PSI - Issue 44

Luca Danesi et al. / Procedia Structural Integrity 44 (2023) 838–845 L. Danesi et al./ Structural Integrity Procedia 00 (2022) 000–000

844

7

The second set of analyses considered the infills as diagonal strut elements. The reference values in terms of story shear and inter-story drift have been calculated through nonlinear static analyses (Table 4). The results of the analyses show that only 4 earthquakes led to the nonlinear behavior of the plastic hinges and to overcome the yielding shear force in, at least, one floor (Fig. 3).

Table 4. RC Frame characteristics in term of story shear and inter-story drift with infills

F y [kN]

d y [mm]

F u [kN]

d u [mm]

Floor

1 2 3 4

703 644 625 589

10.9 11.3 11.0 10.9

454 213 173 141

45.5 64.8 92.7

125.9

DAMAGE INDEXES (Mom-Rot)

-0,1 0,1 0,3 0,5 0,7 0,9 1,1 1,3 1,5 Lybas and Sozen

Powell and All Ahabadi

FDR Banon

L'Aquila - M6- Dist. A - H1 L'Aquila - M6- Dist. A - H2

Wang and Shah II (η = -1)

Banon and Veneziano

Capo del Colle (PG) - M6- Dist. A - H1 Capo del Colle (PG) - M6- Dist. A - H2

Wang and Shah II (η = -3)

Hwang and Scribner

Wang and Shah I

Park and Ang

a.

DAMAGE INDEXES (Force-Displacement)

1,2 1,4 1,6 1,8 2 Lybas and Sozen

Powell and All Ahabadi

FDR Banon

0 0,2 0,4 0,6 0,8 1

L'Aquila - M6- Dist. A - H1 L'Aquila - M6- Dist. A - H2

Wang and Shah II (η = -1)

Banon and Veneziano

Capo del Colle (PG) - M6- Dist. A - H1 Capo del Colle (PG) - M6- Dist. A - H2

Wang and Shah II (η = -3)

Hwang and Scribner

Wang and Shah I

Park and Ang

b. Fig. 3. (a) Damage indexes based on bending moment and rotation; (b) Damage indexes based on shear and inter-story drift.

The same comments related to the RC frame without infills substantially apply in the case with infills except for the shear-drift calculation where the Park and Ang damage index is not able to detect the most damaging earthquake and Wang and Shah (I formulation) overestimates the value. The RC frame with infills highlights that the combination