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Negative-Poisson-ratio steel tube screw pile foundation

A technology of negative Poisson's ratio and screw piles, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of cumbersome foundation construction, large environmental damage, weak adaptability, etc., achieve environmental protection and adapt to geological conditions, improve Effects of load-bearing performance, pull-out resistance, and stress diffusion

Active Publication Date: 2018-08-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing underground foundations are mainly reinforced concrete structures, which are cumbersome to construct, cause great damage to the environment, and have weak adaptability

Method used

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  • Negative-Poisson-ratio steel tube screw pile foundation
  • Negative-Poisson-ratio steel tube screw pile foundation
  • Negative-Poisson-ratio steel tube screw pile foundation

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0029] It should be understood that terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0030] Such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, the present invention provides a negative Poisson's ratio steel pipe screw pile foundation, comprising:

[0031] Pile body 10, which is a hollow cylinder, is provided with a plurality of vertically arranged slots along the pile body 10, and a baffle plate 101 is movably connected in the slot, and one end of the baffle plate 101 can be positioned relative to the pile body. 10 The side wall expands outwards to form an auxetic part;

[0032] A steel rod 20 embedded in the pile body 10; the upper e...

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Abstract

The invention discloses a negative-Poisson-ratio steel tube screw pile foundation which comprises a pile body, a steel rod, connecting rods and a pile tip. The pile body is a hollow cylinder, a plurality of vertical grooves are formed along the pile body, baffles are movably connected into the grooves, and one end of each baffle can be outwards expanded relative to the side wall of the pile body to form a pull expansion part; the steel rod is embedded into the pile body, and the upper end of the steel rod is connected with the pile body through a movable connecting component; one ends of the connecting rods are hinged to the baffles to form rotary pairs, and the other ends of the connecting rods are connected with the steel rod through movable hinges; when the steel rod is pulled to be upwards lifted, the connecting rods are driven to move to enable the baffles to be outwards expanded; and spiral blades are arranged on the surface of the pile tip and are continuously arranged to the connecting position of the pile tip and the pile body from the tip end of the pile tip. The negative-Poisson-ratio steel tube screw pile foundation can be used as a novel steel tube screw pile foundation with better dynamic and physical performance in the electric transmission line projects.

Description

technical field [0001] The invention relates to the technical field of engineering, in particular to a negative Poisson's ratio steel pipe screw pile foundation. Background technique [0002] With the continuous development of the power industry, the construction of the national large power grid is extremely critical, and the requirements for the sophisticated technology and advanced equipment required for the construction of the power grid are getting higher and higher. At the same time, my country has a vast territory, geological and soil conditions are changeable, and the operating environment of transmission towers is often complex. Therefore, it is very necessary to use safe and reliable underground foundations to ensure the operation of transmission towers. The existing underground foundations are mainly reinforced concrete structures, which are cumbersome to construct, cause great damage to the environment, and have weak adaptability. Especially under various forms o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/56
CPCE02D5/56
Inventor 张新春何泽群白云灿朱昂韩春雨
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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