- 摘 要
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（1 國網(wǎng)輸電線路舞動(dòng)防治技術(shù)重點(diǎn)實(shí)驗(yàn)室（國網(wǎng)河南省電力公司電力科學(xué)研究院）， 鄭州 450052；2 鄭州大學(xué)土木工程學(xué)院， 鄭州 450001）
［摘要］采用蒙特卡羅方法與響應(yīng)面法相結(jié)合的方法，分析了三種常見鋼結(jié)構(gòu)變電構(gòu)架在設(shè)計(jì)荷載作用下的承載力可靠度。結(jié)果表明：在設(shè)計(jì)荷載作用下，三種變電構(gòu)架承載能力的可靠度均隨著構(gòu)件損傷程度的增大而降低。當(dāng)構(gòu)件損傷程度較輕時(shí)，整個(gè)變電構(gòu)架的結(jié)構(gòu)可靠度并不明顯降低，此時(shí)整個(gè)結(jié)構(gòu)仍具有良好的工作性能；隨著構(gòu)件損傷程度的增大，結(jié)構(gòu)的可靠概率明顯降低，結(jié)構(gòu)很快就變得不可靠，此時(shí)須立即修復(fù)或更換受損構(gòu)件，以保證變電構(gòu)架結(jié)構(gòu)整體的安全性。
［關(guān)鍵詞］變電構(gòu)架； 凹陷損傷； 極限承載力； 概率靈敏度； 可靠度分析
中圖分類號：TU279-7+44文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)17-0118-05
Reliability analysis of bearing capacity of dent-damaged substation structures based on the united arithmetic method
Lü Zhongbin1, Zhang Meng2
(1 State Grid Key Laboratory of Transmission Line Galloping Control Technology (State Grid Henan Electric Power Corporation Electric Power Research Institute)，Zhengzhou 450052, China; 2 School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China)
Abstract:The united arithmetic method of Monte Carlo method and response surface method were adopted to compute the reliability of steel substation structures under the design loads. The results show that the reliability of the bearing capacity of the three kinds of substation structures decrease with the increase of dent-damage degree. However, minor dent-damage of the members can hardly reduce the structure′s reliability, and the structure has well working performance. Serious dent-damage degree of the members reduces the reliability probability of the structure obviously, and the structure will soon become unreliable, and the damaged members must be repaired or replaced immediately to ensure the safety of the whole substation structure.
Keywords:substation structure; dent-damage; ultimate bearing capacity; probabilistic sensitivity; reliability analysis
*中國博士后科學(xué)基金資助項(xiàng)目（20090450935），國網(wǎng)河南省電力公司科技專項(xiàng)（2016-01-06）。
作者簡介：呂中賓，碩士，教授級高級工程師，Email: gylzb@qq.com。
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