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大跨钢⁃混凝土组合梁斜拉桥施工阶段受力性能分析 被引量:4
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作者 田引安 《建筑结构》 CSCD 北大核心 2022年第12期121-126,共6页
为了研究大跨钢⁃混凝土组合梁斜拉桥在施工过程中主梁与主塔的内力及位移变化规律,以江西药都大桥为例,采用ANSYS软件建立三维精细化有限元模型,对此钢⁃混凝土组合梁斜拉桥进行了施工过程数值分析。计算结果表明:在主桥最大单悬臂状态... 为了研究大跨钢⁃混凝土组合梁斜拉桥在施工过程中主梁与主塔的内力及位移变化规律,以江西药都大桥为例,采用ANSYS软件建立三维精细化有限元模型,对此钢⁃混凝土组合梁斜拉桥进行了施工过程数值分析。计算结果表明:在主桥最大单悬臂状态、合龙和桥面铺装后,主梁与主塔的应力、变形均满足相关规范要求。考虑斜拉索自重影响,通过Ernst公式对斜拉索的弹性模量进行修正,分析了几何非线性对结构内力和变形的影响。分析结果表明:随着斜拉索长度的不断变长,垂度效应越来越明显,尤其跨中斜拉索之间的主梁弯矩受到的影响较大,施工到桥合龙阶段,相对考虑垂度效应,不考虑垂度效应时,塔根部主梁弯矩减小1.6%;结构大位移及P⁃δ效应对主梁跨中挠度影响不超过4%。 展开更多
关键词 大跨钢⁃混凝土组合梁斜拉桥 施工过程 悬臂拼装 垂度效应 位移效应 荷载⁃位移效应
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The Continuum Analytical Method of Steel Frame- Reinforced Concrete Shear Wall Mixed Structure
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作者 Jian Liu Xiangyun Huang +2 位作者 Guangen Zhou Jiping Hao Zenglin Xing 《Journal of Civil Engineering and Architecture》 2011年第4期368-374,共7页
The inter-story drift stiffness considered the semirigidity of beam and column joints connection, and P-Delta second order effect of steel frame parts in the mixed structure is presented in the paper. After considerin... The inter-story drift stiffness considered the semirigidity of beam and column joints connection, and P-Delta second order effect of steel frame parts in the mixed structure is presented in the paper. After considering on the influence of semirigidity between steel beams and steel columns, second order effect of beam-column members for steel frame and structural second order effect, the traditional continuum analytial method used in RC shear-frames wall structure is developed to steel frames-reinforced concrete shear wall mixed structure subject to horizontal load in this paper. A continuum approach, which is suitable for analyzing steel frames-reinforced concrete shear wall mixed structure subject to horizontal load, is presented. The method is relatively simple and more practical. It will be referred to structural design for steel frames-reinforced concrete shear wall mixed structure. 展开更多
关键词 Steel frames-reinforced concrete wall mixed structure continuum analytial approach inter-story drift stiffness semirigid connection second order effect.
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