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Power transmission tower pile foundation with adjustable anti-drawing and anti-extrusion performance

A transmission tower and anti-pulling technology, applied in infrastructure engineering, construction, protection devices, etc., can solve the problem of increasing the inclination of the transmission tower pile foundation to the inside of the turn, reducing the reliability of the transmission tower pile foundation, and increasing the transmission cable. Power accidents and other problems, to achieve the effect of saving maintenance costs, saving construction period, and reducing the probability of power accidents

Active Publication Date: 2021-05-28
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing transmission tower pile foundations cannot adjust their own pullout and extrusion resistance properties according to different geological conditions, so as to adapt to the pullout and extrusion resistance of transmission tower pile foundations under different geological conditions. The performance requirements reduce the reliability of the pile foundation of the transmission tower, which in turn increases the probability of the pile foundation of the transmission tower tilting to the inside of the turn, which in turn increases the probability of an electric accident caused by the pulling and breaking of the transmission cable, which is difficult to guarantee Grid operation security

Method used

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  • Power transmission tower pile foundation with adjustable anti-drawing and anti-extrusion performance
  • Power transmission tower pile foundation with adjustable anti-drawing and anti-extrusion performance
  • Power transmission tower pile foundation with adjustable anti-drawing and anti-extrusion performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as Figure 1-4 As shown, a power transmission tower pile foundation with adjustable anti-drawing and anti-extrusion properties includes a support cylinder 1, a concrete pier 2, a fastener 3, a sealing layer, a connecting pipe 5, an air pressure regulating device, and a plugging piece.

[0045] The upper end surface of the support cylinder 1 is open.

[0046] Fasteners 3 are pre-embedded in the concrete pier 2, and the fasteners are anchor bolts that are convenient for the staff to obtain materials. The upper part of the anchor bolts exposes the upper end surface of the concrete pier 2, and the anchor bolts are used to fix the lower end of the transmission tower. On the end face of the concrete pier 2.

[0047] The concrete pier 2 is installed in the support cylinder 1, and the concrete pier 2 is provided with a ventilation hole 201, and the ventilation hole 201 communicates with the cavity in the support cylinder 1 between the concrete pier 2 and the bottom of the...

Embodiment 2

[0058] On the basis of embodiment 1, this embodiment 2 makes the following improvements:

[0059] Such as Figure 5-9 As shown, in Embodiment 2, the rubber plug 7 is no longer used as the blocking member, but the one-way valve 8 is used as the blocking member. The one-way valve 8 is installed in the air hole 201 . The one-way valve 8 is a common valve body 801 on the market, and it is easy to obtain materials. The one-way valve 8 includes a valve body 801 and a valve core 802 installed in the valve body 801. When no external force acts on the valve core 802, the valve core 802 is lifted up by the elastic member 803 installed in the one-way valve 8 to close the valve body. The inlet 8011 of 801, the elastic member 803 adopts a spring with convenient materials, when the valve core 802 is squeezed by external force, the valve core 802 overcomes the elastic force of the elastic member 803 and opens the inlet 8011, and the fluid can flow through the inlet 8011 of the valve body 8...

Embodiment 3

[0066] On the basis of embodiment 2, the present embodiment 3 makes the following improvements:

[0067] Such as Figure 10 As shown, the air hole 201 is provided with an installation pipe 10, and the installation pipe 10 is fixed in the inner wall of the air hole 201 by screws. The one-way valve 8 is arranged in the installation pipe 10 , and the valve body 801 of the one-way valve 8 is welded and fixed to the inner wall of the installation pipe 10 . The inner wall of the installation pipe 10 is provided with internal threads, and the outer wall of the connecting pipe 5 near the end of the concrete pier 2 is provided with external threads, and the connecting pipe 5 is threaded with the installation pipe 10 at the end near the concrete pier 2 .

[0068] When the connecting pipe 5 is connected to the cavity between the concrete pier 2 and the bottom of the supporting cylinder 1, the staff can directly screw the end of the connecting pipe 5 provided with the connecting plate 9 ...

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Abstract

The invention discloses a power transmission tower pile foundation with an adjustable anti-drawing and anti-extrusion performance. The power transmission tower pile foundation comprises a supporting cylinder with an opening in the upper end face and a concrete pier installed in the supporting cylinder, a fastener is embedded in the concrete pier, the upper portion of the fastener is exposed out of the upper end face of the concrete pier, a sealing layer is arranged on the side wall, close to the supporting cylinder, of the concrete pier, the concrete pier is connected with an air pressure adjusting device through a connecting pipe, the connecting pipe communicates with a cavity, located between the concrete pier and the cylinder bottom of the supporting cylinder, in the supporting cylinder through a vent hole formed in the concrete pier, and a plugging piece used for being matched with the vent hole is arranged on the concrete pier. The pulling resistance and the pressure resistance of a pile foundation of a power transmission tower can be adjusted.

Description

technical field [0001] The invention relates to the technical field of installation of electric transmission towers, in particular to a pile foundation of electric transmission towers with adjustable anti-drawing and anti-extrusion properties. Background technique [0002] The pile foundation of the transmission tower is an important part of the transmission line, and its function is to transfer the force of the transmission tower to the pile foundation of the transmission tower smoothly and smoothly into the foundation. The pile foundation of the transmission tower is a concrete pile with pre-embedded fasteners (usually anchor bolts are used as fasteners). The lower end of the transmission tower is provided with multiple legs, and each leg is fixed to the concrete pile by a fastener. To realize the installation of each outrigger and the pile foundation of the transmission tower. [0003] On the entire transmission line, there are often turning positions. For the transmiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42E02D27/12E02D31/00
CPCE02D27/42E02D27/12E02D31/00
Inventor 陈相家何春晖姜利军张彩红孙启刚杨夯孙永鑫谭晓哲刘振国王龙何树生马力李倩
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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