JPH0540328U - Steel pipe pile joint structure - Google Patents

Abstract

(57) [Summary] [Purpose] To construct a joint structure for steel pipe piles that is simpler and more reliable than the conventional method and has a high waterproofness. [Structure] Each joint piece 3, 3'of adjacent steel pipe piles having joint pieces 3, 3'having inner curved portions 2, 2'bent at one end fixed to the outer peripheral surface of the steel pipe 1, 1 '. And the steel rod 4 was press-fitted between the joint pieces 3 and 3 '.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint structure for steel pipe piles used for retaining walls or water cut-off works.

[0002]

[Prior Art]

 Conventional steel pipe pile and steel pipe sheet pile joints are constructed by engaging joint pieces fixed to the outer peripheral surface of the steel pipe. In this case, if the joint has poor water-stopping performance and high water-stopping performance is required, the joint was filled with mortar.

[0003]

[Problems to be solved by the device]

 In the above conventional joint structure, it takes a lot of work to fill the mortar after discharging the soil in the joint part by the compressed air, and the mortar is not filled due to the inclusion of the sand during the mortar filling. There is a problem that the water blocking performance is deteriorated due to some parts.

The present invention has been proposed in view of the above problems of the prior art, and an object of the present invention is to provide a joint structure for a steel pipe pile that is simpler and more reliable than the conventional method and has a high waterproofness. It is in.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the joint structure for steel pipe piles according to the present invention has a pair of adjacent steel pipe piles in which an outer-circumferential surface of a steel pipe is fixed with an inwardly-circular joint piece whose one end is bent inward. Of the steel pipe piles, the end portion having the bent portion of the joint piece of the steel pipe pile is fitted into the joint piece of the other steel pipe pile, and the steel rod is press-fitted between the joint pieces of the opposite steel pipe piles. Is configured.

[0006]

As described above, according to the present invention, since the steel rod is press-fitted into the engaging portions of the adjacent circular joint pieces of the adjacent steel pipe piles, elasticity is imparted by the steel rod being formed in the partial circle shape. The joint pieces are pressed against the facing surfaces of the joint pieces and the end winding portion of one joint piece to cause elastic deformation of the joint pieces, and the joint pieces are crimped to each other by the pressure of the steel rod, The waterproof performance of the pile joint is secured.

[0007]

【Example】

 The present invention will be described below with reference to the illustrated embodiments. Steel pipes 1, 1'consisting of the main body of the steel pipe piles to be joined are joints in which the outer peripheral surface of each steel pipe 1, 1'is circularly cut and one end is provided with an inner curved portion 2, 2 '. Pieces 3 and 3'are welded.

Then, the end portion having the bent portion 2 ′ of the joint piece 3 ′ of the other steel pipe pile is fitted into the joint piece 3 of the one steel pipe pile, and the steel rod is interposed between the joint pieces 3 and 3 ′. 4 is press-fitted, the steel rod 4 is pressed against the facing surfaces of the joint pieces 3 and 3'and the other joint piece 3'bent portion 2 ', and the other joint piece 3'is joined to the one joint piece 3'. The bent portion 2 of the piece 3 is pressure-contacted, and thus the pressure of the steel rod 4 causes the two joint pieces 3, 3'to be pressure-bonded to each other, so that the waterproofness of the joint portion of the steel pipe pile is secured.

The steel rod 4 is provided with a large number of ridges extending in the axial direction on its outer peripheral surface in order to increase the pressure contact force between the joint pieces 3 and 3 ′. Fig. 2 shows a part of Izutsu Ichi constructed by connecting steel pipe piles using the joint structure.

[0010]

[Effect of the device]

 According to the present invention, a steel pipe pile is used in which an endless circular joint piece with one end bent is fixed to the outer peripheral surface of the steel pipe, and the joint pieces of adjacent steel pipe piles are engaged with each other. By press-fitting the steel rod between the joint pieces, it is possible to construct a joint for steel pipe piles with high water-stop performance more easily and reliably than the conventional method.

[Brief description of drawings]

1 is a cross-sectional plan view showing an embodiment of a joint structure for a steel pipe pile according to the present invention.

FIG. 2 is a cross-sectional plan view showing a part of a well tube made of a steel pipe pile having a joint structure according to the present invention.

FIG. 3 is an elevation view of a steel rod.

FIG. 4 is a plan view of a steel rod.

[Explanation of symbols]

 1,1 'Steel pipe 2,2' Bent part 3,3 'Joint piece 4 Steel rod

Claims (1)

[Scope of utility model registration request] 1. A bent portion of a joint piece of one of the steel pipe piles among a pair of adjacent steel pipe piles, in which a joint piece in the shape of a circle whose one end is bent inward is fixed to the outer peripheral surface of the steel pipe. Having an end,
A joint structure for a steel pipe pile, characterized in that the steel rod is fitted into the joint piece of the other steel pipe pile, and a steel rod is press-fitted between the joint pieces of the two steel pipe piles facing each other.