JP5446224B2 - Reinforcing and reinforcing structure of existing structure wall and repair and reinforcing method - Google Patents

Description

  The present invention relates to a repair reinforcement structure and a repair reinforcement construction technique for improving the strength and function of wall bodies such as railings installed on viaducts such as railways and roads.

  Walls such as railings installed on viaducts such as railways and roads will be weakened due to deterioration over time, such as the neutralization of concrete, and will be strengthened with a review of horizontal forces acting due to wind, earthquakes, etc. When there is a demand for raising the height dimension due to noise reduction and soundproofing measures associated with speeding up of the vehicle, reinforcement is required.

For example, in Patent Document 1, a pair of reinforcing plates attached with adhesives to both sides of a handrail of a viaduct, a fixing member that penetrates the reinforcing plate and the handrail, and connects the two reinforcing plates, and both reinforcing plates There is disclosed a reinforcing structure including a cap plate provided so as to integrally connect upper end portions of each other and covering an upper portion of the rail, and an anchor for fixing the lower ends of both reinforcing plates to the floor slab.
JP2007-154600

However, the above-described reinforcing structure has the following problems.
(1) Since the adhesive has a short curing time, the workability is poor because the reinforcing plate must be attached to the railing immediately after the adhesive is applied to the reinforcing plate. (2) If moisture is present on the surface of the railing, the adhesive strength of the adhesive may not be expressed. Therefore, since the adhesive cannot be used in rainy or high humidity, workability is poor. (3) Since the covering thickness cannot be secured with the adhesive, it does not function as a reinforcing material. (4) When a reinforcing material is attached to the handrail, a layer made of the adhesive material is formed using a large amount of an adhesive material in order to eliminate unevenness in the adhesive strength due to the unevenness of the surface of the handrail and the reinforcing plate. At this time, since a large amount of expensive adhesive is used, the cost is increased.

  Therefore, the present invention has been made in view of the above points, and an object of the present invention is to provide a wall-repair-reinforcing structure and a repair-reinforcing method that are excellent in workability and that can reinforce and reinforce a wall body at low cost. It is to provide.

In order to achieve the above-mentioned object, the wall reinforcing / reinforcing structure for an existing structure according to the present invention is a wall reinforcing / reinforcing structure for an existing structure, and is arranged at a predetermined interval from a side surface of the wall body. A reinforcing plate, a mortar portion formed by filling a mortar between the wall body and the reinforcing plate, a through hole provided in the reinforcing plate and the mortar portion between the reinforcing plate. A fixing member that penetrates so as to form a gap and fixes the reinforcing plate to the wall body, and a side opposite to the mortar portion of the reinforcing plate so as to cover the through hole provided in the reinforcing plate. An outflow prevention material that is attached to the surface and prevents the mortar from flowing out of the through hole is provided.

  According to the repair and reinforcement structure for a wall body of an existing structure of the present invention, a reinforcing plate disposed at a predetermined interval from the side surface of the wall body, and a mortar portion formed between the wall body and the reinforcing plate, Since the fixing member for fixing the reinforcing plate to the wall body is provided, the wall body is reinforced by both the reinforcing plate and the mortar portion, and the resistance to horizontal forces such as wind load and seismic load increases.

  In addition, since there are irregularities on the surfaces of the wall and the reinforcing plate, the conventional method of attaching the reinforcing plate to the wall with an adhesive may cause uneven adhesion strength. By providing the mortar portion between the two, the reinforcing plate can be firmly attached to the wall body through the mortar portion even if the surface of the wall body and the reinforcing plate is uneven. Therefore, the reinforcing plate can be attached more firmly and at a lower cost than the case of bonding with an adhesive.

  In addition, since it is attached so as to cover the through hole of the reinforcing plate and includes an outflow prevention material that prevents the mortar from flowing out, the gap formed between the reinforcing plate and the fixing member is also filled in a compacted state. Yes. Therefore, a support joint structure is formed by the reinforcing plate and the fixing member, and a tensile force or a compressing force acting on the reinforcing plate can be transmitted to the fixing member via the mortar portion.

  Furthermore, since the mortar filling operation can be performed anytime after the reinforcing plate is installed, the workability is excellent.

Further, in the present invention, a spacer is further provided between each connection portion connecting the reinforcing plates along the side surface of the wall body and the wall body so as to be in contact with the reinforcing plates. the fixing member, if Rukoto provided on both sides of the spacer across the connecting portion, to secure a space for filling the mortar between the wall and the reinforcing plate, ensures mortar Can be filled. Furthermore, by functioning as a connecting material between the reinforcing plates, by installing a spacer at each connecting portion where the reinforcing plates are connected along the side surfaces of the wall body so as to be in contact with both adjacent reinforcing plates, The reinforcing plates can be connected more firmly.

  In the present invention, if the spacer is made of the same material as that of the reinforcing plate, it is possible to save time and labor for arranging a new spacer or managing inventory.

  In the present invention, if the anchor means for fixing the lower end of the reinforcing plate to the existing structure is further provided, the reinforcing plate can be firmly fixed to the existing structure.

  Further, in the present invention, the anchor means includes a connecting member disposed so as to be in contact with the reinforcing plate and the existing structure, and the connecting member passing through a through hole provided in the connecting member. A second fixing member for fixing to the object, a second mortar portion formed by filling the through hole provided in the connecting material with mortar, and the through hole provided in the connecting material. As described above, a second outflow prevention material that is attached to the surface of the reinforcing plate and prevents the mortar filled in the through hole from flowing out may be provided. In this way, the reinforcing plate can be reliably fixed to the existing structure. Further, a second mortar portion formed by filling a mortar into a through hole provided in the connecting material to penetrate the second fixing member, and the connecting material so as to cover the through hole. If it is provided with the second outflow prevention material attached to the surface and prevents the mortar filled in the through hole from flowing out, it is formed between the connecting material and the second fixing member. Since the mortar is filled in the gap in a compacted state, it becomes a support joint structure, and the tensile force or the compressive force acting in the side surface direction of the connecting material can be transmitted to the second fixing member via the mortar portion. .

  Further, in the present invention, the reinforcing plate extends a predetermined length above the upper end of the wall body, and a raised portion formed above the wall body, and above the wall body, It is good also as providing further the pillar member which is installed so that it may protrude and supports the said raising part. In this way, the soundproofing effect is improved.

Further, in the repair and reinforcement method for a wall body of an existing structure according to the present invention, a reinforcing plate arranging step of arranging a reinforcing plate at a predetermined interval from a side surface of the wall body, and the reinforcing plate are provided on the reinforcing plate. the resulting through-hole so as to cover the fixing step of fixing to said wall member by a fixing member that penetrates so that a gap is formed between the said reinforcing plate, the front Kinuki hole, the wall of the reinforcing plate An outflow prevention material attaching step of attaching an outflow prevention material to the surface opposite to the body, and a mortar filling step of filling mortar between the wall body and the reinforcing plate.

  According to the method for reinforcing and reinforcing a wall body of an existing structure according to the present invention, a reinforcing plate arranging step of arranging a reinforcing plate at a predetermined interval from a side surface of the wall body, and the reinforcing plate is fixed by a fixing member. A fixing step for fixing to the wall, and an outflow prevention material for attaching an outflow prevention material to the surface of the reinforcing plate opposite to the wall body so as to cover a through hole provided in the reinforcing plate for allowing the fixing member to penetrate Since it includes a mounting step and a mortar filling step of filling mortar between the wall body and the reinforcing plate, the wall body will be reinforced with both the reinforcing plate and the mortar part, such as wind load and earthquake load. Increases resistance to horizontal forces.

  In addition, since there are irregularities on the surfaces of the wall and the reinforcing plate, the conventional method of attaching the reinforcing plate to the wall with an adhesive may cause uneven adhesion strength. By providing the mortar portion between the two, the reinforcing plate can be firmly attached to the wall body through the mortar portion even if the surface of the wall body and the reinforcing plate is uneven. Therefore, the reinforcing plate can be attached more firmly and at a lower cost than the case of bonding with an adhesive.

  In addition, since it is attached so as to cover the through hole of the reinforcing plate and includes an outflow prevention material that prevents the mortar from flowing out, the gap formed between the reinforcing plate and the fixing member is also filled in a compacted state. Yes. Therefore, a support joint structure is formed by the reinforcing plate and the fixing member, and a tensile force or a compressing force acting on the reinforcing plate can be transmitted to the fixing member via the mortar portion.

  Furthermore, since the mortar filling operation can be performed anytime after the reinforcing plate is installed, the workability is excellent.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to reinforce and reinforce the wall body of an existing structure efficiently, firmly and cheaply.

  Hereinafter, preferred embodiments of the repair and reinforcement structure of the present invention will be described in detail with reference to the drawings. In addition, although the following embodiment demonstrates the case where the railing of a railroad overpass is reinforced, this invention is applicable also to the general wall body of a viaduct.

  FIG.1 and FIG.2 is sectional drawing and perspective view which show the repair reinforcement structure 4 of the handrail 2 of the railroad overpass 1 which concerns on 1st embodiment of this invention.

  As shown in FIG.1 and FIG.2, the repair reinforcement structure 4 of the rail 2 of the rail overhead 1 is the reinforcement board 5a, 5b arrange | positioned on the both sides of the rail 2, and between the rail 2 and the reinforcement boards 5a, 5b. A spacer 9 installed, a mortar portion 6 filled between the rail 2 and the reinforcing plates 5a and 5b, and a first fixing member 7 for fixing the reinforcing plates 5a and 5b to the rail 2; A first spill prevention material 8 for preventing the mortar filled in the mortar portion 6 from flowing out.

  The handrail 2 includes a ground cover portion 2a formed on the floor slab 3 at a predetermined height integrally with the floor slab 3, and a concrete block portion 2b formed at a desired height on the ground cover portion 2a. . The ground cover portion 2a is integrally formed with RC with the floor slab 3 with reinforcing bars 10 arranged. Moreover, the concrete block part 2b is previously formed in a factory etc., and is integrally mounted on the ground cover part 2a.

  The reinforcing plates 5a and 5b are disposed on both sides of the rail 2 with a predetermined interval. Further, a cap 11 is provided so as to integrally connect the upper ends of the reinforcing plates 5 a and 5 b to each other and cover the upper end of the rail 2. In the present embodiment, a plurality of high toughness cement plates are connected in the direction of the bridge axis of the railway overhead 1 by the adhesive 12 as the reinforcing plates 5a and 5b.

  A high toughness cement board is formed by kneading reinforcing fibers such as high-strength vinylon fibers into cement by a papermaking method, and is formed into a thin sheet of about 6 to 9 mm while giving high toughness and high bending strength characteristics. It can be mass-produced at low cost for quality, and can be easily drilled and cut on site, and has excellent transportation and workability.

In addition, Table 1 shown below shows the performance of an example of the high toughness cement board produced using the high intensity | strength vinylon fiber.

  In this embodiment, high toughness cement plates are used as the reinforcing plates 5a and 5b. However, the present invention is not limited to this, and fiber reinforced resin plates, stainless steel plates, aluminum alloy plates, high corrosion resistant hot dip plated steel plates, etc. A highly corrosion-resistant metal plate may be used.

  FIG. 3 is an enlarged view of a connection portion between the reinforcing plate 5a and the first fixing member 7 of the repair reinforcing structure 4 according to the present embodiment.

  As shown in FIG. 3, the mortar portion 6 is formed by filling a high fluid mortar between the reinforcing plate 5 a and the rail 2. Since the highly fluid mortar is in close contact with the side of the rail 2 and the reinforcing plate 5 a and hardens, the reinforcing plate 5 a is attached so as to be integrated with the rail 2 via the mortar portion 6.

  The spacers 9 are all arranged in a predetermined thickness so that the thickness of the mortar portion 6 is constant in the direction of the wall surface of the rail 2 and is installed between the rail 2 and the reinforcing plate 5a. It is bonded to 5 a with an adhesive 12. The spacer 9 is installed so as to be in contact with the connecting portion 13 connecting the reinforcing plates 5a and 5a adjacent to each other in the wall surface direction across the adjacent reinforcing plates 5a and 5a. Thereby, adjacent reinforcement board 5a, 5a can be connected more firmly. In the present embodiment, the same high-toughness cement plate as that of the reinforcing plate 5a is used as the spacer 9, but the present invention is not limited to this, and a spacer made of another material may be used.

  Moreover, as shown in FIGS. 1-3, the 1st fixing member 7 consists of the reinforced plates 5a and 5b and the volt | bolt 7a which penetrates the hand rail 2, and the nuts 7b and 7b screwed together at the both ends, respectively. . By tightening both nuts 7 b, the reinforcing plates 5 a and 5 b and the balustrade 2 are integrally fastened and fixed via the mortar portion 6. The bolts 7a and nuts 7b are preferably made of stainless steel having excellent corrosion resistance. This is because the reinforcing bar 10 is arranged inside the ground cover part 2a of the balustrade 2, and the bolt 7a that penetrates the ground cover part 2a is made of stainless steel, and between different metals with the reinforcing bar 10 This is to prevent the corrosion from proceeding. The cap 11 is also made of stainless steel.

  FIG. 4 is an enlarged view showing the vicinity of the through hole 14 provided in the reinforcing plate 5a of the repair reinforcing structure 4 according to the present embodiment.

  As shown in FIG. 4, the bolt 7a passes through the reinforcing plate 5a and is inserted into the through hole 14, and the gap 15 formed between the bolt 7a and the reinforcing plate 5a is also filled with high-fluid mortar. Has been. The mortar portion 6 of the reinforcing plate 5a is covered with the first outflow prevention material 8 for preventing the high flow mortar from flowing out from the gap 15 during the filling operation of the high flow mortar so as to cover the through hole 14. Is provided on the opposite surface (hereinafter referred to as the outside of the reinforcing plate 5a).

  FIG. 5 is an enlarged view showing the vicinity of the connecting portion between the reinforcing plates 5a and 5b and the floor slab 3 of the repair reinforcing structure 4 according to the present embodiment.

  As shown in FIG. 5, the lower ends of the reinforcing plates 5a and 5b are fixed to the floor slab 3 by first and second anchor means 16 and 17, respectively.

  The reinforcing plate 5a provided on the outer side of the rail 2 (on the right side with respect to the rail 2 in the figure) has a lower end portion extending to the lower edge of the side surface of the floor slab 3, and the first anchor means 16 It is fixed to the floor slab 3. The first anchor means 16 includes a bolt 16a that reaches the floor slab 3 through a lower end portion that extends to the side surface of the floor slab 3 of the reinforcing plate 5a, and is screwed into the end of the bolt 16a to be reinforced. The nut 16b which fastens and fixes the lower end part of this to the floor slab 3 via the mortar part 6 is provided. The lower end portion of the reinforcing plate 5a is integrally attached to the floor slab 3 by the first anchor means 16.

  Further, the reinforcing plate 5 b provided on the inner side of the rail 2 (left side with respect to the rail 2 in the figure) is fixed to the floor slab 3 by the second anchor means 17. The second anchor means 17 includes an L-shaped connecting member 17a arranged so as to be in contact with the surface of the reinforcing plate 5b and the upper surface of the floor slab 3, and both ends of the connecting member 17a at the balustrade 2 and the floor slab 3 Are provided with a first fixing member 7 and a second fixing member 17b.

  The first fixing member 7 includes a bolt 7a that penetrates the connecting member 17a and the reinforcing plate 5b, and a nut 7b that is screwed into an end portion of the bolt 7a to fasten and fix the connecting member 17a and the reinforcing plate 5b to the rail 2. Consists of.

  The second fixing member 17b includes a bolt 17c that passes through the connecting member 17a and reaches the floor slab 3, and a nut 17d that is screwed into an end of the bolt 17c to fasten and fix the connecting member 17a to the floor slab 3. Consists of.

  Each bolt 7a, 17c passes through the connecting member 17a and is inserted into the through hole 18, and a gap 19 formed between each bolt 7a, 17c and the connecting member 17a is filled with high-flowing mortar. Has been. The first outflow prevention material 8 or the second outflow prevention material 20 for preventing the high flow mortar from flowing out from the gap 19 during the filling operation of the high flow mortar so as to cover the through hole 18. And attached to the connecting member 17a.

  Further, the bolts 16 a and 17 c, the nuts 16 b and 17 d, and the connecting member 17 a were made of stainless steel like the first fixing member 7.

  According to the repair reinforcement structure 4 of the handrail 2 according to the present embodiment configured as described above, the following effects can be obtained.

  (1) Since the reinforcing plates 5a and 5b, the mortar portion 6 and the first fixing member 7 are provided, the rail 2 is reinforced by the reinforcing plates 5a and 5b and the mortar portion 6, and wind load, earthquake load, etc. Strength against horizontal force increases.

  (2) Since there are irregularities on the surface of the rail 2 and the reinforcing plates 5a, 5b, the conventional method of bonding the reinforcing plates 5a, 5b to the rail 2 with the adhesive 12 may cause uneven bonding strength. However, by providing the mortar portion 6, the reinforcing plates 5 a and 5 b can be firmly attached to the rail 2 via the mortar portion 6 even if there are irregularities on the surfaces of the rail 2 and the reinforcing plates 5 a and 5 b. Therefore, the reinforcing plates 5a and 5b can be attached more firmly and at a lower cost than the case of bonding with the adhesive material 12.

  (3) Since the first outflow prevention member 8 attached so as to cover the through holes 14 of the reinforcing plates 5a and 5b is provided, a gap formed between the reinforcing plates 5a and 5b and the first fixing member 7 15 is also filled with mortar in a compacted state. Accordingly, a bearing connection structure is formed by the reinforcing plates 5a and 5b and the first fixing member 7, and the tensile force or the compressive force acting on the reinforcing plates 5a and 5b is transmitted to the bolt 7a via the mortar portion 6. Can do.

  (4) Since the spacers 9 are installed between the reinforcing plates 5a and 5b and the balustrade 2, a space for filling the mortar between the reinforcing plates 5a and 5b and the balustrade 2 is secured, and the mortar It can be filled reliably. Moreover, since the spacer 9 is installed so as to straddle the adjacent reinforcing plates 5a and 5a and the reinforcing plates 5b and 5b, the spacer 9 functions as a connecting material between the reinforcing plates 5a and the reinforcing plates 5b. The reinforcing plates 5b can be more firmly connected to each other. Furthermore, since the spacer 9 uses the same high toughness cement plate as the reinforcing plates 5a and 5b, it is possible to save the trouble of newly arranging the spacer 9 and managing the inventory, so that the work efficiency is improved.

  (5) Since the first and second anchor means 16 and 17 for fixing the lower ends of the reinforcing plates 5a and 5b to the floor slab 3 are provided, the reinforcing plates 5a and 5b can be firmly fixed to the floor slab 3. it can.

  (6) Since the high-flowing mortar is filled in the through hole 18 of the connecting material 17a, the gap 19 formed between the connecting material 17a and the bolts 7a and 17c is also filled in a compacted state. It has a junction structure. That is, a tensile force or a compressive force acting in the side surface direction of the connecting member 17a can be transmitted to the bolts 7a and 17c through the mortar.

  (7) As a horizontal load acting on the rail 2, for example, when a wind load acts on the outside of the outer reinforcing plate 5 a, the shearing force is applied to the first fixing member 7 and the rail 2 as shown in FIG. 6. Are transmitted to the inner reinforcing plate 5b by the ground cover portion 2a and the concrete block portion 2b and the cap 11. In addition, the bending moment is applied to the outer reinforcing plate 5a that is directly subjected to the wind load, and the compressive force is applied to the inner reinforcing plate 5b so that most of the bending moment is borne by these reinforcing plates 5a and 5b. Will be. Therefore, almost no bending moment acts on the portion of the balustrade 2 and the shearing force is dominant. For this reason, even if the bending moment force of the balustrade 2 is insufficient, there will be no trouble, and it can function sufficiently as a shearing force transmission member. Can be improved. Therefore, the cost can be reduced by shortening the construction period and reducing the environmental load.

  (8) The balustrade 2 is covered with the reinforcing plates 5a and 5b on both sides and the upper surface is covered with the cap 11 so that the entire surface is shielded from the outside air and the penetration of rainwater is prevented as much as possible. Therefore, deterioration over time due to neutralization or the like of the rail 2 can be suppressed after the repair and reinforcement, and durability is improved.

  Next, another embodiment of the present invention will be described. In the following description, portions corresponding to the above-described embodiment are denoted by the same reference numerals, description thereof is omitted, and differences are mainly described.

  7 and 8 are a cross-sectional view and a perspective view showing the raised portion 22 according to the second embodiment of the present invention.

  As shown in FIGS. 7 and 8, both the reinforcing plates 5 a, 5 b extend a predetermined length further upward from the upper end of the rail 2, and a raised portion 22 is formed at the top of the rail 2.

  Inside the raised portion 22 are provided a pillar member 23 for supporting the reinforcing plates 5a and 5b, and a rooting mortar portion 24 for supporting the pillar member 23, and a foamed resin 25 such as polystyrene foam is provided. Filled.

  The column member 23 is disposed on the upper surface of the rail 2 so as to protrude upward and to be in contact with both the reinforcing plates 5a and 5b. In the present embodiment, a channel steel material is used as the column member 23, and the flanges are arranged so as to be in contact with the reinforcing plates 5a and 5b, respectively. The reinforcing plates 5 a and 5 b are fixed to the flange of the column member 23 with screws 21. In this embodiment, the channel steel material is used as the column member 23, but the present invention is not limited to this, and for example, an H-shaped steel, an I-shaped steel, a square steel pipe, or the like may be used.

  Further, the root hardening mortar portion 24 is formed of a high flow mortar so as to have a predetermined thickness on the rail 2. The predetermined thickness of the root hardening mortar portion 24 is a thickness necessary for supporting the column member 23 and is appropriately determined depending on the design or the like.

  The foamed resin 25 is filled in the hollow portion between the reinforcing plate 5 a and the reinforcing plate 5 b and above the root hardening mortar portion 24. As in the first embodiment, the cap 11 is provided at the upper end of the raised portion 22 so that the foamed resin 25 does not flow out.

  According to the repair reinforcement structure 26 of the handrail 2 according to the present embodiment configured as described above, as in the first embodiment, for example, a wind load acts on the outer reinforcement plate 5b as a load from the horizontal direction. Then, as shown in FIG. 9, the shearing force is transmitted to the inner reinforcing plate 5 b by the first fixing member 7, the ground covering portion 2 a and the concrete block portion 2 b of the rail 2, and the cap plate 11. The bending moment is such that a tensile force acts on the outer reinforcing plate 5a that is directly subjected to the wind load, and a compressive force acts on the inner reinforcing plate 5b, so that most of the bending moment is exerted by both the reinforcing plates 5a and 5b. It will be borne.

  Moreover, since the columnar material 23 is installed in the raised portion 22 and the foamed resin 25 is filled, the shearing force is transmitted to the inner reinforcing plate 5b via the columnar material 23 and the foamed resin 25. Can do. Here, since the column member 23 and the foamed resin 25 are lightweight, an increase in load on the floor slab 3 is also small.

  Furthermore, the raised portion 22 can enhance the function as a soundproof wall, and as much as possible to prevent the traveling noise of the vehicle from diffusing into the area along the line, and to increase the noise when the traveling speed is improved. It will be extremely useful to you.

  In each of the above-described embodiments, as a method of fixing the reinforcing plates 5a and 5b to the rail 2, the nuts 7b and 7b that are screwed to both ends of the bolts 7a that penetrate the reinforcing plates 5a and 5b and the rail 2 are tightened. Although the method has been described, the present invention is not limited to this, and a bolt that passes through the outer reinforcing plate 5a and reaches the handrail 2 and a bolt that passes through the inner reinforcing plate 5b and reaches the handrail 2 are respectively provided. The reinforcing plates 5a and 5b may be fixed to the rail 2 respectively.

  Moreover, in each embodiment mentioned above, although the cap 11 was demonstrated in the substantially U-shaped shape and using the thing made from stainless steel, it is not limited to this, The upper surface of the handrail 2 is used. Any material that covers and prevents the intrusion of rainwater or the like may be used.

  Furthermore, in each embodiment mentioned above, although the case where the spacer 9 and the reinforcement boards 5a and 5b were used one each was demonstrated, it is not limited to this, You may use a plurality of sheets in piles.

It is sectional drawing which shows the repair reinforcement structure of the rail of the railroad overpass which concerns on 1st embodiment of this invention. It is a perspective view which shows the repair reinforcement structure of the rail of the railroad overpass which concerns on 1st embodiment of this invention. It is an enlarged view of the connection part of the reinforcement board of the repair reinforcement structure which concerns on this embodiment, and a 1st fixing member. It is an enlarged view which shows the through-hole vicinity provided in the reinforcement board of the repair reinforcement structure which concerns on this embodiment. It is an enlarged view which shows the connection part vicinity of the reinforcement board and floor slab of the repair reinforcement structure which concerns on this embodiment. It is a figure which shows the relationship between the shear force and bending moment when the wind load is acting on the handrail which concerns on this embodiment, and its action state. It is sectional drawing which shows the raising part which concerns on 2nd embodiment of this invention. It is a perspective view which shows the raising part which concerns on 2nd embodiment of this invention. It is a figure which shows the relationship between the shear force and bending moment when the wind load is acting on the handrail which concerns on this embodiment, and its action state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Railroad elevated 2 Rail 2a Ground cover part 2b Concrete block part 3 Floor slab 4 Repair reinforcement structure 5a, 5b Reinforcement board 6 Mortar part 7 First fixing member 7a Bolt 7b Nut 8 First outflow prevention material 9 Spacer 10 Reinforcing bar 11 Head plate 12 Adhesive 13 Connection 14 Through hole 15 Clearance 16 First anchor means 16a Bolt 16b Nut 17 Second anchor means 17a Connecting material 17b Second fixing member 17c Bolt 17d Nut 18 Through hole 19 Clearance 20 Second Outflow prevention material 21 Screw 22 Raised part 23 Column material 24 Rooted mortar part 25 Foamed resin 26 Reinforcement and reinforcement structure

Claims (7)

It is a repair and reinforcement structure for a wall of an existing structure,
A reinforcing plate disposed at a predetermined interval from a side surface of the wall,
A mortar portion formed by filling mortar between the wall and the reinforcing plate;
A fixing member that penetrates the through hole and the mortar portion provided in the reinforcing plate so as to form a gap between the reinforcing plate and fix the reinforcing plate to the wall body;
An outflow prevention material that is attached to the surface of the reinforcing plate opposite to the mortar portion so as to cover the through hole provided in the reinforcing plate and prevents the mortar from flowing out of the through hole. Renovation and reinforcement structure for wall of existing structure. The fixing member further includes a spacer provided so as to be in contact with each other between the reinforcing plates, between each connection portion connecting the reinforcing plates along the side surface of the wall body and the wall body , renovation reinforcing structure of the wall of the existing structure as claimed in claim 1, characterized that you have provided on both sides of the spacer across the connection.   The repair reinforcement structure for a wall of an existing structure according to claim 2, wherein the spacer is made of the same material as the reinforcement plate.   The repair reinforcement structure of the wall body of the existing structure of Claim 1 or 2 further equipped with the anchor means for fixing the lower end of the said reinforcement board to the said existing structure. The anchor means is
A connecting member arranged to contact the reinforcing plate and the existing structure;
A second fixing member that passes through a through-hole provided in the connecting material and fixes the connecting material to the existing structure;
A second mortar portion formed by filling mortar into the through hole provided in the connecting material;
A second outflow prevention material which is attached to the surface of the reinforcing plate so as to cover the through hole provided in the connecting material and prevents the mortar filled in the through hole from flowing out. The repair and reinforcement structure for a wall of an existing structure according to claim 4, wherein The reinforcing plate extends a predetermined length above the upper end of the wall body, and a raised portion formed above the wall body,
The wall structure retrofit structure for an existing structure according to claim 1, further comprising a column member which is installed on the wall body so as to protrude upward and supports the raised portion. In the repair and reinforcement method for walls of existing structures,
A reinforcing plate arranging step of arranging a reinforcing plate at a predetermined interval from the side surface of the wall body;
A fixing step of fixing the reinforcing plate to the wall body with a fixing member that penetrates a through hole provided in the reinforcing plate so that a gap is formed between the reinforcing plate and the reinforcing plate ;
Before covering the Kinuki hole, and outflow preventing member attaching step of attaching the outflow prevention member to the wall member and the opposite surface of said reinforcing plate,
A repair and reinforcement method for a wall of an existing structure, comprising a mortar filling step of filling a mortar between the wall and the reinforcing plate.

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