JPH0223632Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) The present invention stabilizes the direction of the driven pile by attaching it to the meshing part of the pile body when driving a pile such as a steel sheet pile into the ground. This invention relates to a stabilizing metal fitting for the tip of a pile that can prevent deformation of the pile.

(Prior art) When a steel sheet pile with a flat, groove-shaped or Z-shaped cross section and interlocking parts at the ends is driven into highly viscous soil such as clay or silt, the surrounding surface of the pile and the soil shows a large contact resistance. This high circumferential contact resistance not only reduces the pile driving efficiency, but also causes inconveniences such as causing the pile driving direction to go out of order, increasing the pile section resistance, and causing the pile row to fall forward. do.

Therefore, conventionally, as shown in Fig. 5, a rectangular piece is made from a steel plate, and these pieces 30, 3
1 was welded to the meshing part and side part of the driving pile 21, and the pile was driven while holding the meshing part of the pile 20. However, in this method, the pieces 30 and 31 must be welded to the pile at the pile driving site, which takes time and effort and reduces work efficiency.

Furthermore, since the piece 30 is fixed to the driven pile 21, there is no play between it and the meshing part of the existing pile 30.
There have been cases in which force is applied to the center portion 21a of the side portion of the driven pile 21 due to penetration resistance generated during pile driving, resulting in deformation of the pile.

(Purpose of the invention) This invention eliminates the above-mentioned drawbacks of the conventional technology, and its purpose is to improve the directionality of the tip of the pile due to the resistance received when driving steel sheet piles or other piles into the ground. The present invention provides a stabilizing fitting for the tip of a pile, which prevents the pile from becoming out of alignment and deforming the pile, and enables accurate and quick driving.

(Embodiment of the invention) An embodiment of the invention will be described based on the drawings. In the figures, Fig. 1 is a plan view, Fig. 2 is a perspective view, Fig. 3 is a plan view explaining the state attached to a pile, Fig. 4 is a plan view of another embodiment, and Fig. 5 is a conventional example. FIG.

As shown in FIGS. 1 to 3, a pair of substrates 1 and 2 are constructed by bending two rectangular steel plates into a substantially V-shape. The bent portion at the tip of the substrate 1 is a holding portion 1a that holds the engaging portion 10a of the driving pile 10, and the bent portion at the tip of the substrate 1
The other part is a guide part 1a that guides the side part of the driven pile 10. A bottom plate 3 is provided between the bottom surface of the guide portion 1b and the bottom surface of the guide portion 2b of one of the substrates 2.
is installed.

To explain the operation of this embodiment configured in this way, first, as shown in FIG.
One of the engaging portions 10a of the pile 10 to be driven is engaged with a. Before or after this operation, the end fittings K are attached to the engaging parts 10a, 11a.

This installation is performed using the holding part 1 at the tip of the tip fitting K.
a, 2a are attached so as to sandwich the meshing parts 10a, 11a of both piles, and both guide parts 1b, 2b
The side part of the driving pile 10 is passed between them, and the bottom plate 3 is in contact with the bottom surface of this side part.

In this state, when force is applied from the upper end of the pile 10 and the metal fitting K is driven in, the bottom plate 3 of the metal fitting K is pressed by the tip of the pile 10, and as the pile 10 descends, it descends.

In this case, the meshing parts 10a and 11a are the gripping parts 1
Since the pile 10 is guided and supported in a pinched manner by the piles 10a and 2a, the engaging portion 10a rotates and the tip of the pile 10 does not move left or right as in the conventional case. In other words, the driving direction of the pile is controlled by the existing pile 11, and the directionality of the tip does not go out of order.

Particularly in the case of U-shaped, H, or Z-shaped sheet piles, force is applied to the center of the sheet pile during driving, so the section (interlocking part) is unstable, but due to the function of the tip fitting K mentioned above, , meshing part 1
0a is stable and the pile is driven straight.

Moreover, both the holding parts 1a and 2a are attached to both stakes 1
0 and 11 are not fixed by a method such as welding, and there is play in the meshing parts 10a and 11a,
Even if the directionality of the tip of the pile 10 goes out of order and the engaging part 10a moves during driving, there is no risk of the pile 10 being deformed, and the tip fitting K will not break or come off, and the pile 10 will The direction can be corrected.

Needless to say, it can be easily installed at the pile driving site without the need for welding or other labor.

In this way, in this example, the meshing part between the existing pile and the driven pile is prevented from rotating, which reduces the number of section resistance piles and enables quick and accurate driving of piles with a small driving force. play.

In another embodiment shown in FIG. 4, the holding portion 1a of the board 1 is extended to form a reinforcing plate 1c on the outside of the guide plate 1b, and a reinforcing plate 2c is also provided on the outside of the board 2. It is. According to this embodiment, the strength of the tip fitting K is increased.

(Effects of the invention) As described above, the invention has a simple structure, is easy to install, prevents the pile tip from becoming misoriented due to resistance during pile driving, and prevents pile deformation. , it has the effect of being able to drive piles accurately and quickly, and achieves the intended purpose.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a plan view, Fig. 2 is a perspective view, Fig. 3 is a plan view illustrating the state attached to a pile, and Fig. 4 is a plan view of another embodiment. FIG. 5 and FIG. 5 are explanatory diagrams of the conventional technology. 1, 2...Substrate, 1a, 2a...Holding part, 1
b, 2b...guide section, 3...bottom plate.

Claims (1)

[Scope of utility model registration request] A holding part constitutes a pair of substrates made of metal plates, and the tips of the substrates are bent to guide and support the interlocking part of the existing pile and the driven pile in a pinching manner, and a guide part that holds the side part of the driven pile. What is claimed is: 1. A pile tip stabilizing fitting comprising: a bottom plate provided on the bottom surface of the guide portion;