JPH0676431U - Steel pipe pile joint device - Google Patents

Abstract

(57) [Summary] [Purpose] To strengthen joints that connect steel pipe piles together, reduce costs, and improve workability. [Structure] In a joint for connecting steel pipe piles 1 and 1 by fitting a male joint member 3 and a female joint member 4 provided on the outer surface of a steel pipe pile 1, both wing portions 5, 5 of the female joint member 4 in the joint. The spaces are joined together by the spacing member 8 at the intermediate portion from the root to the tip. Thereby, the rigidity of the female joint member 4 is increased, the joint can be prevented from coming off, the cost can be reduced, and the pile erection accuracy is improved and the workability is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint device for mutually connecting steel pipe piles used for retaining walls and the like.

[0002]

[Prior art]

 Soil retaining walls, which are constructed by connecting steel pipe piles in columns, are used for retaining soil and partitioning at construction sites. The retaining walls are connected to each other via joints provided in the longitudinal direction on both sides of each steel pipe pile. There are various types of joints for the above-mentioned joints, but in general, many joints called OC joints using small diameter steel pipes, which are disclosed in Japanese Utility Model Publication No. 63-38285, are often used. In addition, a C-shaped joint member, which is a modification of the C-shaped joint member, is used.

[0003]

[Problems to be solved by the device]

 However, in the OC joint as described above, when a tensile force acts on the fitted joint, the C-shaped or U-shaped joint member is more likely to open, so that the OC joint has a drawback in that it may come off.

The present invention solves the above-mentioned drawbacks of the conventional joints, improves the strength, rigidity, and water blocking performance of the joints, prevents the joints from falling out, and has a high pile installation accuracy, which reduces the cost. An object of the present invention is to provide a joint device for a steel pipe pile that can be achieved.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The present invention is directed to the outer surface of the main pipe 2 of the steel pipe pile 1 in the longitudinal direction of the main pipe 2. A male joint member 3 and a female joint member 4 are provided so as to project along the joint, and both joint members 3 and 4 are fitted to connect the steel pipe piles 1 and 1 to each other. , 5 are connected to each other by a spacing member 8 at an intermediate portion from the root to the tip.

[0006]

[Action]

 As shown in FIG. 1, the steel pipe piles 1 and 1 provided with the above joints are connected to each other by inserting the male joint member 3 of the steel pipe pile, which is to be subsequently sunk, into the female joint member 4 of the steel pipe pile that has been previously sunk. It is done by fitting. In this case, since the intermediate portions of the blades 5 and 5 of the female joint member 4 are joined by the spacing member, the strength and rigidity of the blades 5 and 5 against opening are increased. Therefore, the fitted state becomes solid, and the water blocking performance can be improved. Further, even if the thickness of the female joint member 4 is reduced, the joint can be prevented from coming off.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 1 is a steel pipe pile, and one male joint member 3 of one of the joints connecting the steel pipes 2 and 2 is provided on one of the opposing outer side surfaces of the large-diameter main pipe (steel pipe) 2. On the other side of the outer surface of the steel pipe 2, the other female joint member 4 is fixed by welding 9, 9 along the longitudinal direction of the steel pipe 2, respectively.

The one male joint member 3 is formed of a small-diameter steel pipe having a circular cross section or a Dharma cross section as shown in the drawing. The other female joint member 4 has a pair of blades 5 and 5 projecting at intervals wider than the outer diameter of the male joint member 3, and the tips of both blades 5 and 5 are bent toward opposite sides. Thus, the protrusions 6 and 6 are formed, and the opening 7 through which the base portion of the male joint member 3 can be inserted is formed between the protrusions 6 and 6. The wing portions 5 and 5 are connected to each other in the middle portion by the spacing members 8 and 8 which are spaced from each other in the longitudinal direction.

In the embodiment shown in the drawings, the blades 5 and 5 are connected to each other at the base portion to be welded 9 to the steel pipe 2. However, the blades 5 and 5 are formed independently of each other. You can also do it. Further, the spacing member 8 can be attached by welding a rod or riveting, or by tightening a nut with a bolt. Further, the spacing member 8 is not limited to a rod member, and a plate member can be used, or the plate member can be extended over the entire length of the blade portions 5, 5.

FIG. 3 shows an example in which a member 4a having a C-shaped cross section is used as the female joint member 4, and both blades 5 and 5 are formed in an arc shape. FIG. 4 shows an example in which the male joint member 3 is a member 3a having a T-shaped cross section and the female joint member 4 is a member 4a having a C-shaped cross section.

[0011]

[Effect of device]

 As described above, in the joint device of the present invention, since the intermediate portions of both blades of the female joint member that are externally fitted to the male joint member are connected by the spacing member, the opening of both blades is suppressed, and the male joint member is suppressed. Can be prevented from coming off. In addition, since the fitting state of the joint is firm, the water stopping property is improved. Further, even if the joint plate is thinned, the joint can be prevented from coming off, which can contribute to cost reduction, and the rigidity of the female joint member is increased, so that the pile installation accuracy is improved and the workability is improved.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the main part.

FIG. 3 is a plan sectional view showing a main part of another embodiment of the present invention.

FIG. 4 is a plan sectional view showing a main part of still another embodiment of the present invention.

[Explanation of symbols]

 1 Steel Pipe Pile 2 Steel Pipe 3 Male Joint Member 4 Female Joint Member 5 Wing Part 7 Both Mouth Portion 8 Interval Holding Member

Claims (1)

[Scope of utility model registration request] On the outer surface of the main pipe of the steel pipe pile, a male joint member and a female joint member are provided to project along the longitudinal direction of the main pipe, and a joint for connecting the steel pipe piles by fitting these joint members together, A joint device for a steel pipe pile, characterized in that both wing portions of a female joint member are connected to each other by a spacing member at an intermediate portion from a root to a tip thereof.