JP7453864B2 - Temporary ground anchor frame and earth retaining structure - Google Patents

Description

The present invention relates to a temporary ground anchor frame and earth retaining structure that minimizes protrusion on the excavation side.

Conventionally, as a fixing frame for a temporary ground anchor, a frame 3 having a shape that is hooked to the upper and lower risers 1 and 2 as shown in FIGS. 3 and 4 has been generally used (see, for example, Patent Document 1). . Therefore, the large protrusion toward the front side of the raised wall may create disadvantageous conditions for the constructor when constructing using heavy machinery or constructing a permanent structure in close proximity to the retaining wall.

Also, according to the calculation, the horizontal force generated on the anchor 4 will be equally distributed on the upper and lower risers 1 and 2, but the vertical force will be borne only by the lower riser 2. Therefore, the upper berth 1 has a design with sufficient stress, which tends to be uneconomical.

Japanese Patent Application Publication No. 2011-241533

For this reason, there was a need to develop a temporary ground anchor mount that minimizes the protrusion toward the front side of the riser and has a mechanism that equally transmits horizontal and vertical forces to the upper and lower risers. .

The present invention has been made in view of the above, and provides a mechanism that minimizes the protrusion of the ribs to the front side and also transmits horizontal and vertical forces equally to the upper and lower ribs. The purpose of the present invention is to provide a temporary ground anchor frame and earth retaining structure.

In order to solve the above-mentioned problems and achieve the purpose, a temporary ground anchor mount according to the present invention is a mount for fixing a temporary ground anchor to the ground, and the temporary ground anchor mount is a mount for fixing a temporary ground anchor to the ground, and is connected to the top side of the front side of the earth retaining wall. There is a belly riser made of H-shaped steel installed on the lower tier side and arranged so that the flange surfaces are located on the front and rear sides, and a belly riser on the upper and lower tiers that is installed on the left and right sides of the front side of the earth retaining wall. In order to fix the rear end of the ground anchor to the front side of the earth retaining wall, it is surrounded by the upper and lower tiers and the left and right side raised joints. It is characterized by comprising a bearing pressure member that is installed in a section where the ground anchor is placed and transmits the horizontal reaction force and vertical reaction force from the ground anchor to the upper and lower risers via the riser joint material.

Further, another temporary ground anchor frame according to the present invention, in the above-described invention, further includes a stiffener installed on the flange surface of the upper and lower uprights, and the upright joint material is fixed to the stiffener with bolts. The bearing members are placed on the front side of the bearing plate, which fixes the rear end of the ground anchor, and on the front side of the bearing plate, and are fixed to the left and right side joints with bolts. It is characterized by being constructed by a bearing plate receiver made of channel steel.

Moreover, the earth retaining structure according to the present invention is characterized by including the above-mentioned temporary ground anchor frame.

According to the temporary ground anchor mount according to the present invention, the mount is for fixing the temporary ground anchor to the ground, and is provided on the upper and lower sides of the front side of the earth retaining wall, and the flange surfaces are on the front side and the lower side. A rib made of H-shaped steel is placed on the rear side, and a rib joint is provided on the left and right sides of the front side of the retaining wall to connect the upper and lower ribs in the vertical direction. In order to fix the rear end of the ground anchor to the front side of the earth retaining wall, it is installed in the area surrounded by the upper and lower uprights and the left and right upright joints, and horizontally from the ground anchor. It is equipped with a bearing material that transmits the reaction force and vertical reaction force to the upper and lower risers through the riser joints, so that the protrusion toward the front side of the risers is minimized, and the upper and lower risers This has the effect that horizontal force and vertical force can be equally transmitted to the tummy tuck.

Further, according to another temporary ground anchor frame according to the present invention, the stiffener is installed on the flange surface of the upper and lower uprights, and the upright joint material has a groove shape fixed to the stiffener with bolts. The bearing material is made of steel and consists of a bearing plate that fixes the rear end of the ground anchor, and a groove that is placed on the front side of the bearing plate and is fixed to the left and right side joints with bolts. Since it is composed of bearing plate supports made of shaped steel, it is possible to minimize the protrusion toward the front side of the uprights, and to equally transmit horizontal and vertical forces to the uprights on the upper and lower levels. This effect is achieved.

In addition, according to the earth retaining structure of the present invention, since the above-mentioned temporary ground anchor frame is provided, the protrusion toward the front side of the upright is minimized, so heavy machinery construction or permanent construction near the earth retaining wall can be carried out. This has the effect that construction of a structure can proceed advantageously.

FIG. 1 is a diagram showing an embodiment of a temporary ground anchor frame according to the present invention, in which (1) is a side sectional view and (2) is a front sectional view. FIG. 2 is a photographic diagram showing an embodiment of the temporary ground anchor mount according to the present invention. FIG. 3 is a photographic diagram showing a conventional temporary ground anchor frame. FIG. 4 is a schematic cross-sectional view showing a conventional temporary ground anchor frame.

EMBODIMENT OF THE INVENTION Below, embodiment of the temporary ground anchor frame and earth retaining structure which concern on this invention is described in detail based on drawing. Note that the present invention is not limited to this embodiment.

As shown in FIGS. 1 and 2, a temporary ground anchor mount 10 according to an embodiment of the present invention is a mount for fixing a ground anchor 14 provided on an earth retaining wall 12 to a ground 16. This frame 10 includes a riser 18, a stiffener plate 20, a riser joint 22, a bearing plate 24, and a bearing plate receiver 26.

The uprights 18 are provided at intervals on the upper and lower sides of the front side of the retaining wall 12, and are made of H-shaped steel arranged so that the surfaces of the flanges 28 are located on the front side and the rear side. .

The stiffener plates 20 are rectangular steel plates, and are arranged on the upper and lower risers 18, respectively. The upper stiffener plate 20 is fixed to a rectangular recess surrounded by a lower flange 28 and web of the upper riser 18. The lower stiffener plate 20 is fixed to a rectangular recess surrounded by an upper flange 28 and web of the lower riser 18.

The raised joint members 22 are channel steel that are provided on the left and right sides of the front side of the retaining wall 12 and connect the upper and lower raised raised parts 18 in the vertical direction. The flanges of the channel steel extend outward in the left-right direction. The webs at the upper and lower ends of the rib joint material 22 are fixed with bolts 30 to stiffener plates 20 fixed to the flanges 28 of the upper and lower ribs 18.

The bearing plate 24 is a thick rectangular steel plate that fixes the rear end of the ground anchor 14 to the front side of the earth retaining wall 12. The bearing pressure plate 24 is provided in a rectangular portion surrounded by the upper and lower ribs 18 and the left and right rib joints 22. The bearing pressure plate 24 and the bearing pressure plate receiver 26 are bearing pressure members that transmit the horizontal reaction force and vertical reaction force from the ground anchor 14 to the upper and lower risers 18 via the riser joints 22. .

The bearing pressure plate receivers 26 are a pair of left and right channel steels that are arranged on the front side of the bearing pressure plate 24 and are fixed to the left and right rib joints 22 with bolts 32, respectively. Specifically, the flanges of the left and right bearing plate receivers 26 extend inward in the left-right direction. The web of the bearing plate receiver 26 and the web of the raised joint material 22 are fixed to each other with bolts 32. A bearing plate 24 is arranged at the rear end of the bearing plate receiver 26 .

The operation and effect of the above configuration will be explained.
The pedestal 10 transmits the load from the ground anchor 14 via stiffener plates 20 installed in the flanges 28 of the upper and lower risers 18. Specifically, the load is transmitted in the order of ground anchor 14 → bearing pressure plate 24 → bearing pressure plate receiver 26 → riser joint material 22 → stiffener plate 20 → upper and lower risers 18.

According to this embodiment, the upper and lower ends of the rib joint 22 are fixed between the flanges 28 of the rib 18 via the stiffener plate 20, so that the protrusion of the rib 18 toward the front side is minimized. can be limited. In addition, since the upper and lower tiers 18 are vertically connected by the left and right erector joints 22, the horizontal force and vertical force of the ground anchor 14 are equally distributed to the upper and lower tiers 18. can be transmitted.

The horizontal force of the ground anchor 14 is equally distributed on the upper and lower risers 18, and the vertical force is also borne by the upper and lower risers 18. Therefore, it is possible to economically design the upper and lower tiers 18.

By minimizing the protrusion toward the excavation side, it is possible to realize a structure that is advantageous for construction of heavy machinery or permanent structures in close proximity to the earth retaining wall 12. By using general-purpose members such as channel steel and rectangular steel plates as the main components, it can be reused at many construction sites.

Moreover, the earth retaining structure 100 according to the present embodiment includes the above-described temporary ground anchor frame 10 and ground anchor 14. As described above, since the pedestal 10 minimizes the protrusion of the riser 18 toward the front side, it is possible to advantageously carry out heavy machinery construction or construct a main structure in close proximity to the earth retaining wall 12.

As explained above, the temporary ground anchor mount according to the present invention is a mount for fixing the temporary ground anchor to the earth, and is provided on the upper and lower sides of the front side of the earth retaining wall, There are raised ribs made of H-shaped steel arranged so that the flange surfaces are located on the front and rear sides, and raised ribs on the upper and lower levels that are installed on the left and right sides of the front side of the earth retaining wall. In order to fix the rear end of the ground anchor to the front side of the earth retaining wall, it is installed in the area surrounded by the upper and lower tiers and the left and right tiers. , and a bearing member that transmits the horizontal reaction force and vertical reaction force from the ground anchor to the upper and lower risers via the riser joints, minimizing the protrusion toward the front side of the riser. In addition, horizontal and vertical forces can be equally transmitted to the upper and lower tiers.

Further, according to another temporary ground anchor frame according to the present invention, the stiffener is installed on the flange surface of the upper and lower uprights, and the upright joint material has a groove shape fixed to the stiffener with bolts. The bearing material is made of steel and consists of a bearing plate that fixes the rear end of the ground anchor, and a groove that is placed on the front side of the bearing plate and is fixed to the left and right side joints with bolts. Since it is composed of bearing plate supports made of shaped steel, it is possible to minimize the protrusion toward the front side of the uprights, and to equally transmit horizontal and vertical forces to the uprights on the upper and lower levels. .

Further, according to the earth retaining structure according to the present invention, since it is provided with the above-mentioned temporary ground anchor frame, the protrusion toward the front side of the upright is minimized, so heavy machinery construction or permanent construction near the earth retaining wall can be carried out. Construction of structures can proceed advantageously.

As described above, the temporary ground anchor frame and earth retaining structure according to the present invention are useful for earth retaining walls, and are particularly useful for raising upper and lower tiers by minimizing the protrusion toward the front side of the raised side. Suitable for transmitting horizontal and vertical forces equally.

10 Temporary ground anchor frame 12 Earth retaining wall 14 Ground anchor 16 Earth 18 Raise 20 Stiffener plate 22 Raise joint material 24 Bearing plate (bearing pressure material)
26 Bearing pressure plate receiver (bearing pressure material)
28 flange 30, 32 bolt

Claims (2)

A frame for fixing a temporary ground anchor to the ground,
Uprights made of H-shaped steel installed on the upper and lower sides of the front side of the earth retaining wall and arranged so that the flange surfaces are located on the front side and the rear side;
Recessed joints are provided on the left and right sides of the front side of the earth retaining wall and connect the upper and lower stages of recessed walls in the vertical direction;
In order to fix the rear end of the ground anchor to the front side of the earth retaining wall, it is installed in the area surrounded by the upper and lower uprights and the left and right upright joints, and is designed to prevent horizontal reaction forces from the ground anchor and a bearing member that transmits the vertical reaction force to the upper and lower uprights via the upright joints ;
Equipped with stiffeners installed on the flange surfaces of the upper and lower tiers,
The upright joint material is made of channel steel fixed to the stiffener with bolts, and the bearing material is a bearing plate that fixes the rear end of the temporary ground anchor, and is placed on the front side of the bearing plate. Additionally, a temporary ground anchor frame comprising support plate supports made of channel steel that are fixed to the right and left side joints with bolts, respectively . An earth retaining structure comprising the temporary ground anchor frame according to claim 1 .

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