Seite - 1238 - in Book of Full Papers - Symposium Hydro Engineering

displacement doesn’t exceed 20% of such value. It can also be noted that despite such high displacement, the piezometer readings reflect no leakage or escape of water. Fig. 3: The readings of inclinometer I2 Figure 5 shows the lateral displacements of the reinforced concrete pile P54. It is clear from the distribution of the data that the pile experienced lateral displacement smaller than that experienced by P53. The previous observation is true for all the loading and construction stages. The loading stages L(I), L(II), and L(III) resulted in considerable increase in the lateral displacement all over the pile length. The presence of silty sand lenses in the soft clay layers played a vital role in the value of the experienced lateral displacement. It is clear also that the pile experienced high lateral displacement just after loading and then the value of the displacement tends to decrease with time. It is worth mentioning that the vertical movements of the wall piles were monitored and evaluated but not covered in the present paper. The analysis of the lateral and vertical displacements (movements) of P53 and P54 reflects the ability of the designed monitoring system in tracing the performance of the secant-pile wall. The monitoring system was able to reflect the difference in installation time among its components, and what took place during the construction and the loading stages. The monitoring system was also able to 1238