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钢管砼偏心受压构件的徐变分析

Journal of Chongqing Jiaotong University(Natural Science)(2007)

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Abstract
钢管砼结构徐变由于物理状况上封闭、干硬性、养生时不浇水,受力上卸载而低于普通砼的徐变,由于徐变导致的钢管和砼的应力[1]重分布十分明显而不可忽视,为了有效计算核心砼徐变导致的重分布应力,在推导轴心受压构件徐变公式的基础上,结合大小偏心受压构件的受力特点,偏安全地考虑最大纤维处的徐变,根据弹性理论及叠加原理推导了钢管砼构件徐变系数的一般计算公式,并测试了轴心受压和偏心受压结构的徐变应变和收缩应变,经比较,徐变计算比较吻合,验证了理论分析.
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Key words
test research,creep-shrinkage effect,stress redistribution,theoretical analysis,CFST
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