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首页> 外文期刊>International journal of steel structures >Analytical equations for interfacial stresses of composite beams due to shrinkage
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Analytical equations for interfacial stresses of composite beams due to shrinkage

机译：收缩引起的复合梁界面应力的解析方程

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摘要

Long term effects due to shrinkage may lead to deformations in steel-concrete composite members that are to be taken into account in the verification of the in-service condition. Simultaneously, tangential and normal stresses develop at the connection between concrete and steel and they can result in uplift effects, especially in end regions. In this paper, an analytical model is presented and closed-form solutions are derived in order to quantify deflections of composite members with partial interaction, as well as stresses and relative displacements at the connection. It is shown that deflections and tangential stresses/slips can be properly obtained if equal curvatures between the components of the composite member are assumed. Nevertheless, such a hypothesis must be abandoned in order to reproduce uplift effects at the interface and a new model is presented to derive the distribution of normal stresses.
机译：由收缩引起的长期影响可能会导致钢混混凝土构件变形，在使用条件验证中应考虑这些变形。同时，混凝土和钢之间的连接处会产生切向应力和法向应力，它们会导致隆起效应，尤其是在端部区域。在本文中，提出了一个解析模型并导出了封闭形式的解决方案，以量化具有部分相互作用的复合构件的挠度以及在连接处的应力和相对位移。已经表明，如果假定复合构件的各部件之间的曲率相等，则可以适当地获得挠曲和切向应力/滑动。然而，必须放弃这样的假设，以便在界面处重现隆起效应，并提出了一个新模型来推导正应力的分布。

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