Petchsasithon, Arthit

Preferred name

Alternative Name

Petchsasithon, A.

Main Affiliation

School of Engineering

arthit.pe@kmitl.ac.th

Now showing 1 - 5 of 5

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Analysis of Lateral Buckling of Bar with Axial Force Accumulation in Truss
(2017-07-02)
Wattanamankong, Nuttapon
;
Petchsasithon, Arthit
;
Dhirasedh, Suwat
This research studies the lateral buckling behavior in truss and lateral buckling coefficient of truss. Lateral buckling analysis of truss is performed by simulating the structural model with both end supports being pinned and roller-supports. The analysis is indirectly conducted using Elastic Theory to evaluate the length of lateral buckling by calculating the determinant of the Matrix [K]. Results from the analysis are marginally different from those obtained from finite element program and are considerably less than those obtained from Eurocode standard. This can be concluded that using elastic theory to evaluate lateral buckling coefficient of truss member will result in more economical section.
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Sustainable thin shell analysis on structural foundation subjected to seismic loads
(2023-01-01)
Nassir, Azizah Abdul
;
Min, Yee Hooi
;
Petchsasithon, Arthit
;
Senin, Syahrul Fithry
Shell structures are recognized for their exceptional performance in withstanding compression forces, often utilized as roof components. However, Southeast Asia experiences significant annual losses due to floods, with inadequate structural mitigation despite high population concentrations in seismic risk areas. Previous research explored thin shell structures as elevated foundations to mitigate flood effects on buildings. Unfortunately, the proposed shell design exceeded the material's strength limit of 40N/mm2, limiting its feasibility. To address this, our study proposes a modified thin shell with a 600mm thickness. Finite Element analysis using LUSAS software evaluated the new design's structural behavior under dynamic loads from earthquakes and flood-induced waves. Results demonstrate a substantial reduction of up to 99% in equivalent stress compared to the previous model [Model P]. The revised model [Model C] proves feasible in withstanding intense building loads, ensuring maximum stress remains below the concrete material's strength limit. Implementation of these findings offers valuable structural mitigation, reducing flood impacts and enhancing both structural resilience and human safety.
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Seismic Retrofit of RC Building with Elastic Stage of Buckling-Restrain Braces
(2023-01-01)
Thipprapan, Thanawat
;
Jarasjarungkiat, Amphon
;
Saingam, Panumas
;
Petchsasithon, Arthit
Seismic retrofit of a reinforced concrete (RC) building using a buckling-restrained brace is an innovative method to improve the seismic performance of the existing RC buildings to resist damage from the future earthquake. This research proposes a simple method to retrofit RC buildings with buckling-restrained braces (BRBs). A 4-story school reinforced concrete building in Thailand is selected as a target building. The analysis results of the existing RC building indicate that the structure cannot withstand the seismic force under the newest code, which was published in 2021. There were failures at the columns of the 1st–3rd floors, in which lateral displacements exceeded the current seismic design standard. After retrofitting the target building by the proposed method with BRBs, it was found that the lateral displacements are reduced and the target RC building can withstand the seismic demand of the newest code. Therefore, the retrofitted building can be resisted future earthquakes. This shows the effectiveness of the introduced retrofit method.
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Linking engineering approach and local wisdom in water sensitive urban design as an adaptation strategy to climate change
(2020-03-03)
Permana, A. S.
;
Petchsasithon, A.
The impacts of climate change on cities have been clearly identified. Climate change threats the cities on urban infrastructure, urban life and well-being, urban environment and entire urban system. One of the most obvious impacts of climate change on urban system is the presence of more vulnerability of cities on urban floods due to global sea rise. This is particularly valid for coastal cities. While mitigation strategies could not be comprehensively completed in short time, the adaptation strategies could, therefore, be undertaken to complement the overall strategies to minimize the impacts. An engineering approach can be done at micro-level but should not be the only solution among many possible ways out. Urban planning and design, on the other hand, could be implemented at macro-level. Water sensitive urban design aims at minimizing the negative impacts of water-associated delinquencies through city planning and design. This study attempts to juxtapose the possible engineering approaches to cope with the impacts of climate change in the city at individual micro-level buildings as a way of the urban citizens to adapt to climate change impacts. The engineering solutions proposed in this study are discovered from various studies around the world and adjusted to local conditions taking into account locally available technologies for proper suitability and the solutions are therefore technologically possible, locally adaptable and environmentally friendly. The local wisdom on climate change adaptation itself has been observed in Southeast Asian countries.
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Comparative analysis of city planning and land use change in Bangkok, Thailand, by using remote sensing and GIS
(2018-08-14)
Posuk, Suvimon
;
Kajita, Yoshitaka
;
Petchsasithon, Arthit
This study proposed the comparative analysis of city planning and land use change by using remote sensing and GIS in Bangkok, Thailand. Bangkok had been developed and faced many land use problems. If the problems were not controlled, it will cause more problems in the future. Therefore, this study suggested the solution to solve occurring land use problems in Bangkok. Which, remote sensing was used to do the land survey and automatically map urban land cover from Landsat time-series satellite imagery. Then, the change of urban area and Bangkok Comprehensive Plan were compared by GIS. And, the results showed that urban area in Bangkok increased 403.99 km2 over the past 21 years. While rural and agricultural zone in Bangkok Comprehensive Plan decreased due to residential area expansion. So, Area Division System and the district plan from urban planning system of Japan can solve the problems by developing the city and controlling urban areas expansion.

Petchsasithon, Arthit

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