JP3559395B2 - Highway construction method - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a construction method of a railing composed of columns made of natural stone or the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a construction method in which a pillar made of natural stone is used as a pillar of a protective fence, a box is formed on a ground cover, a pillar made of natural stone is placed therein, and fixed with mortar or the like.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned protective fence, the pillar of natural stone placed on the surface of the ground is self-supporting by its own weight, but when strong horizontal stress is applied, there is a possibility that the pillar may fall and is dangerous. Further, the strength of the natural stone is not stable, and there is a problem that the stone is cracked or broken particularly under a strong impact force.
In addition, heavy equipment called scissors is used in the construction that handles stone members, but construction companies with metal railing do not generally use this kind of construction equipment, so there is a demand for a construction method that can perform construction without scissors .
[0004]
[Means for Solving the Problems]
According to the construction method of a railing according to claim 1 of the present invention, a base plate is screwed to an anchor bolt embedded in concrete constituting a ground covering of a bridge, a reinforcing material is erected on the base plate, and the upper and lower surfaces are extended. struts through the vertical hole is made of non-metallic inorganic material transverse holes are penetrating over two opposite sides while being drilled, the reinforcing material is suspended in the hanger, which is inserted through the transverse hole to be placed on the supporting portion made of covered state by fitting the L-shaped welded to the upper portion of the base of Rutotomoni reinforcement, the hanger after it is erected is withdrawn, hanger is withdrawn those Sakutai is attached to the transverse bore of the after, in which the reinforcing member on the base plate is attached to the embedded anchor bolts Jibuku, workability since construction after construction of strut殖以can be performed by a dry construction method Good, support side The support can be hung by inserting a hanging tool through the drilled horizontal hole, no special jig is required, and the support is covered with the reinforcing material, so the support is fragile such as natural stone or artificial stone. also made with suitable reinforced reinforcing member a material.
According to the construction method of the balustrade according to the second aspect of the present invention, a steel rod having external threads threaded at both ends is inserted into a lateral hole drilled on the side surface of the column, and an eye nut is screwed into the external threads at both ends. It is made as a hanging tool, and a string is inserted into the ring at both ends of the hanging tool , and the strut is suspended and constructed with this string, and it is easy to attach the hanging tool to the pole. In addition, the attached suspension does not come off or break.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Reference numeral 1 denotes a pillar made of stone or the like, and a fence 2 is suspended between the pillars 1 and 1 to form a protective fence. A lateral hole 12 is formed in both opposing side surfaces of the column 1, and a bolt is inserted through the lateral hole 12 to screw the fence 2 to the column 1. In the present embodiment, the fence 2 is shown as being made by mounting the vertical beams 22 at appropriate intervals between a pair of upper and lower horizontal beams 21. However, the fence 2 is not limited to this, and is composed of only horizontal beams. May be used, or a panel type formed of a panel such as an aluminum plate may be used.
[0006]
An example of a construction method when the protective fence of the present invention is constructed on a ground covering of a bridge will be described.
First, the anchor bolt 4 is buried in the ground cover so that its male screw portion is exposed, and the base plate 31 of the reinforcing material 3 is fitted and screwed into the male screw portion of the anchor bolt 4 to reinforce it on the ground cover. Material 3 is erected. Next, the base plate cover 32 is wound around the lower part of the reinforcing member 3 so as to cover the L-shaped fitting and the screw portion of the anchor bolt 4 under the reinforcing member 3.
Next, a steel rod 71 having external threads 72 threaded at both ends is passed through the lateral hole 12 penetrated over the upper two side surfaces of the column 1, and an eye nut 73 is screwed into the external threads 72 at both ends thereof. A hanging tool 7 is provided. A string such as a rope is inserted through the ring portions of the eye nuts 73 at both ends of the suspending tool 7, and the other end of the string is lifted by a crane or the like so that the support 1 is covered with the reinforcing member 3. It is erected. After the support 1 is erected, the eye nut 73 at the end of the suspension 7 inserted in the lateral hole 12 formed in the upper part of the side surface of the support 1 is removed, and the suspension 7 is removed. Since the upright supporting column 1 is provided with the reinforcing member 3 attached to the ground cover along the central axis thereof, it does not easily fall down even when a large stress is applied in the horizontal direction, so that it does not fall. It does not scatter when damaged.
Next, a mounting bracket is screwed into the lateral hole 12 on the side surface of the support 1, and the horizontal beam 21 of the fence 2 is mounted on the mounting, and the fence 2 is mounted between the supports 1 to form a protective fence. Thereafter, a reflector is inserted and mounted in the lateral hole 12 on the side opposite to the side where the fence body 2 is mounted on the pillar 1 erected at the end. Since the reflector is attached to the side surface of the pillar 1, the pillar 1 is easily recognized by a driver such as an automobile by reflecting light emitted from the automobile at night.
Finally, the cap 13 is fitted on the upper end of the column 1 to complete the construction.
[0007]
Next, an example of a configuration of a railing used in the method of constructing a railing according to the present invention will be described.
The column 1 is a columnar body having a substantially quadrangular cross section, and its square surface is formed, and a vertical hole 11 is bored at the center of the horizontal cross section vertically. Lateral holes 12 are formed in two opposing side surfaces of the column 1 at one or two appropriate positions on each surface. The horizontal hole 12 is configured so that a rope can be suspended through the horizontal hole 12 when the column 1 is moved by a crane or the like. The support 1 is made of a nonmetallic inorganic material such as natural stone, artificial stone or concrete. In addition, the shape of the column 1 is not limited to the above-mentioned shape, and may be any shape such as a column shape that appropriately considers the surrounding scenery.
[0008]
The reinforcing material 3 has its base plate 31 screwed to anchor bolts 4 embedded in a ground covering such as a bridge, and is erected on the ground covering. An annular base plate cover 32 is fitted on the base plate 31, concealing the base plate 31 and the anchor bolts 4 to improve the appearance. The reinforcing column 3 is made of an H-shaped steel having a circumscribed circle diameter smaller than the vertical hole diameter 11 of the column 1, and a base plate 31 is welded to the base thereof. The unit 33 is provided. The vertical hole 11 of the column 1 is covered with the reinforcing member 3 and is placed on the support portion 33. The web portion 34 of the reinforcing member 3 at a position corresponding to the position of the horizontal hole 12 on the column 1 is cut out in a substantially U shape, and the web portion of the reinforcing member 3 at a position corresponding to the position of the horizontal hole 12 below. A hole is drilled in 34. In this embodiment, the reinforcing member 3 is made of an H-shaped steel. However, the reinforcing member 3 is not limited to the H-shaped steel, but may be made of another shaped steel such as a steel pipe. The surface may be appropriately subjected to surface treatment such as plating or painting for rust prevention.
[0009]
Reference numeral 5 denotes a reflection plate, in which reflection beads or the like are dispersedly arranged on the surface of the molded product, and mounting projections are formed on the back surface. Reference numeral 6 denotes a spring material. Both ends of the substrate 61 of the spring material 6 are bent at substantially right angles to form a leg 62, and the tip of the leg 62 is bent into a J-shape to form a locking portion 621. I have. The projection on the back surface of the reflecting plate 5 is inserted into a mounting hole formed in the center of the spring member 6, and is crushed by heating, and the reflecting plate 5 is attached to the spring member 6 to form a reflector.
[0010]
The spring member 6 is made of an elastic plate material such as a steel plate. To attach a reflector to the lateral hole 12 formed on the side surface of the column 1, the leg 62 of the spring member 6 is bent inward to form the lateral hole 12. When the reflector is inserted into the hole, the back surface of the reflector 5 is brought into contact with the step formed at the entrance of the horizontal hole formed in the side surface of the column, and the reflector is mounted at the same level as the surface of the column. At this time, the locking portion 621 at the tip of the leg 62 provided on the back surface of the reflection plate 5 is engaged with the inner wall of the horizontal hole so that the reflector does not fall out of the horizontal hole.
[0011]
【The invention's effect】
According to the construction method of a railing according to claim 1 of the present invention, a base plate is screwed to an anchor bolt embedded in concrete constituting a ground covering of a bridge, a reinforcing material is erected on the base plate, and the upper and lower surfaces are extended. struts through the vertical hole is made of non-metallic inorganic material transverse holes are penetrating over two opposite sides while being drilled, the reinforcing material is suspended in the hanger, which is inserted through the transverse hole to be placed on the supporting portion made of covered state by fitting the L-shaped welded to the upper portion of the base of Rutotomoni reinforcement, the hanger after it is erected is withdrawn, hanger is withdrawn those Sakutai is attached to the transverse bore of the after, in which the reinforcing member on the base plate is attached to the embedded anchor bolts Jibuku, workability since construction after construction of strut殖以can be performed by a dry construction method Good, support side The support can be hung by inserting a hanging tool through the perforated horizontal hole, no special jig is required, and the support is covered with the reinforcing material, so the support is fragile such as natural stone or artificial stone. It reinforced reinforcing material in the material, made with suitable without also fall easily when a large stress applied to the horizontal direction.
According to the construction method of the balustrade according to claim 2 of the present invention, a steel rod having external threads screwed at both ends is inserted into a lateral hole drilled on the side surface of the support, and an eye nut is screwed into the external threads at both ends. It is made as a hanging tool, and a string is inserted into the ring part at both ends of this hanging tool , and the strut is suspended and constructed with this string-shaped body , and it is easy to attach the hanging tool to the pillar. In addition, the attached suspension does not come off or break.

[Brief description of the drawings]
FIG. 1 is a front view of a railing showing an example of an embodiment of a method of building a railing according to the present invention.
FIG. 2 is an assembly diagram showing an example of an embodiment of a column assembly in the method of constructing a railing according to the present invention.
FIG. 3 is a partially cutaway detailed view of a lower portion of a support column in FIG.
4A and 4B show an example of an embodiment of a reflector used in the present invention, wherein FIG. 4A is a front view, and FIG. 4B is a right side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support | pillar 11 Vertical hole 12 Horizontal hole 13 Cap 2 Fence body 21 Horizontal beam 22 Vertical beam 3 Reinforcement material 31 Base plate 32 Base plate cover 33 Support part 34 Web part 4 Anchor bolt 5 Reflector 6 Spring material 61 Substrate 62 Leg part 621 locking Part 7 Hanging tool 71 Steel rod 72 Male screw 73 Eye nut

Claims (2)

A base plate is screwed to anchor bolts buried in concrete constituting a ground covering of the bridge, a reinforcing material is erected on the base plate, and a vertical hole penetrating the upper and lower surfaces is formed and opposed to each other. posts made of non-metallic inorganic material transverse holes are penetrating over two sides, an upper portion of the base portion of the lateral hole is suspended in inserted through the hanger to the covered state to the reinforcement Rutotomoni reinforcement Is placed on a supporting portion made of L-shaped metal fittings welded to the support member , the hanging tool is removed after standing, and the fence is attached to the lateral hole after the hanging tool is removed. The construction method of a railing, characterized by: A steel rod with external threads threaded at both ends is inserted through a lateral hole drilled on the side of the column, and eye nuts are screwed into the external threads at both ends to form a hanging tool. The method according to claim 1, wherein a string-like body is inserted through the portion, and the strut is suspended by the string-like body.

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