论文总字数：15545字

摘 要

由于输电线路施工环境复杂，不具备大型机械设备进场施工的条件，但是内悬浮外拉线抱杆可以拆分再组装，吊重也比较大，并且发展技术成熟，安全系数较好、经济效益高，铁塔主材受力较均衡，易于保证安装质量等特点，因此被广泛运用。

随着经济发展和科技进步，用电量大大提高，输电距离和铁塔高度要求不断提高，这就要求输电线路的同步发展。抱杆在铁塔组建中起到至关重要的作用，因此对抱杆的研究也需要不断进行。

目前，由于输电线路工程要求不断提高，内悬浮抱杆的设计与优化显得尤为重要。本文完成BG550抱杆的受力分析、横截面几何性质、长细比、整体稳定计算和强度验算，选取适合的钢丝绳和钢材；运用ABAQUS对关键受力节点分析，分析节点强度是否满足设计要求；运用ANSYS开展风振响应研究，对抱杆进行设计优化，验证抱杆的强度、安全和稳定性。

关键词：高压输电 受力分析 销轴结点 风振响应

Design and Optimization of Suspension Buckle in 550*550 mm

Transmission Line Project

Abstract

Because the transmission line construction environment is complex, does not have the large-scale machinery equipment to enter the field construction condition, but the inside suspension outside pulls the line to hold the pole to be able to split and reassemble, the lifting weight is also relatively big, and the development technology is mature, the safety factor is good, the economic benefit is high, the tower main material force is more balanced, easy to guarantee the installation quality and so on characteristic, therefore is widely used.

With the development of economy and science and technology, the electricity consumption is greatly increased, and the transmission distance and tower height are constantly increased, which requires the synchronous development of transmission lines. The pole holding plays an important role in the construction of iron tower, so the research of pole holding also needs to be carried out continuously.

At present, the design and optimization of internal suspension pole is particularly important because of the continuous improvement of transmission line engineering requirements. This paper completes the force analysis, cross-section geometric properties, aspect ratio, overall stability calculation and strength checking calculation of the BG550 holding rod, selects suitable wire rope and steel; uses the ABAQUS to analyze the key stress nodes to analyze whether the strength of the joints meets the design requirements; uses the ANSYS to carry out wind vibration response research to optimize the design of the holding rod to verify the strength, safety and stability of the holding rod.

Key Words: High voltage transmission； Stress analysis； Pin node； Wind Vibration Response

目 录

摘要………………………………………………………………………………Ⅰ

Abstract …………………………………………………………………………Ⅱ

0引言 ………………………………………………………………………………1

第一章 抱杆简介…………………………………………………………………2

1.1 主要用途………………………………………………………………………2

1.2 基本组成………………………………………………………………………3

1.3 技术参数………………………………………………………………………4

1.4 使用要求………………………………………………………………………4

第二章 计算分析…………………………………………………………………6

2.1 结构计算………………………………………………………………………6

2.1.1 控制绳受力计算…………………………………………………………7

2.1.2 起吊滑车组及起吊绳合力计算…………………………………………7

2.1.3 落地张力计算……………………………………………………………8

2.1.4 中心轴压计算 …………………………………………………………10

2.1.5 抱杆长细比计算 ………………………………………………………10

2.1.6 风压计算 ………………………………………………………………11

2.1.7 结构整体稳定性验算 …………………………………………………11

2.1.8 单肢稳定性验算 ………………………………………………………12

2.1.9 底部承托装置计算 ……………………………………………………13

2.1.10 刚度验算………………………………………………………………13

2.1.11 抱杆自重状态下应变计算……………………………………………14

2.2 起升机构计算 ………………………………………………………………15

2.3 结论 …………………………………………………………………………15

第三章 关键受力节点分析（销轴连接）…………………………………16

3.1 节点构造 ……………………………………………………………………16

3.2 节点设计 ……………………………………………………………………16

3.3 有限元分析 …………………………………………………………………17

3.4 结论 …………………………………………………………………………18

第四章 风振响应研究…………………………………………………………19

4.1 位移时程分析 ………………………………………………………………19

4.2 风振系数分析 ………………………………………………………………20

4.3 结论 …………………………………………………………………………21

参考文献 …………………………………………………………………………22

致谢………………………………………………………………………………24

0 引言

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