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Construction and Application of Bridge Expansion and Contraction Installation Replacement Decision System Based on the Analytic Hierarchy Process

机译：基于分析层次过程的桥梁扩展和收缩安装替代决策系统的构建与应用

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摘要

Bridge expansion and contraction installation (BECI) has proved to be an indispensable component of bridge structures due to its stability, comfort, and durability benefits. At present, conventional replacement technologies for modular-type, comb plate-type, and seamless-type BECIs are widely applied worldwide. However, it is unfortunate that there remains no systematic research on quantitative assessment approaches for evaluating the overall technical status and selecting optimal replacement methods for existing BECIs. Therefore, considering the installation performance according to functional index evaluations and the economic cost based on life-cycle value assessment (LCVA), a standardized quantitative assessment approach is proposed for optimal replacement method selection in this article. Simultaneously, the other new quantitative assessment method is developed for evaluating the overall technical status of BECIs, which provides a basis for the necessity of replacement. A BECI replacement decision system is constructed, and a corresponding case study illustrates that the proposed system based on the analytic hierarchy process (AHP) in this article proves to be reasonable and feasible. The results reveal that the selected replacement method with both a higher function coefficient and a lower economic coefficient can not only fulfil the performance requirements but also pursue a cost reduction, which leads to a considerable value increment. This system can effectively assist bridge managers in making appropriate operation and maintenance (O and M) decisions in actual engineering projects.
机译：由于其稳定，舒适性和耐用性，桥梁扩展和收缩安装（Beci）被证明是桥梁结构的不可或缺的成分。目前，用于模块化，梳状板型和无缝型BENIS的常规替代技术在全球范围内广泛应用。然而，不幸的是，对评估整体技术状况的定量评估方法仍然没有系统的研究，并为现有的最佳替代方法选择最佳替代方法。因此，根据功能指标评估和基于生命周期值评估的经济成本（LCVA），考虑到安装性能，提出了一种标准化的定量评估方法，以便在本文中获得最佳替代方法选择。同时，制定了其他新的定量评估方法，用于评估BENIS的整体技术现状，为更换的必要性提供了基础。构建Beci替换决策系统，并且相应的案例研究表明，本文中的基于分析层次处理（AHP）的提议系统证明是合理可行的。结果表明，具有较高功能系数和较低的经济系数的所选替代方法不仅可以满足性能要求，而且还追求降低成本，这导致了相当值的增量。该系统可以有效地帮助桥梁管理员在实际工程项目中进行适当的操作和维护（O和M）决策。

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