http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
金泳壽,都德洙,徐寅軾 慶北大學校 1992 論文集 Vol.52 No.-
In this paper the stability of gravity retaining wall is analysed through its probability of failure during earthquakes. Mononobe and Okabe, Seed and Whitman, and Elms and Richards methods are used to determine dynamic earth pressures. And Meyerhof's ultimate bearing capacity theory is employed to find bearing capacity, Three possible modes of failure are examined using AFOSM method. To account for the uncertainty in their numerical values, these factors are taken tobe random variables instead of uniquely valued quantities. On the base of the results obtained in this study, it is concluded that (1) the program that is developed by this study is very useful in assessing the reliability walls under both static and seismic conditions : and (2) the probability of failure of a gravity retaining wall is greatly affected by horizontal accelleration.
박병기(Park, Byung-Ki),전석원(Jeon, Seokwon),박광준(Park, Gwang-Jun),도덕수(Do, Deog-Soo),김태훈(Kim, Tae-Hoon),정두섭(Jung, Du-Seop) 한국소음진동공학회 2005 한국소음진동공학회 논문집 Vol.15 No.12
Since blast-induced vibration may cause serious problem to the rock mass as well as the nearby structures, the prediction of blast-induced nitration and the stability evaluation must be performed before blasting activities. Dynamic analysis has been increased recently in order to analyze the effect of the blast-Induced vibration. Most of the previous studies, however, were based on the continuum analysis unable to consider rock joints which significantly affect the wave propagation and attenuation characteristics. They also adopted pressure corves estimated tv theoretical or empirical equations as input detonation load, thus there were very difficult to reflect the characteristics of propagating media. In this study, therefore, we suggested a dynamic distinct element analysis technique which uses velocity waveform obtained from a test blast as an input detonation load. A distinct element program, UDEC was used to consider the effect of rock joints. In order to verify the validity of proposed method, the test blast was simulated. The predicted results from the proposed method showed a good agreement with the measured vibration data from the test blast. Through the dynamic numerical modelling on the planned road tunnel and slope, we evaluated the effect of blast-induced nitration and the stability of rock slope.