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首页> 外文期刊>Journal of Constructional Steel Research >Effective width of a concrete slab in steel-concrete composite beams prestressed with external tendons
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Effective width of a concrete slab in steel-concrete composite beams prestressed with external tendons

机译：体外索预应力钢-混凝土组合梁中混凝土板的有效宽度

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摘要

The finite element method is applied to evaluate the effective width of a concrete slab in composite beams prestressed with external tendons. The beams studied are simply supported, with external prestressed strands straightly and draped arranged. The effective width for the prestressed composite beams evaluated based on the finite element parametric study is compared with that of plain composite beams without prestressing, and code provisions. The influence of the shear connections on the effective width and the shear slips along the beam span, as well as the incremental stresses developed in the prestressed strands, are analyzed. The behaviors of the external prestressed composite beams subject to the shrinkage and creep in the concrete slab are also discussed.
机译：运用有限元方法评估了预应力混凝土组合梁中混凝土板的有效宽度。所研究的梁简单地支撑，外部预应力钢绞线笔直并悬垂排列。将基于有限元参数研究评估的预应力组合梁的有效宽度与无预应力和规范的平面组合梁的有效宽度进行了比较。分析了剪力连接对有效宽度和沿梁跨度的剪滑的影响，以及在预应力钢绞线上产生的增量应力。还讨论了外部预应力复合梁在混凝土板上受收缩和蠕变影响的行为。

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