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

Abstract

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.

Functional framework construction of DSP sports application system based on improved genetic algorithm and AI

“…In addition to the pipeline technology of DSP, as long as the hardware structure of the program is optimized, image matching can be used to put forward higher requirements for the real-time motion control software due to the particularity of the real-time motion control system. The characteristics of real-time motion control software are in addition to the characteristics of general software systems, Real-time software also generally has real-time, multi-task, parallel and distributed characteristics 7 .…”

Impact of Structural Health Monitoring on Aircraft Operating Costs by Multidisciplinary Analysis

“…However, the discovered optimal solution is still not related to the impact returned at aircraft level. Other approaches are also available in literature to try to quantify the value of information given by SHM systems [ 20 ] or to implement a component replacement method in order to fulfil the performance requirements but also pursue a cost reduction [ 21 , 22 ]. However, this kind of approaches are well suited for civil engineering and rarely extended to aeronautical fields.…”

Improving Bridge Expansion and Contraction Installation Replacement Decision System Using Hybrid Chaotic Whale Optimization Algorithm

“…In accordance with installation types and construction characteristics, the replacement technologies for BECIs can be generally divided into modular type replacement, comb plate type replacement, and seamless type replacement [1]. Referring to the research of Huang et al [2], a BECI replacement decision system is established based on the analytic hierarchy process (AHP) [3], where the design requirements, construction requirements, management requirements, and scopes of application are integrated as decision criteria to provide a persuasive mathematical model for the selection of an optimal replacement plan. As a potential multi-criteria decision-making (MCDM) method, AHP has higher applicability and effectiveness compared with other common ones, such as the analytic network process (ANP), the preference ranking organization method for enrichment evaluations (PROMETHEE), and the simple additive weighting (SAW) [4].…”