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考虑节点半刚性影响的预压装配式PC框架内力分析

, PP. 96-102

Keywords: 预压装配式框架,半刚性节点,梁端弯矩,相对转动刚度

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Abstract:

考虑节点半刚性的影响下,建立了预压装配式预应力混凝土框架在竖向荷载作用下的内力分析模型,采用螺旋弹簧模拟节点连接的半刚性,导出了梁端节点相对转动刚度K不同时的杆件单元刚度矩阵,并对试验框架进行了受力验算。研究表明,在节点半刚性的影响下,预压装配式PC框架梁端弯矩有所降低,较按节点刚接计算,框架受力更接近于实际状态,与试验值吻合较好。

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