Page - 1239 - in Book of Full Papers - Symposium Hydro Engineering

reflect the effect of the presence of different soil lenses within the soft clay layer on the experienced movements especially during the installation and construction stages. Fig. 4: The lateral displacement of the bentonite pile P53 3.3. EVALUATION OF THE STRAINING ACTIONS OF THE WALL PILES The strain gages, based on vibrating wire technology, were adapted in measuring the strain in the reinforcement of the reinforced concrete piles in the wall. The vibrating wire was utilized in the monitoring program due to its long- term stability as proved by many investigations such as [7]. In the present monitoring program, both piles P52 and P54 were instrumented with the vibrating wire strain gages. The strain gages were fixed at the canal side (C) and the roadside (R). Most of the strain gages at the roadside were damaged in the Pile P52. The damage of the strain gages limited the benefit of the collected data for that pile. For the pile P54, the strain gages at both sides C and R were in good condition throughout all activities that took place in the field. 1239