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(深圳華森建筑與工程設(shè)計(jì)顧問有限公司 518054)
［提要］ 結(jié)合某工程鋼結(jié)構(gòu)螺旋樓梯的工程實(shí)例，簡要介紹了利用空間管桁架進(jìn)行螺旋樓梯的設(shè)計(jì)和計(jì)算方法?？紤]了幾何非線性，采用ANSYS和SAP2000進(jìn)行了結(jié)構(gòu)計(jì)算分析，提出了空間管桁架螺旋樓梯的設(shè)計(jì)要點(diǎn)。通過進(jìn)行靜力、地震分析和設(shè)計(jì)實(shí)踐說明了采用空間管桁架的結(jié)構(gòu)形式是可行的，結(jié)構(gòu)具有很大的抗側(cè)剛度和抗扭剛度。
［關(guān)鍵詞］ 鋼結(jié)構(gòu) 螺旋樓梯 空間管桁架 幾何非線性
Discussion on the Design of Steel Space Truss Structure of Spiral Stair/Cao Weiliang,Ba Guijiang,Liu Weiya (Shenzhen Huasen Architecture & Engineering Deign Consultants Co.,Ltd.,Shenzhen 518054,China)
Abstract:Based on the spiralstair in a project,the design and calculation method for the spacetruss applied in the spiralstair are introduced.The finite element analysis is done with the software of ANSYS and SAP2000,considering the geometry nonlinearity.According to the analysis results,some keys of design for spacetruss spiralstair are put forward.It is indicated that the spacetruss are feasible to be applied to the spiral truss and the spacetruss structure has large flexural stiffness and torsional stiffness,by the static and seismic analysis and engineering practice.
Keywords:steel structure; spiral stair; space truss; geometric nonlinearity