v2.05.102 SDLX102 — Structure - ground - parametric structure interaction between two level buildings

Summary:

This test contributes to the validation of Aster‑MISS3D chaining by the frequency coupling method. It represents a typical case of ground coupling between two buildings, i.e. a case of structure-soil-structure interaction. Two twin buildings, each represented by a 1D model of the model and skewer type, are tested, each positioned on a laminated floor and connected by a surface foundation with the same surface area. A harmonic force, with a constant modulus for each frequency between \(\mathrm{0,1}\) and \(20\mathit{Hz}\), is imposed at the top of one of the buildings. In order to speed up the test, we will only calculate two frequencies: 7.3 Hz and 10.4 Hz.

The direct response module at the top of the excited building, as well as the coupled response module at the top of the adjacent building, are tested for various modules of the intermediate link foundation in relation to the values obtained with the extreme connection conditions between the two buildings: completely decoupled or completely rigid foundations. It is shown that by dividing or multiplying by 1000 the constituent module of the structures to assign it to the intermediate link foundation with the flexible foundation hypothesis, we obtain the two limiting cases of connection between the two buildings with only the rigid foundation hypothesis.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions and mechanical loads
• 2. Benchmark solution
  • 2.1. Benchmark results
  • 2.2. Bibliographical references
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
• 4. Summary of results