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预应力混凝土简支梁徐变特性影响因素的分析
Analysis of Factors Influencing Creep Property in Simple P C Beams
【摘要】 混凝土徐变是一个非常复杂的物理力学过程,影响因素很多.本文就受弯试件制造上的误差和上下层钢筋预应力损失差异等因素对徐变特性的影响进行了理论分析,提出了修正系数表达式.
【Abstract】 The creep of concrete is very complicated pysical mechanical procedure,and depends on many influence factors.In this paper,the effect of these factors(error in manufacture of a flexural member and difference of stress losses in prestressing steel at topand bottom)on creep property is analyzed theoretically,and the expressions modifying coefficients are presented.
【关键词】 预应力混凝土徐变;
张拉力不匀;
钢筋位置偏心;
预应力损失;
【Key words】 prestresed concrete; creep; nonuniformity of tension; eccentricity of steel location; prestress losses;
【Key words】 prestresed concrete; creep; nonuniformity of tension; eccentricity of steel location; prestress losses;
- 【文献出处】 长沙铁道学院学报 , 编辑部邮箱 ,1993年02期
- 【分类号】TU 378. 1
- 【被引频次】4
- 【下载频次】71