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体外预应力钢箱—混凝土组合梁的预应力损失的计算方法
The Calculation for the Loss of Pre-stressing in the External Pre-stressed Steel-Concrete Composite Box Beam
【摘要】 考虑了钢梁、栓钉以及非预应力筋对混凝土变形的约束作用,分析了体外预应力钢箱—混凝土组合梁的预应力损失的基本特性,建立了混凝土非自由收缩、徐变变形引起的体外预应力钢箱—混凝土组合梁的预应力损失的计算公式。
【Abstract】 Taking the restriction of steel beam,stud and reinforcing steel bar into account,the loss of pre-stressing in the external pre-stressed steel-concrete composite box beam has been analyzed,and the formula of the loss of pre-stressing caused by restricted concrete shrinkage and creep deformation has been set up.
【关键词】 预应力损失;
体外预应力;
钢箱—混凝土组合梁;
非自由收缩变形;
非自由徐变变形;
【Key words】 the loss of pre-stressing; external pre-stressing tendon; steel-concrete composite box beam; restricted concrete shrinkage; restricted concrete creep deformation;
【Key words】 the loss of pre-stressing; external pre-stressing tendon; steel-concrete composite box beam; restricted concrete shrinkage; restricted concrete creep deformation;
【基金】 江苏省普通高校自然科学研究计划资助项目(02KJB560001)
- 【文献出处】 公路工程 ,Highway Engineering , 编辑部邮箱 ,2007年04期
- 【分类号】TU398.9
- 【被引频次】6
- 【下载频次】177