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（1 中國(guó)電力科學(xué)研究院有限公司， 北京 100192；  2 武漢大學(xué)土木建筑工程學(xué)院， 武漢 430072；3 北方工程設(shè)計(jì)研究院有限公司， 石家莊 050011）

［摘要］輸電線路結(jié)構(gòu)系統(tǒng)可靠度在各子系統(tǒng)之間的合理分配，是輸電線路結(jié)構(gòu)系統(tǒng)可靠度研究的熱點(diǎn)問(wèn)題之一。根據(jù)某±800kV同塔雙回路輸電線路的工程實(shí)例，在對(duì)輸電線路桿塔結(jié)構(gòu)及基礎(chǔ)可靠度進(jìn)行計(jì)算分析的基礎(chǔ)上，建立了輸電線路桿塔結(jié)構(gòu)、基礎(chǔ)的成本與相應(yīng)結(jié)構(gòu)可靠度之間的函數(shù)關(guān)系；基于經(jīng)濟(jì)指標(biāo)的約束條件，對(duì)輸電線路桿塔結(jié)構(gòu)及基礎(chǔ)系統(tǒng)可靠度的優(yōu)化分配進(jìn)行了計(jì)算分析。結(jié)果表明，該工程在滿足成本的約束條件下，桿塔結(jié)構(gòu)和基礎(chǔ)分配的可靠度可分別達(dá)到3.7和4.2以上，輸電線路桿塔結(jié)構(gòu)及基礎(chǔ)系統(tǒng)可靠度可達(dá)到3.7以上，滿足現(xiàn)行規(guī)范《工程結(jié)構(gòu)可靠性設(shè)計(jì)統(tǒng)一標(biāo)準(zhǔn)》（GB 50153—2008）規(guī)定的目標(biāo)可靠度的要求。

［關(guān)鍵詞］輸電線路；桿塔結(jié)構(gòu)；桿塔基礎(chǔ)；系統(tǒng)可靠度；優(yōu)化分配

中圖分類號(hào)：TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)07-0128-05

Optimal allocation for the system reliability of transmission line tower structure and foundation

WU Jing1, HAN Junke1, LI Maohua1, HAN Yuzhou2, ZHU Yilong3, AN Xuwen2, HOU Jianguo2

(1 China Electric Power Research Institute, Beijing 100192, China; 2 School of Civil Engineering, Wuhan University, Wuhan 430072, China; 3 North Engineering Design and Research Institute Co., Ltd., Shijiazhuang 050011, China)

Abstract:The reasonable distribution of the reliability of the transmission line structure system among the various subsystems was one of the hot issues in the study of the reliability of the transmission line structure system. According to an engineering example of a ±800kV double-circuit transmission line on the same tower, based on the calculation and analysis of the transmission line tower structure and foundation reliability, the function of the transmission line tower structure and foundation cost and the corresponding structural reliability was established. Based on the constraints of economic indicators, the optimization distribution of the transmission line tower structure and the reliability of the basic system was calculated and analyzed. The results show that the reliability of the tower structure and foundation distribution of the project can reach 3.7 and 4.2 or more under the cost constraints, and the reliability of the transmission line tower structure and the foundation system can reach 3.7 or more, which meet the requirements of target reliability stipulated in Unified standard for reliability design of engineering structures(GB 50153—2008).

Keywords:transmission line;tower structure;tower foundation;system reliability;optimal allocation

*國(guó)網(wǎng)公司科技項(xiàng)目資助（基于機(jī)械強(qiáng)度匹配理論的架空輸電線路設(shè)計(jì)方法研究（GCB17201700149）），國(guó)家自然科學(xué)基金項(xiàng)目資助（51508537）。

作者簡(jiǎn)介：吳靜，博士，高級(jí)工程師，Email: jeanwoobj@163.com；通信作者：安旭文，博士，副教授，Email:anxw@whu.edu.cn。