JPH11181761A - Steel pipe pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly connect a steel pipe pile by inserting one tubular pile member into the other tutular pile member, and uniting spiral blades formed with an outer circumferential surface of each tubular member, and connecting them by bolts and nuts. SOLUTION: One or a plurality of drilling claws 13 which are projected downward from a tip surface and projected outward of an outer circumference of the tip are provided on a tip metal fitting 11. Drilling blades may be provided in addition to the drilling claws 13, or only the drilling blades may be provided. A lid plate 14 is provided on a rear end, and one or a plurality of spiral blades 12 are projected on the outer circumferential surface. Partitioning plates to receive the rear end of the tip metal fitting 11 are provided at the prescribed positions of a pile body 21, and one or several spiral blades 22 are projected on the outer circumferential surface. A rear end part of the tip metal fitting 11 is inserted in the pile body 21, spiral blades 12, 22 are united with each other, and tightened by bolts 5 and nuts 6 and connected to each other. The spiral blades 12, 22 may be connected by welding. Tubular members can be firmly connected with excellent workability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel pipe pile to be buried to impart strength to a ground for housing construction or the like.

[0002]

2. Description of the Related Art Conventionally, there has been known a steel pipe pile in which a drilling blade, a drilling claw, and the like are provided at a lower end of a pile main body, and spiral wings are provided on an outer peripheral surface. Some of such steel pipe piles are provided with a cutting blade, a cutting claw, or the like at the tip and a tip metal fitting provided with a spiral wing on the outer peripheral surface to be connected to the tip of the pile body. The reason is that it is better to separately form a tip metal fitting provided with a digging blade, a spiral wing, and the like and connect the tip metal fitting to the pile body.

[0003]

However, there is a problem how to connect the tip fitting thus formed to the tip of the pile body. In other words, it is necessary to have good connection workability in addition to requiring connection strength.

[0004] The steel pipe pile of the present invention is formed by firmly connecting a tip fitting to a pile main body with good workability.

[0005]

According to the steel pipe pile of the present invention, a part of one tubular pile member is inserted into the other tubular pile member.
The spiral wings formed on the outer peripheral surfaces of the two tubular pile members are combined, and the combined spiral wings are fastened with bolts and nuts to connect the two tubular pile members.

Further, in the steel pipe pile of the present invention, a part of one tubular pile member is inserted into the other tubular pile member, and spiral wings formed on the outer peripheral surfaces of both tubular pile members are combined and combined. The two spiral blades are connected by welding to connect the two tubular pile members.

Furthermore, in the steel pipe pile of the present invention, a part of one tubular pile member is inserted into the other tubular pile member, and spiral wings formed on the outer peripheral surfaces of both tubular pile members are combined and combined. The two spiral blades are fastened with bolts and nuts, and the combined spiral blades are connected by welding to connect the two tubular pile members.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of a steel pipe pile according to the present invention, showing a state before a rear end portion of a tip fitting as one tubular pile member is inserted into a pile body as another tubular pile member. .

In the steel pipe pile 1 of the present invention, a part of the rear end of the tip fitting 11 as one tubular pile member is inserted into the tip of a pile body 21 as the other tubular pile member. The spiral blades 1 formed on the outer peripheral surfaces of the two tubular pile members inserted as described above, respectively.
2, 22 are united. The two spiral blades 12 and 22 thus combined are connected with each other by tightening the bolts 5 and the nuts 6 to connect the two tubular pile members.

In the above embodiment, the connection between the tip fitting 11 and the pile main body 21 is shown, but the connection between the pile main bodies may be made. Alternatively, a part of the tip of the pile body 21 may be inserted into the rear end of the tip fitting 11 and connected.

The tip metal fitting 11 is provided with one or a plurality of excavating claws 13 protruding at least downward from the outer peripheral surface of the distal end and projecting outward from the outer peripheral surface of the distal end. An excavation blade may be provided at the end of the end fitting 11 in addition to the excavation claw 13. Alternatively, only the excavation blade may be provided instead of the excavation claw 13. A cover plate 14 is provided at the rear end of the tip fitting 11, and one or several turns of the spiral blade 12 are projected from the outer peripheral surface of the tip fitting 11.

The pile main body 21 is capable of inserting a part of the rear end of the above-mentioned tip fitting 21 from the tip opening. A partition plate 23 for receiving the rear end of the tip fitting 11 inserted as described above is provided at a predetermined position in the pile main body 21. Further, one or several spiral wings 22 are projected from the outer peripheral surface of the pile main body 21. When the rear end of the tip fitting 11 is inserted from the tip opening of the pile main body 21 and the rear end of the tip fitting 11 is received by the partition plate 23 of the pile main body 21, the spiral blade 22 and the spiral blade 12 of the above-described tip fitting 11 Is made so that it can be just combined.

The two spiral blades 12, 22 thus combined are combined.
Are fastened with bolts 5 and nuts 6 to connect the two tubular pile members, that is, the tip fitting 11 and the pile main body 21. 1
5 is a bolt hole formed in the spiral blade 12, and 25 is a through hole formed in the spiral blade 22.

As means for connecting and fixing the two tubular pile members, the combined spiral wings 12 and 22 are tightened with the bolts 5 and the nuts 6 and joined by welding as described in claim 2. Is also good.

Further, as described in claim 3, both the spiral wings 12, 22 combined with each other are fastened by the bolts 5 and the nuts 6, and are joined together by welding, so that the tip fitting 11 and the pile main body, which are both tubular pile members. 21 may be connected.

[0017]

The steel pipe pile of the present invention configured as described above has the following advantages.
By tightening the spiral wings of the combined tubular pile members using bolts and nuts, these tubular pile members can be connected, and the workability of the connection is good. Also, it can be firmly connected. The means for joining the spiral wings joined by welding is also welding of large surfaces, so that the workability of connection is good. The connection is strong. If this welding is used together with bolt and nut tightening, a stronger connection can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a steel pipe pile according to the present invention, showing a state before a rear end of a tip fitting as one tubular pile member is inserted into a pile body as another tubular pile member.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 steel pipe pile 11 tip fitting 12 spiral blade 13 excavating claw 14 cover plate 15 bolt through hole 21 pile body 22 spiral blade 23 partition plate 25 bolt through hole 5 bolt 6 nut

Claims (3)

[Claims] 1. A part of one tubular pile member is inserted into the other tubular pile member, spiral wings formed on the outer peripheral surfaces of both tubular pile members are combined, and the combined spiral wings are bolted and nutd. A steel pipe pile characterized by connecting both tubular pile members by tightening. 2. A part of one tubular pile member is inserted into the other tubular pile member, spiral wings formed on the outer peripheral surfaces of both tubular pile members are combined, and the combined spiral wings are connected by welding. A steel pipe pile characterized by connecting both tubular pile members together. 3. A part of one tubular pile member is inserted into the other tubular pile member, the spiral wings formed on the outer peripheral surfaces of both tubular pile members are combined, and the combined spiral wings are bolted and nutd. A steel pipe pile characterized in that the two spiral wings are joined together by welding and the two spiral wings are joined together by welding to connect the two tubular pile members.