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Method for treating uneven settlement of iron tower leg in collapse area

A technology for subsidence area and tower, which is used in electrical digital data processing, special data processing applications, instruments, etc.

Pending Publication Date: 2018-12-18
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for the settlement of transmission towers, most of them are theoretical studies, and there is a lack of practical solutions for actual situations.

Method used

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  • Method for treating uneven settlement of iron tower leg in collapse area
  • Method for treating uneven settlement of iron tower leg in collapse area
  • Method for treating uneven settlement of iron tower leg in collapse area

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Such as figure 1 As shown, embodiment 1 provides a method for treating the uneven settlement of iron tower legs in the subsidence area, and the method comprises the following steps:

[0051] S1: Based on the tower leg with the smallest settlement, calculate the settlement of the four bases of the iron tower.

[0052]In step S1, use the Leica TS9R500 total station to measure the foundation settlement of the four independent foundations located at the foot of the iron tower in the subsidence area. The measured settlements of the four tower foundations of ABCD are a, b, c, d. The relative settlement method is adopted in the finite element simulation calculation, and the tower leg with the smallest settlement is taken as the reference point, that is, assuming that the settlement of leg A is the smallest value among the four tower legs, it is assumed that the settlement of leg A is 0, and the settlement of leg B, C, and D is assumed to be 0. The settlements of the legs are ...

Embodiment 2

[0087] Such as figure 1 As shown, Example 2 also provides another treatment method for the uneven settlement of iron tower legs in the subsidence area. On the basis of the method described in Example 1, step S7 is added, which calculates the optimal reinforcement structure by dichotomy Material selection and size.

[0088] 1) For steel structure reinforcement, adjust the size of the foundation reinforcement structure through the section shape and size settings in the section option in ansys. The overall stress level of the tower body is less than the design strength of the bar as the standard. If this standard is met, it is called Satisfy the stress condition.

[0089] First select a smaller size a for trial calculation, and then choose a larger size b for trial calculation. If the large size meets the conditions, the overall stress level of the tower body is less than the design strength of the bar, and the small size does not meet the conditions, then use two points The id...

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Abstract

A method for treating the uneven settlement of iron tower leg in collapse area includes such steps as calculating the settlement of four tow foundations of iron tower according to the tower leg with the smallest settlement, and calculating the settlement of the four tower foundations according to the settlement of the tower leg. S2: finite element model of iron tower is established by ANSYS software according to actual size; S3, restraining the rotational displacement and the horizontal displacement of all the tower legs, and calculating the position where the stress value in the finite element model is greater than or close to the design strength of the tower material; 4, adding a foundation reinforcement structure and reinforcing a reinforcement structure on that finite element model; 5,resetting the constraint setting of the foundation node of the pylon leg according to the settlement and the reinforcement; S6: calculating the force of the iron tower again, repeating step S4-S5, until the force on the tower is within the design range. Combined with the finite element model, considering the settlement and reinforcement materials, the method restrains the degree of freedom of thefour tower foundations, and realizes the reinforcement of transmission tower.

Description

technical field [0001] The invention belongs to the field of transmission tower maintenance, and in particular relates to a treatment method for uneven settlement of iron tower legs in a subsidence area. Background technique [0002] Power grid transmission tower is a kind of high-rise structure widely used. As an important power engineering facility, it has important economic and social significance to ensure the safe and reliable operation of the main structure system under various loads. [0003] The commonly used structural forms of transmission tower foundations include independent foundations, enlarged foundations, and pile foundations. The structural forms of transmission towers are mainly steel structures. Since the transmission tower is installed in the wild, it may encounter various geological conditions. The heavy transmission tower and the external climate influence are likely to cause deformation of the foundation of the transmission tower. Generally, the settle...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23G06F2119/06
Inventor 菅明健张华恺邓化凌张忠文杜宝帅张广成李华东张用陈阳李文
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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