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연약지반 성토시 사면의 안정에 미치는 Geotextile의 효과
김수일,조삼덕,우제윤 연세대학교 산업기술연구소 1982 논문집 Vol.14 No.2
Geotextiles have been extensively used in road constructions as effective and economical materials performing several functions such as separation, filtration, drainage, protection against frost break, and as reinforcement to improve the load bearing capacity and stability of road. In this study, a method for the analysis of embankment reinforced with geotextile is studied. Computer program based on the simplified Bishop method is modified in order to investigate quantitively the effect of gotextile on the slope stability of embankment on weak soils. Evaluation of the tensile strength required for the design safety factor is also possible utilizing the computer program in this study.
Utilization of Waste Tires to Reduce Railroad Vibration
Cho, Sam Deok,Kim, Jin Man,Kim, Ju Hyong,Lee, Kwang Wu Trans Tech Publications, Ltd. 2007 Materials science forum Vol.544 No.-
<P>This study proposes a means to recycle waste tires as a material to reduce ground vibration. A series of field experiments was carried out to assess the reduction effect of railroad transport vibration by utilizing waste tire chips. The ground vibration during the railroad transport operation was measured in two railroad lines to investigate the vibration characteristics prior to field model tests. Test results showed that the frequency of vibration induced by railroad transport ranged from 5Hz to 100Hz, while the dominant frequency was within the range of 20Hz to 40Hz. A series of field model test was carried out by using tire chips (5cm×5cm in size) as a reduction material for railroad vibration. The field experiment results showed that the reduction effect of waste tires for railroad vibration increased with increasing thickness of the waste tire layer and increasing frequency of the vibration source. From these experimental results, it can be concluded that waste tires can be recycled effectively for reduction of railroad.</P>