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Finite Element analysis of post-tensioned SG-laminated glass beams with adhesively bonded steel tendons

机译：后张SG层压玻璃钢梁的有限元分析

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Taking advantage of past full-scale experimental test results, the bending performance of laminated glass beams with post-tensioned, adhesively bonded steel tendons is explored via refined Finite-Element (FE) models. As far as the primary advantage of the post-tensioned glass beam concept is to provide an initial state of compressive stresses in glass, a marked enhancement of the expected structural performance is expected (i.e. increase of the initial fracture load and redundancy), compared to typically brittle, unreinforced laminated" glass beams. Several key aspects can affect the overall performance of such beam typology, first of all the adhesive joint providing the structural interaction between the glass beam and the steel tendon, as well as the geometrical and mechanical properties of each beam component, in relation to the amount of initial post-tensioning force. Based on a first validation of a reference full 3D FE model towards the available past full-scale experimental test results, an extended parametric study is presented in this paper, giving evidence to the effects of several mechanical and geometrical parameters (i.e. steel tendon section, level of the applied post-tensioning force, adhesive joint type and size, etc.) in the bending performance of post-tensioned laminated glass beams at room temperature under quasi-static load. (C) 2017 Elsevier Ltd. All rights reserved.
机译：利用过去的全面试验结果，通过改进的有限元（FE）模型探索了具有后张，粘结钢腱的夹层玻璃梁的弯曲性能。就后拉力玻璃梁概念的主要优点是在玻璃中提供压缩应力的初始状态而言，与之相比，预期的预期结构性能将得到显着提高（即初始断裂载荷和冗余​​度增加）。典型的是脆性的，未增强的层压“玻璃梁”。几个关键方面会影响此类梁的总体性能，首先，胶粘接头提供了玻璃梁与钢腱之间的结构相互作用，以及钢梁的几何和机械性能相对于初始张拉力的大小，每个梁的组成部分。基于对完整的3D FE模型参考模型的首次验证，以对过去的满量程实验测试结果进行验证，本文进行了扩展的参数研究，得出若干机械和几何参数（即钢腱截面，施加的后张紧力水平）影响的证据，胶合接头的类型和尺寸等）在室温下在准静态载荷下的后张夹层玻璃梁的弯曲性能。 （C）2017 Elsevier Ltd.保留所有权利。

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