JPH0336369B2 - - Google Patents

Description

[Detailed Description of the Invention] Object of the Invention (a) Industrial Application Field The present invention relates to a foundation for supporting various above-ground structures and a method for installing the same. This is the supporting foundation for the installation.

(b) Conventional technology With the practical application of satellite broadcasting, parabolic antennas for receiving broadcast radio waves are being installed in various places, but this type of antenna must be fixed with considerable precision in both angle and direction. As shown in FIG. 9, a foundation is used in which a root support 51 is fixed to a buried support 50 with a flange 58 fixed to the upper end, and a large diameter hole is dug into which the buried support 50 including the root support 51 is erected. It was to be hardened with concrete 52.

(c) Problems to be solved by the invention According to the above-mentioned conventional technology, it is necessary to dig a large diameter hole, which imposes a large labor burden on the worker.
Disposal of the large amount of excavated soil was also a difficult problem.

In addition, because the volume of the hole is large, it is expensive to use expensive quick-drying cement, so ready-mixed concrete is generally poured into the hole. This was a serious problem, as it required support, resulting in poor workability and a prolonged construction period.

The present invention has been made in view of the above problems, and provides a foundation for supporting above-ground facilities that is easy to construct and exhibits sufficient supporting capacity immediately after construction is completed using a small amount of quick-drying cement, and a method for installing the same. The purpose is to

(d) Means for Solving the Problems In order to achieve the above object, the present invention has a foundation structure that reduces the amount of earth and sand excavated and obtains a large resistance. A pipe-shaped fixing tube is fixed vertically to each tip of the pipe-shaped supporting legs fixed by welding, and a support column connection flange with a through hole is fixed to the upper surface of the center of the fixed part of each of the above-mentioned supporting legs. and a reinforcing bar of an appropriate length that can be freely inserted into each of the fixed tubes and whose upper end is a locking end that locks with the upper edge of the fixed tube, When installing the above foundation, a. Dig a Y-shaped burial trench on the ground surface so that the main body of the foundation is buried below the ground surface, and drill vertical holes of appropriate depth at the ends of each trench. Place the foundation body in the buried trench, b. Insert reinforcing bars from above each of the fixed tubes of the foundation body and insert them into the respective vertical holes, and engage the locking ends with the upper edges of the fixed tubes; c. After that, quick-drying cement was flowed into the vertical holes from each of the fixed pipes and filled and solidified to form a pile body with reinforcing bars. A quick-drying cement with a loose viscosity is injected into each pipe-shaped support leg and solidified to further strengthen the bending strength of each support leg. , After backfilling the buried trench, the antennas are attached to the pillars.

(E) Function The above foundation body becomes integrated with the pile body, which is composed of vertical holes as a frame, by the adhesion of the reinforcing bars inserted into the fixed pipe and the fixed pipe and quick-drying cement. Demonstrates sufficient initial support capacity as a foundation.

Therefore, even if an above-ground structure is attached via the flange immediately after foundation construction, it can be safely supported.

(F) Embodiment An embodiment of the foundation for supporting above-ground structures according to the present invention will be described below with reference to FIGS. 1 to 3.

1 in the figure is one end of three supporting legs 2, 2, 2 made of square pipes of equal length that are brought into contact in an equiangular radial manner to form a Y-shape in the horizontal direction, and on the upper surface of the corresponding contact part.
A flange board 3 with a through hole 4 drilled in the center and a cover board 5 are welded and fixed to the lower surface of the flange board 3, and each of the supporting legs 2, 2,
The base main body is formed by vertically fixing fixed pipes 6 made of short square pipes at the ends of each of the two ends.

Bolt insertion holes 7, 7, 7 are provided on the outer periphery of the flange board 3, and the through holes 4 of the flange board 3 are inserted into each support leg 2, 2 through the abutting portions of the support legs 2, 2, 2. , 2, and communicates with the hollow portion 8 of .

Reference numeral 9 denotes a reinforcing bar made by bending a reinforcing bar and inserting it into the fixed pipe 6, and the rectangular hole 10 of the fixed pipe 6.
Both ends of the horizontal rod portion 11 corresponding to the diagonal inner width of are bent upward orthogonally to form parallel vertical rod portions 12, 12.
At the same time, the upper ends of the vertical rod portions 12, 12 are bent outward to form locking ends 13, 13, and two diagonal lines of the rectangular hole 10 are formed with respect to each fixed tube 6. A pair of reinforcing bars 9, 9 are inserted so as to intersect.

Next, a method of installing the foundation for supporting an above-ground structure having the above structure will be explained with reference to FIGS. 4 to 8.

a First, as shown in FIG. 4, the ground surface is dug into the substantially planar shape of the foundation body 1, and a burial trench 20 is formed so that the foundation body 1 is buried below the ground surface, and three of the burial trenches 20 are A vertical hole 2 slightly deeper than the length of the vertical rod portion 12 of the reinforcing bar 9 is provided at the end of the location.
Holes 1, 21, and 21 are drilled using a drilling drill such as a hand auger.

b Next, after placing the foundation body 1 in the buried trench 20 (Fig. 5), one pair of reinforcing bars are inserted into the vertical holes 21, 21, 21 through the three fixed pipes 6, 6, 6. As shown in FIG. 6, each reinforcing bar 9 is inserted diagonally into the rectangular hole 10 of the fixed pipe 6, and the locking ends 13 are engaged with the upper edge of the inner corner. Stop.

c From this state, the vertical holes 21, 21, 21 are filled with quick-drying cement 14 to form the pile body 1 with reinforcing bars.
5.

This filling operation can be performed from the rectangular hole 10 of the fixed tube 6, and the filling is also carried out in the rectangular hole 10 and between the fixed tube 6 and the vertical hole 21 (the seventh
figure).

Furthermore, a quick-drying cement 14 with a loose viscosity is flowed and filled into the hollow part 8 of each support leg 2, 2, 2 from the through hole 4 of the flange disk 3 to further strengthen the bending strength of the support leg 2. There is no problem at all even if the work process is carried out before the foundation body 1 is placed in the burial trench 20.

The burial trench 20 is backfilled and the installation of the foundation is completed.

d When installing various columnar bodies 23 upright on the foundation installed as described above, insert the bolts and nuts 24 inserted into each bolt insertion hole 7 of the flange board 3 into the lower end of the columnar body 23 as shown in Fig. 8. By fastening and fixing the flange 25 to the flange 25, it is possible to support an object erected on the ground.

According to the above construction method, there are 9 reinforcing bars for the foundation body 1.
Since the pile pile pairs 15 are integrated at the same time as the quick-drying cement 14 hardens, and have a structure that exhibits sufficient support force in the soil, the support force for above-ground structures can be obtained immediately after construction.

(g) Effects of the invention As explained above, the foundation for supporting above-ground structures of the present invention does not require large diameter holes, so the labor burden of the work is extremely light, and the amount of excavation of earth and sand is also small. Therefore, countermeasures against remaining soil have become advantageous.

In addition, since quick-drying cement can be used as standard, sufficient supporting force can be obtained within a short period of time after construction, making it possible to erect pillars and install antennas within a short period of time. Since only a limited amount of expensive quick-drying cement is required, an increase in costs can be avoided, and the practical effects of implementing the present invention are extremely large.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a plan view of the basic body, FIG. 2 is a plan view of the same, and FIG. 3 is a front view of reinforcing bars. 4 to 8 are explanatory diagrams showing the method of installing a foundation in the order of steps, and FIG. 9 is a front view showing a conventional foundation. Description, 1: Foundation body, 2: Support leg, 3: Flange board, 6: Fixed pipe, 9: Reinforcement material, 13: Locking end, 1
4: Quick-drying cement, 15: Pile body, 20: Buried trench, 21: Vertical hole, 24: Bolt/nut.

Claims (1)

[Scope of Claims] 1. A pipe-shaped fixing tube is fixed in the vertical direction to each end of the support legs fixed by welding at equal intervals in a Y-shape in the horizontal direction, and a through hole is provided in the upper surface of the center of the fixed part of each of the above-mentioned support legs. A base body formed by fixing a drilled column connecting flange, and a base body of an appropriate length that can be freely inserted into each of the above fixed pipes and has a locking end that locks the upper end of the fixed pipe with the upper edge of the fixed pipe. A foundation for supporting above-ground structures, characterized by being made of reinforcing steel. 2 A pipe-shaped fixing tube is fixed in the vertical direction to each end of the supporting legs that are welded and fixed in a Y-shape in the horizontal direction, and a through hole is drilled in the center upper surface of the fixed part of each of the above-mentioned supporting legs for connection to the pillar. It consists of a basic body with a fixed flange and a reinforcing bar of an appropriate length that can be inserted into each of the fixed pipes and whose upper end is a locking end that locks with the upper edge of the fixed pipe. In the foundation for supporting above-ground structures, a. A Y-shaped burial trench is dug in the soil surface so that the foundation body is buried below the ground surface, and vertical holes of appropriate depth are drilled at the ends of each trench. Then, place the foundation body in the buried groove, b. Insert reinforcing bars from above each of the fixed pipes of the foundation body and insert them into the respective vertical holes, and engage the locking ends with the upper edges of the fixed pipes. , c. After that, quick-drying cement is filled and solidified into the vertical holes from each of the above-mentioned fixed pipes to form a reinforcing steel-containing body, and d. A method for installing a foundation for supporting an above-ground structure, comprising filling and solidifying dry cement into the Y-shaped support leg to strengthen the support leg.