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Concrete pile with steel pipe casing and method of manufacture

A technology of concrete piles and manufacturing methods, which can be applied to sheet pile walls, buildings, and foundation structure engineering, etc., can solve problems such as difficulty in maintaining a cylindrical shape, lack of market sales, problems in productivity, and cargo handling, and achieve good quality , high versatility, and easy cargo handling

Inactive Publication Date: 2016-04-13
JX NIPPON MINING & METALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] According to the above description, the reason for not using a steel pipe with a thickness of less than 4.5mm is based on the following reason: Although it is stated that the lower limit of the thickness of the steel pipe is determined by the strength that can be centrifugally formed, and it needs to be 4.5mm or more, the actual basis is that preforming is The cylindrical shape is the main premise of the shape characteristics of conventional steel pipes. If the thickness of the steel pipe is made thinner than 4.5mm, it will easily expand accordingly, so it is difficult to maintain the cylindrical shape, and there are problems in productivity and cargo handling. marketing

Method used

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  • Concrete pile with steel pipe casing and method of manufacture
  • Concrete pile with steel pipe casing and method of manufacture
  • Concrete pile with steel pipe casing and method of manufacture

Examples

Experimental program
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Embodiment 1

[0064] figure 1 A perspective view showing a concrete pile with a steel pipe casing according to the present invention. figure 2 express will figure 1 A zoomed-in view of a concrete pile with a steel tube casing viewed from the frontal direction.

[0065] The present invention is a concrete pile with a steel pipe casing formed by covering the outer peripheral surface of a concrete pile 11 with a steel pipe 10. The steel pipe 10 forming the above casing is made of a thin steel plate, which is divided into a plurality of steel pipes in the circumferential direction and A plurality of segmented circular arc plates 1 having joint portions 1a, 1b formed by bending the thin steel plate at both end edges are connected in the circumferential direction via the joint portions 1a, 1b to form a cylindrical shape.

[0066] Specifically, the concrete pile with a steel pipe casing according to Example 1 is formed by covering the outer peripheral surface of a concrete pile 11 with a steel pi...

Embodiment 2

[0098] Figure 10 A~ Figure 10 C represents a different embodiment of the concrete pile with a steel pipe casing related to the present invention. Compared with the above-mentioned embodiment 1, the concrete pile with the steel pipe shell of this embodiment 2 is mainly different in the axial length of the steel pipe 10'. Since the other configurations are the same as those of the above-mentioned first embodiment, the same reference numerals are given and descriptions thereof are appropriately omitted.

[0099] That is, in the concrete pile with a steel pipe casing according to the second embodiment, the steel pipe 10' is partially covered (the left end part in the illustrated example) on the outer peripheral surface of the fabricated concrete pile 11. The steel pipe 10 ′ forming the above-mentioned shell is made of a thin steel plate, which is divided into a plurality of pieces (four pieces in the illustrated example) in the circumferential direction, and the thin steel pla...

Embodiment 3

[0105] Figure 11 , Figure 12 Various examples of concrete piles with steel pipe casings according to the present invention are shown. The concrete pile with a steel pipe shell of this Example 3 is different from that of the above-mentioned Example 1 mainly in that it is manufactured using a filler. The other configurations are the same as those of the first embodiment described above, so the same reference numerals are given and descriptions thereof are appropriately omitted.

[0106] That is, in the concrete pile with a steel pipe casing according to Example 3, the outer peripheral surface of the already-made concrete pile 11 is covered with the steel pipe 10 . The steel pipe 10 forming the above-mentioned shell is made of a thin steel plate, which is divided into multiple pieces (four pieces in the illustrated example) in the circumferential direction, and the thin steel plate is bent at both ends in the circumferential direction to form joints 1a, 1b. A plurality (4 pi...

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Abstract

Provided are a concrete pile with an outer-shell steel pipe and a method for manufacturing the same, the concrete pile with an outer-shell steel pipe being endowed with exceptional flexibility, constructability, and economic efficiency. This is achieved by using a steel pipe for covering a precast concrete pile, the pipe being configured from a combination of a plurality of divided arcuate plates, and by improving a conventional superfluous design related to the thickness of a steel pipe to obtain a more reasonable design. A steel pipe (10) for forming an outer shell is composed of a thin steel plate and is formed into a cylindrical shape by linking a plurality of divided arcuate plates (1) in the circumferential direction via joints (1a, 1b), the plurality of divided arcuate plates being formed by dividing the thin steel plate into a plurality of plates in the circumferential direction and bending the plates at the two circumferential edges to form the joints (1a, 1b).

Description

technical field [0001] The present invention belongs to the technical field of concrete piles with steel pipe casings and manufacturing methods thereof, and further relates to concrete piles with steel pipe casings using steel pipes composed of multiple segmented arc plates, especially thin-thickness (thin-wall) steel pipes Pile and method of manufacture thereof. Background technique [0002] Concrete piles that have been generally used in the past have high compression resistance but low bending resistance for supporting superstructures, so they are often not suitable for use in pile foundation structures that require bending resistance. Even the pretensioned centrifugal force high-strength prestressed concrete pile (PHC pile) with high axial resistance is the same. [0003] Therefore, there is a concrete pile with a steel pipe casing (SC pile) in which concrete is lined inside a steel pipe to improve bending resistance (for example, refer to Patent Documents 1 and 2). In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/30
CPCE02D5/72
Inventor 堀谦吾川端规之加仓井正昭
Owner JX NIPPON MINING & METALS CORP