- 摘 要
-
(1 國網(wǎng)河南省電力公司經(jīng)濟(jì)技術(shù)研究院, 鄭州 450052;2 中國電力科學(xué)研究院有限公司, 北京 100192)
摘要: 共享輸電塔依靠抗滑移連接件將通訊設(shè)施與電力設(shè)施結(jié)合,而輸電塔在設(shè)計(jì)之初并未考慮這種方案。 因此,有必要進(jìn)一步明確掛載對輸電塔性能的影響。 為分析不同掛載位置對輸電塔整體承載性能的影響,在輸電塔中選取子結(jié)構(gòu),并以掛載位置為變化參數(shù)進(jìn)行了單調(diào)擬靜力試驗(yàn)。 結(jié)果表明:不掛載時(shí),主材的破壞模式為彎扭失穩(wěn),在掛載作用下主材破壞模式均呈現(xiàn)為彎曲失穩(wěn)。 豎向掛載與側(cè)向掛載的聯(lián)合作用對子結(jié)構(gòu)整體的承載力有所削弱,輔材對主材的支撐作用是不可忽略的。 基于掛載對試件承載力的削弱程度,建議在掛載時(shí)使用相鄰節(jié)間掛載。
關(guān)鍵詞: 共享輸電塔; 掛載位置; 承載性能; 單調(diào)擬靜力試驗(yàn); 抗滑移連接件
中圖分類號:TU391 文獻(xiàn)標(biāo)志碼:A 文章編號:1002?848X(2022)14?0065?07
DOI:10?? 19701 / j?? jzjg?? LS210139
Experimental study on substructure performance of transmission tower under different mounting positions
LIU Xiangli1, DONG Yuming2, FANG Zhenggang2, LIU Rui2, ZHAO Weibo2
(1 State Grid Henan Economic Research Institute, Zhengzhou 450052, China;2 China Electric Power Research Institute, Beijing 100192, China)
Abstract: The shared transmission tower relies on anti sliding connectors to combine communication facilities with power facilities. However, this scheme was not considered at the beginning of the design of the transmission tower, so it is necessary to study the influence of mounting on the performance of the transmission tower. In order to analyze the influence of different mounting positions on the overall bearing capacity of transmission tower, the substructure was selected in the transmission tower, and the monotonic quasi?static test was carried out with the mounting position as the variable parameter. The results show that the failure mode of the main material is bending and torsion instability when it is not attached, and the failure mode of the main material is bending instability when it is attached; the combined action of vertical and lateral loading weakens the overall bearing capacity of the substructure; the supporting effect of auxiliary materials on the main material can not be ignored. Based on the degree of weakening of the bearing capacity of the specimen by the mountings, it is recommended to use adjacent inter?sectional mountings in the mountings.
Keywords: shared transmission tower; mounting position; bearing capacity; monotonic quasi?static test; antisliding connector
∗國家電網(wǎng)有限公司總部科技項(xiàng)目資助(5217L0190009)。第一作者:劉湘蒞,碩士,教授級高級工程師,長期從事輸變電工程設(shè)計(jì)和科技研究工作,Email:liuxiang8588@ sohu. com。通信作者:房正剛,碩士,高級工程師,主要從事輸電線路結(jié)構(gòu)及桿塔通用設(shè)計(jì)研究工作,Email:mexie1204@ 163. com。[引用本文] 劉湘蒞,董玉明,房正剛,等. 不同掛載位置下輸電塔子結(jié)構(gòu)性能試驗(yàn)研究[ J]. 建筑結(jié)構(gòu),2022,52(14):65?71. LIU Xiangli,DONG Yuming,FANG Zhenggang,et al. Experimental study on substructure performance oftransmission tower under different mounting positions[J]. Building Structure,2022,52(14):65?71.
- 下載地址
-