JPH0676430U - Steel pipe pile fittings - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a joint for a steel pipe pile, which has a simple structure, has good workability and water resistance, and can easily adjust the pile interval. [Structure] Joint plates 2a and 2b are projectingly provided on opposite sides of an outer surface of a steel pipe pile main pipe so that they can be inserted into each other. The steel pipe piles are sunk and connected by alternately inserting the joint plates 2a and 2b in the excavation hole filled with soil cement. [Effect] The joint is simple, low cost, and easy to install. Further, the water-stopping property is improved, and the interval between the piles can be easily adjusted, so that the joints can be prevented from coming off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint for connecting steel pipe piles used for retaining walls to each other.

[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. Although there are various types of joints for the above-mentioned joints, generally, what is called an OC joint using small-diameter steel pipes, which is disclosed in Japanese Utility Model Publication No. 63-38285, is often adopted. ing.

[0003]

[Problems to be solved by the device]

 The OC joint as described above is manufactured by roll-forming a hot-rolled coil. However, in this method, a roll-forming die is produced for each shape each time. If it is changed, it will take much time and cost to manufacture the mold. In addition, since the current OC joint has a small clearance in a fitted state, it has drawbacks such as poor workability.

The present invention solves the drawbacks of the conventional joints described above, and by making the joints a plug-in structure, water resistance can be improved, and the pile intervals can be easily adjusted at the time of construction, reducing the manufacturing cost. It is intended to provide a joint 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 joint according to claim 1 projects to one side of the outer peripheral surface of the steel pipe pile main pipe 1 to form a single piece. The joint plate 2a or a plurality of joint plates 2a, 2a spaced in parallel with each other, and the other side of the joint plate 2a with which the joint plates 2a and 2a can be freely interleaved, 2b are each extended along one length direction of the steel pipe pile main pipe.

Further, the joint of claim 2 is characterized in that, in the first aspect, ribs 4 are provided at the tips of the joint plates 2a and 2b to prevent the ribs from coming off.

[0007]

[Action]

 The steel pipe piles provided with the joints are connected to each other by alternately inserting the joint plates 2a on one side and the joint plates 2b, 2b on the other side between the steel pipe piles. In this case, the pile spacing can be easily adjusted simply by changing the depth of the insertion. The space between the joint plates 2a and 2b is filled with soil cement, and the water can move a long distance, so that the water stopping property is improved. In addition, the joint becomes rigid due to the fitting of the joint plates 2a and 2b, and the rotation of the pile is prevented. Further, in the case where the ribs 4 are provided at the tips of the joint plates 2a and 2b, the pullout resistance of the joint increases, and it is possible to prevent the joint from coming off.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a main pipe of a steel pipe pile, and a single joint plate 2a projecting a required length outward in the diametrical direction of the main pipe 1 is provided on one side of both opposing outer surfaces thereof. 1 is extended by welding along the length direction. Similarly, on the other side, a plurality of joint plates 2b, 2b similar to the above are provided in parallel with each other along the lengthwise direction of the main pipe 1 at intervals such that they can be inserted into the joint plate 2a on the one side. It is extended by welding.

The above-mentioned steel pipe piles are successively sunk and connected in the excavation hole filled with soil cement. In this case, the joint plate 2a on one side of the steel pipe pile that has been previously sunk and the joint plates 2b and 2b on the other side of the steel pipe pile that will be subsequently sunk are overlapped in an interleaved state. Each joint plate 2a, 2b will be connected via the soil cement filled between them. At that time, the interval L between the steel pipe piles can be freely changed by changing the fitting depth of the joint plates 2a and 2b.

In the above embodiment, the number of the joint plate 2a on one side is singular, but as shown in FIG. 2, this can be a plurality of joint plates 2a, 2a. On the other hand, the number of the joint plates 2b, 2b on the other side is one plus the number of the joint plates 2a, 2a. In this way, by providing a plurality of joint plates 2a, the strength and rigidity at the time of joint connection are enhanced, and the water blocking property is further improved.

FIG. 3 and FIG. 4 show an example in which a plurality of joint plates are not independent of each other but one plate is bent and integrally formed. The embodiment shown in FIG. 3 corresponds to the joint shown in FIG. 1, and the joint plates 2b, 2b on the other side are integrally formed by the base plate 3 in a continuous manner. Further, the embodiment of FIG. 4 corresponds to the joint of FIG. 2, and the two joint plates 2a, 2a on one side are connected by the base plate 3 and the three joint plates 2b on the other side. , 2b, 2b are connected to the base plate 3 at the two outer sides thereof, and the central joint plate 2b is welded to the base plate 3.

FIG. 5 and FIG. 6 show an embodiment in which the joint plates 2a and 2b are provided with ribs 4 for preventing slipping off at the tips thereof. Of these, FIG. 5 exemplifies a case where the one joint plate 2a is one and the other joint plate 2b is two. The joint plate 2a has ribs 4 protruding to both sides, and the joint plate 2b, A rib 4 projects inwardly of the rib 2b. Further, FIG. 6 exemplifies a case where two joint plates 2a on one side and three joint plates 2b on the other side are provided, and the joint plates 2a, 2a on one side each have ribs 4 on the outer side. Of the joint plate 2b on the other side, and ribs 4 project on the inner side of the joint plate 2b on the other side, which faces the ones on both ends. By providing the ribs 4 in this way, the pull-out resistance between the joint plates 2a and 2b is increased. The ribs 4 are provided on all or some of the joint plates 2a and 2b. In addition, the protruding direction of the rib 4 is arbitrary and does not need to extend over the entire length of each joint plate 2a, 2b.

[0013]

[Effect of device]

 As explained above, since the joint of the present invention is provided with the joint plate protruding from the steel pipe pile main pipe, the joint shape is simple, manufacturing is easy and cost is reduced, and workability is improved. Improvement is achieved. In addition, the degree of freedom of the joint in the normal direction of the pile main pipe is large, and the pile interval can be easily adjusted during construction. Further, the water can be moved for a long distance, which improves the water blocking performance and makes the fitting state of the joint rigid, so that the rotation of the pile can be prevented. Particularly, in the joint according to the second aspect, by providing the rib at the tip of the plate, it is possible to prevent the joint from coming off.

[Brief description of drawings]

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

FIG. 2 is a plan sectional view showing the other embodiment.

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

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

FIG. 5 is a plan sectional view showing an embodiment in which a joint plate is provided with ribs.

FIG. 6 is a plan sectional view showing another embodiment.

[Explanation of symbols]

 1 Steel pipe pile main pipe 2a, 2b Joint plate 3 Base plate 4 Rib

Claims (2)

[Scope of utility model registration request] 1. A single joint plate or a plurality of joint plates that are parallel to each other and project on one side of an outer peripheral surface of a steel pipe pile main pipe, and the joint plates can be freely interleaved with the joint plate on the other side. A joint for a steel pipe pile, characterized in that a plurality of joint plates, which are parallel to each other, are provided along the longitudinal direction of the steel pipe pile main pipe. 2. The joint for a steel pipe pile according to claim 1, wherein a rib for preventing coming off is provided at a tip of the joint plate.