强风区双柱悬索拉线塔塔线体系风振响应及可靠度研究

UHV (Ultra High Voltage) transmission line is so long and to cross various kinds of terrain. To realize the wind vibration response and reliability of the double column suspended cable guyed tower (DCSCGT) , in the strong wind district, is basicly to insure structural system saftey. This project propose to collect wind tunnel experiment, numerical modeling and theoretical analysis , in order to study on wind vibration response and reliability of the DCSCGT, in the strong wind district. Take advantage of commonality website to collect wind speed and wind direction observatrion datas in the long-term, and can study on the probability distribution chatrcter of wind speed and wind direction. Through numerical modeling to build noninear analysis modle of tower line system, study on the random wind vibration response charateristics of the DCSCGT. So to contrast test result of wind tunnel experiment. As to find structrue redundancy rate as the important index of construction member, to bulid relevance relationship, in construction member importance and sturcture redundancy rate. Use the adopt artificial neural network to calculate the reliabiliby of DCSCGT.

特高压输电线路长，需穿越各种复杂地形。了解和把握双柱悬索拉线塔戈壁大风地区风振响应和风振可靠度，是确保结构体系安全的基本要求。本项目拟采用风洞实验、数值模拟和理论分析相结合的方法，对戈壁大风区双柱悬索拉线塔塔线体系风振响应及可靠度进行深入研究。利用公共网站上收集到的戈壁大风区的风速风向的长期观测数据，研究戈壁大风区的风速风向概率分布特性。通过数值模拟建立塔线体系的非线性分析模型，研究双柱悬索拉线塔塔线体系随机风振响应特性，并与风洞试验结果进行对比。以结构冗余度作为衡量构件重要性的指标并提出其量化模型，建立构件的重要性应与结构的冗余度之间的相关关系。采用人工神经网络进行双柱悬索拉线塔塔线体系的可靠度计算。

特高压输电线路长，需穿越各种复杂地形。了解和把握双柱悬索拉线塔戈壁大风地区风振响应和风振可靠度，是确保结构体系安全的基本要求。本项目采用风洞实验、数值模拟和理论分析相结合的方法，对戈壁大风区双柱悬索拉线塔塔线体系风振响应及可靠度进行深入研究。利用公共网站上收集到的戈壁大风区的风速风向的长期观测数据，研究戈壁大风区的风速风向概率分布特性。通过数值模拟建立塔线体系的非线性分析模型，研究双柱悬索拉线塔塔线体系随机风振响应特性，并与风洞试验结果进行对比。