JPH0647811B2 - Self-supporting basket-shaped construct - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a self-supporting cage structure, particularly a self-supporting cage structure useful as a snake cage or a fish reef.

[Prior Art and its Problems] Generally, as a structure, a material that is prepared and transported to the site requires only a small weight and capacity, and construction work on site is as quick and easy as possible. This is not only because it is an era where labor saving is desired, but also because there are many cases where an emergency is required for construction such as disaster prevention and recovery.

In this respect, basket-shaped structures are particularly advantageous when using locally-occurring filling materials, in which old wire snake baskets are newly assembled using reinforced concrete or steel columns and beams. It is well known that there is a framer that is filled with earth and sand.

However, the iron wire snake basket is not self-sustaining, requires labor to construct it, is difficult to save labor, and is insufficient in strength and durability. Although the known frame work is satisfactory in terms of reinforcement and durability, the weight of the frame material such as columns and beams is large, and the work of assembling the frames and connecting bolts and nuts to connect the frames together. It is not satisfactory in terms of labor saving. further,
The structure of the entire framework is too rigid and lacks deformability, and if there is uneven settlement of the foundation, the stability of the entire structure will be lost. Some of them have been devised so that the framework has some deformability, but none of them has been improved in that the weight of the frame material is large and the assembly requires complicated labor.

On the other hand, the present inventor has noticed that the expanded metal plate is lightweight and has an appropriate deformability, and the use of the expanded metal plate makes it possible to significantly reduce the material weight and to provide the structure with an appropriate deformability. Suggested some retaining walls.

One of them uses a roof-shaped structural unit (= R unit) made by bending an expanded metal plate. The units are stacked in layers so that the roof shapes are juxtaposed and the sword-shaped teeth on both sides of the upper unit mesh with the mesh of the lower R unit (Japanese Patent Publication No. 54-2961).

The other is to bend the expanded metal plate into a bow shape,
An arcuate tension unit (= BT unit) in the form of a tight string is formed by engaging both ends of the rod-shaped portion with the mesh of both ends. This BT unit is connected in stages and piled up in stages (Jitsuko Sho 57-16).
916).

The other is to use a Fence type J-shaped unit (= FJ unit), which is an expanded metal plate processed into a Fence type and a J type structure. The FJ unit is piled up in stages while being connected by engaging the sword teeth and the mesh and combining the rod-shaped piece and the mesh (Japanese Patent Publication No. 57-13692).

While these technologies make full use of the above advantages of the expanded metal plate itself, a self-sustaining structure is provided.
This enables quick and low-cost construction without complicated on-site work such as bolt nut welding at the expanded metal joint.

The present inventor has also proposed some sabo dams that make extensive use of expanded metal plates.

One of them is a sabo dam having a structure in which the upstream side and the downstream side are covered with expanded metal plates of a plurality of stages, and the upstream side and the downstream side are connected by a bar member between the stages. The connection between the steps is performed by applying the joint part of the expanded metal plate to the inside of the horizontal wing of the beam member having a T-shaped cross section and connecting the U-shaped or V-shaped end of the bar member to both the beam member and the expanded metal plate. The beam member, the expanded metal plate and the bar member are engaged with each other and engaged (Japanese Patent Publication No. 61-22).
085).

On the other hand, expanded metal plates with groove-shaped bent joints at their edges are combined so that the groove portions overlap, and the beam member is housed in the overlapped groove portions. There is a similar erosion control dam in which the upstream and downstream connecting rod members are engaged with the members to perform interstage bonding (Japanese Patent Publication No. 59-20823).

These erosion control dams are epoch-making in that each expanded metal plate on the upstream surface and the downstream surface is connected by a rod member to form one frame, and the safety against ground subsidence is high,
The material weight is small and the workability is good, so it is really useful.

However, these techniques are mainly aimed at constructing multi-stage retaining walls or erosion control dams, and are difficult to apply to basket-shaped structures such as snake cages whose subject is horizontal extension. .

[Means for Solving the Problems According to the Present Invention] Therefore, the present inventor uses an expanded metal plate to quickly and inexpensively construct a self-supporting basket-shaped structure suitable for applications whose subject is horizontal extension. This was completed as a result of earnest research on the technique to do.

The construct of the present invention is composed of a grid of bars and an expanded metal plate. In an exemplary embodiment, the contour of the grid is matched to the profile of the construct to provide a partition wall within the construct. The ends of the bar are bent to engage the mesh of the expanded metal plate. An expanded metal plate is arranged as a surface wall around the partition wall and is joined to the lattice to form a self-supporting cage structure as a whole.

[Operation of the present invention] With the above-mentioned constitution of the present invention, a self-supporting cage structure is obtained. Since the material is a bar lattice and an expanded metal plate, the weight volume is small. It is possible to arbitrarily design the extension in the horizontal direction by repeating the joining of the lattice and the expanded metal plate. The construct as a whole is self-sustaining. It also has appropriate deformability, strength and durability. The construction does not require complicated on-site treatment such as bolt nut tightening, and can be easily performed by engaging the bent end of the rod and the mesh of the expanded metal plate.

[Preferred Embodiment] When the bent end portion of the rod and the mesh of the expanded metal plate are engaged with each other, the bent end portion is passed through the mesh, and is joined by another rod member. Strength increases.

The bar grid can be formed by assembling a bent bar having a predetermined length into a grid by welding or other means. Of course, it may be formed by assembling it in a lattice shape and then bending the ends.

As the expanded metal plate, it is advantageous to use one selected from commercial standard products. Although it is possible to join by placing an arbitrary number of grids at arbitrary positions at a distance in the horizontal direction of the expanded metal plate, at the connecting part of the horizontally adjacent expanded metal plates, the connecting end parts are It is advantageous to stack and join to the lattice, because the basket-like joining and the extension joining can be performed at the same time and the strength is increased. In addition, the number of extension joints per grid can be adjusted by shifting the connection position of the expanded metal plate between the surfaces of the construct.

Before the expanded metal plate on the top surface is joined to the lattice, sand can be easily filled inside the cage. In this case, the snake basket is constructed by finally joining the expanded metal plate on the top surface.

Further, the construct of the present invention can be used as a fish reef by placing it in water without filling or only partially filling.

The expanded metal plate on the top surface can be omitted in some cases. In the case of a basket-shaped structure having a multi-tiered structure in the vertical direction, the expanded metal plates serving as the lower end of the lower tier and the bottom of the upper tier, which are sandwiched between the tiers, may be used as a single sheet, or these may be combined with other grids or mesh members such as rods. It can be replaced with one similar to a grid. The same applies to the case of a basket-shaped structure having multiple stages in the depth direction. In the case of a leaning wall construction, the back expanded metal plate can be replaced by another grid or mesh member.

Further, the lateral end faces in the left-right direction may be formed of a bar lattice, an expanded metal plate bent in a U-shaped cross section, or another lattice or a mesh member. Alternatively, it may be fixed to another fixed member.

[Examples] Hereinafter, the present invention will be described in detail with reference to the examples illustrated in the accompanying drawings.

FIG. 1 is a perspective view showing an example of a bar lattice. Welded rebar grid, grid spacing 375 mm, rebar diameter 16 mm, length 2
A unit having a length of 2100 mm and a width of 1573 mm (= S unit) is manufactured by making a 425 mm and a width of 1900 mm and bending the end portion as shown in the drawing. Figure 2 is its front view,
FIG. 3 is a plan view thereof.

Cut off a commercially available expanded metal plate (distance between centers in the short direction of mesh x distance between centers in the long direction of mesh x plate thickness x step width = 75 mm x 150 mm x 8 mm x 9 mm), length 2050 mm x A unit having a width of 1650 mm (= F unit) and a unit having a length of 1500 mm and a width of 1650 mm (= T unit) are prepared.

Separately, a steel rod having a diameter of 16 mm is used to make a vertical connecting rod having a length of 2000 mm and a horizontal connecting rod having a length of 1500 mm.

An example of the procedure for constructing a snake basket using these units and connecting rods is shown below.

(A) The required number of T-units are laid one on the other in the mesh length direction end of the adjacent T-units to form a bottom wall.

(B) Set the S unit on the double stitches.

(C) The bent end of the S unit is passed through the overlap, and the horizontal connecting rod is inserted into the formed ring-shaped portion to join the T unit and the S unit together.

(D) The required number of F-units are piled up one by one at the mesh lengthwise end portions of the adjacent F-units to form a front wall. Here, the overlap of the F unit is aligned with the position of the S unit.

(E) Using the vertical connecting rod, the F unit and the S unit are joined by the same joining process as in the above (C).

(F) Another required F unit number is used as the standing back wall in the same manner as in (d) above, and is joined in the same manner as in (e) above.

(G) Put the filling sand inside the basket shape thus formed.

(H) Same as (a) above, except that the required number of different T units is the same as that in (a) above, except that the overlapping stitches are aligned with the positions of the S units and laid on the basket shape to form the top end wall. And join them together.

FIG. 4 is a perspective view showing two adjacent T units and F units and S units which are joined to these units in a state where the above steps (a) to (e) are performed. Fourth
In the figure, 1 is an S unit, 2 is a T unit, 3
Is an F unit, 4 is a horizontal connecting rod, and 5 is a vertical connecting rod. Reference numeral 6 is a wire clip for directly joining the T unit and the F unit to increase the strength of the entire cage shape.

FIG. 5 is an enlarged perspective view showing a joint portion between the S unit and the T unit. The illustrated example is an example of the T unit as the top wall, but similar joining is possible in the case of the T unit as the bottom wall and the F unit as the front wall or the back wall. In addition, the T unit (6) shown in white in the figure is superposed on the T unit (7) shown in black, and the horizontal connecting rod (9) is passed through the bent end (8) of the S unit at the overlapping line. ) Are joined together.

FIG. 6 is a perspective view showing an example in which the steps (a) to (h) are repeated to construct a group of snake baskets having two stages in the vertical direction and two stages in the depth direction, and FIG. 7 is shown in FIG. 8 is a sectional view taken along line AA of FIG. 8 and FIG. 8 is a sectional view taken along line BB of FIG. FIG. 9 is a cross-sectional view showing a modification example of FIG. 7, in which the phase of the S unit between the steps in the depth direction is shifted and F sandwiched between the steps.
An example in which one unit is also used is shown. This modification can also be applied in the vertical direction.

FIG. 10 is a sectional view similar to FIGS. 7 and 9, showing a processing example in which the lateral wall of the structure in the left-right direction is covered with an expanded metal plate. The left side wall in the drawing shows an example in which an expanded metal plate (10) bent in a U-shape is joined by Kannuki. A flat plate-shaped expanded metal plate may be simply applied to the inside of the S unit (1A) at the left end.
The side wall at the right end in the figure shows an example in which Kannuki joining is performed by using two expanded metal plates (11) bent in an L shape and a lattice unit (12) made separately for the ends.
The bent portion at the left end of the lattice unit (12) is the S at the right end.
It is engaged with the unit (1B).

FIG. 11 is a vertical cross-sectional view showing an example of a structure in which two stages of snake baskets are vertically shifted and stacked in the depth direction.

FIG. 12 is a vertical cross-sectional view showing an example of a construct in which two vertical snake baskets having different heights are arranged in the depth direction.

FIG. 13 is a front view showing an example of an S unit used for constructing a snake basket having a parallelogram in a vertical cross section as shown in FIG.

FIG. 14 is a perspective view showing a two-part S unit that can be used to construct a tall snake basket as shown on the right side of FIG. Upper half S unit (S1 /
2) and the lower half S unit (S2 / 2) are connected by a tubular connecting material (13) having an inner diameter approximately equal to the rod diameter.

FIG. 15 is a perspective view showing an example in which the cage structure of the present invention is used as a fish reef. For the sake of illustration, the inside surface of the basket is not shown in perspective.

[Effects of the Invention] As will be apparent from the above-described detailed description, the present invention is intended for the purpose of extending in the horizontal direction by a subtle combination of expanded metal plates and bar grids, and also for multi-stage stacking. Also provided are novel cage-shaped constructs suitable for use in the subject matter of.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a bar lattice used in the basket-shaped structure of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a plan view thereof. FIG. 4 is a perspective view showing an example of a procedure for constructing the basket-shaped construct of the present invention, and FIG. 5 is an enlarged perspective view of a joint portion thereof. FIG. 6 is a perspective view showing an example in which a snake basket group according to the present invention having two stages in the vertical direction and two stages in the depth direction is constructed.
The figure is a sectional view taken along the line AA, and FIG. 8 is a sectional view taken along the line BB. 9 and 10 are sectional views showing a modification of FIG. 7. 11 and 12 are cross-sectional views showing a modified example of FIG. FIG. 13 is a front view showing a modified example of FIG.
The figure is a perspective view showing a modification of FIG. FIG. 15 is a perspective view showing an example of the cage structure of the present invention as a fish reef.

Claims (6)

[Claims] 1. An expanded metal plate is arranged between lattices of bar members whose end portions are bent, and the bent end parts of the bar members are joined by engaging with the mesh of the expanded metal plate.
Free-standing cage structure. 2. The engagement between the bent end portion of the bar and the mesh of the expanded metal plate is constituted by passing the bent end portion through the mesh and joining with another bar member. The construct according to 1). 3. The structure according to item (1), wherein a welded reinforcing bar lattice is used as the bar lattice. 4. The construct according to item (1), wherein two end meshes of two expanded metal plates are overlapped with each other, and the expanded mesh plates are joined to a bar grid at the overlaps. 5. A snake basket is formed by filling gravel inside.
The construct described in (1) above. 6. The construct according to item (1), which is placed in water to form a fish reef.