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- 저자 : F. Tatsuoka (검색결과 2 건)
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Tatsuoka F 한국토목섬유학회 2006 한국토목섬유학회 학술발표회 Vol.2006 No.12
The advantages of geosynthetic-reinforcing technology to construct new soil structures including; a) a relatively short construction period; b) small construction machines necessary; and c) a higher stability of completed structures, all contributing to a higher cost-effectiveness, are addressed. Several typical cases in which embankments having a gentle slope and conventional type soil retaining walls that were seriously damaged or failed were reconstructed to geosynthetic-reinforced steepened slopes or geosynthetic-reinforced soil retaining walls are reported. It is shown that the reconstruction of damaged or failed conventional soil structures to geosynthetic-reinforced soil structures is also highly cost-effective. Rehabilitation of an old earth-fill dam in Tokyo to increase its seismic stability by constructing a counter-balance fill reinforced with geosynthetic reinforcement is described.
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Geosynthetic-Reinforced Soil Structures to Mitigate Natural Disasters
F. Tatsuoka,M. Tateyama,J. Koseki 한국토목섬유학회 2011 한국토목섬유학회 학술발표회 Vol.2011 No.11
The total length of permanent geosynthetic-reinforced soil (GRS) retaining walls (RWs) with staged-constructed full-height rigid (FHR) facing for railways, including high-speed train lines, highways and so on is now more than 125 km in Japan. Many were also constructed replacing conventional type RWs and embankments that collapsed during recent earthquakes, heavy rains, floodings and storms. It is proposed to construct GRS coastal dikes with FHR facing connected to geosynthetic reinforcement layers as a tsunami barrier. Based on the GRS RW technology, a number of bridge abutments with geosynthetic-reinforced backfill were constructed. The latest version, called the GRS integrated bridge, comprises a continuous girder integrated to a pair of RC facing, not using bearings, and the \backfill reinforced with geosynthetic reinforcement layers firmly connected to the facing. The advantageous features of this new bridge system are summarized. It is proposed to apply this new bridge system to replace conventional type bridges that collapsed by earthquakes, flooding and tsunami and also to newly construct those having high resistance against these natural disasters.
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