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Earthquake Engineering Research - HKU Libraries - The University ...

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136<br />

plane<br />

plane<br />

sliding<br />

x-z section<br />

y-z section<br />

excitation<br />

excitation<br />

Fig. 11 Critical Sliding Surface with Limitation<br />

of the Area for Type-1 Slope Model<br />

CONCUSION<br />

sliding<br />

Fig. 12 Critical Sliding Surface without<br />

Limitation of the Area for Type-1 Slope Model<br />

In this paper, an evaluation method of safety<br />

factor of sliding surface based on 3-d dynamic<br />

FEM is studied and numerical examples are<br />

shown. Within the simulations performed in this<br />

study, the safety factors obtained by 3-d model is<br />

larger than those by 2-d model Though it is<br />

difficult to conclude that the estimation by 2-d<br />

model is always conservative, our results suggest<br />

that actual 3-d slope has more safety margin than<br />

that estimated by 2-d model in many cases.<br />

y-z section<br />

plane<br />

excitation<br />

sliding<br />

References<br />

Fig. 13 Critical Sliding Surface with Limitation<br />

of the Area for Type-2 Slope Model<br />

KITA H., ONO L and KOBAYASHI S. (1999).<br />

<strong>The</strong>oretical analysis of the unimodal normal<br />

distribution crossover for real-coded genetic algorithms (in Japanese), Transactions of the society of<br />

instrument and control engineers, vol.35-11, pp. 1333-1339<br />

TSUTSUI S. and GHOSH A., CORNE D. and FUJIMOTO Y. (1997). A real coded genetic algorithm<br />

with an explore and an exploiter populations", Proceedings of the 7th International Conference on<br />

Genetic Algorithms, pp.238-345<br />

YOSHIDA I. (2000), Comparison of Real Coded GA(Genetic Algorithm) and Binary Coded GA 7<br />

Proceedings of International Conference on Monte Carlo Simulation, pp. 81-87

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