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（杭州中聯(lián)筑境建筑設(shè)計有限公司， 杭州 310011）
［摘要］首鋼滑雪大跳臺外形特異，結(jié)構(gòu)復(fù)雜，荷載較大，主體采用鋼桁架結(jié)構(gòu)。跳臺中部8根V型柱為重要構(gòu)件，采用屈曲分析計算其臨界力并反算柱的計算長度，從而較精確地對其強度進行驗算；跳臺屬于大跨空間結(jié)構(gòu)，采用ABAQUS軟件對結(jié)構(gòu)進行非線性有限元分析，以掌握其強度、穩(wěn)定及剛度等性能的整個變化過程，使結(jié)構(gòu)具有足夠的安全度；對于重要的節(jié)點，在滿足與構(gòu)件等強度連接的基礎(chǔ)上，采用ABAQUS及MIDAS Gen軟件對節(jié)點進行有限元計算，以驗算節(jié)點強度；通過可拆卸的連接，將固雪網(wǎng)與結(jié)構(gòu)本體有效地連接，既達到固雪作用，又沒有改變賽道表面平整，以便于大跳臺在冬奧會之后的利用。
［關(guān)鍵詞］首鋼滑雪大跳臺；V型柱設(shè)計；屈曲分析；極限承載力；復(fù)雜節(jié)點分析；固雪設(shè)計
中圖分類號：TU391文獻標識碼：A文章編號：1002-848X(2021)06-0074-05
Structural design and key points analysis of Big Air Shougang
YANG Wentao, WANG Xiangrong, WANG Chao, GUO Facheng
(CCTN Architectural Design Co., Ltd., Hangzhou 310011, China)
Abstract:Big Air Shougang has a special shape, complex structure and large load, and the main structure is steel truss structure. The eight V-shaped columns in the middle are important components, buckling analysis was used to calculate the critical force and back calculate the calculated length of the columns, so as to accurately check the strength of the columns. Big Air Shougang belongs to a long-span spatial structure, and ABAQUS software was used to carry out nonlinear finite element analysis of the structure, so as to master the whole change process of its strength, stability, stiffness and other properties, and make the structure have enough safety. For important nodes, ABAQUS and MIDAS Gen software are used to calculate the strength of nodes on the basis of meeting the same strength connection with members; through detachable connection, the snow fixing net was effectively connected with the structure, which not only achieves the snow fixing effect, but also does not change the track surface, so as to facilitate the use of Big Air Shougang after the Winter Olympic Games.
Keywords:Big Air Shougang;V-shaped column design;buckling analysis;ultimate bearing capacity;complex node analysis;snow fixation design
作者簡介：楊文濤，學(xué)士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email:wentao_yang2@acctn.com;通信作者：王向榮，學(xué)士，工程師，一級注冊結(jié)構(gòu)工程師，Email:xiangrong_wang@acctn.com。
