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（1 中國電力科學(xué)研究院有限公司， 北京 100192； 2 國家電網(wǎng)有限公司， 北京 100031；3 國網(wǎng)浙江省電力有限公司，  杭州 310007； 4 山西省電力勘測設(shè)計(jì)院， 太原 030000）

［摘要］通過輸電鐵塔的塔架試驗(yàn)，對十字組合角鋼主材與塔身正側(cè)面斜材的兩種連接形式進(jìn)行了試驗(yàn)研究，對組合角鋼主材應(yīng)變進(jìn)行測量，在此基礎(chǔ)上對十字組合角鋼軸力、穩(wěn)定承載力及主材受力不均勻性進(jìn)行了分析，結(jié)果表明：在相同的外荷載作用下，傳統(tǒng)連接形式的塔架加載至設(shè)計(jì)荷載110%時(shí)，主材發(fā)生失穩(wěn)破壞，新型連接形式的塔架加載至設(shè)計(jì)荷載的115%時(shí)，主材發(fā)生失穩(wěn)破壞；新型連接形式的十字組合角鋼兩肢的受力均勻性優(yōu)于傳統(tǒng)連接形式的十字組合角鋼；考慮填板布置形式的十字組合角鋼穩(wěn)定承載力計(jì)算方法與試驗(yàn)結(jié)果吻合較好，計(jì)算方法合理。

［關(guān)鍵詞］輸電鐵塔； 十字組合角鋼構(gòu)件； 主斜材連接方法； 受力不均勻性； 試驗(yàn)研究

中圖分類號：TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號：1002-848X(2019)16-0091-06

Experiment on connection form between leg members of cruciform angle section members and diagonal members in transmission towers

Han Junke1, Li Feng2, Lin He3, Su Zhigang1, Wang Changzhi1, Yang Bin4

（1 China Electric Power Research Institute, Beijing 100192, China; 2 State Grid Corporation of China,  

Beijing 100031, China;  3 Zhejiang Electric Power Corporation, Hangzhou 310007, China; 4 Shanxi Electric Survey and Design  Institute, Taiyuan 030000, China）

Abstract:Through the test of the transmission tower frame, experimental study was conducted for the two connecting forms between cruciform angle section leg members and diagonal members of tower body and the strain of cruciform angle section leg member was measured. On this basis, the axial force of cruciform angle section member, stability bearing capacity and the stress non-uniform of the limb angle members were carried out. The results show that, under the same applied load, when the tower frame of traditional connection form was loaded to 110% of the design load, the cruciform angle section leg member occured instability failure; when the tower frame of new connection form was loaded to 115% of the design load, the cruciform angle section leg member occured instability failure. The uniformity of the force of the cruciform angle steel of the new connection form is better than that of the traditional connection form of the cruciform angle steel; the calculation method of the stable bearing capacity of the cruciform angle steel considering the form of the filler plate is in good agreement with the experimental results, and the calculation method is reasonable.

Keywords:transmission tower; cruciform angle section member; connection form between leg member and diagonal member; stress non-uniform; experimental study