• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.9
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• pp.20-28
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• 2019

This study comparatively analyzes general walking shoes on the conical top foundation of the ground condition and the pressure distribution during walking with shoes that are currently under development. Two categories of footwear were used: general footwear and a footwear conical top foundation that is currently under development. Experiments were carried out on hard ground and sandy soil in 15 male twenties that satisfy the conditions of normal foot wearing 260 mm. The pressure during walking was measured using Techstorm's Wireless Insole System, and foot pressure was measured in 7 zones of the foot. Studies have shown different maximum forces, average pressures, and pressure distributions depending on the shoe and ground conditions. This study shows that shoes with general low pressure dispersion effects depending on the feet in hard ground and sand ground are different from shoes with the conical top foundation that is currently under development. It is expected that it will be useful for the development of shoes that can be worn in all hard ground and sandy ground by selecting various rubber materials through further research.

• Proceedings of the Korean Geotechical Society Conference
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• 2009.09a
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• pp.430-440
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• 2009

Top-Base Foundation(TBF) was developed in Japan as a factory made concrete product. It is actively used in 6,000 sites by the end of 1980s in Japan and applied for a domestic patent in 1985. It is a shallow foundation whose effectiveness is proven by many relevant researchers and engineers. TBF was introduced to Korea in 1991 and has been applied mainly to architectural structures to date. Currently, the effectiveness in bearing capacity and settlement of TBF is being underestimated for civil engineering structures. Characteristics of Top-Base Foundation studied in Japan and Korea is known as follows: (1) as concrete part and crushed stone behave together, they perform the function of rigid mat; (2) the conical part and pile part of TBF disperses load by interaction with the crushed stone; (3) by preventing lateral strain and differential settlement on lower ground, it improves bearing capacity and constrains settlement at the same time. In Korea, it is used mostly in clayey soft grounds. The formula of bearing capacity and settlement of TBF suggested in Japan give the values of the underestimated. bearing capacity while its settlement is overestimated in comparison with the values measured from the field loading test. Therefore, in this study, the stress delivery mechanism of Top-Base Foundation developed in Japan and Floating Top Base developed in Korea is investigated through numerical analysis and laboratory model test.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.3
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• pp.724-731
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• 2016

This paper presents the interdisciplinary study of a combined mechanism on the interactions between ground and foot using bioengineering and geotechnical engineering. A new mechanism of advanced technology shoes, which can be made safe with a comfortable gait on both soft and hard ground, were developed combining the mechanism of conical top foundation. The experimental tests were carried out to verify the developed shoes. The prototype shoes and test grounds were designed and produced to perform the tests. The general existing shoes and advanced technology shoes were used to measure the pressures re-acting the sole during the tests by a special measurement system. The results clearly showed that the pressures acting on the sole of advanced technology shoes were distributed uniformly compared with that of the existing shoes, and were in good agreement with theoretical approach of the new mechanism. Therefore, the advanced technology shoes could allow a safe gait ergonomically by a new mechanism on any ground type. The load transfer could occur by the interaction between ground and shoes. In addition, these results are expected to be useful for the development of an interdisciplinary study of a new mechanism in the future.