Prasarnklieo, Wacharapong

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Prasarnklieo, Wacharapong
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wacharapong.pr@kmitl.ac.th

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    Item type:Publication,
    Diagnostic load test of continuous prestressed box girder bridge
    (2013-01-01)
    Sirimontree, Sayan
    ;
    Chompooming, Kridayuth
    ;
    Prasarnklieo, Wacharapong
    A main objective of the present investigation is to obtain structural responses of a continuous box girder bridge employing a diagnostic load test. The bridge under consideration is a 7-span, prestressed concrete structure with the total length of 665 meters. Four 3-axle trucks are employed in the diagnostic load test. Strains and vibratory motions of the girder are measured and reported. Varying speeds of test trucks are considered during the dynamic test. Natural frequencies and mode shapes of the box girder are determined based on modal analysis. Correlation between natural frequencies of the box girder obtained from field measurement and a finite element model is also illustrated. Wavelet analysis is employed to decompose girder strains into static and dynamic components, and dynamic amplification factors are determined and reported. In addition, the results of long-term measurement of pot bearing movements subjected to variations of surrounding temperature are also presented.
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    Biophilic Architecture in the Livable City of Melbourne CBD
    (2025-12-01)
    Thampanichwat, Chaniporn
    ;
    Wongvorachan, Tarid
    ;
    Somngam, Panyaphat
    ;
    Petlai, Taksaporn
    ;
    Sirisakdi, Limpasilp
    Amid continuous urban population growth and urbanization’s environmental and social challenges, livable cities have become a key priority for governments. Among the various factors influencing urban livability, architectural design integrating natural elements plays a critical role. Melbourne consistently ranks as one of the world’s most livable cities, with its Central Business District (CBD) serving as its core. Since a previous study has highlighted a research gap concerning the role of architecture in livable cities and indicated that the characteristics of biophilic architecture remain unclear, this study addresses the following question: What are the attributes of biophilic architecture in the CBD of the livable city of Melbourne? Subsequently, buildings exhibiting characteristics of Biophilic architecture were surveyed, and photographs capturing the most representative aspects of each building were documented. These characteristics were then coded and analyzed using statistics. The study found that Biophilic architecture is extremely rare in Melbourne’s CBD, with only four of 6375 properties (0.06%) identified as such. The most prominent attributes include connection to nature, natural color tones, and light modulation shaped by the city’s grid layout and strong sunlight. However, the dominance of concrete structures and heritage regulations constrains formal diversity. While Melbourne may not provide abundant examples, its context offers valuable insight into how urban form and policy shape biophilic expression. Future studies should extend this comparative approach to other cities to better understand context-specific adaptations of biophilic design.
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    Field measurement and load testing of the Rama IX cable-stayed bridge
    (2013-01-01)
    Chompooming, Kridayuth
    ;
    Sirimontree, Sayan
    ;
    Prasarnklieo, Wacharapong
    In this paper, field measurement and diagnostic load test carried out for the Rama IX Bridge, as part of bridge in-depth inspection and evaluation is presented. One of the main objectives of the investigation is to better understand the physical behaviors of the aging bridge employing field measurements and to reduce uncertainties, related to material properties, boundary conditions and stiffness contribution as well as any influence of damage and deterioration, in structural evaluation of the bridge structure. A modal analysis is adopted to determine modal properties of the cables, steel box girder, and pylons. A number of three-axle test trucks with predetermined loads are employed in the diagnostic load test. Cable frequencies and strains obtained under the applications of test trucks are presented. A wavelet analysis is adopted for decomposition of strains into static and dynamic components in determination of dynamic effects on structural responses.