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| STUDY OF DISPLACEMENT BACK ANALYSIS OF ELASTO-VISCOPLASTIC PARAMETERS OF ROCK SLOPE |
| TAN Wanpeng，ZHENG Yingren |
| (Department of Architecture and Civil Engineering，Logistical Engineering University，Chongqing 401311，China) |
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Abstract Based on complex variable differentiation method and according to the basic principles of the elasto- viscoplastic finite element analysis，Newton-Laplason iterative Optimized method is adopted with back analysis parameters and elastico-viscoplastic displacement by programme Fortran. With displacement of the key monitoring points，both strength parameters and creep parameters are back analyzed efficiently and accurately. Two examples verified the method¢s feasibility.
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Received: 18 April 2009
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