基于性能的輸電塔線體系風災易損性分析
[Abstract]:With the development of China's economy, the demand for energy is increasing. However, the distribution pattern of energy in China is very unbalanced. In order to break through the contradiction between supply and demand, a series of transmission lines have been planned and constructed. As an important part of the lifeline project, once the transmission line is destroyed, it will lead to the paralysis of power supply system and a series of secondary disasters. The consequences are extremely serious, so it should strengthen its ability to resist natural disasters. Theoretical analysis and post-disaster investigation show that wind disaster is the most important factor causing line damage. How to ensure that the line still has good working performance under strong wind load has become a hot research topic. Based on this, from the point of view of performance-based design, this paper takes the tower line coupling system of a transmission line as the research object, and analyzes its vulnerability to wind disaster. The main research work is as follows: 1, the harmonic synthesis method is used to simulate the pulsating wind. The characteristics of mean wind and pulsating wind are described respectively. Based on Kaimal wind spectrum, the MATLAB program of pulsating wind simulation is compiled, and the influence of spatial correlation is considered. Taking a transmission wire as an example, the nodal pulsating wind history is simulated, and the simulation spectrum and target spectrum are compared to verify the correctness of pulsating wind simulation. The uncertainty of material parameters is considered. The three-tower and four-span tower line model is established by using the finite element software ANSYS. The wind vibration time history analysis of the tower line system is carried out and the displacement time history response curve of the tower top is obtained. The influence of wind direction angle on the structure is investigated and the maximum angular displacement of 90 wind attack is obtained. Ten samples were collected by Latin hypercube sampling method, and the displacement response of each sample at 90 attack angles under different wind speeds was obtained by finite element method. The performance level of transmission tower under wind load was analyzed and quantified. The performance level of the transmission tower corresponding to three failure modes is defined. Then the wind resistance curve of the transmission tower is obtained by Pushover analysis, and the test results are combined. The limit value. 4 corresponding to different performance level is found on the curve. The vulnerability function of wind disaster probability is proposed. The corresponding mean value and standard deviation are obtained by regression analysis of the discrete points calculated from 10 samples, and the vulnerability curve is drawn.
【學位授予單位】:華中科技大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:TM75;TU312.1
【參考文獻】
相關期刊論文 前10條
1 謝麗宇;唐玨;謝強;薛松濤;仲誠;;基于性能的輸電塔地震易損性分析[J];特種結構;2014年01期
2 陸宇燁;張健釗;錢臻;馬嵩陽;;自然災害對中國電力系統(tǒng)的影響[J];電子科技;2014年02期
3 俞登科;李正良;韓楓;汪之松;;基于性能目標的特高壓輸電塔抗風可靠度分析[J];防災減災工程學報;2013年06期
4 袁波;曾明會;李霞昭;;基于FFT技術對脈動風的計算機模擬及其Matlab的實現[J];四川建筑科學研究;2013年05期
5 趙明偉;顧明;;輕型鋼結構風災易損性概率分析[J];中南大學學報(自然科學版);2012年09期
6 孫瑛;林斌;武岳;孫曉穎;;脈動風場數值模擬的POD-諧波合成法[J];哈爾濱工業(yè)大學學報;2011年12期
7 謝華平;何敏娟;;輸電塔塔線體系風振響應分析[J];振動與沖擊;2011年07期
8 李黎;尹鵬;王開明;梁峰;;不同風向角動風下大跨越輸電塔風振響應分析[J];武漢理工大學學報;2009年23期
9 朱玉華;黃海榮;胥玉祥;;基于性能的抗震設計研究綜述[J];結構工程師;2009年05期
10 李春祥;李錦華;于志強;;輸電塔線體系抗風設計理論與發(fā)展[J];振動與沖擊;2009年10期
相關博士學位論文 前2條
1 韓楓;特高壓輸電塔線體系的抗風可靠度研究[D];重慶大學;2012年
2 尹鵬;大跨越輸電塔—線體系動力特性和風振控制研究[D];華中科技大學;2009年
相關碩士學位論文 前9條
1 張艷艷;滑坡災害下輸電塔易損性評估模型研究[D];重慶大學;2014年
2 文武;大型風力機塔架在紊流風場下的易損性分析[D];廣東工業(yè)大學;2013年
3 陳家豪;輸電塔塔—線體系風振研究[D];廣西大學;2013年
4 鄭成龍;基于原型試驗的輸電塔彈塑性失效分析[D];華中科技大學;2013年
5 趙煜哲;輸電線路脫冰動力響應數值仿真研究[D];華中科技大學;2013年
6 邢月龍;500kV同塔多回輸電塔的風荷載研究[D];浙江大學;2012年
7 姜維;連續(xù)梁橋的地震易損性分析[D];華中科技大學;2012年
8 朱斌;拉線式貓頭輸電塔線體系風振響應及風振控制研究[D];蘇州大學;2011年
9 常澤民;鋼筋混凝土結構非線性抗震可靠度及地震易損性分析[D];哈爾濱工業(yè)大學;2006年
,本文編號:2195990
本文鏈接:http://www.sikaile.net/kejilunwen/dianlilw/2195990.html