This paper outlines a refinement to current grillage and linear finite-element analysis methods to better estimate the behaviour of reinforced concrete deck slabs on prestressed beam or steel girder bridges, suitable for modern codes of practice and computerised methods. The work is part of research aimed at unlocking the potential of compressive membrane action. The paper proposes a three-phase approach for the prediction of cracking, deflections, ductility and load capacity. The method increases the accuracy of current grillage and conventional linear finite-element methods by taking into account flexural cracking extensions using an effective strain method. The method gives better estimates of deflections at serviceability and allows for better estimates of the ultimate load capacity of existing bridges. This results in more economic reinforcement designs with lower carbon dioxide footprint for new bridges.

中文翻译：

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考虑开裂影响的现代混凝土桥面板分析

本文概述了对当前格架和线性有限元分析方法的改进，以更好地估计预应力梁或钢梁桥上钢筋混凝土桥面板的性能，适用于现代实践规范和计算机化方法。这项工作是旨在释放压缩膜作用潜力的研究的一部分。本文提出了一种用于预测开裂、挠度、延展性和承载能力的三阶段方法。该方法通过使用有效应变方法考虑弯曲裂纹扩展，提高了当前格架和传统线性有限元方法的准确性。该方法可以更好地估计适用性时的挠度，并可以更好地估计现有桥梁的极限承载能力。