JPH0324527B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a prefabricated member that can be used for various constructions such as earth retaining work and culverts.

Conventionally, in earth retaining wall structures used in earth retaining works, etc., appropriate legs are provided at the lower end of the back side of the earth retaining wall (the part that is covered and buried in the soil), and the entire leg and back side are There was a construction method in which earth retention was done by burying it in the ground. In the conventional existing earth retaining wall structure described above, each component thereof, that is,
In any case, the earth retaining wall and its appropriate legs were integrally formed mainly of reinforced concrete.

Here, in the case of the earth retaining wall structure in which the earth retaining wall and the leg are integrally formed, especially the structure in which the foot is an inclined leg, there is a large amount of space on the back side sandwiched between the earth retaining wall and the leg. When transporting the parts themselves to the construction site, only a few parts can be loaded onto the loading platform of a transport vehicle, and the current situation is that they are transported back and forth while leaving a large amount of dead space on the loading platform. It was hot. Therefore, under these circumstances, the construction itself will be delayed, and a large amount of transportation costs will be required, resulting in defects that will increase the total cost of earth retaining construction. Ta.

Furthermore, in the conventional earth retaining wall structure, the earth retaining wall and appropriate leg parts such as inclined legs for supporting and reinforcing the vertical state of the earth retaining wall in the buried soil are integrally formed. Coupled with transportation problems, the current situation is that the width unit of the earth retaining wall has to be kept short due to its function in supporting and reinforcing the legs. Therefore, it takes a lot of time and effort to install short earth retaining walls in width units, and this also has the drawback of increasing the total cost of the construction itself. Ta.

Furthermore, in the conventional earth retaining wall structure, the back surface of the earth retaining wall is simply provided with appropriate legs as described above, so for example, a U-shaped groove or the like is formed in contact with the upper end of the back surface. When constructing such a structure, it is necessary to use a separate construction method to connect the appropriate U-shaped groove body to the upper end of the back surface of the earth retaining wall, and this also leads to the inconvenience of high construction costs. It was hot.

However, the various deficiencies of the conventional earth retaining wall structure mentioned above are completely contrary to the current and future cost-saving trend of how to reduce the total cost of the construction work itself. The current situation is that it is not in line with the reduction of construction costs.

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to eliminate the defects and inconveniences of the conventional earth retaining wall structure while maintaining sufficient strength as an earth retaining wall structure. The object of the present invention is to provide an assembly-type member that can greatly reduce the total cost of earth retaining work, etc.

Hereinafter, one embodiment of the present invention will be described with reference to the attached drawings.

In this invention, the earth retaining wall main body 1 and the leg parts 15 that are joined and fitted to the retaining wall main body 1 are assembled, and each body and part are individually formed from reinforced concrete. The earth retaining wall main body 1 has a substrate part 3 having an appropriate thickness, perpendicular to the screen-like wall part 2, and having an appropriate width protruding from the lower end thereof along the back part A of the wall part 2. A protruding body part 4 of an appropriate shape (for example, scalene quadrilateral) having a lower surface part E parallel to the upper surface part C of the substrate part 3 is provided at an appropriate position of part A, and the protruding body part 4 The fitting recess 5 of the leg part 15 is formed with the lower surface part E of the part, and the receiving shelf part 7 of the U-shaped groove part 6 is formed at the upper end part of the protrusion part 4, for example. . Appropriate small grooves 8 are provided in the lower surface D of the substrate part 3 and the surface part B of the wall surface 2, located on each surface of the fitting recess 5, and holes for the bolts 9 to pass through are provided in the small grooves. 1
0 is set. The leg portion 15 that is joined and fitted into the fitting recess 5 of the retaining body 1 is connected to an engaging portion 16 having engaging surfaces a, b, and c that adhere to each inner surface of the fitting recess 5. It consists of a script body 17 that is inclined downward at an appropriate angle, and at the end of the engagement surface C at the lower end of the engagement face C in the script body 17 direction, there is a corner F between the upper surface C of the base plate 3 and the side surface thereof. A fitting corner portion 18 is formed to be joined to. And the above-mentioned engaging part 1
A female threaded rod 19 which is screwed into the bolt 9 is mounted on the engaging surfaces a and c of the earth retaining wall at a position facing the insertion hole 10 for the bolt 9 in the earth retaining wall main body.

In the present invention having such a configuration, when each of the wall sections 2 is provided in series on both sides of the upper end of the earth retaining wall main body 1, appropriate thin steel plates 20 are fitted to prevent the wall sections from swaying. Thin slot holes 21 may be provided, and reinforcing bars 22 may be provided on the side surfaces of each main body 17 and the base plate 3 for continuous reinforcement of the earth retaining wall body 1.
A hole 23 for arrangement may be provided.

Furthermore, the number of fitting recesses 5 in the earth retaining wall body 1 to which the leg portions 15 and the leg portions 15 are connected and fitted is set within a range that can support and reinforce the wall portion, depending on the length and shortness of the width unit of the wall portion 2. Furthermore, the length and shortness of the leg script body 17 are determined based on the softness and softness of the ground on which the member according to the present invention is constructed.
This is determined depending on the hardness, etc. In addition, in the present invention, in the above embodiment, the retaining wall main body 1 and the leg portion 15 are assembled and connected using a fastening means using bolts 9, but the assembly and connection are not limited to this means. For example, a suitable adhesive may be used as a bonding means. On the other hand, although the member according to the present invention is described in this embodiment as being used for an earth retaining structure, when the earth retaining wall main body 1 and the leg part 15 are assembled, the earth retaining wall main body and the leg part For example, the script body 17 is shaped so that it is approximately L-shaped.
The L-shaped earth retaining wall main body and the leg portion may be arranged in a concave manner, and the sandwiching space may be used as a waterway to be used as a member for constructing a culvert or the like.

As explained above, the present invention provides an earth retaining wall main body 1
The legs 15 are inserted into the fitting recess 5 provided on the back surface A of the
After fitting the engaging portion 16 with its engaging surfaces a, b, and c joining to each inner surface of the fitting recess, the substrate portion 3 is fitted.
The bolts 9 are inserted through the insertion holes 10 in the lower surface D and the surface B of the wall surface 2, and the bolts are inserted into the engaging portion 1.
Screwed into each female threaded rod 19 of the engagement surfaces a and c of 6,
The earth retaining wall main body 1 and leg portions 15 are assembled together. Then, the leg portions 15 assembled to the retaining wall body 1 have their engaging surfaces a, b, and c tightly fitted to the inner surfaces of the fitting recesses, and the fitting corner portions 18 are fitted to the corner portions F of the base plate portion 3. In the state of fitting, during construction, the back surface part A of the earth retaining wall main body and the leg part 15 are placed on the lower end of the lower surface part D of the base plate part 3, etc., so that the soil 24 is This means that it will be covered and buried.

Therefore, the present invention not only maintains sufficient strength as the legs to support and reinforce the vertical state of the earth retaining wall main body in earth retaining structures, etc., but also has sufficient strength when transporting the earth retaining structures to the construction site. By being able to transport the retaining wall main body 1 and the leg parts 15 while being separated, it is possible to transport a large number of bodies and parts at once by stacking them in many layers, compared to the conventional situation. As a result, transportation costs can be drastically reduced, and as a result, the total cost of construction can be significantly reduced. Further, in the present invention, as described above, the fitting recess 5 of the earth retaining wall main body 1 to which the leg portion 15 and the leg portion 15 are jointly fitted is provided.
Since it is possible to install multiple units within the range that can be supported and reinforced by the wall section 2, the width unit of the wall section can be made extremely long compared to the conventional case. The work of installing the main bodies in series becomes faster, and from this point of view, the total cost of the work itself can be further reduced. Furthermore, the present invention has a receiving shelf section 7 provided at the upper end of the protrusion section 4 of the earth retaining wall main body 1, so that, for example, the U-shaped groove section 6 can be installed in this section, and the U-shaped groove section 6 can be installed in the above section. Since there is no need to employ any separate construction method for providing the groove body portion, construction costs can be reduced from this aspect as well.

As described above, the prefabricated member according to the present invention is extremely significant in that it can significantly reduce the total cost of earth retaining construction work while maintaining sufficient strength as an earth retaining wall structure.

[Brief explanation of drawings]

Fig. 1 is a partially cut-away side view of the assembled member of the present invention, Fig. 2 is a side view of the same separated state, and Fig. 3 is a partially cut-away front view of the member of the present invention. FIG. 4 is a plan view of the same. Main symbols in the diagram: 1...Earth retaining wall body, 2...Wall surface part, 3...Base part, 4...Protruding body part, 5...Recess for fitting leg part, 7...U-shaped groove body 8. Receiving shelf section, 8
...Small groove part, 9... Bolt, 10... Bolt insertion hole, 15... Leg part, 16... Leg engaging part,
DESCRIPTION OF SYMBOLS 17... Screenplay body, 18... Fitting corner part of the leg part to be joined to the corner of the board part, 19... Female threaded rod of the leg part, 20... Thin steel plate, 21... Thin slot hole, 22...
...Reinforcing bars, 23... Holes for installing reinforcing bars.

Claims (1)

[Claims] 1. A screen-like wall portion 2 having an appropriate thickness and width;
A substrate portion 3 having an appropriate width and corner portion F and protruding perpendicularly to the wall portion 2 at the lowermost end thereof toward the back surface portion A of the wall surface portion 2, and a lower surface parallel to the upper surface portion C of the substrate portion 3; A protruding body portion 4 having an appropriately shaped portion E, and the substrate portion 3
The earth retaining wall main body 1, which consists of a fitting recess 5 formed by an upper surface C and a lower surface E of the protruding body part 4, is integrally formed with reinforced concrete, and is connected and fitted into each inner surface of the fitting recess 5. an engaging part 16 having engaging surfaces a, b, and c that attach to the engaging part 16; a script body 17 that slopes at an appropriate angle along the lower part of the engaging part 16; and one end of the lower end engaging surface c of the engaging part 16. A leg part 15 consisting of a fitting corner part 18 formed by the main body 17 continuous to the one end part is integrally formed with reinforced concrete, and the leg part 15 is integrally formed with reinforced concrete in the fitting recess 5 of the earth retaining wall main body 1. The engaging portion 16 of the portion 15 is connected to its respective engaging surfaces a, b, c.
are fitted into each inner surface of the fitting recess 5, and the fitting corner portions 18 of the leg portions 15 are tightly fitted into the corner portions F of the base plate portion 3, so that the earth retaining wall body 1 and An assembly type member used for various constructions such as earth retaining work, in which the earth retaining wall main body 1 and the leg parts 15 are assembled and fixed by appropriate fixing means such as bolt screwing means or adhesive means. . 2. The width of the wall portion 2 is increased, and fitting recesses 5 are provided at both ends of the back surface A of the wall portion 2, and each leg portion 15 is assembled and fixed in each of the fitting recesses 5. Prefabricated members used for various constructions such as the earth retaining work described above. 3. A small groove 8 and a hole 10 for inserting the bolt 9 are formed in the lower surface D of the base plate 3 and the surface B of the wall 2 at each side of the fitting recess 5, and An assembly type member for use in various constructions such as earth retaining work as set forth in claim 1 or 2, wherein a female threaded rod 19 facing the bolt insertion hole 10 is mounted on the engaging surfaces a and c. 4. Any one of claims 1 to 3, in which a receiving shelf part 7 is formed on the back surface part A of the wall part 2 and the upper end part of the protruding body part 4, in which a U-shaped groove body part 6, etc. can be arranged. Prefabricated members used for various constructions such as earth retaining work described in . 5 Appropriate thin steel plates 20 are placed on both sides of the upper end of the wall section 2.
A prefabricated member for use in various constructions such as earth retaining work according to any one of claims 1 to 4, which is provided with a thin slotted hole 21 into which the material is fitted. 6. Earth retaining work according to any one of claims 1 to 5, wherein holes 23 for installing reinforcing bars 22 are provided in the script body 17 of the leg part 15 and the side surface of the base plate part 3 of the earth retaining wall body 1. Assembled parts used for various constructions.