Volume -I , Issue -I, October 2013

AN EVALUATION AND COMPARISON OF SIRJAN'S EMBANKMENT BEHAVIOR WITH INSTRUMENTATION DATA AND SOFTWARE PLAXIS

MASOOD KEYVANIPOUR, MAHDI MOHARRAMPOUR AND MOHAMMAD KHERAD RANJBAR

Permanent control of embankment dam stability during construction, the first impounding and also during utilization of the project, is a significant issue. Instrumentation of such dams which monitor their behavior plays an important role in the dam stability. Regarding that an earth dam is a continuous structure with non-linear behavior, finite element method and appropriate soil modeling could be employed for non linear analysis. In the present research, based on the instrumentation data of sirjan embankment which is located in the North East of Iran, bar dam, a 71 meters high embankment dam, was instrumented in order to monitor internal soil behavior such as settlement and soil stresses. Only typical results of the measurement program are presented here. The results that are given have been selected because they provide Quantitative information about the performance of the instrumentation. Afterward, two soil models including Mohr-Coulomb and Hardening models were selected for stress-strain analysis. PLAXIS 2D, a finite element code was employed to simulate the behavior of dam during the first impounding and for stress-strain deformation. The results specified that Hardening model is more capable of predicting the dam behavior determining the dam stability during construction and afterwards.

embankment, precision instrument, infinite-element, behavior analysis, consolidation

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