Slidably deforming node device for transmission tower in mining subsidence area and design method of such slidably deforming node device

A transmission tower, sliding deformation technology, applied in design optimization/simulation, tower, calculation, etc., can solve problems such as low material utilization, affecting safe operation, and affecting the bearing capacity of the entire tower

Active Publication Date: 2017-05-31
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stress concentration is the main cause of node tearing, and its failure form is brittle failure, which will lead to low utilization of the material itself
After l

Method used

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  • Slidably deforming node device for transmission tower in mining subsidence area and design method of such slidably deforming node device
  • Slidably deforming node device for transmission tower in mining subsidence area and design method of such slidably deforming node device
  • Slidably deforming node device for transmission tower in mining subsidence area and design method of such slidably deforming node device

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with accompanying drawing.

[0032] Such as Figure 1 to Figure 7 As shown, a slidable deformation node device for a power transmission tower in a mining area, including a gusset plate 2, a main material 1 extending longitudinally, an oblique material 3 extending obliquely downward from left to right, a slidable rod 4 and a pair of connecting Rod 5, the left part of the gusset plate 2 is fixedly connected to the middle part of the main material 1 through a plurality of connecting bolts 7, and a connecting arm 9 extending to the right extends from the upper right part of the gusset plate 2, and the gusset plate 2 The lower part of the right part is fixedly connected with the upper end of the oblique material 3, the left part of the slidable rod 4 is provided with a transversely extending oblong hole slideway 8, and the left parts of a pair of connecting rods 5 are located at the connecting rods 5 respec...

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Abstract

The invention discloses a slidably deforming node device for a transmission tower in a mining subsidence area and a design method of such slidably deforming node device. The slidably deforming node device is characterized in that a connecting arm extends out of the upper right of a node plate, an oblong hole slideway is arranged on the left portion of a slidable rod piece, the left portions of a pair of connecting rod pieces are positioned in front of and behind the connecting arm respectively and are connected through connecting bolts while the right portions thereof are positioned in front of and behind the left portion of the slidable rod piece respectively and are fixedly connected with connecting bolts passing through the oblong hole slideway, and a slider is arranged between each two adjacent connecting bolts in the oblong hole slideway. The design method includes establishing a finite element calculation model; determining a displacement mode and displacement of a tower pedestal; calculating a maximum axial force value of the slidable rod piece at a node position under various upper load conditions; obtaining a design value of maximum pressure borne by the slidable rod piece at the node position. The slidably deforming node device is capable of improving integral structure deformation capability. The design method is capable of designing anti-deformation structures meeting engineering practice requirements.

Description

technical field [0001] The invention relates to the technical field of iron tower construction of power transmission lines, in particular to a device and a design method for a slidable deformation node of a power transmission tower in a mining area. Background technique [0002] With the increase of our country's energy demand, coal-based mineral mining and cross-regional power transmission projects are imperative, so power transmission projects across gobs will be inevitable, so the protection of power transmission structures in mining areas It is of great significance to study and ensure the safety and reliability of the transmission tower structure and the safe operation of the transmission line in the coal mine goaf. [0003] For the power transmission tower in the goaf, after the surface deformation occurs, the tower rods will generate greater stress, and corresponding strain will be generated to balance the deformation. On the other hand, since the tower mostly adopts...

Claims

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Application Information

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IPC IPC(8): E04H12/08E04H12/18G06F17/50
CPCE04H12/08E04H12/18G06F30/20
Inventor 舒前进邵华孙钰昊仲崇硕武健锋李康王莉梁天乐徐圣楠黄潇华刘鲁杰庞豪磊王腾焱袁广林李庆涛
Owner CHINA UNIV OF MINING & TECH
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