- 摘 要
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（1 合肥工業(yè)大學(xué)土木與水利工程學(xué)院， 合肥 230009； 2 東南大學(xué)土木工程學(xué)院， 南京 210018）
［摘要］大型城市雕塑屬于空間異型復(fù)雜結(jié)構(gòu)，需采用專門的有限元軟件對其進(jìn)行受力分析。以“濰水之靈”鋼結(jié)構(gòu)雕塑工程為例，采用SAP2000軟件對其進(jìn)行詳細(xì)的分析和計算。結(jié)果表明，該結(jié)構(gòu)的振型及動力特性相當(dāng)復(fù)雜，其基底以受剪為主，且扭轉(zhuǎn)效應(yīng)十分嚴(yán)重，需考慮雙向地震作用及高階振型的影響；同時通過屈曲穩(wěn)定分析可知，該結(jié)構(gòu)具有足夠的屈曲安全系數(shù)，而且無論在彈性或塑性階段，P-Δ效應(yīng)都會隨豎向及側(cè)向荷載的增大而越來越明顯，結(jié)構(gòu)也越易失穩(wěn)破壞。還對雕塑進(jìn)行了構(gòu)件驗算及相應(yīng)節(jié)點設(shè)計，闡述此類特種建筑的設(shè)計難點，供同類結(jié)構(gòu)設(shè)計參考。
［關(guān)鍵詞］大型鋼結(jié)構(gòu)雕塑； 模態(tài)分析； 反應(yīng)譜分析； 屈曲分析； P-Δ效應(yīng)； 節(jié)點
中圖分類號：TU391文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)15-0014-05
Design and analysis of a large steel structure sculpture
Chen Daozheng1, Wan Zihao1, Fan Shenggang2
(1 Civil and Hydraulic Engineering，Hefei University of Technology, Hefei 230009, China; 2 Institute of Civil Engineering, Southeast University, Nanjing 210018, China)
Abstract:Large urban sculptures are spatially heterogeneous complex structures that require specialized finite element software to analyze the force. Taking the “WeiHe Water Spirit” steel structure sculpture project as an example, detailed analysis and calculations were performed using SAP2000 software. The results show that the vibration mode and dynamic characteristics of the structure are rather complex. The base is mainly sheared, and the torsion effect is very serious. It is necessary to consider the effects of two-way seismic action and high-order vibration modes. At the same time, through the buckling stability analysis, the structure has enough buckling safety factor, and P-Δ effect is more and more obvious with the increase of the vertical and lateral loads whether in the elastic or plastic stage, and the structure is also easier to destabilize and destroy. The component checking and corresponding node design of the sculpture were also conducted, and the design difficulties of this type of special building were elaborated to provide reference for similar structural design.
Keywords:large steel structure sculpture; modal analysis; response spectrum analysis; bucking analysis; P-Δ effect; node
作者簡介：陳道政，博士，教授，一級注冊結(jié)構(gòu)工程師，Email: cdztai@163.com。
