Microsoft Word - KSR2012A103.doc

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1 YWXY º º t rzyywxyhxwz ¼ ƒx p y v ³ Evaluation on Long-Term Behavior of Reinforced Railroad Subgrade with Bending Stiffness Wall Õá ã äõ ã äø ãã äø ãã Dae-Sang Kim *, Ung-Jin Kim *, Jong-Sik Park *, Seong-yong Park * * Abstract Recent climate change increases the frequency of torrential downpour. It increasingly concerns about the collapse of slope. Also concrete track introduced in Korea in the wake of high-speed rail construction requires minimum vertical and horizontal deformation of embankment. High embankment for railroad has disadvantage compared with concrete retaining wall or bridge because it requires wider construction site. And also concrete retaining wall and bridge require high construction cost. Therefore, this paper introduces new type soil structure reinforced by steel mesh, geosynthetic and wall with bending stiffness to check the long-term behavior of it. Keywords Reinforced Railroad subgrade, Bending stiffness wall, Long-term behavior, Full scale model ï»xºm ƒ¹ Ž rƒˆ xr z l Ÿ g ƒ my m ª p ˆ z x¹ ˆ«Ž rž ƒ v ƒ ³ et ªp x k m p p ekƒy t ƒ rx x¹vz l m¼ ƒ x p rƒ ¼ t Ž v m x¹ º m z y p ƒ ˆ«m ¼ t ˆ» ³ p ¼ ƒx x y v ˆ ¹ˆ ää ï ¼ ƒx p y v y pƒˆ ¼ ƒ x pˆ ˆ z x¹ ˆ«rxr º x m ªp yƒ ƒ»xºm ƒ¹ Ž rƒˆ xr z l Ÿ ekƒy ƒ ¼ ƒx p y v ¹ tmƒ»ƒ ³ p g y v y v ±Ž y p r ³ Ò å Ó ãõ Ó ãëêêêêæêëëêäëéäêëã ã Ó ãõ Ó äãã Ð Õ Ó

2 äää Ó äääää Ï ääúï ˆ xˆ ³ m ry p p y v y m ƒ y m ª ª r ƒ ª ª r ƒ mƒ r x rx w y ¹ˆ m ƒ r y ƒ x ƒ¹ˆ «m ŽUXˆ {ˆ ŒXˆ rxy ƒ vx ƒ¹ˆ z y y x r x ¹ˆ ª y ¹ ª ¹ ª y ¹ ª y y ¹ r p v r p m ŽUY rxx wˆ y ¹ p¹

3 äääääñ Õ Ž l Ž qƒ ˆ y ˆ x ˆ y vƒ x¹ l x p ª ª r äääñ ÑÑ äääää úï ø ú m ŽUZ ƒ ª ª r y k mƒ v o m k l y Ž ˆ m±ž k x Ž vƒ ƒx ¹ˆ x x»ž r ƒ ³x ª vƒ ƒ ³x p ƒ v ³x ª r ƒ ª r ƒ ª r ƒ m y y y ª «ˆ n» o ³x ª r ƒ ª r ƒ ª r ƒ m myžy ƒ mx¹ º Ž g v y x ³x ³x my ƒ ƒ x¹ º py x ³x m ŽU[ ƒ

4 äääääú Ñ Ñ ÑÑ ³ Ž ˆ ˆ» y Ž x ˆ Ž ³ Ž ª p rª xº Ž y x ˆ» Ž Ž ƒ ª m ˆ ek Ž l y x ˆ ˆ ³ Ž Ž ª ªp «ƒž m± OˆP Ž O P ³ Ž m ŽU\ ŽS Ž v k m y x¹ ˆ ˆ» y y x¹ r ƒ x ˆ mª xºpy Ž umy Ž º y x ˆ»y x¹ s y r q ˆ y r ƒ x ˆ»x¹ ª r ƒ ª r ƒ ª r ƒ m «ry y vv m ± x ˆ» x¹ y ƒ ª «r ³x vƒ m «Ž Ž ¹ ½ Ž myžˆ w l m± ep Ž ³yr p Ž ª Ÿ py r ep xº w mv m±ž

5 (a) 1L 단면 (b) 1R 단면 (c) 2R 단면 (d) 간극수압 Fig. 6 (e) 강수량 보강재 변형율 계측결과

6 ääñï y ƒ ¼ ƒx p y v ³ y v ±Ž ˆ ¹ˆ p Ž Žˆ Ž y x¹ Ž ˆ zƒ y ˆ ƒ v o k vƒ k l Ž m ƒ k x m ƒx x py ƒ v ³x ª ª ª my y y ª mº g v y x ³x ³x my ƒ ƒ x¹ º py ˆ y Ž Ž ky ˆ» ˆ ek l y x ˆ»x¹ ª ª ª m «r y y vv m± x ˆ»x¹ y ƒ ª «r ³x vƒ m «¹»mˆ Ž ep xº w m± rekƒˆ w l ¹ ˆ Ž y x¹ xº vv m± Ñö [1] v º (1998) sƒ ƒ v ˆ l, vƒ. [2] D.S. Kim, K.H. Kim, S.H. Hwang, K.M. Yun (1998) Research on the railroad reinforced roadbed with high quality performance, conference of the Korean society for railways, pp [3] K.H. Kim, D.S. Kim, S.Y Park, J.S Park, et al. (2011) A Study on the Behavior during Constructing of Rigid Reinforced Roadbed to apply for the Slab Track, conference of the Korean society for railways, pp [4] Tatsuoka, F., Tateyama M., Uchimura T., Koseki J. (1997) eosynthetic-reinforced soil retaining walls as important permanent structures( mercer Lecture), eosynthetics International, 4(2), pp [5] Tatsuoka, F. (2008), Recent Practice and Research of eosynthetic-reinforced Earth Structures in japan Journal of eoengineering, 3(3), pp

Microsoft Word - KSR2012A172.doc

Microsoft Word - KSR2012A172.doc YWXY º º t rzyywxyhx^y v s k v A Study on the Development of Traction Jig for Bimodal Tram ã äø Ñ ã ä ãã Hee-Taek Yoon *, Young-Kon Park *, Se-Hyun Cho ** ) Abstract The bimodal tram ahead of practical