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箱梁腹板竖向预应力设置新方法研究

Technology of Highway and Transport(2007)

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Abstract
从箱梁腹板斜裂缝对竖向预应力的敏感性分析出发,阐明竖向预应力有效削减腹板主拉应力的力学机理,探讨现阶段国内外竖向预应力设置方法及其优缺点,提出用碳纤维力筋CFRP取代传统的精轧螺纹钢建立有效预应力的新方法,尝试设计其专用锚具及施工工艺。
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Key words
CFRP,vertical pre-stress,slant web crack,novel anchoring tools
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