JPH08100432A - Footing device - Google Patents

Abstract

PURPOSE: To easily construct a footing and shorten the construction period by molding the footing in a factory in advance, conveying it to the site, connecting the recess of the footing to the head section of a support pile driven into the ground, and assembling the footing and support pile together. CONSTITUTION: A sheet pile 1 is driven into the ground 2 to execute a temporary cofferdam, the inside of the temporary cofferdam is excavated, then a support pile 3 is driven at the prescribed position while a screwed head section 3a is protruded on the ground. A footing 4 molded in a factory in advance and conveyed to the site is hoisted by a crane, and a recess 4a is positioned with the head section 3a of the support pile 3. The footing 4 is rotated while being hoisted, the recess 4a is screwed to the head section 3a of the support pile 3, and the footing 4 is connected to the support pile 3. The process is simplified, the construction period is shortened, the labor is reduced, and safety can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a footing device having a footing which is the basis of a building or a pier.

[0002]

[Prior Art] When building a building or pier,
The footing, which is the basis for this, is constructed. FIG. 8 shows a conventional construction of this footing, in which the ground 80 and the sheet pile 81
The ground 80 is excavated. Then, the support pile 82 is placed, and the footing 83 is installed on the head of the support pile 82. The construction of the footing 83 is performed by assembling the mold 84 on the head of the support pile 82, arranging the reinforcing bars 85 in the mold 84, and then pouring concrete into the mold 84 to form and train it. After the construction of this footing 83, the form 84 is removed and the construction is completed.

[0003]

In the conventional construction, the mounting of the support pile 82, the assembling of the form 84, the reinforcement of the reinforcing bar 85,
Since the concrete is poured and cured and the form 84 is removed, the number of steps is long, the construction period is long, and much labor is required. Further, in these steps, since the worker works in the temporary deadline, there is a risk that the temporary deadline may collapse. Furthermore, specialized workers are required in various processes, and in addition, there is a problem depending on the weather.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a footing device that can be installed in an early stage, while the number of steps can be greatly reduced, the risk is low, skill is not required. To do.

[0005]

The footing device of the present invention comprises a support pile driven into the ground, and a recess formed in a predetermined shape and having a head into which the head of the support pile is inserted. It is characterized by comprising a footing and a connecting means for connecting the support pile and the footing.

[0006]

The footing having the above construction is preformed in a factory or the like, transported to the site, and joined to the support pile by the joining means to complete the construction. Therefore, it is simple and can be installed in a short period of time.

[0007]

FIG. 1 shows a first embodiment of the present invention. This embodiment is provided with a support pile 3 that is installed on a ground 2 that is formed by hammering a sheet pile 1 and temporarily cuts it, and a footing 4 that is arranged on the support pile 3. The support pile 3 is driven to a predetermined depth in the ground, but its head 3a is exposed above the ground at a predetermined height.

The footing 4 is preliminarily formed into a predetermined shape in a factory or the like. This molding is performed by incorporating a reinforcing bar (not shown) in a form (not shown), pouring concrete into the form, curing and curing, and then removing the form. In this molding, a recess 4a into which the head 3a of the support frame 3 is inserted is formed at the bottom of the footing 4 at the same time. Footing 4 molded in the factory like this
Are transported to the site and assembled to the support pile 3. Therefore, it is not necessary to assemble the formwork and the reinforcing bar on the site and cure the concrete, the number of steps is remarkably simplified, and the construction can be performed in a short period of time.

Assembling the support frame 3 and footing 4
This is done by providing a coupling means to these. In the present embodiment, the head 3a of the support frame 3 is preliminarily threaded, and the recess 4a of the footing 4 is formed as a screw hole to form a coupling means. Then, by screwing the head 3a of the support frame 3 into the recess 4a of the footing 4, the support frame 3 and the footing 4 are firmly coupled and strength is imparted. This allows it to be used as a foundation for buildings and piers.

2 and 3 show the construction sequence of this embodiment. First, as shown in FIG. 2, the sheet pile 1 is driven into the ground 2 to make a temporary deadline. Then, after excavating the inside of the temporary deadline, the support pile 3 is driven at a predetermined location. This driving is performed so that the threaded head 3a is pulled out to the ground. Next, as shown in FIG. 3, the footing 4 preformed in the factory and transported to the site is hung by a crane or the like, and the recess 4a is aligned with the head 3a of the support pile 3. Then, the footing 4 is rotated while being suspended so that the recess 4a and the head 3a of the support pile 3 are screwed together, and the footing 4 and the support pile 3 are connected. In this way, the footing device shown in FIG. 1 is constructed.

In this embodiment, the construction is completed simply by connecting the footing 4 preformed in a factory or the like to the support pile 3. For this reason, it is possible to omit all the steps for constructing the footing 4 on the site, shorten the construction period, and reduce the labor. Moreover, the work period in the temporary deadline is shortened, the risk is reduced, a specialized worker is not required, and the weather is not affected.

4 to 7 each show another embodiment of the present invention. In the second embodiment shown in FIG. 4, the head 3a of the support pile 3 is fitted into the recess 4a of the footing 4, and the knock pin 6 is driven into these, so that the support pile 3 and the footing 4 are connected. . In the third embodiment of FIG. 5, the head 3a of the support pile 3 is fitted in the recess 4a of the footing 4 as in FIG. 4, but the screw rod 7 extends upward from the head 3a of the support pile 3. Through the footing 4 in the vertical direction. Then, a bolt 8 is screwed into the extracted end of the screw rod 7 to connect the footing 4 to the support pile 3.

In the fourth embodiment shown in FIG. 6, the support pile 3 and the footing 4 are connected by a welded portion 9. In order to perform this welding, in FIG. 6, at least the outer surface of the head portion of the support pile 3 and the bottom surface of the footing 4 are made of metal.

In the fifth embodiment shown in FIG. 7, footing 4
The diameter of the head portion 3a of the support pile 3 is smaller than that of the concave portion 4a, and a gap is formed between the head portion 3a of the support pile 3 and the concave portion 4a of the footing 4. The support pile 3 and the footing 4 are joined by filling a filler 10 such as mortar into this gap. The filling of the filler 10 can be performed by forming a hole communicating with the gap in the footing 4 and injecting the hole through this hole. In addition, in the illustrated example, the outer surface of the head 3a of the support pile 3 and the inner surface of the recess 4a of the footing 4 are formed into an uneven surface such as a corrugated surface. There is.

[0015]

According to the present invention, since the footing is preformed in a factory or the like and assembled with the support piles on the site, the process is remarkably simplified, the work period can be shortened, the labor can be reduced, and the safety can be improved. In addition, since the footing is produced at the factory, the quality is likely to be stable, and the finished product can be inspected at the factory. Further, since the support pile and the footing are firmly joined by the joining means, they can be used as a foundation of a building.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional view showing the construction of the first embodiment.

FIG. 3 is a sectional view showing a second stage of construction of the first embodiment.

FIG. 4 is a sectional view of a second embodiment of the present invention.

FIG. 5 is a sectional view of a third embodiment of the present invention.

FIG. 6 is a sectional view of a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a fifth embodiment of the present invention.

FIG. 8 is a sectional view of a conventional structure.

[Explanation of symbols]

 3 Support pile 3a Head 4 Footing 4a Recess

Claims (1)

[Claims] 1. A support pile driven into the ground, a footing formed in a predetermined shape in advance and having a recessed portion into which the head of the support pile is inserted, and the support pile and the footing. A footing device comprising a coupling means for coupling.