JPH0561236U - L-shaped concrete retaining wall - Google Patents

Abstract

(57) [Summary] [Purpose] It is intended to enable easy and speedy face-to-face matching work of adjacent retaining wall plate surfaces when installing on concrete foundations and compacted soil. [Structure] A retaining wall plate 10 installed vertically on a concrete foundation 1, a bottom plate 11 projecting obliquely downward with an opening angle of about 105 degrees with respect to this retaining wall plate, and this bottom plate and retaining wall plate 10. In the L-shaped concrete retaining wall with heavy rebar having a central reinforcing rib 12 extending over the inner side of the base horizontal upper surface 1a on the lower side of the root of the bottom slab 11.
The base horizontal surface 13 supported on the bottom plate 11 is formed, the plate width W'of the bottom plate 11 is made slightly narrower than the plate width W of the retaining wall plate 10, and both sides 10b of the retaining wall plate are attached to the left and right sides of the bottom plate root. 10
c is flush with c and the bottom plate base end horizontal surface 13 with respect to the bottom plate extension direction
Proximal jaws 14, 15 protruding to a position near the inner end of the jaw
Is formed, and an inclined surface 16 for inserting a burl is formed on the lower side of the jaws on both sides of the base end.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an installable L-shaped concrete retaining wall used as a retaining retaining wall for land preparation and the like.

[0002]

[Prior Art]

 Conventionally, a retaining wall plate that is installed vertically on a concrete foundation, a bottom slab that projects obliquely downward with an opening angle of approximately 105 degrees to this retaining wall plate, and the inside of this bottom plate and the retaining wall plate. There is known an L-shaped concrete retaining wall with heavy reinforcing bars, which has a central reinforcing rib extending over the portion.

[0003]

[Problems to be solved by the device]

 Since the L-shaped concrete retaining wall with the above-mentioned spread leg angle (approx. 105 ° or close to it) can obtain the sliding resistance force by the bottom plate reaction force utilizing the principle of leverage, 90 It is superior in stability and structure in terms of structural mechanics compared to the L-shaped concrete retaining wall with open legs, but the heavy L-shaped concrete retaining wall (height 2 m, width 1 m weighs about 760 kg). Hanging the existing holding wall with a crane and installing it on the concrete foundation and compacted soil so that the adjacent retaining wall plate surfaces are flush with each other. There is a problem in that it is difficult and time-consuming to perform an adjustment work to move it back and forth or tilt it. Also, there is a problem that it is not possible to connect the retaining wall of the adjacent installation in the lateral direction by bolting the connecting bracket. ..

The present invention has been devised in order to solve the above-mentioned conventional problems, and a first object thereof is to hang a heavy L-shaped concrete retaining wall with a crane to provide a concrete foundation and compacted soil. The purpose of the present invention is to provide an L-shaped ncrete retaining wall that can easily and quickly perform the face-to-face matching work of adjacent retaining wall plates when installed on a roof. The second purpose is to connect adjacent retaining walls. An object of the present invention is to provide an L-shaped concrete retaining wall that can be easily and firmly connected laterally by fastening bolts of metal fittings.

[0005]

[Means for Solving the Problems]

 In order to achieve the first object, the present invention has a retaining wall plate 10 installed vertically on a concrete foundation 1 and an oblique angle of about 105 degrees or close to the retaining wall plate 10 with respect to the retaining wall plate 10. In an L-shaped concrete retaining wall with heavy rebar, which has a bottom slab 11 projecting downward and a central reinforcing rib 12 that is laid across the bottom slab 11 and the inside of the retaining wall plate 10, In the lower part of the root portion located on the retaining wall plate 10 side, a base end horizontal surface 13 that is perpendicular to the retaining wall plate surface 10a supported on the horizontal upper surface portion 1a of the concrete foundation 1 is formed. The plate width W'of is slightly smaller than the plate width W of the retaining wall plate 10 so that it is flush with both sides 10b and 10c of the retaining wall plate on both the left and right sides of the base of the bottom plate, and the bottom plate base horizontal plane in the bottom plate extending direction Base end protruding to a position near the inner end portion 13a of 13 The side jaws 14 and 15 are formed, and an inclined surface 16 for inserting a burl which inclines at an appropriate inward upward inclination angle b with respect to the bottom plate base end horizontal surface 13 is formed below the base end side jaws 14 and 15. It is characterized by being formed.

As means for achieving the second object, the retaining wall plate 10 has vertical ribs 17 and 18 on both sides which are separated from the central reinforcing rib 12, and the vertical ribs 17 and 18 on both sides have a plurality of nuts. The metal fittings 19 are embedded and fixed in a vertically spaced manner so as to be integrated, and the retaining wall connecting metal fittings 20 are fixed to the adjacent nut metal fittings 19 with bolts 21 so that the adjacent retaining wall is laterally mounted. It is configured to be firmly connected to.

[0007]

[Action]

 The L-shaped concrete retaining wall having the above-mentioned configuration is laid and rolled on the concrete foundation 1 and the compacted soil 2 (on the compacted crushed stone 3 with an inclination angle corresponding to the contact angle of the retaining wall bottom plate 11). It is hung by a crane and installed as shown in Fig. 1. In this retaining wall installed condition, the sloped surface 16 for inserting the burl and the horizontal upper surface 1a of the concrete foundation 1 are provided under both side jaws 14 and 15 of the bottom plate root. Since a V-shaped wedge groove determined by is formed, the tip of the burl is inserted into this wedge groove to make the vertical retaining wall plate surface 10a of the adjacent retaining wall flush. It is possible to easily and swiftly perform the adjustment work (moving back and forth or tilting) (face matching work between adjacent retaining wall plate surfaces).

Further, since a plurality of nut fittings 19 are integrally embedded and fixed in the upper and lower spaces at both side vertical ribs 17 and 18 of the retaining wall plate 10, the positions of the adjacent nut fittings 19 are fixed. Further, the retaining wall connecting fitting 20 can be fastened with the bolts 21 to easily and firmly connect the adjacent retaining walls in the lateral direction.

[0009]

【Example】

 An embodiment of the present invention will be specifically described below with reference to the drawings.

The L-shaped concrete retaining wall of this embodiment has a retaining wall plate 10 installed vertically on a concrete foundation 1 and an obliquely downward projection with an opening leg angle a of 105 degrees with respect to this retaining wall plate 10. An L-shaped concrete retaining wall with heavy rebar having a bottom slab 11 supported on the compacted soil 2 and a central reinforcing rib 12 extending over the bottom slab 11 and the inside of the retaining wall plate 10. In addition, a base end horizontal surface 13 perpendicular to the retaining wall plate surface 10a supported by the horizontal upper surface portion 1a of the concrete foundation 1 is provided in the lower portion of the root portion of the bottom plate 11 located on the retaining wall plate 10 side. A bottom horizontal surface 11a similar to the base horizontal surface 13 is formed on the lower side of the front end of the bottom slab 11, and the reinforcing rib 12 is provided with a crane hanging hole 12a.

The plate width W ′ of the bottom slab 11 is set to be slightly smaller than the plate width W of the retaining wall plate 10, and is flush with the retaining wall plate both side surfaces 10 b and 10 c on both right and left sides of the bottom plate root. The base plate both side jaws 14 and 15 are formed so as to project to a position near the inner end portion 13a of the bottom plate base end horizontal surface 13 with respect to the extending direction, and the bottom plate base end portions are formed below the base end side jaws 14 and 15. A sloping surface 16 for inserting a burl is formed which inclines at an appropriate inward tilt angle b (an angle of 15 to 35 degrees) with respect to the horizontal plane 13.

The retaining wall plate 10 has vertical ribs 17 and 18 on both sides which are separated from the central reinforcing rib 12, and a plurality of nut fittings 19 are integrated with the vertical ribs 17 and 18 on both sides with a vertical interval. As described above, the retaining wall connecting metal fitting 20 is fixed to the position of the adjacent nut metal fitting 19 by the bolts 21 so that the adjacent retaining wall can be firmly connected in the lateral direction.

Reference numeral 3 in the figure represents a compacted crushed stone laid at a root cutting portion of the retaining wall installation place with a width slightly wider than the length of the retaining wall bottom plate 11 and firmly compacted using an oscillating compactor. Rolled compacted concrete 3 is cast on crushed stone 3 to make concrete foundation 1, and compacted soil 2 is compacted on the compacted crushed stone 3 with an inclination angle corresponding to the contact angle of retaining wall bottom plate 11 Has been laid.

The GL shown in FIG. 2 is the ground adjacent to the soil retaining land, and 5 is the buried soil that is backfilled inside the retaining wall. The connecting retaining wall installed as shown in FIG. 1 before the backfilling of this buried soil 5 is As shown in FIG. 2, it is installed and fixed by the root-wrapping concrete 6 placed at the front and rear end positions of the bottom slab space.

[0015]

[Effect of the device]

 According to the L-shaped concrete retaining wall of the present invention, when the retaining wall is installed, the sloped surface 16 for inserting the burl below the both side jaws 14 and 15 of the bottom slab and the horizontal upper surface 1a of the concrete foundation 1 are determined. Since a wedge groove with a shape is formed, by inserting the tip of the burr into this wedge groove and digging it, the adjacent retaining walls are moved back and forth so that the vertical retaining wall plate surface 10a is flush. It is possible to easily and swiftly perform the adjustment work for tilting or tilting (the work for aligning the adjacent retaining wall plate surface 10a), and the workability of installing the retaining wall can be improved.

The L-shaped concrete retaining wall according to claim 2, wherein a plurality of nut fittings 19 are integrally embedded and fixed to the vertical ribs 17 and 18 on both sides of the retaining wall plate 10 at upper and lower intervals. Then, the retaining wall connecting metal fittings 20 can be fixed to the adjacent nut metal fittings 19 with the bolts 21 to easily and firmly connect the adjacent retaining walls laterally. It exhibits excellent practical effects in terms of prevention and the like.

[Brief description of drawings]

FIG. 1 is an external perspective view showing two L-shaped concrete retaining walls installed according to an embodiment of the present invention.

FIG. 2 is a side view of FIG. 1 viewed from the left side.

FIG. 3 is an enlarged view of a main part of the concrete retaining wall shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Concrete foundation, 1a ... Horizontal upper surface of concrete foundation, 2 ... Rolled soil, 3 ... Rolled crushed stone, 10 ... Retaining wall board, 1
0a ... Retaining wall plate surface, 10b, 10c ... Retaining wall plate both sides, W ...
Plate width of retaining wall plate, 11 ... Retaining wall bottom plate, a ... Opening angle of retaining wall plate, W '... Plate width of retaining wall plate, 12 ... Central reinforcing rib, 13
... bottom plate base end horizontal surface, 13a ... bottom plate base end horizontal surface inner end,
14, 15 ... jaws on both sides of proximal end, b ... inward tilt angle, 16 ...
Inclined surface for inserting burls, 17, 18 ... Vertical ribs on both sides of retaining wall plate, 19 ... Nut fittings, 20 ... Retaining wall connecting fittings, 21 ...
bolt.

Claims (2)

[Scope of utility model registration request] 1. A retaining wall plate installed vertically on a concrete foundation, a bottom plate projecting obliquely downward with an opening leg angle of about 105 degrees or close to the retaining wall plate, and the bottom plate and the retaining wall plate. A heavy reinforcing bar L-shaped concrete retaining wall having a central reinforcing rib spanning the inner side of the concrete foundation, and a horizontal upper surface of the concrete foundation on the lower side of the root portion located on the retaining wall plate side of the bottom slab. A base horizontal surface that is perpendicular to the surface of the retaining wall supported by the base is formed, and the plate width of the bottom plate is made slightly narrower than the plate width of the retaining wall plate, and both sides of the retaining wall plate are located on the left and right sides of the bottom plate root Form both base end jaws that are flush with the surface and project to the position near the inner end of the bottom end base horizontal surface in the bottom plate extension direction. A sloping surface for inserting a burl that inclines at an appropriate inward tilt angle. L-shaped concrete retaining wall characterized by and. 2. The retaining wall plate has vertical ribs on both sides that are separated from the central reinforcing rib, and a plurality of nut fittings are integrally embedded and fixed to the vertical ribs on both sides with a space vertically provided therebetween. The L-shaped concrete retaining wall according to claim 1, wherein the connecting fitting is configured to be bolted.