicle, and capable of exhibiting the sufficient impact absorbing effect. <P>SOLUTION: A longitudinal directional end part of a first sheathing 107 and a longitudinal directional end part of a second sheathing 7, are connected by a connecting plate 40. The connecting plate 40 is composed of a first fastening part 41 fastened to the first sheathing 107 by a fastening means, a second fastening part 42 fastened to the second sheathing 7 by the fastening means, and a step part 43 for connecting both fastening parts 41 and 42. The first fastening part 41 is arranged in layers on a surface on the opposite side of the vehicle side among the first sheathing 107, and the second fastening part 42 is arranged in layers on a surface on the vehicle side of the second sheathing 7. Thus, when a vehicle collides with a first steel structure protective block 101, since the second sheathing 7 is also deformed together with the first sheathing 107, an end part 7a of the second sheathing 7 hardly sticks in the vehicle, and damage of the vehicle can be reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a connection structure of steel structure protection blocks, and more particularly to a connection structure of steel structure protection blocks installed on a bridge portion or the like of a road.

  Conventionally, by installing a protective fence on the bridge part of the road, even when a vehicle accidentally collides with the protective fence, it has been attempted to prevent the vehicle from falling through this and causing a secondary disaster. . And what constructed | assembled such a protection fence with the several steel structure protection block arranged in the vehicle running direction, and absorbed the impact of a vehicle collision by the deformation | transformation of the said block is conventionally known. .

  As shown in Patent Document 1, a conventional steel structure protection block has a structure in which a plurality of support columns extending in the vertical direction are arranged side by side in the vehicle traveling direction, and the vehicle structure is attached to the steel structure for vehicle traveling. The cover plate extends in the direction and forms a collision surface with the vehicle. And the adjacent steel structure protection block is arranged side by side so that each cover plate may become flush.

JP 2002-371518 A

  However, in the structure described in Patent Document 1, since the blocks are simply arranged side by side without being fastened, as shown in FIGS. 10 (a) and 10 (b), the front side in the vehicle traveling direction is provided. When a vehicle collides with the vicinity of the block 1 which adjoins the vehicle advancing direction back | inner side among the blocks 101 located, the following problems will arise.

  That is, although the cover plate 107 of the block 101 is pushed and bent by the vehicle and is deformed, the cover plate 7 of the block 1 is not deformed. Therefore, the end portion 7a of the cover plate 7 arranged flush with the cover plate 107 is the vehicle. The positional relationship is opposed to. Then, the end portion 7a of the cover plate 7 pierces the vehicle, and as a result, damage to the vehicle increases.

  Moreover, in the conventional structure in which the blocks are not fastened as described above, the impact of the vehicle collision must be absorbed by each of the blocks 101 and 1 alone, so that the protective fence can exhibit a sufficient impact absorbing effect. Can not.

  Therefore, the subject of this invention is providing the connection structure of the steel structure protection block which can exhibit the sufficient impact absorption effect while reducing the damage of a vehicle.

  In view of the above problems, in the first aspect of the present invention, the first steel structure formed by arranging a plurality of support columns extending in the vertical direction in the vehicle traveling direction and the first steel structure are attached to the first steel structure, and the vehicle traveling direction A second steel structure in which a first steel structure protection block composed of a first cover plate extending in the direction of the vehicle and forming a collision surface with the vehicle and a plurality of support columns extending in the vertical direction are arranged side by side in the vehicle traveling direction. And a second steel structure protection block that is supported by the second steel structure and that includes a second cover plate that extends in the vehicle traveling direction and forms a collision surface with the vehicle. 2 The steel structure protection block is arranged side by side so that the first and second cover plates are flush with each other, and connects the longitudinal end portion of the first cover plate and the longitudinal end portion of the second cover plate. And the connection plate is fastened to the first cover plate by the first fastening means. The first fastening portion, the second fastening portion fastened to the second cover plate by the second fastening means, and a step portion connecting the first and second fastening portions, and the first fastening portion, It arrange | positions so that it may overlap with the surface on the opposite side to a vehicle side among the 1st cover plates, and it has arrange | positioned it so that it may overlap with the surface of the vehicle side of a 2nd cover plate.

  Accordingly, as illustrated in FIGS. 9A and 9B, the first steel structure protection block is disposed on the front side in the vehicle traveling direction, and the second steel structure protection block is disposed in the vehicle traveling direction. Even if the vehicle collides with the vicinity of the second steel structure protection block in the first steel structure protection block, the second cover plate is connected to the first cover plate with the connection plate. Therefore, the second cover plate is also deformed together with the first cover plate. Therefore, since it can avoid that the edge part of a 2nd cover board becomes a positional relationship which opposes a vehicle, the edge part 7a of the cover board 7 becomes difficult to pierce a vehicle, and damage to a vehicle can be reduced.

  According to the invention described in claim 1, since the first and second steel structure protection blocks are connected by the connecting plate, the vehicle as illustrated in FIGS. 9 (a) and 9 (b). Even if the vehicle collides, not only the first steel structure protection block but also the second steel structure protection block is deformed to absorb the impact of the vehicle collision, so that a sufficient shock absorbing effect is exhibited. be able to.

  Furthermore, according to the first aspect of the present invention, the first fastening portion of the connecting plate is arranged so as to overlap the surface of the first cover plate opposite to the vehicle side, and the second fastening portion is covered with the second cover. Since the plate is disposed so as to overlap the vehicle-side surface, when the vehicle collides as illustrated in FIGS. 9A and 9B, the first fastening portion is pressed against the first cover plate, The second fastening portion presses the second cover plate. Therefore, the force concerning each fastening means can be reduced and it can suppress that fastening is removed.

  Moreover, according to the first aspect of the present invention, since the end portion of the second cover plate is covered with the connecting plate with respect to the vehicle, it is effective that the end portion of the second cover plate pierces the vehicle. Can be suppressed.

  By the way, when the first cover plate is attached to both the left and right sides of the first steel structure protection block, a worker who performs the fastening work is provided in the internal space between the two left and right first cover plates. I can't put my hands on.

  Therefore, in such a case, in the invention described in claim 2, the first fastening means is constituted by the first bolt means and the first nut means, and either one of the first cover plate and the first fastening portion. A first bolt insertion hole into which the first bolt means is inserted, and extends in a direction in which the first and second steel structure protection blocks are arranged side by side on the other of the first cover plate and the first fastening portion. A groove portion to be inserted into the lower neck portion of the first bolt means inserted into the bolt insertion hole is formed.

  According to this, before the first and second steel structure protection blocks are arranged side by side at a predetermined position, the first bolt means is inserted into the first bolt insertion hole in advance, and the first nut means is replaced with the first bolt means. Then, the first and second steel structure protection blocks are arranged side by side in a predetermined position while inserting a groove portion in the lower neck portion of the first bolt means, and then the first bolt means is installed in the main bolt. Can be tightened. Therefore, the first fastening portion can be fastened to the first cover plate without putting a hand into the internal space, and the fastening workability can be improved.

  In the invention according to claim 3, the second cover plate is attached to both the left and right sides of the second steel structure protection block, and the second fastening means is constituted by the second bolt means and the second nut means. In either one of the second cover plate and the second fastening portion, a second bolt insertion hole into which the second bolt means is inserted is formed, and the other of the second cover plate and the second fastening portion has the first and The second steel structure protection block extends in the direction in which the second steel structure protection blocks are arranged, and a groove portion is formed to be inserted into a lower neck portion of the second bolt means inserted into the second bolt insertion hole.

  According to this, similarly to the invention described in claim 2, the second fastening portion is fastened to the second cover plate without putting a hand in the internal space sandwiched between the two left and right second cover plates. It is possible to improve the workability of fastening.

  The invention according to claim 4 is characterized in that at least one of the first and second nut means is a plate nut having a plurality of female screw portions in one plate material.

  As a result, the plate-like nut can be supported by a plurality of bolt means, so that the nut means can be prevented from rotating during the fastening operation of the bolt means, and the fastening workability can be improved. In particular, it is preferable to use the invention according to claim 4 when the internal space cannot be reached as described above.

  In the invention according to claim 5, a plurality of first and second cover plates are arranged side by side in the vertical direction, a plurality of connecting plates are provided, and the first cover plate and the second cover plate have a U-shaped cross section. A member is adopted, and the collision surface is formed by the U-shaped bottom outer surface.

  Thus, a cover board can be formed with an existing commercial item by employ | adopting a U-shaped board member for a 1st and 2nd cover board.

  Furthermore, according to the invention described in claim 5, since a plurality of portions of the first and second cover plates are connected by the connecting plate, it is exemplified in FIGS. 9 (a) and 9 (b). Thus, when the vehicle collides, the second cover plate can be reliably deformed. Therefore, the above-described vehicle damage reduction effect and impact absorption effect can be more effectively exhibited.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. FIGS. 1-6 has shown the single-piece | unit of the steel structure protection block 1 (henceforth only the protection block 1). 7 to 9 show a state in which a protection fence is constructed by connecting a plurality of protection blocks (first protection block 1 and second protection block 101). The protection fence includes a bridge portion and a central separation. It is suitable for installation on a belt or the like.

  The plurality of protection blocks 1 and 101 are arranged side by side in the vehicle traveling direction. In this embodiment, the protection block disposed on the front side in the vehicle traveling direction among the two adjacent protection blocks 1 and 101 is the first one. The protective block 101 is called a first protective block 101, and the protective block arranged on the far side in the vehicle traveling direction is called a second protective block 1. Since the structure of the second protection block 1 is the same as that of the first protection block 101, only the structure of the second protection block 1 will be described below. The description of the first protection block 101 is based on the drawing number 100 series. The description of the second protective block 1 is cited.

  As shown in FIG. 1, the protection block 1 is entirely formed as a wall body and the side surface portion is inclined so as to widen toward the end, and as shown in FIGS. 2 and 3, a plurality (four in the figure) are provided. A support 2 which is an H-shaped steel material standing upright with respect to the ground, aligned at a predetermined interval or at an appropriate interval, and a pair of left and right sets (three sets in the figure) attached to both sides of the support 2 Horizontal plate members 3 to 5 having a substantially C-shaped cross section that are arranged in the vertical direction at appropriate intervals and each member is arranged in the horizontal direction, and a pair of left and right base parts 6 provided on both sides of the lower end of the column 2. It has a steel structure composed of Moreover, the cover board 7 which consists of a multiple types of board | plate material which covers this steel structure is provided. The cover plate 7 is provided with a pair of right and left appropriate lengths and shapes of the upper side plate 8, the middle step side plate 9, the lower step side plate 10, the long base portion side plate 11, and the lower end portions of the protective block 1 respectively. Short side plate 12 for the base portion end. In addition, a single H-shaped steel cover plate 13 is provided above the support column 2 to connect the support columns 2 orthogonally. The support column 2 is not limited to the H-shaped steel material, and may be another appropriate shape such as a pipe material.

  The above-mentioned support columns 2, the horizontal plate materials 3 to 5, the base portion 6 and the cover plate 7 are all or most made of steel, so that they are excellent in shock absorption and can be easily recycled by disassembly, and the protection constituted by them. An internal space 20 is formed in the block 1, and when the protective block 1 is installed in the internal space 20, earth and sand, iron scraps and the like can be filled to increase the weight. As shown in FIG. 2, the length from one end to the other end in the longitudinal direction of the protection block 1 in this embodiment is approximately 4 m, but it may be longer than 4 m or shorter. It may be.

  Below, each part of the protection block 1 is demonstrated in detail.

  As shown in FIGS. 1, 2, and 3, the support column 2 is a plurality of (here, four) H-shaped steel members arranged in the vertical direction, and is arranged so that the recesses are in the front-rear direction. In addition, a pair of left and right base portions 6 are attached to both side surfaces of the lower portion of the support column 2 by fastening fasteners 24. In addition, bolts are formed in the plurality of screw holes on the side surface of the support column 2. The lateral plate members 3 to 5 are attached so as to extend outward in the lateral direction by tightening fittings 22 such as nuts. When installing a soundproof wall or a blindfold net (not shown) on the top of the protective block 1, a soundproof wall (or blindfold net) mounting structure 14 is attached to the upper surface of the cover plate 13 provided on the top of the support column 2. In this structure, the lower end attachment portion of the wall is attached to the soundproof wall attachment structure 14.

  As shown in FIGS. 1, 4 (a) and 4 (b), the pair of left and right horizontal plates 3 to 5 are attached to both sides of the column 2 in three stages. There are three types of shapes, each of which has a C-shaped cross section as shown in FIG. 4 (a), and outwards as it descends from the horizontal plate 3 provided at the uppermost level to the horizontal plate 5 provided at the lowest level. The length of one end bent toward the end is longer. FIG. 4B is a plan view in which a horizontal plate material bent into a C-shaped cross section is made flat, and the horizontal plate materials 3 to 5 are bent along two dotted lines 3c, 4c and 5c, respectively. Holes 3a, 4a, 5a for inserting the tightening bracket 22 and 3b, 4b, 5b for inserting the tightening bracket 23 are respectively formed in the vicinity of both ends of the horizontal plates 3-5. . At this time, the holes 3a, 4a, 5a provided on one side of the short length in contact with the support column 2 are holes for fixing to the support column 2, and the holes 3b formed on the other side bent outward. 4b and 5b are holes for fixing the cover plate 7.

  As shown in FIG. 1, FIG. 5 (a) and FIG. 5 (b), the base portion 6 is arranged in a pair on both sides of the lower portion of the support column 2, and is formed on each side of the L-shaped back base plate 6a and the back base plate 6a. Right and left wall plates 6f, 6g provided with bent portions 6d, 6e having front and left bent holes 6b, 6c attached by welding or the like, and wall plates 6f provided with holes 6h, 6i. , 6g, and a horizontal plate 6j that is horizontally fixed, and is fixed to the column 2 by inserting the fastening bracket 24 into the hole 6k provided on the surface of the back bottom plate 6a that contacts the column 2 (See FIG. 1). Holes 11a, 11b, 12a, 12b provided in one end of the base part side plate 11 or the base part end part side plate 12 and the fastening bracket 26 are inserted into the holes 6b, 6c, and the base part side plate 11 or the base part end part is inserted. The working side plate 12 is fixed, and the holes 10h and 6i are inserted through holes 10d provided in the lower end portion 10g of the lower step side plate 10 and the tightening brackets 25 to fix the lower step plate 10. The base portion 6 has a box shape having a window portion 6o opened on the side surface. Further, as shown in FIG. 5 (a), an anchor driving hole 6m is formed in the back base plate 6a of the base portion 6, and an anchor pin or anchor bolt (not shown) is driven into the base portion 6 from above. The part 6 is fixed to the ground.

  As shown in FIG. 6 (a), the upper stage side plate 8, the middle stage side plate 9 and the lower stage side plate 10 are long plate shapes having a U-shaped or U-shaped cross section, and have a U-shaped outer surface 8e and upper and lower end portions 8f. , 8g. Although only the upper side plate 8 will be described in the figure, the middle side plate 9 will be described with reference to the figure number 9 and the lower side plate 10 will be referred to with the figure number 10th. The fastening brackets 23 are inserted into the holes 8c, 9c, 10c formed in the upper and lower upper and lower end portions 8f, 8g according to the holes 3b, 4b, 5b of the lateral plates 3-5, and both sides of the protective block 1 are inserted. It is a structure attached so that it may cover. Further, as shown in FIGS. 6 (b) and 6 (c), the base portion side plate 11 and the base portion end side plate 12 attached to the base portion 6 are bent at the upper side and the lower side along the shape of the base portion 6. In this structure, the fastening hardware 25 is inserted into the holes 11c and 12c formed in accordance with the hole 6c of the base portion 6 so as to cover both sides of the lower part of the protection block 1. Further, as shown in FIGS. 3 and 6A, the base portion 6 has a predetermined shape (here, rectangular) window portion 6o so that the anchor driving hole 6d is exposed and the anchor pin or the anchor bolt can be driven from above. Therefore, the base portion side plate 11 and the base portion end side plate 12 are attached so as not to shield the window portion 6o. In addition, the structure which uses a light groove type steel as a material of the upper stage side board 8, the middle stage side board 9, and the lower stage side board 10 is preferable. By using light groove type steel, the buffering force of the upper stage side plate 8, the middle stage side plate 9, and the lower stage side plate 10 can be increased.

  As shown in FIG. 1, the cover plate 7 is attached to the horizontal plate members 3 to 5 by hooking the bent portion of the upper end portion 8 f of the upper plate 8 on the first horizontal plate 3 and the holes 3 b of the horizontal plate 3. The hole 8c provided in the upper end portion 8f of the upper stage side plate 8 is fixed by inserting the fastening bracket 23, and the bent portion of the upper end portion 9f of the middle stage side plate 9 is hooked on the second horizontal plate member 4. A hole 4b of the horizontal plate member 4, a hole 9c provided in the upper end portion 9f of the middle stage side plate 9, and a hole 8d provided in the lower end portion 8g of the upper stage side plate 8 are inserted and fixed respectively through the fastening hardware 23. The bent portion of the upper terminal portion 10f of the lower plate 10 is hooked on the third horizontal plate member 5, the hole 5b of the horizontal plate member 5, the hole 10c provided in the upper terminal portion 10f of the lower plate 10, and the middle plate 9 are respectively inserted into the holes 9d provided in the lower end portion 9g of the lower end portion 9g and fixed thereto. The fastening part 25 is inserted through the hole 6c of the base part 6, the upper hole 11c of the base part side plate 11, and the hole 10d provided in the lower end part 10g of the lower stage side plate 10, respectively. Fix it. As the horizontal plate members 3 to 5 are lowered from the first step to the third step, the length of one end bent toward the outside becomes longer. Therefore, the side surface of the protective block 1 to which the cover plate 7 is attached is inclined to the end. Formed.

As shown in FIGS. 7 and 8, the end of the cover plate 107 (hereinafter referred to as the first cover plate) 107 of the first protection block 101 and the cover plate 7 (hereinafter referred to as the second cover plate) 7 of the second protection block 1 The connecting plate 40 for connecting the end portions in the longitudinal direction is a plate material bent in a crank shape.
More specifically, the connecting plate 40 includes a first fastening part 41, a second fastening part 42, and a step part 43. The first fastening portion 41 is disposed so as to overlap the surface of the first cover plate 107 opposite to the vehicle side, and is fastened to the first cover plate 107 by the fastening metal fitting 126. The second fastening portion 42 is disposed so as to overlap the surface of the second cover plate 7 opposite to the vehicle side, and is fastened to the second cover plate 7 by the fastening metal fitting 26.

  The connecting plate 40 is provided with two groove portions 40a through which the tightening fitting 26 can be inserted at the ends of the first fastening portion 41 and the second fastening portion 42, respectively. Tightening fittings 26 are respectively inserted into the holes 8a, 9a, 10a, 12a at the left and right end portions of the upper stage side plate 8, the middle stage side plate 9, the lower stage side plate 10, and the base end portion side plate 12, and bolt insertion holes 8a, 9a, 10a are inserted. , 12a is temporarily fixed with a plate-like nut 31 having two holes. At this time, the end portion directed in the forward direction and the traveling direction of the vehicle is between the back surface of the cover plate 7 and the plate-like nut 31, and the fastening fitting 26 is disposed in the end portion directed in the direction opposite to the traveling direction of the vehicle. The groove 40a of the crank-shaped connecting plate 40 is fitted between the surfaces of the cover plate 7 so that the tightening metal fittings 26 are inserted, and the tightening metal fittings 26 are tightened to fix the connecting plate 40, thereby fixing the cover plates 7 together. . At this time, the plate-like nut 31 is supported at two points by inserting the fastening metal fittings 26 into the two female screw portions 31a and 131a formed on the plate-like nut 31, respectively. Even when the operator's hand does not reach the inside of the block 1, it is possible to suitably tighten the tightening bracket 26. At this time, instead of the plate-like nut 31, a conventional nut may be used to fix the tightening bracket 26. However, in this case, it is preferable that the nut is fixed to the cover plate 7 by welding or the like, so that co-rotation can be prevented.

  By connecting and connecting the connecting plate 40 to the connecting portion between the cover plate 7 and the cover plate 107, the vehicle A is connected to the connecting portion between the first protective block 101 and the second protective block 1 as shown in FIG. Even if the two have accidentally collided with each other, as shown in FIG. 9B, it is as if the plurality of cover plates 7 and 107 connected by the crank-shaped connection plate 40 are one cover plate 7. To absorb the shock. For this reason, the cover plate 7 facing the traveling direction of the vehicle A and facing the end portion cannot be deformed and is stuck into the vehicle A as it is, thereby overcoming the improvement that caused the vehicle A to be damaged.

  As shown in FIGS. 1, 2, and 3, the cover plate 13 is H-shaped, and a pair of L-shaped metal fittings 32 are fixed to the back surface by fastening metal fittings 27 to a width that can be fitted to the column 2. The support plate 13 is fixed by fitting the support 2 to the L-shaped metal fitting 32 and welding it. There is a case where a soundproof wall or a blindfold net (not shown) is installed on the upper part of the protective block 1, and in that case, a soundproof wall (or a blindfold net) attached to the column 2 for installing the soundproof wall (or blindfold net) is installed. In accordance with the location of the structure 14, a concave portion on one surface of the base tube 14a that forms a concave portion on both sides is fitted and attached to each of the fastening brackets 27 to which the L-shaped metal fitting 32 is attached, and a concave shape on the other end of the base tube 14a is attached. The connecting rod 14f of the mounting structure 14 is fitted to the part and protrudes. When connecting a plurality of lid plates 13, fastening fasteners 26 are inserted and fixed into holes 13 a provided on both sides of both ends of lid plate 13 and holes 41 a of connecting plate 41 that is a rectangular plate-like body. Then, the lid plate 13 and the lid plate 113 are coupled by inserting the fastening metal fitting 126 through the hole 41a of the coupling plate 41 and the hole 113a of the lid plate 113 for coupling.

  As shown in FIGS. 1, 2 and 3, the mounting structure 14 is provided with a base tube 14a at each of the fastening brackets 27 fixing the L-shaped bracket 32 to the cover plate 13, and upright from the base tube 14a. A pair of connecting plates 14e that are bent toward the mounting direction of a soundproof wall (or a blindfolded net) that includes a plurality of connecting rods 14f and that have mounting holes 14d arranged in the center are opposed to the lid plate 13. It is to be prepared.

Next, the transportation method and installation of the protection block 1 in this embodiment will be described.
First, the support column 2, the horizontal plate members 3 to 5, the base portion 6, the upper side plate 8, the middle side plate 9, the lower side plate 10, the base side plate 11, the base end plate 12 that are manufactured in advance at a manufacturing site such as a factory, Iron parts such as the connecting plates 40 and 41 and the cover plate 13 are transported by truck and assembled and installed at the construction site. Or it is good also as a form which assembles the protection block 1 beforehand in a factory etc., conveys to the construction site in the state made into the finished product of the protection block 1, and installs. In any case, since it is made of iron, it is lighter than a concrete protection block, and the burden of transportation and the burden of construction described in detail below are greatly reduced.

  The assembling method is as follows. The base portion 6 is attached to both sides of the lower portion of the support column 2 with the fastening bracket 24, and the three-stage horizontal plates 3 to 5 are attached from the upper portion of the support column 2 with the fastening fixture 22, thereby constituting a steel structure. The upper side plate 8 is attached to the plate member 3, the middle plate 9 is attached to the horizontal plate member 4, and the lower plate 10 is attached to the horizontal plate member 5 with the fastening metal fittings 23, and the foundation side plate 11 or the base part end side plate 12 is fastened to the foundation part 6. 25 and 26 are attached to all the struts 2 (four in the figure) to form a wall body on the steel structure, and the lid body 13 having the L-shaped metal fitting 32 on the back surface is attached to the upper end of the strut 2. Fit it into the position. At this time, the four support columns 2 are connected to each other by the upper stage side plate 8, the middle stage side plate 9, the lower stage side plate 10, the base part side plate 11, and the lid plate 13. If the installation location is existing pavement, the position etc. is adjusted after the pavement is processed to be flat, and then the upper side plate 8, the middle side plate 9, the lower side plate 10 and the side plate 12 for the end of the foundation part, While the connecting plate 40 is sandwiched between the upper side plate 108, the middle side plate 109, the lower side plate 110, and the foundation end side plate 112 adjacent to each other in the adjacent protection block 101, the connecting plate 40 is connected by the tightening bracket 26 and continuously aligned. Install. An anchor pin or an anchor bolt is built in the existing pavement or roadbed with or without drilling through the formed anchor driving hole 6d in advance, and the anchor is installed in the back bottom plate 6a of the base portion 6 Then, the base portion 6 and the like are fixed to the ground.

  When connecting a plurality of protection blocks, tightening fittings 26 and 126 and plate nuts are formed in holes 8a to 12a and 8b to 12b formed at both ends of the cover plate 7 of the protection block 1 and the cover plate 107 of the protection block 101, respectively. 31 and 131 are attached, and the groove 40a at one end of the connecting plate 40 is inserted between the front side surface of one cover plate 1 to be connected and the fastening bracket 26, and the groove 40a at the other end of the connecting plate 40 is inserted. It is inserted between the back side surface of the other cover plate 107 to be connected and the plate-like nut 131, and the fastening metal fittings 26, 126 are fastened to the plate-like nuts 31, 131, whereby the cover plate 7 and the cover plate 107 are connected by the connection plate 40. And

  When the protective block 1 is assembled, the internal space 20 inside the protective block 1 is filled with earth and sand, iron scraps, etc. to add weight, and is finally attached so as to cover the cover plate 13. It may be one shape. In consideration of safety, it is preferable to fill the internal space 20 with some weight-increasing material. However, when there is no need to fill with earth and sand or iron scraps due to various circumstances, it may be left empty.

  In addition, a soundproof wall or a blindfold net (not shown) can be installed on the top of the protection block 1. The cover plate 13 is formed with a connecting plate 14e having a connecting rod 14f for mounting a soundproof wall (or a blindfolded net) and a mounting hole 14d, and the soundproof wall (or a blindfolded net) mounting structure 14 has a soundproof wall ( (Or a blindfold net) is inserted and fixed with a tightening bracket. Since the protection block 1 is firmly constructed by the support 2, the horizontal plate members 3 to 5, the base portion 6, and the like, it is also suitable for installing a soundproof wall (or a blindfold net) on the upper part. Moreover, if a soundproof wall is installed in the protective block 1, it is possible to prevent the noise of automobiles and the like from leaking to the vicinity, and it is effective in reducing damage caused by noise in the vicinity. Alternatively, if a blind net is installed in the protective block 1, it can be effectively blinded from the vehicle occupants to neighboring residents.

  When a vehicle such as an automobile accidentally collides with the installed protection block 1, the support 2, the horizontal plate materials 3 to 5, the cover plate 7, etc. have a structure that absorbs and softens the impact at the time of a collision. Therefore, damage to vehicles and passengers can be kept to a minimum. In addition, by sandwiching the connecting plate 40 in the connecting portion with the other protection block 101, it is possible to strengthen the connection between the cover plates 7 and to increase the effect of absorbing and mitigating the impact at the time of a collision. Moreover, since the weight is increased by filling the internal space 20 with earth and sand, iron scraps, etc., even when a large automobile such as a truck collides accidentally, it can be prevented from falling through and causing a secondary disaster.

  Since the used protection block 1 is made of iron, it is relatively flexible and can be disassembled and reused. In addition, the iron protection block 1 is less susceptible to damage than the concrete block and can be used any number of times, so it can function as a lending device. Cost reduction can be expected. Moreover, if the natural space such as earth and sand is filled in the internal space 20, it is possible to recycle the earth and sand by returning it to the natural state after the protection block 1 is dismantled, which is also friendly to the global environment.

  As described above, by providing the connecting plate 40 at the connecting portion of the protection block 1 and the other protection block 101, the protection blocks 1 are more firmly connected to each other. Safety comparable to that of protective blocks can be secured. Furthermore, according to the protection block 1 of the present embodiment that can be freely assembled and disassembled, it is very light compared to concrete, so that the burden of transportation to the site and construction on site is reduced, and transport efficiency and assembly work efficiency are improved. Thus, a large amount of the protection block 1 can be constructed in a short time, and various expenses such as transportation costs can be reduced. In addition, since the material is less damaged and easy to use, it can also function as a lending device, which contributes to cost reduction from the cost of new purchases.

  In addition, because the cover plate is made of iron, it is easier to color the cover plate than the concrete protection block, and it is possible to identify the steel structure protection block by color and add a function as a road sign. it can.

  The embodiments of the present invention are not limited to the above-described embodiments, and modifications and the like can be made without departing from the technical idea of the present invention. It goes without saying that various forms can be adopted as long as they are included in the technical scope of the present invention and belong to the technical scope.

  Further, in the embodiment shown in FIGS. 1 to 9, the groove portion 40 a to be inserted into the lower neck portion of the bolt 26 is formed in the connecting plate 40, and the bolt insertion holes 8 a, 9 a, 10 a, and 12 a are formed in the cover plate 7. However, in the present invention, the groove portion inserted into the lower neck portion of the bolt 26 may be formed in the cover plate 7, and the bolt insertion hole may be formed in the connecting plate 40.

It is a front view of the steel structure protection block 1 of this invention embodiment. It is a side view of the steel structure protection block 1. 1 is a plan view of a steel structure protection block 1. FIG. (a) is a side view of the horizontal plate materials 3 to 5, and (b) is a plan view. (a) is a top view of the base part 6, (b) is a front view. (a) is a side view and a front view of the upper side plate 8, (b) is a side view and a front view of the base portion side plate 11, and (c) is a side view of the cover plate 7 of the base portion end side plate 12. FIG. (a) is an exploded perspective view in the case of connecting the cover plates 7 and 107 using the connecting plate 40, and (b) is a perspective view showing the connected state. (a) is the top view which showed the state before fastening fasteners 26 and 126 in the state which connected the cover plates 7 and 107 using the connection plate 40, (b) is fastening fasteners 26 and 126. It is the top view which showed the state fixed by. It is explanatory drawing which shows the effect | action of the steel structure protection block 1,101 of this embodiment. FIG. 6 is a continuous diagram showing deformation of the protection block when a vehicle collides with a connecting portion of the protection blocks 101 and 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... 2nd steel structure protection block 2 ... Support | pillar 3 ... (first stage) horizontal board material 4 ... (second stage) horizontal board material 5 ... (third stage) horizontal board material 6 ... Foundation part 7 ... 2nd cover Plate 8 ... Upper stage side plate 9 ... Middle stage side plate 10 ... Lower stage side plate 11 ... Base part side plate 12 ... Base part end side plate 13 ... Cover plate 14 ... Mounting structure 14a ... Base tube 14d ... Mounting hole 14e ... Connection plate 14f ... Connecting rod 31 ... Plate-shaped nut 32 ... L-shaped metal fitting 40 ... Crank-shaped connecting plate 40a ... Groove portion of crank-shaped connecting plate 41 ... Plate-shaped connecting plate 101 ... First steel structure protection block 107 ... First cover plate

Claims (5)

A first steel structure formed by arranging a plurality of support columns extending in the vertical direction in the vehicle traveling direction, and a first steel structure attached to the first steel structure and extending in the vehicle traveling direction to form a collision surface with the vehicle A first steel structure protection block composed of a cover plate;
A second steel structure formed by arranging a plurality of support columns extending in the vertical direction in the vehicle traveling direction, and a second steel structure supported by the second steel structure and extending in the vehicle traveling direction to form a collision surface with the vehicle. A second steel structure protection block composed of a cover plate,
The first and second steel structure protection blocks are arranged side by side so that the first and second cover plates are flush with each other,
Connecting a longitudinal end of the first cover plate and a longitudinal end of the second cover plate with a connecting plate;
A first fastening portion fastened to the first cover plate by a first fastening means; a second fastening portion fastened to the second cover plate by a second fastening means; and the first and first 2 Consists of a step part connecting the fastening part,
The first fastening portion is disposed so as to overlap the surface of the first cover plate opposite to the vehicle side,
The connection structure of the steel structure protection block, wherein the second fastening portion is disposed so as to overlap the vehicle-side surface of the second cover plate. The first cover plate is attached to the left and right sides of the first steel structure protection block,
The first fastening means is composed of first bolt means and first nut means,
Forming either one of the first cover plate and the first fastening portion with a first bolt insertion hole into which the first bolt means is inserted;
Under the neck of the first bolt means extending in the direction in which the first and second steel structure protection blocks are arranged on the other of the first cover plate and the first fastening portion, and inserted into the first bolt insertion hole. 2. The connecting structure for a steel structure protective block according to claim 1, wherein a groove portion to be inserted into the portion is formed. The second cover plate is attached to both the left and right sides of the second steel structure protection block,
The second fastening means is composed of second bolt means and second nut means,
Either one of the second cover plate and the second fastening portion is formed with a second bolt insertion hole into which the second bolt means is inserted,
Under the neck of the second bolt means, which extends in the direction in which the first and second steel structure protection blocks are arranged on the other side of the second cover plate and the second fastening portion, and is inserted into the second bolt insertion hole. The connecting structure for a steel structure protective block according to claim 1, wherein a groove portion to be inserted into the portion is formed.   4. The nut according to claim 1, wherein at least one of the first nut means and the second nut means is a plate nut having a plurality of female screw portions in one plate material. 5. Connection structure of the steel structure protective block described. A plurality of the first and second cover plates are arranged in the vertical direction, and a plurality of the connection plates are provided.
Adopting a U-shaped plate member for the first cover plate and the second cover plate,
The connection structure for a steel structure protection block according to any one of claims 1 to 4, wherein the collision surface is formed by an outer surface of the U-shaped bottom portion.

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