JP2009243237A - Wall balustrade for bridge, remaining form and method for constructing wall balustrade for bridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the durability of a remaining form 11 and the efficiency of the mounting work of the remaining form 11. <P>SOLUTION: A wall balustrade for a bridge has the remaining form 11 disposed in upright at the outer end section of a floor slab 3 and a concrete wall 43 integrally joined with the internal side face of the remaining form 11. The remaining form 11 has a form body 13 disposed in upright at the outer end section of the floor slab 3 and composed of concrete, an expansion metal 15 being embedded to the form body 13 and carrying out an anticorrosion coating on a surface and a steel material 17 being joined with the expansion metal 15 and carrying out the anticorrosion coating on the surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is, for example, a wall rail constructed on a bridge slab, a residual formwork used on a wall rail constructed on a high floor slab such as a bridge floor slab, and a wall rail on a bridge floor slab. It is related with the construction method of the wall rail which does.

  As a prior art of a wall rail constructed on a floor slab at a high place, there is one shown in Patent Document 1, and the configuration of the wall rail according to the prior art will be briefly described as follows.

That is, a remaining mold is erected on the outer end portion of the floor slab, and the remaining mold has a mold body made of concrete. In addition, a concrete wall is integrally joined to the inner side surface of the remaining formwork, and this concrete wall places concrete between the remaining formwork and the inner formwork placed inside the remaining formwork. It is formed by doing. Here, in order to increase the tensile strength and bending strength of the formwork body, rebars are usually embedded in the formwork body (concrete of the formwork body) or synthetic fibers such as aramid fibers are mixed into the concrete of the formwork body I do.
Japanese Patent No. 3636960

  By the way, when reinforcing bars are embedded in the concrete of the formwork body, the tensile strength and bending strength of the formwork body can be sufficiently increased, but the thickness of the concrete of the formwork body is increased to prevent corrosion of the reinforcing bars. It is necessary to ensure the effect, in other words, the rust prevention effect in the concrete of the mold body. For this reason, the weight of the remaining mold is increased, and the work of attaching the remaining mold to the floor slab (the work of attaching the remaining mold) becomes troublesome and complicated.

  On the other hand, when the synthetic fiber is mixed into the concrete of the mold body, the thickness and thickness of the mold body can be reduced without considering the rust prevention effect in the concrete of the mold body, but the rigidity and strength ( (Tensile strength, bending strength) cannot be sufficiently increased. Therefore, it becomes difficult to improve the durability of the remaining formwork, in other words, the durability of the wall rail.

  Accordingly, an object of the present invention is to provide a bridge wall height column, a residual formwork, and a method for constructing a bridge wall height column having a novel configuration that can solve the above-described problems.

  A first feature of the present invention is that, in a wall rail constructed on a floor slab at a high place, a residual mold frame erected on an outer end portion of the floor slab, and an inner surface of the residual mold frame are integrated. A concrete wall formed by placing concrete between the remaining formwork and the inner formwork placed inside the remaining formwork, wherein the remaining formwork is the floor Standing at the outer edge of the plate, a formwork body made of concrete, embedded in the formwork body, coated with anticorrosive coating on the surface, and reinforcing the formwork body, and the meshwork And a steel material partly exposed from the inner side surface of the mold body and having a corrosion-proof coating on the surface.

  According to the first feature, the mesh body is embedded in the concrete of the mold body, and a part of the steel material joined to the mesh body is exposed from the inner surface of the mold body. Then, since the steel material is embedded in both the concrete of the formwork body and the concrete of the concrete wall, the bondability between the concrete of the formwork body and the mesh body, the concrete of the formwork body and the steel material And the connectivity between the concrete of the concrete wall and the steel material can be sufficiently ensured.

  In addition, since the mesh body and the steel material are each provided with anticorrosion coating, the rust preventive effect of the mesh body and the steel material, in other words, without increasing the thickness of the concrete of the mold body. Then, the rust prevention effect in the concrete of the said mold body can be ensured.

  The second feature of the present invention is that, in a remaining formwork used for a wall rail constructed on a floor slab at a high place, a formwork body made of concrete, embedded in the formwork body, and subjected to anticorrosion coating on the surface. A reticulated body that reinforces the formwork body, a steel member joined to the reticulate body, a part of which is exposed from the inner surface of the formwork body, and a surface is subjected to anticorrosion coating, and the formwork The gist of the invention is that it includes a lower seal holding plate that is provided at the lower end side of the inner side surface of the main body so as to cross the width direction of the mold main body and holds a sealing material for preventing concrete leakage.

  According to the second feature, the mesh body is embedded in the concrete of the mold body, and a part of the steel material joined to the mesh body is exposed from the inner surface of the mold body. In this case, the steel material is embedded in both the concrete of the mold body and the concrete of the concrete wall. Therefore, the bondability between the concrete of the mold body and the mesh body, and the concrete of the mold body And the steel material, and the concrete wall and the steel material can be sufficiently secured.

  Further, since the lower seal holding plate for holding the concrete leakage prevention sealing material on the lower end side of the inner surface of the remaining mold is provided so as to cross along the width direction of the mold body, During the construction of the wall rail, the concrete placed inside the residual formwork (specifically, the concrete placed in the floor slab or the concrete placed when forming the concrete wall) remains. It can prevent leaking from the gap between the formwork and the floor slab.

  Further, since the mesh body and the steel material are respectively provided with anticorrosion coating, the rust preventive effect of the mesh body and the steel material, in other words, without increasing the thickness of the concrete of the mold body. Then, the rust prevention effect in the concrete of the said mold body can be ensured.

  A third feature of the present invention is that, in a remaining formwork used for a wall rail constructed on a floor slab at a high place, a formwork body made of concrete, embedded in the formwork body, and subjected to anticorrosion coating on the surface. A reticulated body that reinforces the formwork body, a steel member joined to the reticulate body, a part of which is exposed from the inner surface of the formwork body, and a surface is subjected to anticorrosion coating, and the formwork An upper seal holding plate provided at the upper end side of the inner side surface of the main body so as to traverse along the width direction of the formwork main body and holding the sealing material for preventing rainwater intrusion. And

  According to a third feature, the mesh body is embedded in the concrete of the mold body, and a part of the steel material joined to the mesh body is exposed from the inner surface of the mold body, in other words, In this case, the steel material is embedded in both the concrete of the mold body and the concrete of the concrete wall. Therefore, the bondability between the concrete of the mold body and the mesh body, and the concrete of the mold body And the steel material, and the concrete wall and the steel material can be sufficiently secured.

  In addition, the upper seal holding plate that holds the sealing material for preventing rainwater intrusion on the upper end side of the inner surface of the remaining mold is provided so as to cross the width direction of the mold body. Therefore, it is possible to prevent rainwater from entering the joint between the remaining mold and the concrete wall over a long period of time, while suppressing deterioration of the rainwater invasion prevention sealing material due to ultraviolet rays.

  Further, since the mesh body and the steel material are respectively provided with anticorrosion coating, the rust preventive effect of the mesh body and the steel material, in other words, without increasing the thickness of the concrete of the mold body. Then, the rust prevention effect in the concrete of the said mold body can be ensured.

  A fourth feature of the present invention is that, in a remaining formwork used for a wall rail constructed on a floor slab at a high place, a formwork body made of concrete, embedded in the formwork body, and subjected to anticorrosion coating on the surface. A reticulated body that reinforces the formwork body, a steel member joined to the reticulate body, a part of which is exposed from the inner surface of the formwork body, and a surface is subjected to anticorrosion coating, and the formwork A lower seal holding plate provided at the lower end side of the inner side surface of the main body so as to cross the width direction of the mold main body, and holding a sealing material for preventing concrete leakage; and an upper end of the inner side surface of the mold main body And an upper seal holding plate that is provided on the side so as to traverse along the width direction of the mold body and holds a sealing material for preventing rainwater intrusion.

  According to the fourth feature, the mesh body is embedded in the concrete of the mold body, and a part of the steel material joined to the mesh body is exposed from the inner surface of the mold body, in other words, In this case, the steel material is embedded in both the concrete of the mold body and the concrete of the concrete wall. Therefore, the bondability between the concrete of the mold body and the mesh body, and the concrete of the mold body And the steel material, and the concrete wall and the steel material can be sufficiently secured.

  Further, since the lower seal holding plate for holding the concrete leakage prevention sealing material on the lower end side of the inner surface of the remaining mold is provided so as to cross along the width direction of the mold body, During the construction of the wall rail, it is possible to prevent the concrete cast inside the remaining formwork from leaking from the gap between the remaining formwork and the floor slab.

  Further, the upper seal holding plate that holds the sealing material for preventing rainwater intrusion is provided at the upper end of the inner surface of the remaining mold so as to cross the width direction of the mold body. Therefore, it is possible to prevent rainwater from entering the joint between the remaining mold and the concrete wall over a long period of time, while suppressing deterioration of the rainwater invasion prevention sealing material due to ultraviolet rays.

  In addition, since the mesh body and the steel material are each provided with anticorrosion coating, the rust preventive effect of the mesh body and the steel material, in other words, without increasing the thickness of the concrete of the mold body. Then, the rust prevention effect in the concrete of the said mold body can be ensured.

  According to a fifth feature of the present invention, in the method of constructing a wall rail on the outer end side of a bridge slab, a remaining formwork comprising any one of the second to fourth features is prepared. The engaging projection provided on the mounting bracket fixed to one end of the remaining mold is moved to the outer end side of the floor slab by moving the remaining mold toward the outer end of the floor slab in a lying posture. A pin engaging step for engaging the guide portion formed on the bracket fixed to the inner side of the floor slab, and after the pin engaging step, the engaging protrusion is engaged with the guide portion. A posture changing step of changing the residual mold from a lying posture to a standing posture by rotating the residual mold with the engaging projection as a fulcrum; and after the posture changing step, Fastening step for fastening to the bracket And after completion of the fastening step, an inner mold is erected on the inside of the remaining mold in the floor slab, and concrete is placed between the remaining mold and the inner mold, The present invention includes a concrete wall forming step of forming a concrete wall integrally bonded to the inner side surface of the remaining mold by hardening the concrete.

  According to the fifth feature, the same operation as that of any one of the second to fourth features is achieved.

  According to any one of the first to fifth features of the present invention, the bondability between the formwork body concrete and the mesh body, the formwork body concrete and the steel material And the bondability between the concrete wall concrete and the steel material can be sufficiently secured, so that the rigidity and strength of the mold body can be sufficiently increased.

  Further, since it is possible to ensure the rust prevention effect in the concrete of the mold body without increasing the thickness of the concrete of the mold body, the remaining mold can be reduced in weight. The efficiency of the mounting work can be improved.

  According to the second feature of the present invention, the fourth feature of the present invention, or the fifth feature of the present invention, during the construction of the wall rail, the concrete placed inside the residual formwork is Since it can prevent leaking from the gap between the remaining formwork and the floor slab, the efficiency of construction work of the wall rail can be improved.

  According to any one of the third to fifth features of the present invention, it is possible to prevent rainwater from entering the joint between the remaining formwork and the concrete wall for a long period of time. Therefore, the durability of the wall rail can be improved.

  An embodiment of the present invention will be described with reference to FIGS. Here, FIG. 1 is a cross-sectional view of a wall rail according to an embodiment of the present invention, FIG. 2 is a view of a remaining mold according to the embodiment of the present invention, and FIG. 3 is a top view of FIG. FIG. 4 is a view taken along line IV-IV in FIG. 2, FIG. 5 is an enlarged view of the arrow V in FIG. 1, and FIG. 6 is an enlarged view of the arrow VI in FIG. 7 to 9 are views for explaining a method for constructing a wall rail according to an embodiment of the present invention.

  As shown in FIG. 1, a wall rail 1 according to an embodiment of the present invention is a structure constructed on a bridge floor slab (an example of a height floor slab) 3, and a specific configuration of the wall rail 1 Etc. is as follows. The floor slab 3 which is the peripheral structure of the wall rail 1 includes a bottom plate 5 provided on a bridge girder (not shown) of the bridge, an H-shaped steel material 7 provided on the upper surface of the bottom plate 5 and reinforcing the bottom plate 5; A concrete floor 9 integrally joined to the upper surface of the bottom plate 5 is provided. The concrete floor 9 is formed by placing concrete on the upper side of the bottom plate 5.

  A plurality of (only one shown) concrete residual molds 11 are erected on the outer end of the bottom plate 5, and the plurality of residual molds 11 are integrally formed by a connector (not shown). It is connected. And the concrete structure of the residual mold 11 is as follows.

  That is, as shown in FIGS. 2 to 4, the remaining mold 11 includes a square-shaped mold body 13, and the mold body 13 is made of concrete. An expanded metal 15 (an example of a net-like body) that reinforces the mold body 13 is embedded in substantially the entire region of the mold body 13, and the expanded metal 15 is made of iron, stainless steel, or the like. . Further, the expanded metal 15 has a corrosion-proof coating typified by a double coat cationic electrodeposition coating or the like on the surface.

  A pair of channel steel materials (one of the shape steel materials) 17 extending in the vertical direction (the height direction of the mold body 13) is integrally joined to the expanded metal 15, and a part of each channel steel material 17 is joined. (In the embodiment of the present invention, about half of the cross-sectional height of the channel steel material 17) is exposed from the inner surface of the mold body 13. In addition, a plurality of mounting holes 19 are formed at intervals in each channel steel material 17, and the plurality of mounting holes 19 are used for mounting the coupling tool, the separate, and the like. Further, each grooved steel material 17 is provided with an anticorrosion coating represented by a double coat cationic electrodeposition coating on the surface. In addition to the pair of channel steel members 17 extending in the vertical direction, a plurality of channel steel members extending in the width direction of the mold body 13 are joined to the expanded metal 15 so as to connect the pair of channel steel members 17. Alternatively, instead of the channel steel material 17, another shape steel material such as an H-shaped steel material may be used.

  As shown in FIGS. 1, 4, and 6, a lower seal holding plate 23 that holds a sealing material 21 for preventing concrete leakage is provided on the lower end side of the inner surface of the mold body 13. The base end portion of the lower seal holding plate 23 is integrally joined to the expanded metal 15. The lower seal holding plate 23 is made of iron or the like, and has an anticorrosion coating typified by a double coat cationic electrodeposition coating on the surface. Furthermore, the tip of the lower seal holding plate 23 is inclined upward with respect to the thickness direction of the mold body 13 (in other words, the horizontal direction). In the embodiment of the present invention, the sealing material 21 for preventing concrete leakage is a sealing plate 21a made of synthetic rubber and a paste-like caulking material 21b made of synthetic rubber or synthetic resin. May be omitted.

  As shown in FIGS. 1, 3, and 5, the upper seal holding plate 27 that holds the sealing material 25 for preventing rainwater intrusion is provided on the upper end side (near the upper end) of the inner surface of the mold body 13. Is provided so as to cross along the width direction of the mold body 13, and the base end portion of the upper seal holding plate 27 is integrally joined to the expanded metal 15. The upper seal holding plate 27 is made of iron or the like, and has an anticorrosion coating typified by a double coat cationic electrodeposition coating on the surface. Furthermore, the upper seal holding plate 27 is inclined with respect to the thickness direction of the mold body 13 so that the tip side is lowered. In the embodiment of the present invention, the rainwater intrusion preventing sealing material 25 is a paste-like caulking material made of synthetic rubber or synthetic resin.

  Subsequently, a configuration other than the remaining mold 11 among the configurations of the wall height column 1 will be described.

  As shown in FIG. 1, a plurality of (one shown) brackets 29 are spaced along the length direction of the floor slab 3 (front and back direction toward the paper surface in FIG. 1) on the outer end side of the upper surface of the bottom plate 5. Each bracket 29 is formed with an L-shaped guide elongated hole (an example of a guide portion) 31, and each guide elongated hole 31 includes a horizontal portion 31 a and a vertical portion 31 b. Have. Each bracket 29 is formed with a plurality of bolt holes 33 (see FIG. 2).

  A mounting bracket 35 is fixed to the lower end side of the pair of channel steel members 17 in each remaining mold 11, and each mounting bracket 35 is inserted in the guide elongated hole 31 of the corresponding bracket 29 in the inward direction of the floor slab 3. Engagement pins (an example of engagement protrusions) 37 engaged with each other. Each mounting bracket 35 is formed with a plurality of bolt holes 39 (see FIG. 2). Each mounting bracket 35 is fastened to the corresponding bracket 29 by a fastening bolt 41 inserted through the bolt holes 33 and 39 in matching relation.

  A concrete wall 43 is integrally joined to the inner side surfaces of the plurality of remaining molds 11, and the upper surface of the concrete wall 43 is horizontally lowered so as to be gradually lowered toward the inner direction of the floor slab 3. It is inclined with respect to it. The concrete wall 43 is formed by placing concrete between the remaining mold 11 and a wooden inner mold 45 erected on the inside of the remaining mold 11 via a separate (not shown) or the like. The wooden inner mold 45 is removed after the wall rail 1 is constructed. Furthermore, a reinforcing bar unit 47 for reinforcing the concrete wall 43 is appropriately embedded in the concrete wall 43.

  Then, the construction method of the wall rail of the bridge which concerns on embodiment of this invention is demonstrated.

  The construction method of the wall rail according to the embodiment of the present invention is a method of constructing the wall rail 1 on the outer end side of the floor slab 3 of the bridge by the work of the worker M (see FIG. 8). , (I) a pin engaging step, (ii) a posture changing step, (iii) a fastening step, (iv) a repeating step, and (v) a concrete wall forming step.

(i) Pin engagement step As shown in FIGS. 7 (a) and 7 (b), the remaining mold 11 is moved to the outer end direction of the floor slab 3 (in other words, to the outer end direction of the bottom plate 5) in a lying posture. As a result, the engaging pins 37 of the pair of mounting brackets 35 fixed to the remaining mold 11 are engaged with the horizontal portions 31 a of the guide long holes 31 in the corresponding brackets 29 from the inside of the floor slab 3. Further, as shown in FIG. 7C, by lowering one end side (lower end side) of the remaining mold 11, the engagement pin 37 in the pair of mounting brackets 35 is perpendicular to the guide slot 31 of the corresponding bracket 29. Each is engaged so as to drop into the portion 31b.

  Note that the seal plate 21 a is placed on the outer end portion of the bottom plate 5 during the pin engagement step.

(ii) Posture change step
(i) After the pin engaging step, as shown in FIGS. 8 and 9A, the engaging pin 37 in the pair of mounting brackets 35 is engaged with the vertical portion 31b of the guide slot 31 in the corresponding bracket 29. In the combined state, the remaining mold 11 is rotated from the lying position to the standing position by rotating the remaining mold 11 with the engaging pin 37 as a fulcrum.

(iii) Conclusion step
(ii) After the posture changing step, as shown in FIG. 9B, the remaining mold 11 is slightly lifted so that the seal plate 21a is not displaced, and the bolt holes 39 in the pair of mounting brackets 35 are accommodated. Align with the bolt holes 33 in the brackets 29 to be fitted. Then, the fastening bolts 41 are respectively inserted into the plurality of pairs of bolt holes 33 and 39 that are in a matching relationship, and the pair of mounting brackets 35 are fastened to the corresponding brackets 29 by the plurality of fastening bolts 41, respectively. Thereby, the residual mold 11 can be firmly attached to the outer end portion (outer end portion of the bottom plate 5) of the floor slab 3 before the concrete floor 9 is placed.

  In addition, after each of the pair of mounting brackets 35 is fastened to the corresponding bracket 29, the caulking material 21 b is filled between the lower surface of the lower seal holding plate 23 and the upper surface of the bottom plate 5.

(iv) Repeat step
(iii) After the fastening step is completed, the plurality of remaining molds 11 can be firmly attached to the outer end portion of the bottom plate 5 by repeating the (i) pin engaging step to the (iii) fastening step. And the some residual formwork 11 is integrally connected by the said some connector.

(v) Concrete wall formation step
(iv) After completion of the repetition step, concrete is cast on the upper side of the bottom plate 5 and the concrete is hardened, thereby forming a concrete floor 9 integrally joined to the upper surface of the bottom plate 5. Next, a plurality of wooden inner molds 45 are erected inside the remaining mold 11 on the concrete floor 9. Then, concrete is placed between the remaining mold 11 and the inner mold 45, and the concrete is hardened, thereby forming a concrete wall 43 integrally joined to the inner surface of the remaining mold 11.

  In addition, after forming the concrete wall 43, a sealing material (caulking material) 25 is filled between the lower surface of each upper seal holding plate 27 and the upper surface of the concrete wall 43.

  As described above, the wall rail 1 can be constructed on the outer end side of the floor slab 3 of the bridge.

  In addition, a method comprising (i) a pin engagement step, (ii) a posture changing step, and (iii) a fastening step, in other words, a part of a method for constructing a wall rail according to an embodiment of the present invention. Also, it can be grasped as a method of attaching the floor slab in which the remaining mold 11 is attached to the outer end portion of the floor slab 3.

  Then, the effect | action and effect of embodiment of this invention are demonstrated.

  The expanded metal 15 is embedded in the concrete of the mold body 13, and a part of the grooved steel material 17 joined to the expanded metal 15 is exposed from the inner surface of the mold body 13. Since the steel material 17 is embedded in both the concrete of the concrete wall 43 of the mold body 13, the bondability between the concrete of the mold body 13 and the expanded metal 15, the concrete of the mold body 13 and the channel steel 17 And the bondability between the concrete of the concrete wall 43 and the channel steel 17 can be sufficiently ensured.

  Further, a lower seal holding plate 23 that holds the sealing material 21 for preventing concrete leakage is provided on the lower end side of the inner surface of the remaining mold 11 so as to cross the width direction of the mold body 13. During the construction of the wall rail 1, the concrete cast inside the residual mold 11 (specifically, the concrete cast when forming the concrete floor 9) is a gap between the residual mold 11 and the bottom plate 5. Can be prevented from leaking (the leakage prevention effect of the cast concrete). In particular, since the tip of the lower seal holding plate 23 is inclined upward with respect to the thickness direction of the mold body 13, the lower seal holding plate 23 is caused by the internal pressure of the concrete placed inside the remaining mold 11. The wedge effect acts on the tip of the metal, and the holding force of the lower seal holding plate 23 is strengthened, so that the leakage preventing action of the cast concrete can be enhanced.

  Furthermore, an upper seal holding plate 27 that holds the sealing material 25 for preventing rainwater intrusion at the upper end of the inner surface of the mold body 13 is provided so as to cross the width direction of the mold body 13. Since the upper surface of the concrete wall 43 is inclined with respect to the horizontal direction so as to be gradually lowered toward the inward direction of the floor slab 3, the remaining type is suppressed while suppressing deterioration of the sealing material 25 for preventing rainwater intrusion due to ultraviolet rays. It is possible to prevent rainwater from entering the joint between the frame 11 and the concrete wall 43 over a long period of time (rainwater intrusion prevention function). In particular, since the upper seal holding plate 27 is inclined with respect to the thickness direction of the mold body 13 so that the tip side becomes lower, the tip of the upper seal holding plate 27 drains rainwater on the inner surface of the mold body 13. It can be cut off, and the rainwater infiltration prevention action can be enhanced.

  Further, the expanded metal 15, the channel steel member 17, the lower seal holding plate 23, and the upper seal holding plate 27 are each provided with anticorrosion coating on the surface, so that the thickness of the concrete of the mold body 13 is not increased. However, the antirust effect of the expanded metal 15, the grooved steel member 17, the lower seal holding plate 23, and the upper seal holding plate 27, in other words, the antirust effect in the concrete of the mold body 13 can be ensured.

  As described above, according to the present invention, the bondability between the concrete of the mold body 13 and the expanded metal 15, the bondability between the concrete of the mold body 13 and the channel steel 17, and the concrete and the groove shape of the concrete wall 43. Since sufficient bondability with the steel material 17 can be ensured, the rigidity and (tensile strength, bending strength) of the mold body 13 can be sufficiently increased.

  Moreover, since the rust prevention effect in the concrete of the mold body 13 can be ensured without increasing the thickness of the concrete of the mold body 13, the remaining mold 11 can be reduced in weight, and the remaining mold 11 can be reduced. The efficiency of the mounting work can be improved.

  Furthermore, during the construction of the wall rail 1, it is possible to prevent the concrete placed inside the residual mold 11 from leaking through the gap between the residual mold 11 and the bottom plate 5, thereby improving the efficiency of the construction of the wall rail 1. Can be made.

  Moreover, since it is possible to prevent rainwater from entering the joint between the remaining mold 11 and the concrete wall 43 over a long period of time, the durability of the wall column 1 can be improved.

  In addition, this invention is not restricted to description of the above-mentioned embodiment, In addition, it can implement in a various aspect. Further, the scope of rights encompassed by the present invention is not limited to these embodiments.

It is sectional drawing of the wall rail according to the embodiment of the present invention. It is the figure which looked at the residual formwork concerning the embodiment of the present invention from the back. It is the figure which looked at FIG. 2 from the top. FIG. 4 is a view taken along line IV-IV in FIG. 2. It is an enlarged view of the arrow V part in FIG. It is an enlarged view of the arrow view part VI in FIG. It is a figure explaining the construction method of the wall rail which concerns on embodiment of this invention. It is a figure explaining the construction method of the wall rail which concerns on embodiment of this invention. It is a figure explaining the construction method of the wall rail which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall railing 3 Floor slab 5 Bottom plate 7 H-shaped steel material 9 Concrete floor 11 Remaining formwork 13 Formwork main body 15 Expanded metal 17 Grooved steel material 21 Sealing material 23 Lower seal holding plate 25 Sealing material 27 Upper seal holding plate 29 Bracket 29 Installation Metal fitting 31 Guide long hole 31a Horizontal portion 31b Vertical portion 33 Bolt hole 35 Mounting bracket 37 Engagement pin 39 Bolt hole 41 Fastening bolt 43 Concrete wall 45 Inner formwork 47 Reinforcement unit

Claims (9)

In the wall height of the bridge built on the bridge slab,
A remaining mold erected on the outer edge of the floor slab,
A concrete wall that is integrally joined to the inner surface of the remaining mold and formed by placing concrete between the remaining mold and the inner mold disposed inside the remaining mold; Equipped,
The remaining formwork is
A formwork main body standing on the outer end of the floor slab and made of concrete;
A net that is embedded in the formwork body and has anti-corrosion coating on the surface, and reinforces the formwork body;
A bridge wall rail, comprising: a steel member joined to the mesh body, a part of which is exposed from an inner surface of the formwork main body, and has a surface subjected to anticorrosion coating. In the residual formwork used for the wall rails built on the floor slabs at high places,
A formwork body made of concrete;
A net that is embedded in the formwork body and has anti-corrosion coating on the surface, and reinforces the formwork body;
A steel material joined to the mesh body, a part of which is exposed from the inner surface of the mold body, and the surface is subjected to anticorrosion coating,
A lower seal holding plate provided at the lower end side of the inner surface of the mold body so as to cross the width direction of the mold body and holding a sealing material for preventing concrete leakage. Remaining formwork. In the residual formwork used for the wall rails built on the floor slabs at high places,
A formwork body made of concrete;
A net that is embedded in the formwork body and has anti-corrosion coating on the surface, and reinforces the formwork body;
A steel material joined to the mesh body, a part of which is exposed from the inner surface of the mold body, and the surface is subjected to anticorrosion coating,
An upper seal holding plate provided on the upper end side of the inner side surface of the formwork body so as to cross the width direction of the formwork body and holding the sealing material for preventing rainwater intrusion. Residual formwork characterized by that. In the residual formwork used for the wall rails built on the floor slabs at high places,
A formwork body made of concrete;
A net that is embedded in the formwork body and has anti-corrosion coating on the surface, and reinforces the formwork body;
A steel material joined to the mesh body, a part of which is exposed from the inner surface of the mold body, and the surface is subjected to anticorrosion coating,
A lower seal holding plate that is provided on the lower end side of the inner surface of the mold body so as to cross the width direction of the mold body, and holds a sealing material for preventing concrete leakage;
An upper seal holding plate provided on the upper end side of the inner side surface of the formwork body so as to cross the width direction of the formwork body and holding the sealing material for preventing rainwater intrusion. Residual formwork characterized by that.   The residual mold according to claim 2 or 4, wherein the lower seal holding plate has an anti-corrosion coating on the surface thereof.   The front end portion of the lower seal holding plate is inclined upward with respect to the thickness direction of the formwork main body. Residual formwork as described in the item.   The residual mold according to claim 3 or 4, wherein the upper seal holding plate has an anticorrosive coating on the surface.   The said upper seal holding | maintenance board is inclined with respect to the thickness direction of the said mold main body so that the front end side may become low, Either of Claim 3, Claim 4, or Claim 7 characterized by the above-mentioned. Residual formwork as claimed in claim. In the method of building a wall rail on the outer edge side of the bridge slab,
A residual mold according to any one of claims 2 to 8 is prepared,
By moving the residual formwork in an inclined position toward the outer end of the floor slab, an engagement protrusion provided on a mounting bracket fixed to one end side of the residual formwork is provided on the outer end side of the floor slab. A pin engaging step for engaging the guide portion formed on the fixed bracket from the inside of the floor slab;
After the pin engagement step, the posture in which the remaining mold is laid down by rotating the remaining mold with the engaging protrusion as a fulcrum while the engaging protrusion is engaged with the guide portion. A posture changing step for changing from a standing posture to a standing posture;
After the end of the posture changing step, a fastening step of fastening the mounting bracket to the bracket;
After completion of the fastening step, an inner mold is erected on the inner side of the remaining mold on the floor slab, and concrete is placed between the remaining mold and the inner mold to harden the concrete. And a concrete wall forming step for forming a concrete wall integrally joined to the inner side surface of the remaining formwork.

Images