Coupled analysis for the influence of blasting-induced vibration on adjacent dam

Inn-Joon* Park; Sung-In Kim; Kee-Chun Nam; Chang-Won Kwak

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2004 Vol.6, Issue 1 Preview Page Next Page

Coupled analysis for the influence of blasting-induced vibration on adjacent dam 발파하중이 인접 댐에 미치는 진동영향에 대한 연계해석적 검토

31 March 2004. pp. 41-50

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Abstract

The numerical investigation for the effects of blasting-induced vibration on adjacent dam and pore water pressure fluctuation was conducted through solid-water coupled analysis under dynamic loading. The stability of dam was examined by peak particle velocity of core. Pore water pressure distributions were calculated by steady state flow analysis using coupled analysis on ground water and blasting-induced vibration. The influence of pore water pressure and the effective stress distribution in the ground were also investigated. Furthermore, effective stress alteration was examined by applying Finn & Byrne Model to monitor the generation and dissipation of pore water pressure.

Keywords

Pore water pressure

coupled analysis

peak particle velocity

finn & byrne model

본 논문에서는 기존댐 인접지에 터널구조물을 건설하기 위한 발파시, 폭괴하중으로 인한 지반진동이 댐 제체와 간극수압에 미치는 영향을 고찰하였다. 댐의 안정성 검토는 발파시 발생하는 코어부의 최대입자속도 (Peak Particle Velocity)를 계산하여 수행하였다. 간극수와 지반진동간의 상호 연계해석을 위하여 댐 제체에 대한 정상상태 흐름해석을 수행하여 간극수압 분포를 파악하고, 유발된 과잉간극수압 및 유효응력분포로 발파하중이 인접지반에 미치는 영향을 분석하였다. 또한 발파와 같은 급속하중 재하 후 과잉간극수압의 증가 및 소산현상 해석을 위하여 Finn & Byrne Model을 적용하여 하중재하 전후의 유효응력 변화양상을 검토하였다.

키워드

간극수압

연계해석

최대입자속도

finn & byrne 모델

References

1. Finn, W. D. L., Martin, G. R., and Lee, K. W. (1977) “An effective stress model for liquefaction.” J. Geotech., Div. ASCE, 103 (6), pp. 517-533

2. Byrne, P. (1991) “A Cyclic Shear-Volume Coupling and Pore-Pressure Model for Sand”, in Proceedings: Second International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics (St. Louis, Missouri), Paper No. 1.23, pp. 47-55.

3. Martin, G. R., Finn, W. D. L. and Seed, H. B. (1975) “Fundamentals of Liquefaction Under Cyclic Loading”, J. Geotech., Div. ASCE, 101 (GT5), pp. 423-438.

4. Seed, H. B., Martin, P. P. and Lysmer, J. (1975) “The Generation and Dissipation of Pore Water Pressures During Soil Liquefaction”, University of California, Berkeley, Earthquake Engineering Research Center, NSF Report PB 252 648.

5. Zienkiewicz, O. C. and Stagg, K. G., Hinton, E. (1988) “Finite Element in Solution of Problem in Rock Mechanics”, Proc Int. Symp. Underground Engineering, India.

6. Prevost. J. H. (1986), “Effective Stress Analysis of Seismic Site Response”, Internation Journal for Numerical and Analytical Methods in Geomechanics, Vol. 10, pp. 653-665.

7. Das, Braja M. (1993) “Principles of Soil Dynamics”, PWS-KENT Publishing Company, pp. 397-439.

8. Day. R. W. (2002) “Geotechnical Earthquake Engineering Handbook”, McGraw-Hill, Chapter 7. 1-7. 27.

Information

Publisher :Korean Tunneling and Underground Space Association
Publisher(Ko) :한국터널지하공간학회
Journal Title :Journal of Korean Tunnelling and Underground Space Association
Journal Title(Ko) :한국터널지하공간학회 논문집
Volume : 6
No :1
Pages :41-50

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

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