A Study on the Design of Public Facilities at Coastal Areas Using AHP-AD-TOPSIS Method : Focusing on the Beaches of Busan

With the development of the tourism industry, coastal areas have become one of the primary destinations for travelers. The design of public facilities in coastal areas is a decisive factor that draws significant attention from tourists. This study employs the AHP-AD-TOPSIS hybrid model to analyze and optimize the design of coastal public facilities. First, the Analytical Hierarchy Process (AHP) is used to establish an evaluation index system, determining the weights of various design elements to ensure the scientific rigor and objectivity of the analysis. Next, the Axiomatic Design (AD) method is applied to summarize and organize user needs, accurately reflecting the preferences of different user groups. The analysis revealed that for public facility design in Busan's beaches, the top six priorities are stable structures, multifunctional services, ease of maintenance, overall aesthetics, harmonious color schemes, and integration with nature. Based on these primary requirements, design proposals were formulated. Finally, the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) was used to comprehensively rank the design proposals and select the optimal solution for coastal public facilities. The integration of the AHP-AD-TOPSIS model allows for iterative surveys to incorporate real user feedback, verifying the practicality and user satisfaction of the final design. This study provides theoretical support and practical reference for the design of coastal public facilities in the Busan region, addressing the needs of tourists while enhancing the attractiveness and sustainable development potential of coastal tourism, ultimately creating greater economic value.