Models for Simulating the Seismic Response of Concrete Structures - Dynamic Behavior of Concrete and Seismic Engineering - page 260

Vertical
force

Initial model Recalibrated

model

Tests (kN)

Nice 0.25 g 115 119 138

S-F 1.13 g 150 160 198

Nice 0.40 g 119 132 146

Nice 0.71 g 140 190 248

Figure 7.18. Connection between closing up stress and dynamic variation of the load at the
bottom of the model. In the upper left hand corner, uniaxial response of the model for two
values of V f (3.5 and 1.35 MPa). In the upper right hand corner, consequences on the
variation of the vertical load at the bottom. Below, table of the maximum values of the
compressive vertical load at the model-table interface

7.4.2.1.2. Two-dimensional discretization and plasticity models

As the stress is horizontal and parallel to the planes of the walls, half of the
structure is modeled using a biaxial local approach. An example of the complete FE
mesh of the model is presented in Figure 7.19. The mesh of the wall was chosen so
that the connection with the steel elements could be made in a position quite close to
the exact position, in accordance with the reinforcement layout. The mesh allows the
bar stoppers to be reproduced, as well as the concrete construction joints. Two-node
bar elements have been used to represent the reinforcement.