JPS5816408B2 - Prefabricated box type retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a prefabricated box-type retaining wall,
Two columns of equal length made of other section steel such as section steel and channel steel fittings,
A plurality of screw bars having a length corresponding to the distance between the two pillars, that is, the width of the retaining wall, and a plurality of screw bars having a length corresponding to the length of one structural unit of the retaining wall. The structural units of the box-shaped retaining wall to be formed are assembled at the construction site, and the structural units are connected to correspond to the required retaining wall length and stacked to the required retaining wall height, and the inside of each structural unit is It is characterized by depositing stone blocks, earth and sand, etc. on a retaining wall, and eliminates the need to transport the heavy equipment necessary for constructing a retaining wall to the construction site, as in the case of conventional concrete retaining walls. The purpose of this project is to standardize the components of the construction site and enable prefabricated construction, thereby simplifying and speeding up on-site assembly and installation work.

Hereinafter, the function of the structure of the prefabricated box-type retaining wall of the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a prefabricated box-type retaining wall of the present invention, FIG. 2A is a plan view of section A in FIG.
The planned opening is a plan view of the corresponding part on the opposite side of part A, FIG. 3 is a perspective view of part B in FIG. FIG. 5 is a schematic front view of an embodiment of the invention for compliant installation; FIG. It is.

In the drawing, 1', tl'1.1□, 1'2,...
are the pillars that form the structural unit of a retaining wall, each set of two, and 1
1゜1□... and 1'lj information... are arranged on the front side and back side ζ of the retaining wall, respectively.

Similarly, 1]111'. 11211'+2,...
. . . are pillars forming the next structural unit superimposed on the above structural unit.

(In the case of the illustrated embodiment, the columns 11, 12, . . . are formed of H-beam steel.

)2 is the pillar 11, 1□...and 1'1, 1'2
A tie bar that connects ...... in the length direction of the retaining wall.
The length Ll of one structural unit of the retaining wall corresponds to the length Ll.

3 is a set of two pillars 11y forming one structural unit of the retaining wall.
It is a screw bar that connects 1'1, 12, 1'2, etc. in the width direction, and has a length corresponding to the width W of one structural unit of the retaining wall.

4 (Figure 3) is a weir plate for preventing the outflow of soil accumulated inside the structural unit, and has an area (LXH) approximately corresponding to the length L and height H of one structural unit of the retaining wall. , abuts on the threaded bar 2 from the inside of each structural unit, and is bound and fixed to the threaded bar 2 by a binding wire 5.

6 is a base plate, and supports 11+1'l, 12, 1'2, . . . of each constituent unit that constitute the lowest stage of the retaining wall.
The purpose of this is to reduce the surface pressure on the foundation ground at the bottom end of each column and to attach it to the foundation ground using foundation bolts.

As explained above, a set of two pieces of equal length (approximately corresponds to height H)
Support posts 11゜1'1.1□, 1'2. ,...)
, - a plurality of threaded bars 2 having a length corresponding to the length L of the structural unit; and - a box-shaped configuration formed by a plurality of threaded bars 3 having a length corresponding to the width W of the structural unit. In the longitudinal direction of the retaining wall, as shown in FIG. 2, the units are sequentially connected to the pillars of the next constituent unit via threaded bars 2 to form a predetermined length; The final open end in the width direction is closed by connecting the columns 1n and 1'n with a plurality of screw bars 3 having a length corresponding to the width W of the structural unit, and then closed in the height direction of the retaining wall. On the other hand, as shown in Figure 2, the lowest or next threaded bar (
2 or 3) on the lower component unit or on the next threaded bar (3 or 2) in a crosswise manner to form a predetermined height, a predetermined support can be achieved as shown in Fig. 1. Assemble and form the wall shell.

In the above shell assembly, when stacking the structural units in the height direction, for the parts of the nine corners at both ends of the retaining wall where the screw bars do not intersect, for example, as shown in Figure 2, Intersection with the threaded bar 3 can then be achieved by cantilevering the distal end of the threaded bar 2 to a suitable length from the post 1'2 (as indicated by the dotted line 2').

A retaining wall having a predetermined length and height is completed by depositing stone blocks, earth and sand (residue), etc. inside each component of the outer shell of the retaining wall formed by assembling and connecting the component units in this way. .

An embodiment of the prefabricated box-type retaining wall of the present invention installed on flat ground has been described above. For example, the standard height H formed by a pair of supports
As shown in the schematic front view of FIG. 4, by preparing the structural unit of height H' in advance, the earth and sand of the irregularly shaped ground shown in the cross-hatched area is removed and the above-mentioned structure is applied to that area. H
'It is possible to construct a part of the lowermost stage of the retaining wall by allocating the unit of height and lay it to a predetermined length in accordance with the shape of the irregular ground.

This point makes it possible to reduce the amount of earth and sand that must be removed for land leveling to the minimum limit by laying a retaining wall that adapts to the shape of irregular ground, streamlining the work of laying retaining walls. This will make a major contribution.

Further, the retaining wall of the present invention, as shown in the schematic side view of FIG.
By preparing in advance several types of structural units having widths different from the standard width W, such as w', vJ', etc., a stepped portion as shown in Figure 5 is formed to adapt to the topography on the back side of the retaining wall. A retaining wall can be formed.

The prefabricated box-type retaining wall of the present invention having the structure and function described above has extremely few types of component parts for forming the component units, so it is possible to standardize the component parts and facilitate factory production. Assembly tools are also simplified, making prefabricated construction easier.
In addition, because the structure is designed to connect the structural units and assemble and form the outer shell, it is possible to lay the ground according to the ground and topographical conditions, and therefore to perform efficient land leveling work, which is different from the conventional method described at the beginning. The intended purpose is to simplify and speed up the assembly and installation work at the construction site by omitting the transportation of heavy equipment necessary for constructing a retaining wall to the construction site, as in the case of concrete retaining walls. It is to be fully achieved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a prefabricated box-type retaining wall of the present invention, FIG. 2A is a plan view of section A in FIG.
Figure 3 is a plan view of the corresponding part on the opposite side (back side) of part A, Figure 3 is a perspective view of part B in Figure 1 as seen from the arrow, and Figure 4 shows the present invention on irregular terrain with differences in elevation. FIG. 5 is a schematic front view showing an embodiment of the present invention when a width adjustment component is used to form a step in a retaining wall; FIG. It is a diagram. Below is a brief description of the drawings, 13.1'1 (I n , l'
n): Strut, 2: Threaded bar for connecting the struts of the retaining wall structural unit in the longitudinal direction, 3: Threaded bar for connecting the struts of the retaining wall structural unit in the width direction, 4: Weir plate, 5: Binding wire, 6: base plate.

Claims (1)

[Claims] A pair of columns 1, 1' of a predetermined length made of another section steel of IHH section steel channel steel, and a plurality of threaded bars 3 in the width direction of the retaining wall connecting the pair of columns. , consisting of a box-shaped structural unit comprising a plurality of threaded bars 2 in the longitudinal direction of the retaining wall that connect the respective corresponding columns of the column pair and adjacent column pairs,
While connecting the retaining wall in the longitudinal direction with the screw bar 2,
In the height direction, the outer shell of a predetermined retaining wall is formed by placing and connecting the lowest or next threaded bar of the upper structural unit to the highest or next threaded bar of the lower structural unit in a crosswise manner. A prefabricated box-type retaining wall characterized by assembling a retaining wall and depositing stone blocks, earth, etc. inside it. 2. The prefab according to claim 1, comprising a height-adjusting structural unit using a pair of short columns 1, 1' to form a part of the lowermost stage of the retaining wall. Type box type retaining wall. 3. To adjust the width of the retaining wall, a retaining wall with stepped portions can be created by providing multiple types of structural units made by connecting a pair of supports 1, 1' with threaded bars 3 of different lengths from those for the standard width. The prefabricated box-type retaining wall according to claim 1, which forms a wall. 4. The prefabricated box-type retaining wall according to claim 1, characterized in that a base plate 6 is fixed to the lower end of the support of each structural unit constituting the lowermost part.