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진원종(Won-Jong Chin),곽종원(Jong-Won Kwark),최은석(Eun-Suk Choi),강재윤(Jae-Yoon Kang),김성태(Sung-Tae Kim),윤혜진(Hye-Jin Yoon),김남식(Nam-Sik Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
This paper aims for proposed the deflection limit on vibration serviceability of high-speed railway bridges considering passenger's comfort when a train passes a railway bridge. The vertical acceleration signals of passenger cars obtained from test were compared with them from the bridge-train transfer function by riding KTX. The deflections by KTX of seven high speed railway bridges were assumed as sine and haversine wave. The deflection limit on vibration serviceability of high-speed railway bridges considering passenger's comfort when a train passes a railway bridge duration can be expanded using bridge-train transfer function and bridge comfort limit considering serviceability due to bridge vibration. And it was compared to other allowable deflection limits of railway bridge design specifications.
진원종 ( Chin Won-jong ),최은석 ( Choi Eun-suk ),곽종원 ( Kwark Jong-won ),김영진 ( Kim Young-jin ),김병석 ( Kim Byung-suk ) 한국구조물진단유지관리공학회 2001 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.5 No.2
The rigidities of substructures are the important data in the rail-bridge interaction analysis in high speed railway. This experimental study is being performed because of followings. - More correct longitudinal stiffness of the structure including substructure should be considered in the calculation of stresses in rails. - There are many uncertainties in the design and construction of the piers and foundations. - Actual guideline for the rigidities of piers and foundations in the design is necessary. - Measurement on the rigidity of pier according to the types of piers, foundations and soil-conditions is needed. Curve for estimating the total rigidity of substructure will be obtained through this and further experimental studies. It may be used in the analysis of high speed railway bridge and then, longitudinal stresses in the rails can be estimated more accurately. Two pairs of piers, which consist of pot-bearing for fixed support and pad-bearing for movable support, are loaded by steel frame devices with steel wire ropes and hydraulic jack. The responses which are measured at each loading stages in those field tests are displacements and tilted angles on the top and bottom of piers.