JP7032802B2 - Protective wall installation method and continuous protective wall - Google Patents

Description

The present invention relates to a method of installing a protective wall which is installed in a median strip and a roadside zone of a highway or a general road to decelerate, stop, or change a direction of a vehicle off a regular route.

Conventionally, multiple protective walls made of concrete or the like are placed with a gap along the direction of travel of the vehicle in the median strip and roadside zone of highways and general roads, and are connected by metal wires. Then, various methods are known in which the gaps between the plurality of protective walls are filled with mortar or the like.

For example, Patent Document 1 discloses a method of installing a plurality of protective walls. Specifically, first, a plurality of general-purpose blocks 1 and fixing blocks 2 are arranged alternately. Then, the PC steel stranded wire 5 is inserted from the opening in the notch 3 of the insertion hole 4'of the fixing block 2 of the two fixing blocks 2 sandwiching the plurality of general-purpose blocks 1, and the other. It extends from the opening in the notch 3 of the insertion hole 4'of the fixing block 2. After that, the space adjacent to each block is filled with cement mortar. Then, after waiting for the cement mortar to harden, the tension fixing work of the PC steel stranded wire 5 is performed. The reference numerals in this paragraph are the reference numerals in Patent Document 1.

Japanese Unexamined Patent Publication No. 2000-240024

However, in the method of installing the protective wall described in Patent Document 1, the space between the plurality of protective walls is filled with cement mortar, and after waiting for the curing, the metal wire is stretched and fixed. It takes about two weeks for the cement mortar filled in the space between the individual protective walls to begin to harden and reach the design standard strength, and during that time, no work should be done to stretch the metal wire that inserts multiple protective walls. There was a problem that it was not efficient and the construction period was prolonged.

Therefore, in the present invention, the construction period until a plurality of protective walls installed along the traveling direction of the vehicle in the median strip and the roadside zone of the expressway and the general road are placed and connected in succession is completed. It is intended to provide installation methods and protective barriers that can be shortened.

[1] That is, the present invention relates to the inner surface (1a · 1a) or at least one of the inner side surfaces (1a · 1a) placed at both ends in the longitudinal direction (X) of the plurality of protective walls (1). The substantially semi-cylindrical recess (11) recessed inward on the side surface (1a) and the substantially cylindrical spacer (2) integrally or separately from the protective wall (1) are in contact with each other and adjacent to the inner surface surface. A continuous installation process in which a plurality of protective walls (1) are continuously provided with a gap between (1a and 1a), and a series of protective walls (1) located inside the protective wall (1) and pierced along the longitudinal direction (X). The fixing agent (4) is formed in the gap between the wiring step of inserting and fixing the wire rod (3) through the insertion hole (12) and the inner surfaces (1a and 1a) connected to each other in the plurality of protective walls (1). It is a protective wall installation method characterized by comprising a filling step of injecting.

[2] Then, in the continuous step, the insertion hole is formed in the outer surface (1b) of at least two or more of the protective walls (1) in the lateral direction (Y) of the plurality of protective walls (1). The protective wall installation according to the above [1], wherein a hole portion (13) communicating with the (12) is provided, and the wire rod (3) is inserted through the hole portion (13) and fixed. The method.

[3] The protective wall installation method according to the above [1] or the above [2], wherein the fixing agent (4) is at least one of mortar and elastomer.

[ 4 ] Then, the plurality of protective walls (1) connected in the longitudinal direction (X) and the protective wall (1) are integrated or separate from each other in the longitudinal direction (X) in the protective wall (1). ), Which is located at both ends of the inner side surface (1a ・ 1a) or at least one of the inner side surfaces ( 1a・ 1a). A substantially columnar spacer (2) that is in contact with each other and has a gap between the adjacent inner side surfaces (1a and 1a), and is located inside the protective wall (1) and is located along the longitudinal direction (X). The fixing agent (4) injected into the gap between the wire rod (3) inserted and fixed through the drilled insertion hole (12) and the adjacent inner side surfaces (1a and 1a). It is a continuous protective wall equipped with.

[ 5 ] Then, the outer surface (1b) of at least two or more of the protective walls (1) in the lateral direction (Y) is communicated with the insertion hole (12). The continuous protective wall according to the above [ 4 ], characterized in that a hole (13) is provided.

[ 6 ] The above-mentioned [ 4 ] or the above-mentioned [ 5 ], which has a through hole (14) formed in the lateral direction (Y) on the bottom surface side (1c) of the protective wall (1). ] It is a continuous protective wall described in.
[7] Then, on the inner side surface (1a) of the protective wall (1), at the corner on the bottom surface (1c) side and the outer surface (1b) side in the lateral direction (Y) of the protective wall (1). The continuation according to any one of the above [4] to the above [6], wherein the inner side surface recessed portion (15) is provided by providing a step from the inner side surface (1 a). It is a protective wall.

According to the installation method of the present invention, it is possible to shorten the construction period until a plurality of protective walls are placed and they are connected and completed in succession.

It is a perspective view of the state in which a plurality of protective walls are placed in the first embodiment of the present invention. It is a perspective view of one protective wall in 1st Embodiment of this invention. It is an enlarged view of the part C of one protective wall in 1st Embodiment of this invention. FIG. 3 is a sectional view taken along line AA of one protective wall according to the first embodiment of the present invention. It is an enlarged view near the hole part of one protective wall in 1st Embodiment of this invention. (A) It is a top view of the state in which a plurality of protective walls are placed in the first embodiment of the present invention. (B) It is a top view of the state which installed and completed a plurality of protective walls in the 1st Embodiment of this invention. It is an enlarged view of the part D which is near the gap of two protective walls in the 1st Embodiment of this invention. It is an enlarged view of the part corresponding to the part D in the 2nd Embodiment of this invention. It is an enlarged view of the part corresponding to the part D in the 3rd Embodiment of this invention. It is an enlarged view of the part corresponding to the part D in the 4th Embodiment of this invention.

Hereinafter, embodiments relating to the method of installing the protective wall according to the present invention will be described in detail. Since the embodiments described below are preferable specific examples for carrying out the present invention, various technical restrictions are made, but the present invention is particularly limited in the following description. Unless otherwise stated, it is not limited to this form. Further, the vertical direction in the description is the vertical direction in FIG. The expression indicating the numerical range includes the upper limit and the lower limit.

[First Embodiment]
As shown in FIGS. 1 to 4, the protective wall 1 is a member that receives an impact when a vehicle collides, and has a long shape along the extending direction of the road. Then, the protective wall 1 is located inside the protective wall 1 and the recessed portion 11 having a groove shape inward on the inner side surfaces 1a and 1a located at both ends in the longitudinal direction X, and is formed along the longitudinal direction X. It is a member having an insertion hole 12. Then, as shown in FIG. 4, the protective wall 1 is stepwise or continuously viewed from the inner side surface 1a side from the bottom surface 1c side to the upper surface 1d side, which is the side to be placed on the ground or the like. The width is narrowed, the shape is like a combination of a plurality of isosceles trapezoids, and the length from the inner side surface 1a at one end to the inner side surface 1a at the other end is formed in the longitudinal direction X. In the present embodiment, the protective wall 1 has a shape like a combination of a plurality of isosceles trapezoids when viewed from the inner surface 1a, but in other embodiments, the center of gravity of the protective wall 1 is located as close to the bottom surface 1c as possible. Various shapes can be used as long as the shape does not tip over even if an impact is applied from the lateral direction Y.

Further, among the plurality of protective walls 1 to be used, those having a hole portion 13 provided in communication with the insertion hole 12 on the outer surface 1b of the protective wall 1 in the lateral direction Y is also used. That is, a protective wall 1 having no hole 13 and a protective wall 1 having a hole 13 are used. For example, every time 3 to 4 protective walls 1 having no holes 13 are arranged, the protective walls 1 having no holes 13 are arranged so as to be placed.

The recessed portion 11 is provided on the inner side surfaces 1a at both ends of the protective wall 1 by recessing the vicinity of the center of the inner side surface 1a. The recess 11 abuts on the spacer 2 and acts to support the spacer 2. As shown in FIGS. 6 and 7, a spacer 2 having a diameter larger than the sum of the depths of the opposing recesses 11 and 11 of the adjacent protective walls 1 and 1 abuts on the respective recesses 11 and 11. The protective walls 1.1 are connected so as to be interposed, and a gap is provided between the opposing inner side surfaces 1a and 1a of the adjacent protective walls 1.1. By sequentially connecting the plurality of protective walls 1 in this way, the gap between the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1 is substantially fixed in advance, so that the wire rod 3 is inserted in the insertion hole 12. The wiring process for inserting and fixing and the filling process for injecting the fixing agent 4 into the gap between the inner side surfaces 1a and 1a can be performed for several hours without taking a long time such as two weeks, which was required by the conventional method. It can be done within one or two days. In the present embodiment, the recessed portion 11 is provided by being recessed from the upper surface 1d to the middle of the bottom surface 1c side, but in other embodiments, the recessed portion 11 can be provided by being recessed from the upper surface 1d to the bottom surface 1c. Further, in the present embodiment, the recessed portion 11 has a curved substantially semi-cylindrical shape, and the angles of adjacent protective walls 1 can be adjusted within a predetermined range, but other In the embodiment, a recessed shape such as a prism shape can be used as long as it is easy to come into contact with the spacer 2 according to the outer shape of the spacer 2.

The insertion hole 12 is formed in one protective wall 1 in an elongated substantially columnar shape from the inner side surface 1a at one end to the inner side surface 1a at the other end, and the wire rod 3 is inserted along the longitudinal direction X of the protective wall 1. It is a hole for doing. As shown in FIG. 1 and the like, the insertion hole 12 is continuously formed from the inner side surface 1a at one end to the inner side surface 1a at the other end in the protective wall 1 having no hole portion 13, and the hole portion 13 is formed. In the protective wall 1 that does not have the above, the inner side surface 1a at one end to the inner side surface 1a at the other end are intermittently formed at a portion communicating with the hole portion 13. In this embodiment, two insertion holes 12 are bored side by side in the vertical direction of the protective wall 1, but in other embodiments, the number of the holes 12 is a plurality of protective walls 1. As long as they can be connected in series, they can be arranged side by side in the horizontal direction, or can be variously changed such as providing one or three or more.

The holes 13 are provided in at least two or more of the plurality of protective walls 1 to be used as substantially rectangular recesses on the outer surface 1b of the protective wall 1 in the lateral direction Y, and are provided with the insertion holes 12. Communicate. When a plurality of protective walls 1 are connected in series, the wire rod 3 is inserted through the insertion hole 12 from the hole 13 of one protective wall 1 and sent, and the spacer 2 has the spacer insertion hole 21 and the hole 13. The tip of the wire 3 is exposed from the hole 13 of the protective wall 1 having another hole 13 by inserting it into the insertion hole 12 of the protective wall 1 which is not provided, and as shown in FIGS. 3 to 5, the wire is exposed. Tighten and fix with the fixture 5. Further, since the hole portion 13 is provided on the outer surface 1b in the lateral direction Y of the protective wall 1, a special special jack is required as compared with the case where the hole portion 13 is provided on the upper surface 1d of the protective wall 1. Work efficiency is improved, such as being able to work with a normal jack.

The through hole 14 is formed so as to penetrate in the lateral direction Y on the bottom surface 1c side of the protective wall 1. The through hole 14 allows a liquid such as rainwater that flows on the road when installed at the site to flow to the lower side, and the protective wall 1 can prevent the liquid from being blocked. The through hole 14 preferably has an opening that does not clog sand, pebbles, or the like. In the present embodiment, five through holes 14 are provided on the bottom surface 1c side of the protective wall 1, but in other embodiments, one or a plurality of two or more through holes can be provided.

The inner side surface recessed portion 15 is provided in the inner side surface 1a of the protective wall 1 by providing a step from the inner side surface 1a at the corners on the bottom surface 1c side and the outer surface surface 1b side. When a road or the like on which a plurality of protective walls 1 are to be arranged is curved, plate-shaped members having different thicknesses are applied to the inner side surface recesses 15 and 15, and the plurality of protective walls 1 are continuously provided. The bending angle can be adjusted.

Further, at least one fitting hole recessed in a substantially cylindrical shape, a substantially prismatic shape, or the like can be formed in the upper surface 1d of the protective wall 1 from the upper surface 1d. Rather than fitting a hanging member formed in an annular shape or a hook shape at one end into a fitting hole and fixing it, it can be arranged on a road or the like using a heavy machine such as a crane. Further, even if the fitting hole is not provided, a wire or the like can be inserted through the through hole 14 and arranged on a road or the like using a heavy machine such as a crane.

The dimensions of the protective wall 1 are 4000 to 6000 mm in the longitudinal direction X, which is the length between the inner side surfaces 1a at both ends, and 450 in the lateral direction Y of the bottom surface 1c, in consideration of the strength when installed and the ease of transportation. It is preferable that the height is 650 mm, the lateral direction Y of the upper surface 1d is 100 to 200 mm, and the height from the bottom surface 1c to the upper surface 1d is 800 to 1200 mm.

Further, the protective wall 1 is made of a material having a specific gravity heavier than 1 such as concrete, which is kneaded and molded by kneading sand, gravel, cement, water, etc., mortar, which is kneaded and molded by kneading sand, cement, water, etc. Is preferable, and concrete or mortar is more preferable because of its convenience of transportation and long-term stability that it does not easily deteriorate even when exposed to wind and rain.

The spacer 2 is a member that is integrated with or separate from the protective wall 1 and abuts on the recess 11. In the present embodiment, the spacer 2 is provided as a substantially columnar body separate from the protective wall 1, and a gap is provided between the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1. Therefore, the diameter of the spacer 2 is larger than the sum of the depths of the opposing recesses 11 and 11 of the adjacent protective walls 1.1. In the present embodiment, the spacer 2 is substantially cylindrical, but in other embodiments, it may be substantially prismatic or substantially cylindrical depending on the shape of the recess 11.

The spacer 2 is provided with a spacer insertion hole 21 that penetrates perpendicularly to the axial direction. As shown in FIGS. 2 and 3, when the spacer 2 comes into contact with the recess 11 of the protective wall 1, the insertion hole 12 of the protective wall 1 and the spacer insertion hole 21 can be provided so as to communicate with each other. 3 can be inserted straight without bending. In this embodiment, two spacer insertion holes 21 are formed side by side in the vertical direction of the spacer 2, but in another embodiment, the spacer insertion holes 21 are horizontal depending on the position of the insertion holes 12 of the protective wall 1. It is possible to arrange them side by side in the direction, and it is possible to make various changes such as providing one or three or more.

The wire rod 3 is a linear member used for tightening a plurality of protective walls 1. The wire 3 includes a PC steel wire which is a high-strength steel having a diameter of 8 mm or less, a PC steel rod which is a high-strength steel having a diameter of 10 mm or more, a PC steel material such as a PC steel stranded wire obtained by twisting PC steel wires, or carbon fiber. Materials such as can be used.

The fixing agent 4 is a member that is filled in a gap between the opposing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1 to connect the adjacent protective walls 1 and 1, and has fluidity when filled. It is a member that becomes solid or semi-solid over time or when cooled. In the present embodiment, the fixing agent 4 uses a member such as mortar or cement that hardens with the passage of time, and when stress is applied to each of several protective walls 1, it deforms when stress is no longer applied. It can also be an elastomer that returns to its original shape. By using a plastically deformable member such as an elastomer in addition to a plastically deformable member such as mortar and cement, the impact can be absorbed when the vehicle collides with the protective wall 1. When using mortar, it is preferable to use non-shrink mortar.

The wire rod fixing tool 5 is a member that fixes the wire rod 3 to the protective wall 1 in a tightened state. As shown in FIG. 5, the wire rod fixing tool 5 is formed from a fixing body 51 having a tapered hole, a fixing wedge 52 in which a tapered cylinder is half-split so as to grasp the outer circumference of the wire rod 3 inserted in the tapered hole of the fixing body 51, and the like. Become. The wire rod 3 is inserted into the fixing wedge 52, the fixing wedge 52 is pulled into the tapered hole of the fixing body 51 by the force in the return direction when the wire rod 3 is tense, and the gripping force in the radial direction of the fixing wedge 52 at that time causes the fixing wedge 52 to be pulled into the tapered hole. The wire rod 3 is fixed. In the present embodiment, the wire fixing tool 5 is a member composed of a fixing body 51, a fixing wedge 52, and the like, but in another embodiment, the male screw attached to the tip of the wire 3 and the inside of the hole portion 13. It can also be a member composed of a female screw that is arranged and screwed to the male screw.

Next, in the present embodiment, the procedure for attaching the plurality of protective walls 1 will be described. Mainly, a continuous installation process in which a plurality of protective walls 1 are continuously provided, a wiring process in which a wire rod 3 is inserted and fixed inside the protective wall 1, and a filling in which the fixing agent 4 is injected into a gap between adjacent protective walls 1. It consists of processes.

First, regarding the continuous installation process, one protective wall 1 having a recess 11 recessed inward on at least one of the inner side surfaces 1a and 1a located at both ends in the longitudinal direction X is referred to as the protective wall 1. The separate spacer 2 is placed in contact with the recess 11 and the other protective wall 1 is placed on the opposite side of the spacer 2 so as to be in contact with the recess 11 of the other protective wall 1. By interposing a spacer 2 having a diameter larger than the sum of the depths of the opposing recesses 11 and 11 of the adjacent protective walls 1 and 1 in contact with the respective recesses 11 and 11, the adjacent inner walls 11 and 11 are adjacent to each other. It is continuously installed with a gap between the side surfaces 1a and 1a. In this way, three protective walls 1 and four protective walls 1 are connected one after another. Further, when a plurality of protective walls 1 are placed, as shown in FIG. 1, every time three protective walls 1 having no holes 13 are arranged, the protective walls 1 having no holes 13 are arranged. It is preferable to place them in this way.

Then, regarding the wiring process, it is a kind of wire rod 3 from the hole 13 of one protective wall 1 having a hole 13 in the insertion hole 12 located inside the protective wall 1 and formed along the longitudinal direction X. Insert the PC steel stranded wire. Then, since the tip of the PC steel stranded wire is exposed from the hole 13 of the other protective wall 1 having the hole 13, the tip is fixed by the fixing body 51 and the fixing wedge 52 which are a kind of the wire fixture 5. Set up. Further, in order to prevent the hole portion 13 from being exposed, as shown in FIG. 4, a lid portion 6 having a width for covering the hole portion 13 is covered with the hole portion 13 and fixed to the outer surface 1b. .. The hole portion 13 can be filled with mortar or the like without using the lid portion 6.

Then, regarding the filling step, non-shrink mortar, which is a kind of fixing agent 4, is injected into the gaps between the inner side surfaces 1a and 1a which are connected to each other in the plurality of protective walls 1. Then, when the non-shrink mortar is injected three times in succession, an elastomer, which is a kind of the fixing agent 4, is injected in the next gap, and an elastomer is also used as appropriate.

Regarding the wiring step and the filling step, it is preferable to perform the wiring step after the continuous connection step and then the filling step, but it is also possible to perform the wiring step after the filling step is performed after the continuous connection step.

With such a protective wall installation method, it is possible to significantly shorten the construction period until a plurality of protective walls are placed and connected to complete them, and the road can be opened quickly.

[Second Embodiment]
The second embodiment of the protective wall installation method has many parts in common with the first embodiment, but differs in the protective wall 1 and the spacer 2. Specifically, as shown in FIG. 8, on the opposite inner side surfaces 1a and 1a of the adjacent protective walls 1.1, a recess 11 is formed on one side, but is integrated with the protective wall 1 on the other side. The spacer 2 is projected from the inner side surface 1a. The diameter of the spacer 2 or the length in the projecting longitudinal direction X is provided to be larger than the depth of the recessed portion 11, and a gap is provided between the opposing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1. Adjacent protective walls 1.1 can be connected in series.

In FIG. 8, the vicinity of the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1 is enlarged and shown. In one protective wall 1, a recess 11 is provided on one inner side surface 1a. By projecting the spacer 2 integrated with the protective wall 1 on the other inner side surface 1a, a plurality of protective walls 1 can be continuously provided as in the first embodiment.

The wiring step and the filling step after the continuous installation step can be performed in the same manner as in the first embodiment, and the same action and effect can be obtained.

[Third Embodiment]
The third embodiment of the protective wall installation method has many parts in common with the first embodiment, but differs in the protective wall 1 and the spacer 2. Specifically, as shown in FIG. 9, on the opposite inner side surfaces 1a and 1a of the adjacent protective walls 1.1, unlike the first embodiment and the second embodiment, from the inner side surfaces 1a and 1a to the inside. Two recessed portions 11 recessed in a substantially rectangular parallelepiped shape are bored side by side. Then, a rod-shaped spacer 2 is fitted in the recessed portion 11 separately from the protective wall 1. The length of the spacer 2 is larger than the sum of the depths of the recesses 11, and the adjacent protective walls 1 and 1 are adjacent to each other with a gap between the inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1. 1 can be connected in succession.

In FIG. 9, the vicinity of the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1 is enlarged and shown, but in one protective wall 1, recesses 11 are provided on the inner side surfaces 1a and 1a at both ends. By providing the rod-shaped spacer 2 separate from the protective wall 1, a plurality of protective walls 1 can be continuously provided as in the first embodiment and the second embodiment. Further, in the present embodiment, the spacer 2 has a rod-like shape, but is a plate having a thickness equal to or greater than a predetermined value in order to leave a gap between the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1. It is also possible to use a shaped member, a spherical member, a rectangular member, or the like to intervene between the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1. Further, the rod-shaped spacer 2 which is a separate body from the protective wall 1 is integrally formed so as to project from the inner side surface 1a of the protective wall 1 in a similar shape so as to correspond to the recessed portion 11 of the opposite inner side surface 1a. You may.

Regarding the wiring process and the filling process after the continuous installation process, the wiring process can be performed in the same manner as in the first embodiment and the second embodiment except that the wiring process is performed first and the filling process is performed after that. Can be obtained.

[Fourth Embodiment]
The fourth embodiment of the protective wall installation method has many parts in common with the first embodiment, but differs in the inner side surface 1a and the spacer 2 of the protective wall 1. Specifically, as shown in FIG. 10, on the opposite inner side surfaces 1a and 1a of the adjacent protective walls 1.1, unlike the first to third embodiments, the inner side surfaces 1a and 1a are originally. There is no dent corresponding to the dent portion 11, and the rod-shaped spacers 2 and 2 separate from the protective wall 1 abut on the outer surfaces 1b and 1b on the inner side surfaces 1a and 1a. The spacer 2 has a predetermined size, and adjacent protective walls 1 and 1 can be continuously provided with a gap between the opposing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1.

In FIG. 10, the vicinity of the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1 is enlarged and shown, but in one protective wall 1, recesses 11 are provided on the inner side surfaces 1a and 1a at both ends. Instead, by providing the rod-shaped spacer 2 separate from the protective wall 1, a plurality of protective walls 1 can be continuously provided as in the first to third embodiments. Further, in the present embodiment, the spacer 2 has an elongated rod-like shape in the front-rear direction of the paper surface, but is predetermined in order to leave a gap between the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1. It is also possible to use a plate-shaped member, a spherical member, a rectangular member, or the like having the above thickness to intervene between the facing inner side surfaces 1a and 1a of the adjacent protective walls 1 and 1. Further, the rod-shaped spacer 2 which is separate from the protective wall 1 may be integrally formed by projecting from the inner side surface 1a of the protective wall 1 in a similar shape. Further, in addition to abutting the separate rod-shaped spacer 2 on the inner side surface 1a of the protective wall 1, the recessed portion 11 and the recessed portion 11 are hit on the inner surface surfaces 1a and 1a at both ends as in the third embodiment. It is also possible to add different spacers in contact.

Regarding the wiring process and the filling process after the continuous installation process, the wiring process can be performed in the same manner as in the first to third embodiments except that the wiring process is performed first and the filling process is performed after that. Can be obtained.

1 ... Protective wall 11 ... Recessed portion 12 ... Insertion hole 13 ... Hole portion 14 ... Through hole 15 ... Inner side surface recessed portion 1a ... Inner side surface 1b ... Outer surface 1c ... Bottom surface 1d ... Top surface 2 ... Spacer 21 ... Spacer insertion hole 3 ... Wire rod 4 ... Fixture 5 ... Wire rod fixture 51 ... Fixture 52 ...・ Fixture wedge 6 ・ ・ ・ Cover

Claims (7)

A substantially semi-cylindrical recess that is recessed inward on the inner surface located at both ends in the longitudinal direction of a plurality of protective walls or at least one of the inner surfaces thereof, and an integral or separate body of the protective wall. A continuous installation process in which a substantially columnar spacer is abutted and a plurality of protective walls are continuously installed with a gap between the adjacent inner side surfaces.
A wiring process in which a wire rod is inserted and fixed through an insertion hole located inside the protective wall and formed along the longitudinal direction.
A method for installing a protective wall, which comprises a filling step of injecting a fixing agent into a gap between the inner side surfaces of the plurality of protective walls. In the communication step, at least two or more of the protective walls are provided with holes communicating with the insertion holes on the outer surface of the protective walls in the lateral direction, and the wire rod is provided from the holes. The protective wall installation method according to claim 1, wherein the protective wall is inserted and fixed. The protective wall installation method according to claim 1 or 2, wherein the fixing agent is at least one from mortar and elastomer. Multiple protective walls connected in the longitudinal direction,
It is integrated with or separate from the protective wall and is located at both ends in the longitudinal direction of the protective wall. A substantially semi-cylinder recessed inward on the inner surface or at least one of the inner surfaces. A substantially columnar space that is in contact with the shaped recess and has a gap between the adjacent inner side surfaces. -Sir and
It was inserted into an insertion hole located inside the protective wall and drilled along the longitudinal direction and fixed. With wire
A continuous protective wall with a fixing agent injected into a gap created between adjacent inner surfaces. The continuous protection according to claim 4, wherein at least two or more of the protective walls are provided with holes communicating with the insertion holes on the outer surface of the protective walls in the lateral direction. Wall. The continuous protective wall according to claim 4 or 5, wherein the protective wall has a through hole formed in the lateral direction on the bottom surface side of the protective wall. The inner side surface of the protective wall is characterized by having an inner side surface recessed portion provided with a step from the inner side surface at a corner on the bottom surface side and the outer surface side in the lateral direction of the protective wall. The continuous protective wall according to any one of claims 4 to 6.

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