JP3063969B2 - Embedded anchor for mounting support and structure for mounting support to side wall using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded anchor for mounting a support buried in a side wall made of reinforced concrete and a structure for mounting the support to the side wall using the anchor.

[0002]

2. Description of the Related Art When installing soundproof walls beside expressways,
There are many places where the expressway is elevated, and the support of the soundproof wall must be supported by the side wall. At this time, these pillars are formed by shaving the side walls and embedding one ends of anchor bolts, passing these anchor bolts through through holes formed in the pillars, fixing them with nuts, and supporting the pillars on the side walls.

[0003]

However, when the column is supported by the side wall as described above, the side wall has to be cut and an anchor bolt has to be embedded, which has been a very troublesome operation. In addition, there is a method of attaching an anchor bolt beforehand when making the side wall. However, when the support is not attached, the bolt projects from the side wall, which is dangerous and has a bad appearance.

[0004] The present invention has been made in view of the above-mentioned problems, and in which a buried anchor is buried when a side wall is made in advance. It is an object of the present invention to provide an embedded anchor for mounting a support, which can be easily mounted and in which bolts and the like do not protrude from a side wall even when unnecessary, and a structure for mounting the support to a side wall using the anchor.

[0005]

According to a first aspect of the present invention, an embedded anchor having a screw hole at one end is embedded in a side wall made of reinforced concrete, and the embedded anchor has an opening end of the screw hole at the side wall. It is located on one side, and its rear end has an outer diameter smaller than the outer diameter of the part having the screw hole inside, and a screw is cut on the outer periphery of this part, and two nuts screwed to this outer screw part The anchor plate is clamped by two nuts through the hole of the anchor plate in the outer periphery between the nuts and fixed in a flange shape. When the embedded anchor is unnecessary, only the bolt head is exposed from the open end exposed on one side of the side wall. An embedded anchor for mounting a support, in which a bolt protruding from the outer surface was screwed into the screw hole, or a cap was similarly fitted in the screw hole.

According to a second aspect of the present invention, an embedded anchor having a screw hole at one end is embedded in a side wall made of reinforced concrete, and the embedded anchor positions an open end of the screw hole on one side surface of the side wall. An inner diameter of the back end is smaller than an outer diameter of a portion having a screw hole therein, a thread is cut on an outer periphery of the portion, and an anchor is provided on an outer periphery between two nuts screwed to the outer peripheral thread portion. The anchor plate is sandwiched between two nuts and fixed in a flange shape through the hole of the plate, and one end of an anchor bolt or the like is screwed into a screw hole of the embedded anchor, and the other end of the anchor bolt or the like protruding from the side wall. , A support was attached to the side wall.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Side wall 2 provided on the side of road body 1 of the highway
Is made of reinforced concrete provided with a reinforcing bar 3 as shown in FIGS. When molding this side wall 2,
As shown in FIG. 1, the embedded anchor 4 is embedded in the side wall 2. This embedded anchor 4 is, as shown in FIG.
A screw hole 4a having an opening at one end is provided at one end, and an outer peripheral screw portion 4b at the other end is covered with a quadrilateral anchor plate 5, and outer peripheral screw portions 4b on both sides of the anchor plate 5 are provided.
, Nuts 6, 6 are screwed on the anchor plate 5, and the anchor plate 5 is clamped and fixed.

The embedded anchor 4 is fixed to the form plate by screwing an end of a bolt 7 passed through a hole formed in a form plate (not shown) of the side wall 2 into the screw hole 4a. Then, concrete is poured into the formwork, and after the concrete hardens, the bolt 7 is removed, and the formwork plate is removed. In this way, a large number of embedded anchors 4 are buried in the upper and lower portions of the side wall 2 at intervals with the opening of the screw hole 4a exposed on the back surface 2a of the side wall 2. When the respective embedded anchors 4 are unnecessary, as shown in FIG. 1, a bolt 7 is screwed into a screw hole 4a of each embedded anchor 4 or a cap 7 'is fitted.

When attaching a soundproof wall to the side wall 2, the bolts 7 or caps 7 'are removed, and one end of each anchor bolt 8 is screwed to each embedded anchor 4 as shown in FIG. At that time, an eccentric washer 9 is attached to the anchor bolt 8 screwed to the embedded anchor 4 at the upper part of the side wall.
In some cases, adjustment may be performed by covering the head. As shown in FIG. 4, each of these anchor bolts 8 turns a nut 10 previously screwed to the outer periphery, tightens each of these nuts 10, and fixes each of the anchor bolts 8 to the embedded nut 4. As a result, a plurality of anchor bolts 8 are projected horizontally above and below the back surface 2a of the side wall 2, respectively. At this time, when the back surface 2a of the side wall 2 to which the anchor bolt 8 is attached is not vertical, as shown in FIGS. 5 and 6, the eccentric washer 9 or the nut 10 on the outer periphery of the upper or lower anchor bolt 8 and the nut The liner plate 11 is sandwiched between them, so that the mounting surface of the support described later is vertical.

A nut 12 is screwed to the tip of each anchor bolt 8. This nut 12 is used to screw one end of the anchor bolt 8 into the screw hole 4a of the embedded anchor 4 and to tighten it when tightening. After fixing the anchor bolts 8 to the embedded anchor 4 after attaching the anchor bolt 8 to the embedded anchor 4 after attaching the anchor bolt 8 or the anchor bolt 8 to be described later, the anchor bolt 8 8 serves as a stopper so that the 8 does not come off.

As shown in FIG. 7, an inner plate 13a on one side of a soundproof wall support 13 separately provided is provided in each of a plurality of through holes previously drilled in upper and lower portions of the inner plate 13a. And the nut 10 is brought into contact with the back surface 2a of the side wall 2 and the liner plate 11, and a plurality of small holes each having a diameter smaller than that of the nut 12 are previously drilled at upper and lower portions of the outer plate 13b on the other side of the soundproof wall support 13. Pass each anchor bolt 8 through the hole. Each anchor bolt 8 protruding from the outer surface of these outer plates 13b
Hang the washer 14 and two nuts 15 on the tip of
These are tightened to fix the soundproof wall support 13.

In the above-described embodiment, an example is shown in which the soundproof wall is supported by the side wall. However, the present invention is not limited to this, and an appropriate support can be supported. Further, the anchor bolt screwed to the embedded anchor is not limited to this, and another bolt may be used. Also, the anchor plate provided at the back end of the embedded anchor may have an appropriate shape. Further, any washer can be used.

[0013]

According to the first aspect of the present invention, a buried anchor is previously buried in the side wall, and when the buried anchor is not required, only the head of the bolt projects from the open end exposed on one side surface of the side wall. Since the bolt is screwed or the cap is fitted, the threaded portion of the bolt does not unnecessarily protrude from the side wall, so that it does not hinder other operations around the side wall, and the appearance is good. When a support such as a soundproof wall is to be supported on the side wall, the bolt or cap is removed, one end of an anchor bolt or the like is screwed to each embedded anchor, and the other end is projected outward of the side wall. The support can be supported by the like. Therefore, there is no need to cut the side wall of the reinforced concrete and embed the anchor when it is necessary to support the support, as in the related art. Further, since the inner end of the embedded anchor has an outer diameter smaller than the outer diameter of the portion having the screw hole therein, it is lightweight and easy to handle. In addition, a screw is cut on the outer periphery of the portion having the small outer diameter, a hole in the anchor plate is passed through the hole of the anchor plate on the outer periphery between the two nuts screwed to the outer thread portion, and the anchor plate is sandwiched between the two nuts to form a flange. The anchor plate can be moved with two nuts, and the anchor plate can be attached while avoiding the reinforcing bars in the side wall, which is extremely convenient.

According to the second aspect of the present invention, since a plurality of embedded anchors which are previously embedded in the side wall are provided,
When supporting a support such as a soundproof wall on the side wall, one end of an anchor bolt is screwed and fixed to each embedded anchor, and the support is passed through the other end of the anchor bolt protruding outward from the side wall and fixed. Thus, the support can be easily and firmly supported. In addition, since the embedded anchor has an anchor plate at the back end, it has high tensile strength and the like, and can stably and firmly support the support. Further, since the inner end of the embedded anchor has an outer diameter smaller than the outer diameter of the portion having the screw hole therein, it is lightweight and easy to handle. In addition, a screw is cut on the outer periphery of the portion having the small outer diameter, a hole in the anchor plate is passed through the hole of the anchor plate on the outer periphery between the two nuts screwed to the outer thread portion, and the anchor plate is sandwiched between the two nuts to form a flange. The anchor plate can be moved with two nuts, and the anchor plate can be attached while avoiding the reinforcing bars in the side wall, which is extremely convenient.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a schematic configuration of a side wall according to an embodiment of the present invention.

FIG. 2 is a rear cross-sectional view showing a reinforcing bar arrangement on a side wall according to the embodiment of the present invention.

FIG. 3 is a side view of the embedded anchor according to the embodiment of the present invention.

FIG. 4 is a partial side sectional view showing a state where an anchor bolt is protruded from a side wall according to the embodiment of the present invention.

FIG. 5 is a partial cross-sectional side view showing a state in which an anchor bolt is projected from a side wall according to the embodiment of the present invention and a liner plate is provided on the side wall.

FIG. 6 is a rear view showing a state in which an anchor bolt is projected from a side wall according to the embodiment of the present invention and a liner plate is provided on the side wall.

FIG. 7 is a side view showing a state where a soundproof wall support is attached to a side wall according to the embodiment of the present invention.

FIG. 8 is an enlarged partial cross-sectional side view of the embedded anchor and the anchor bolt according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Road surface body 2 Side wall 3 Reinforcement 4 Embedded anchor 5 Anchor plate 6 Nut 7 Bolt 7 'Cap 8 Anchor bolt 9 Eccentric washer 10 Nut 11 Liner plate 12 Nut 13 Soundproof wall support 14 Washer 15 Nut

Claims (2)

(57) [Claims] An embedded anchor having a screw hole at one end is embedded in a side wall made of reinforced concrete. The embedded anchor has an open end of the screw hole on one side surface of the side wall, and a deep end portion thereof. The outer diameter of this portion is smaller than the outer diameter of the portion having a screw hole, a screw is cut on the outer periphery of this portion, and the hole of the anchor plate is passed through the hole of the anchor plate on the outer periphery between two nuts screwed to this outer thread portion. When the embedded anchor is unnecessary, a bolt having only the bolt head projecting to the outer surface of the side wall from the open end exposed on one side surface of the side wall when the embedded anchor is unnecessary is screwed into the screw hole. An embedded anchor for mounting a support, which is worn or fitted with a cap. 2. An embedded anchor having a screw hole at one end is embedded in a side wall made of reinforced concrete, the embedded anchor having an open end of the screw hole on one side surface of the side wall, and a deep end portion thereof. The outer diameter of this portion is smaller than the outer diameter of the portion having a screw hole, a screw is cut on the outer periphery of this portion, and the hole of the anchor plate is passed through the hole of the anchor plate on the outer periphery between two nuts screwed to this outer thread portion. Was fixed in a flange shape by being sandwiched between two nuts, one end of an anchor bolt or the like was screwed into the screw hole of the embedded anchor, and a support was attached to the other end of the anchor bolt or the like protruding from the side wall. A support mounting structure on a side wall, characterized by: