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A Calculation Method for Design Thickness of Twelve-Anchor Bolt Tower Foot Plate

An anchor bolt and calculation method technology, which is applied in the field of power transmission, can solve the problem of uneven force on anchor bolts, and achieve the effect of reasonable calculation method, reliable calculation results, and filling in the blank of regulations and specifications.

Active Publication Date: 2021-04-16
CEEC JIANGSU ELECTRIC POWER DESIGN INST +1
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  • Abstract
  • Description
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for calculating the design thickness of the 12-bolt tower foot slab, which can meet the design requirements of the 12-bolt tower foot slab and solve the problem of insufficient force on the anchor bolts. Average technical issues

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  • A Calculation Method for Design Thickness of Twelve-Anchor Bolt Tower Foot Plate
  • A Calculation Method for Design Thickness of Twelve-Anchor Bolt Tower Foot Plate
  • A Calculation Method for Design Thickness of Twelve-Anchor Bolt Tower Foot Plate

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0048] Such as figure 1 Shown is a schematic diagram of the tower foot plate structure with twelve anchor bolts. The tower foot plate is biaxially symmetrical. On the symmetrical axis, the tower foot plate is welded to the shoe plate. The main material angle steel and the shoe plate are connected by anchor bolts, and are arranged symmetrically about the center of the tower foot plate. The shortest distance from the center of the bolt hole to the shoe plate is S1, the shortest distance from the center of the bolt hole to the floor plate is S2, the shortest distance from the center of the bolt hole to the edge of the foot plate is S3, and the minimum width of the foot plate is B=2S1+4S2+2S3.

[0...

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Abstract

The invention discloses a method for calculating the design thickness of a 12-bolt tower foot slab, comprising: determining the diameter of the anchor bolt according to the uplift force on the tower foot slab; calculating the minimum width of the tower foot slab according to the structural requirements according to the diameter of the anchor bolt; The uplift force distribution coefficient of the bolt holes calculates the uplift force of each anchor bolt, and verifies whether the strength of each anchor bolt meets the force requirements: if the force requirements are met, increase the grade of the anchor bolts and re-according to the structure It is required to calculate the minimum width of the tower foot plate; if the force requirement is not met, further calculate the minimum thickness t required for the tower foot plate under tension la ;Calculate the minimum thickness t required for the foot plate under compression ya , choose t ya and t la The greater value of the two is taken as the design thickness t of the tower foot plate. The present invention considers the influence of uneven force on the foundation bolts and the influence of stress concentration near the bolt holes, and truly reflects the force mechanism of the tower foot plate.

Description

technical field [0001] The invention relates to a method for calculating the design thickness of a 12-bolt tower foot plate, which belongs to the technical field of power transmission. Background technique [0002] The tower foot plate is an important component of the connection between the tower legs and the foundation of the self-supporting iron tower of the overhead transmission line, and is responsible for transmitting the force of the tower foundation to the foundation and foundation. [0003] With the successive construction of UHV AC-DC transmission line projects and other voltage level multi-circuit overhead transmission line projects, the transmission tower tends to be larger, and it is often necessary to use twelve anchor bolts to meet the force requirements. [0004] "Technical Regulations on the Design of Tower Structures for Overhead Transmission Lines" (DL / T 5154-2012) gives the calculation method for the tower foot plate with four and eight anchor bolts, but d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/23G06F119/14
CPCG06F30/20G06F30/23G06F2119/06
Inventor 余亮吕健刘欣良蔡建国陶青松赵建吴森坤龙海波马君瑞谈磊汤鹏李布辉杨云李宁郭昊周昊战龙龙
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST
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