JPH07158212A - Preventing device for falling-down of existing wall body - Google Patents

Abstract

PURPOSE:To prevent an existing wall shaking or falling down due to wind pressure by mooring the existing wall body to an anchor block driven in the ground from its back through an anchor rod and an anchor wire for three-point suspending it. CONSTITUTION:A right-angled triangle-shaped attaching arm 11 being convergent backward is perpendicularly attached to the back of the upper end part of the central support 6 of a soundproof wall 4 provided on a roadway subgrade 1. An anchor block 12 having attaching brackets 34, 34 attached to an upper end face 31 is driven into the lower end edge of the rear surface of slope 3 crossing a wall body 8 at right angles. The upper end of an anchor rod 13 is connected to the rear end of the attaching arm 11 through a pivot shaft 36, and the lower end of the anchor rod 13 is unitedly connected to the brackets 34, 34 of the anchor block 12 through a turnbuckle 15. In addition, the attaching arm 11 and anchors 18, 18 driven in at symmetrical positions between supports 6, 6 on both the sides of the attaching arm 11 and moreover both the sides of the support 6' are mutually connected through the pivot shaft 38 of the attaching arm 11 and the turnbuckles 16, 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing collapse of an existing wall body, for example, a soundproof wall installed on both sides of a track such as a bullet train where a train runs at high speed or a highway which is a motorway. The present invention relates to a device for preventing a person from falling due to vibration, vibration, or the like.

[0002]

2. Description of the Related Art Conventionally, soundproof walls have been installed on both sides of a track on which a train runs at high speed, such as the Shinkansen, in order to prevent noise pollution caused by high-speed running. This soundproof wall is installed not only when the roadbed for the track is made of concrete but also on both sides of the track when the roadbed is soil. When the roadbed (1) for the track is made of soil, as shown in FIG. 5, slopes (3) are provided on both sides of the track (2), which slope downward toward the outside, The soundproof wall (4)
It is erected on both sides of the track (2) and facing the upper end of the slope of the slope (3). The soundproof wall (4) comprises a support block (5) made of concrete which is formed along the track (2) at equal intervals, and supports (6) are erected on the upper end surface of the support block (5). The rectangular wall plate (8) is mounted on the front surface of the support column (6) on the orbital side through the horizontal members (7) arranged in a plurality of steps, and the roadbed (1) is attached to the lower end surface of the support block (5). An H-shaped steel support pile (9) is driven inward and protrudes downward.

[0003]

When the roadbed (1) for the track is made of soil, when the Shinkansen train runs at a high speed on the track (2), the wind pressure generated by the running causes the wallboard ( 8) swings inward and outward with the base end of the column (6) as a fulcrum. When the wall plate (8) integrally swings with the support columns (6) due to the running of this train, the roadbed (1) on which the support blocks (5) are formed is soil, and the slope is (3) is an inclined surface, and since the thickness of the soil of the part which receives the lateral pressure acting on the support block (5) in the outward direction is thin, the support block (5) sways in the inward and outward directions, and the support block (5) swings. There was a problem that rattling occurred on itself (5), the roadbed (1) near the support block (5) became loose, and as a result, the soundproof wall (4) fell over.

The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a fall prevention device for an existing wall body which can surely prevent the fall of the existing wall body.

[0005]

In order to achieve the above object, the present invention is a device for preventing collapse of an existing wall body, in which a wall plate is attached to the front surface of a plurality of pillars standing and held on the ground. A mounting arm projecting rearward at the upper rear end of the desired column of the existing wall body, and an anchor block with an anchor formed in the ground at a position that extends linearly behind the mounting arm, An anchor rod that is anchored to the anchor block so that the mounting arm can be supported by pulling and pulling, and a fastening tool is integrally connected, and the ground via an anchor at both symmetrical positions of the mounting arm so that the mounting arm can be pulled and supported. And an anchor wire that is connected to the fastener and is integrally connected to the fastener.

[0006]

With the device according to the present invention, it is possible to support three existing soundproof walls installed on both sides of a track, for example, a soil where a train such as a Shinkansen runs at a high speed, as a roadbed.
When the train runs, wind pressure acts on the wallboard, and when the wallboard tries to swing inward and outward with the base end of the column as a fulcrum, the outward swinging of the wallboard causes the anchor rod to stretch and move outward. Rocking is prevented, and the inward rocking of the wall plate is prevented from being pulled by the anchor wire and the anchor rod to rock the wall plate inward, so that the wall plate is always neutral. Held in position. Moreover, since the anchor wires are symmetrically arranged on both sides of the mounting arm, the mounting arm is evenly pulled from both sides by the anchor wire,
It is possible to prevent the mounting arm from swinging or twisting.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the device according to the present invention will be described below with reference to FIGS. The same parts as those shown in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted.

1 to 4, (11) is a mounting arm, (12) is a concrete anchor block, and (1)
3) is a square pipe-shaped anchor rod, (14) and (14) are anchor wires, and (15), (16) and (16) are first and second
The fasteners, for example, turnbuckles (17), (18) and (18) that can be tightened and loosened in the axial direction are the first and second anchors.

The mounting arm (11) has a mounting bracket (21).
It is attached at a right angle to the back of the upper end of the pillar (6 ') at the center of the soundproof wall (4) via (22), and is projected rearward. As shown in FIGS. 2 and 3, the mounting arm (11) includes an upper end portion of the column (6 ′), a slant member (23), and a straight member (24).
It is formed in the shape of a right-angled triangle that tapers rearward with and, and the tip portions of the sloped material (23) and the straight material (24) are connected by the mounting plates (25) (25), and the mounting plate (25) The lower end edge of (25) is projected downward from the straight material (24), and this protruding piece (26)
Attachment holes (27) and (28) are formed at the front and rear ends of (26), respectively.

The anchor block (12) is formed in the inclined lower end of the slope (3) at a predetermined position on a line which extends straight rearward from the mounting arm (11) orthogonal to the wall plate (8). The upper end surface (31) is formed into a flat surface. A pair of mounting brackets (34) (34) are attached to the upper end surface (31) of the anchor block (12) by a plurality of bolts (32) and nuts (33). Further, the first anchor (17) is driven into the lower part of the anchor block (12), and the lower end of the first anchor (17) expands in a V shape so as to have a large retaining resistance, and the upper end portion thereof. Is embedded in the lower end surface (35) of the anchor block (12).

The anchor rod (13) is for supporting the wall plate (8) by tensioning and pulling the wall plate (8) through the mounting arm (11), and has the upper end portion at the rear mounting hole (28) of the mounting arm (11). ) Via a pivot (36), and the lower end is integrally connected to a pair of mounting brackets (34) (34) on the anchor block (12) via a first turnbuckle (15). By doing so, it is anchored to the anchor block (12).

The second anchors (18), (18) are located at symmetrical positions on both sides of the mounting arm (11) and at the center of the soundproof wall (4) (6 ') and on both sides thereof. (6)
It is driven between (6) and its upper end is exposed to the outside from the slope (3). Above anchor wire (14)
The (14) is capable of pulling and supporting the wall plate (8) through the mounting arm (11), and the upper end of the wall plate (8) is attached to the front mounting hole (27) of the mounting arm (11) by the pivot (38). Is integrally connected and fixed to the second turnbuckle (16) (16) which is connected via the second anchor (18) (18).
Anchored at the top of the. This anchor (18) (1
The shape of the lower end of 8) is similar to that of the first anchor (17).

When the soundproof wall (4) is supported by the device having the above structure, the first and second turnbuckles (15), (16) and (16) are axially tightened or loosened to move the wall plate. (8) can be stretched and supported by the anchor rod (13) via the mounting arm (11), and
The anchor wires (14) and (14) hold it in a neutral position by supporting it at three points so that it can be pulled and supported. By supporting the wall plate (8) at three points in this way, the anchor block (12) moves downward through the anchor rod (13) even if the wall plate (8) receives wind pressure in the outward direction due to running of the train. At the same time, the anchor block (12) is prevented from rattling inward and outward, and at the same time, the wall plate (8) is stretched and supported by the anchor rod (13) via the mounting arm (11), Held in neutral position. Further, when an inward wind pressure is applied to the wall plate (8) by the vortex flow of air generated after passing a train, the wall plate (8) causes the anchor wires (14) (14) and the anchor rods (13). ) And held in the neutral position. In this way, since the wall plate (8) of the soundproof wall (4) is always held in the neutral position by the anchor rod (13) and the anchor wires (14) (14), even if it receives wind pressure generated by traveling of the train. , Swinging around the base end of the column (6) as a fulcrum is prevented. Therefore, the roadbed (1) on the slope (3) in which the support block (5) of the soundproof wall (4) is driven does not loosen, and the soundproof wall (4) can be reliably prevented from falling. Also, since the anchor wires (14) (14) are arranged at symmetrical positions on both sides of the mounting arm (11), the mounting arm (11) is pulled evenly on both sides of the mounting arm (11), and shakes laterally even when subjected to wind pressure. It is possible to prevent twisting.

In the above embodiment, the case where the roadbed is the soundproof wall provided on both sides of the Shinkansen track which is soil has been described, but the present invention is not limited to this, and the roadbed is installed on the soil ground. In addition, when the existing wall body is prevented from falling down due to wind pressure, the present invention can be widely applied to, for example, an expressway which is an exclusive road for automobiles.

[0015]

According to the present invention, since the existing wall body is supported from the back by the anchor rods and the anchor wires at three points on the ground, the existing wall body does not swing inward and outward due to wind pressure. As a result, it is possible to reliably prevent the ground supporting the existing wall body from loosening. Therefore, for example, if the subgrade of the Shinkansen track is soil, if it is used to support the soundproof walls installed on both sides of this track,
Even if wind pressure acts intermittently on the soundproof wall due to high-speed running of the train, the soundproof wall does not shake due to wind pressure and the ground does not loosen,
It is possible to reliably prevent the soundproof wall from falling over, and to ensure safe running of the train. It can also be used to prevent lodging of soundproof walls installed on both sides of a highway, which is a motorway.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the device of the present invention.

FIG. 2 is an enlarged side view of a mounting arm.

FIG. 3 is a rear view of FIG.

FIG. 4 is a perspective view of the device of the present invention.

FIG. 5 is a vertical cross-sectional view showing a standing state of an existing wall body.

[Explanation of symbols]

 1 Roadbed 4 Soundproof wall 6, 6'Post 8 Wallboard 11 Mounting arm 12 Anchor block 13 Anchor rod 14, 14 Anchor wire 15 16 Fastener 17 18, 18 Anchor

Claims (1)

[Claims] 1. A device for preventing a fall of an existing wall body, in which a wall plate is attached to the front surface of a plurality of pillars standing upright on the ground, the rear wall being at the rear upper end of a desired pillar of the existing wall body. Mounting arm protruding toward, an anchor block with an anchor formed in the ground at a position that extends linearly behind the mounting arm, and the mounting arm is anchored to the anchor block so that the mounting arm can be stretched and pulled and supported. , And the anchor rod integrally connected with the fastener, and the anchor is anchored to the ground via anchors at symmetrical positions on both sides of the attachment arm so that the attachment arm can be pulled and supported, and the fastener is integrally connected. An existing wall collapse prevention device consisting of an anchor wire.