Back analysis of electro-level readings installed in the slab of the UHE Machadinho dam

Figures & data

Figure 1. Electro-level positions on slab 24.

Figure 2. Procedure for parameter identification.

Figure 3. The one-dimensional model and measured rotations.

Figure 4. Hydrostatic pressure and obtained reactions.

Table 1. Identified parameters with the beam model

Identified parameters (tf m^−1)
q1=0.247	q2=0.072	q3=− 0.080	q4=0.120	q5=− 0.046	q6=0.003	q7=− 0.001

Figure 5. Different material zones.

Table 2. Design physical parameters

Material	Young's modulus E (MPa)	Poisson's coefficient ν
M1	140	0.15
M2	100	0.15
M3	50	0.15
M4	80	0.15
M5	50	0.15
M6	40	0.15
M7	80	0.15
M8	30603	0.2
M9	30000	0.3

Figure 6. Finite element mesh for the 2D model.

Figure 7. Initial sensitivity coefficients.

Table 3. Parameter identification with different initial values

Initial estimation (MPa)	Number of iterations	Relative error (%)	Identified parameter (MPa)	Fmin
50	23	0.09	68.01	2.5260 × 10^−4
80	21	0.10	68.77	2.5269 × 10^−4
100	26	0.10	68.77	2.5269 × 10^−4

Figure 8. Sensitivity coefficients.

Figure 9. Measured and calculated rotations.

Figure 10. Deformed configurations.

Figure 11. Bending moment diagrams obtained.

Figure 12. Bending moment diagrams restricted to zone AB.