JP2928903B2 - Embankment retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embankment for embankment as a reinforcing soil for securing necessary land and suppressing landslides on landslides, for example, in road construction and residential land development on steep slopes. It is.

[0002]

2. Description of the Related Art Conventionally, as a reinforcing soil (earth retaining structure) for securing land required for road construction or residential land development on a steep slope, as shown in FIG. 2 is provided, and a wall 3 of concrete panel is stacked on the concrete foundation 2, and the wall 3
The embankment 4 is applied to the back side of the embankment.
Is arranged. The illustrated example is a case of widening a passage on a steep terrain, where α is the width of an existing road and β is the width of a new road. In the figure, 6 is a cut slope, 7 is a slope before construction, 8
Is surface soil.

In the case of the reinforced soil shown in FIG. 10, the length of the reinforcing material 5 in the embankment 4 is required to be at least about 5.0 m. Therefore, in a steep terrain, it is necessary to cut the mountain side. Then, a new cut slope 6 is formed by this cut, and its protection is required. Further, the existing road width α is further reduced, and in some cases, the passage cannot be used during the construction period. This makes it impossible for a general vehicle to be blocked and a crane truck for performing the installation work of the wall 3 to enter, thereby hindering construction.

Further, since the wall 3 is a discontinuous concrete panel, the stacked wall 3 may fall or protrude due to the sedimentation or deformation of the used embankment with time, and the wall 3 may be used during and after construction. It is difficult to secure the verticality of the wall 3.

[0005] The foundation ground 1 needs a stable ground more than soft rock, so when the foundation ground 1 is deep, a large excavation is required, and the foundation on the slope has a high risk of collapse due to the loaded load.

On the other hand, as shown in FIGS. 11 and 12, the foundation ground 1 is dug into the wall surface structure for reinforcing soil disclosed in Japanese Patent Publication No. Stand at appropriate intervals,
The wall 3 made of a concrete panel has engagement grooves 10 formed at both ends, and these are engaged with front flanges of the pile 9 made of H steel so that the wall 3 is fitted between the piles 9.

[0007] The reinforcing material 5 in the embankment is made of bar steel or strip steel, and has one end connected to an engaging rod 11 fitted between the piles 9 so as to be vertically movable.

[0008] According to the wall structure for reinforced soil disclosed in Japanese Patent Publication No. 4-2733, the wall 3 can be supported by the pile 9,
The length of the reinforcing material 5 in the embankment can be shortened, and the wall 3 which is a concrete panel has continuity, so that it can be prevented from falling down or protruding and verticality can be secured.

[0009]

[Problems to be Solved by the Invention]
In the wall structure for reinforced soil disclosed in Japanese Patent No. 2733, the connection between the wall 3 and the reinforcing material 5 in the embankment is performed via a pile 9, and the pile 9, the wall 3, which is a concrete panel, and the reinforcing material 5 in the embankment Are not integrated.

Furthermore, the pile 9 made of H steel is in the embankment material and is easily corroded.
Support is also adversely affected.

The present invention solves the inconvenience of the prior art, and the wall, the pile supporting the wall and the reinforcing material in the embankment are integrated to effectively transmit the earth pressure and the like to the pile and the reinforcing material in the embankment. An object of the present invention is to provide an embankment embankment wall capable of preventing the pile from being rusted by a steel material, and capable of preventing the concentration of stress by making the reinforcing material in the embankment follow the collapse of the embankment rolling pressure during construction.

[0012]

According to the present invention, in order to achieve the above object, the walls stacked on the ground are fixed by piles erected at predetermined intervals, and are disposed in the embankment on the back side of the wall. In the embankment retaining wall for supporting the wall with a reinforcing material in the embankment, a hole for inserting a pile is formed in the wall, the wall is inserted into the pile, and the mortar is filled in the hole. It is filled and fixed, and a slit is formed by combining notches formed in the connection end face of the wall with each other, and a slit communicating from the gap to the outside is formed. Inserting the end portion, the reinforcing material in the embankment is disposed so as to be movable up and down with respect to the wall through the slit, and filling the mortar in the narrow space, the enormous end of the reinforcing material in the embankment Fixing the part, furthermore, the reinforcing material in the embankment,
A steel material such as a steel rod or a steel strip, or a steel tube is provided sideways on the side opposite to the enlarged end, and a mortar-filled bag provided with the steel material as a core material is inserted through the steel tube, and The gist of the invention is that one end of the laying net is wound around the bag body and joined.

[0013]

According to the first aspect of the present invention, the pile and the wall are integrated via the filling mortar, so that earth pressure and the like can be effectively transmitted to the pile and the reinforcing material in the embankment. It is hard to fall and local deformation, and the verticality is easy to manage.

Further, even if a steel material is used for the pile, it is buried in the filling mortar, so that no rust or the like is generated. At the beginning of construction, it is possible to slide through the slit along the longitudinal direction of the narrow space, and to follow the initial settlement with the highest compaction density by the embankment rolling, so that the rolling can be performed uniformly.

According to the second aspect of the present invention,
After the completion of the rolling to the top end, the inside of the narrow hole is filled with mortar and the expanded end portion of the reinforcing material in the embankment can be fixed.

According to the third aspect of the present invention, in addition to the above-mentioned effects, a reinforcing material in the embankment which is inexpensive and has good followability to the ground can be obtained.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view showing a first embodiment of an embankment retaining wall for embankment of the present invention, and FIG. 2 is a vertical sectional side view of the same, and the same components as those of FIGS. It was done.

In the figure, reference numeral 3 denotes a wall which is a concrete panel. A hole 12 through which a pile 9 made of a steel material such as H-steel is inserted is formed in a central portion in a vertical direction.
When combined with each other, a notch 13 forming a gap 14 was formed.

FIGS. 7 to 9 show an example of the wall body 3. As shown in FIGS. 7 and 8, the hole 12 is formed by closing the side opening surface with the cover plate 15. As shown in FIG. 9 or a combination of a pair of halved panels as shown in FIG.

The piles 9 are formed by digging holes in the foundation ground 1 and piercing the foundations 1 at appropriate intervals. Then, the wall body 3 is stacked on the ground 1 so that the pile 9 is inserted into the hole 12. At this time, the pile 9 is adjusted so as to be located at the center of the hole 12, and the hole 12 is adjusted.
The inside is filled with fixed concrete mortar 17 and fixed.

In this manner, the one-step or predetermined-step wall 3
Are piled up, the embankment 4 is applied to the inside of the wall 3, a gap 14 is formed between the notches 13 formed on the connection end faces of the wall 3, and furthermore, the connection ends of the wall 3 are connected with each other. Since a slit 25 communicating outward from the gap 14 is formed, the enlarged end portion 18 of the reinforcing material 5 in the embankment is inserted into the gap 14 from its upper opening, and the reinforcing material 5 in the embankment is inserted through the slit 25. To the outside, lower it as it is, and place it on the embankment 4.

The pile 9 may be made of a steel pipe or a steel cage in addition to the H steel. The reinforcing material 5 in the embankment may be a reinforcing bar with a supporting plate, a corrugated plate, a steel bar such as a grit reinforcing bar, or a split bar or a net made of a steel material such as a strip steel. A fixing plate body made of a plate or the like is attached to form a huge portion so that the fixing plate body does not fall out of the narrow space 14.

The stacking of the walls 3 and the embankment 4
Of the embankment and the installation of the reinforcing material 5 in the embankment are repeated as appropriate, but at the beginning of the construction, the reinforcing material 5 in the embankment
14 can be slid and the embankment can follow the initial settlement with the highest compaction density by the compaction, so that compaction is performed evenly.

After the rolling is completed to the top end, the narrow space 14 is filled with the filling concrete mortar 17 and the enlarged end portion 18 is fixed.

The pile 9 may be inserted into the concrete foundation 2 on the foundation ground 1 as shown in FIG.

FIGS. 4 to 6 show a second embodiment of the present invention. The reinforcing material 5 in the embankment uses a laying net 24, and its locking member 20 is opposite to the enlarged end portion 18. FIG. It is assumed that a steel pipe 19 is provided sideways on the side.

A steel material such as a reinforcing steel bar or a PC steel wire is disposed as a core material 21 in the steel pipe 19, and a cloth bag 23 filled with a mortar 22 is inserted through the steel tube 19. One end of the laying net 24 was wound and connected between the steel pipes 19.

The reinforcing material 5 in the embankment is laid on the net 24
Is mainly used, the bonding property with the embankment 4 can be ensured in a wide range, and the cloth bag 23 filled with the mortar 22 can be used as a connecting rod-like member as a sandbag. It is possible to follow the initial settlement with the highest compaction density by embankment compaction.

[0029]

As described above, the embankment retaining wall for embankment of the present invention integrates a wall body, a pile supporting the same, and a reinforcing material in the embankment so that the earth pressure and the like can be effectively used as a reinforcing material in the pile and the embankment. In addition to the transmission, the pile can be prevented from rusting due to the steel material, and the concentration of stress can be prevented by making the reinforcing material in the embankment follow the settlement of the embankment rolling pressure during construction.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of an embankment retaining wall according to the present invention.

FIG. 2 is a longitudinal sectional side view showing a first embodiment of an embankment retaining wall according to the present invention.

FIG. 3 is a longitudinal sectional side view showing an application example of the first embodiment of the embankment retaining wall of the present invention.

FIG. 4 is a plan view showing a second embodiment of the embankment retaining wall of the present invention.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view taken along line BB of FIG. 4;

FIG. 7 is a plan view showing a first example of a wall body.

FIG. 8 is a plan view showing a second example of the wall body.

FIG. 9 is a plan view showing a third example of the wall body.

FIG. 10 is a vertical sectional side view showing a conventional example.

FIG. 11 is a cross-sectional plan view showing another conventional example.

FIG. 12 is a vertical sectional side view showing another conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Foundation ground 2 ... Concrete foundation 3 ... Wall 4 ... Embankment 5 ... Reinforcement material in embankment 6 ... Cut slope 7 ... Slope before construction 8 ... Surface soil 9 ... Pile 10 ... Engagement groove 11 ... Engagement Rod 12 ... Hole 13 ... Notch 14 ... Narrow 15 ... Cover plate 16 ... Embedded insert 17 ... Filled concrete mortar 18 ... Extended end 19 ... Steel pipe 20 ... Locking member 21 ... Core material 22 ... Mortar 23 ... Clothing bag 24 ... Laying net 25 ... Slit

──────────────────────────────────────────────────続 き Continuing on the front page (72) Fumi Hirata, Inventor Nippon Construction Co., Ltd. 8-14-14 Ginza, Chuo-ku, Tokyo (72) Tadao Kawahara 1-8-3, Shimbashi, Minato-ku, Tokyo Japan Inside Concrete Industry Co., Ltd. (72) Inventor Masaru Okayama 1-8-3 Shimbashi, Minato-ku, Tokyo Japan Inside Concrete Industry Co., Ltd. (72) Koji Sugiyama 1-8-3 Shimbashi, Minato-ku, Tokyo Japan (56) References JP-A-7-90865 (JP, A) JP-A-4-254614 (JP, A) JP-A-5-295748 (JP, A) JP-A-2-213523 (JP, A) JP 4-49607 (JP, B2) JP 4-9889 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 29/02 303 E02D 17 / 18

Claims (4)

(57) [Claims] 1. An embankment for fixing a wall stacked on the ground with piles erected at predetermined intervals and supporting the wall with a reinforcing material in the embankment disposed in the embankment on the back side of the wall. In the earth retaining wall, a hole is formed in the wall body through which the pile is inserted, the wall body is inserted into the pile, the pile is stacked, and then the filling mortar is filled in the hole and fixed, and the connection end face of the wall body is formed. The cutouts thus formed are combined with each other to form a gap, and a slit communicating with the gap outwardly. A huge end portion of the reinforcing material in the embankment is inserted into the gap, and the reinforcing in the embankment is performed through the slit. An earth retaining wall for embankment, in which a material is disposed vertically movable with respect to a wall body. 2. The embankment retaining wall according to claim 1, wherein the narrowing mortar is filled in the narrow space to fix the enlarged end portion of the reinforcing material in the embankment. 3. The embankment retaining wall according to claim 1, wherein the reinforcing material in the embankment is a steel material such as a steel bar or a steel strip. 4. The reinforcing material in the embankment is provided with a steel pipe provided sideways on the side opposite to the enormous end, and a mortar-filled bag provided with steel as a core material is inserted through the steel pipe, and the bag is inserted between the steel pipes. The earth retaining wall for embankment according to claim 1, wherein one end of the laying net is wound around and joined to the body.