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박정근(Park Jeung-Geun),김순철(Kim Sun-Cheol),한종문(Han Jong-Mon) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The ERS(Embedded Rail Track system) is constructed in the world due to a slab track system having maintenance free, high structural safety, and deduction of noise and vibration. The ADRI-ERS is developed as Korean type. This paper shows that the design of ADRI-ERS and experiments according to DIN EN 13481-5 and Korea high speed train test guidelines. The ADRI-ERS has high structural safety in pull-out test, longitudinal resistance test, and fatigue test. The design method of ADRI-ERS is proposed by two design constants due to the result of experiments also.
실대형 반복재하시험을 통한 매립형궤도 소성누적침하 평가
이수형(Su-Hyung Lee),강윤석(Yun-Suk Kang),오상호(Sang-Ho Oh),박정근(Jeung-Geun Park) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
An active application of tram is being expected in Korea in the near future. For the tram operation in urban area the embedded rail tracks where rails are completely embedded with pavements is required. When the embedded rail track is constructed on fine-grained subgrade soil excessive cumulative plastic settlements due to repetitive tram road may occur. In this study repetitive load tests were carried out to evaluate the accumulative plastic settlements of subgrade soils underneath embedded rail tracks. Two real-scale track specimens of 5 m lengths were constructed considering the maximum cant of a curved line. Repetitive tram loads of three million times were applied to the tracks in 5 Hz frequency. The accumulating patterns of plastic settlements were analyzed. Tram load distributing effects of the concrete slabs were also evaluated using the measured data of earth pressures cells that were installed underneath track. Also the measured settlements were compared with the estimated settlements calculated from an existing experimental equations and its validity is discussed.