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    何青峰¹，申躍奎²，張  纓¹，汪  濤¹
    （1中煤西安設(shè)計(jì)工程有限責(zé)任公司，西安710054; 2西安建筑科技大學(xué)土木工程學(xué)院，西安710055）

[摘要] 結(jié)合一個(gè)端部懸挑的鋼結(jié)構(gòu)棧橋設(shè)計(jì)，進(jìn)行了棧橋桁架結(jié)構(gòu)不同布置方案比較、下弦水平支撐不同布置方案比較，找尋了最優(yōu)結(jié)構(gòu)方案。同時(shí)指出了一些不正確的認(rèn)識(shí)，供結(jié)構(gòu)設(shè)計(jì)人員參考。
[關(guān)鍵詞] 棧橋；門架；支撐；檁條設(shè)計(jì)；風(fēng)荷載

    Optimization design of a long-span coal-convey trestle with cantilever span
    He Qingfeng¹, Shen Yuekui², Zhang Ying¹, Wang Tao¹
    (1 China Coal Xi'an Designing&Engineering Co., Xi'an 710054, China; 2 Civil Engineering Department, Xi'an University of Architecture&Technology, Xi'an 710055, China)

Abstract: The paper focus on the comparison and optimization of a steel trestle structural scheme which was built with a cantilever end. Especially the choice of brace system and the plan of truss' web member were investigated. Meanwhile some misunderstanding concepts of steel structure were discussed, which can be consulted by the civil engineers.
Keywords: trestle; door-like frame; brace; purline design; wind load