1. General characteristics#

1.1. Geometry#

The three-point flexure beam studied is 5m long. Its section is 0.2x0.5m. Its geometry as well as the positioning of the steels that constitute it are defined on the.

_images/1000000000000368000003CCC6FA11DD0FAE7FD7.png

Figure 1.1-a: Beam plane.

1.2. Material properties#

  • Concrete: resistance class” C30/37 “or” C35/45 “

_images/1000020100000F0400000948DF75976730F7DA08.png

Figure 1.2-a : Examples of answers with the Mazars 1D law.

  • Steel:

FE400: \({f}_{\mathit{yk}}=400\mathit{MPa}\) Tangent module (plastic slope) \({E}_{T}=1200\mathit{MPa}\)

 _images/100002010000015A00000116AA548BCE691F9E64.png

Figure 1.2-b : C C curve stress — deformation of steel.

1.3. Boundary conditions and loads#

Simple press in \(B\): \(\mathit{DY}=0\).

Double press in \(A\): \(\mathit{DX}=\mathit{DY}=\mathit{DZ}=0\) as well as \(\mathit{DRX}=\mathit{DRY}=0\).

Quasi-static loading: monotonic downward displacement \(\mathit{DY}\) applied halfway through \(C\) (3-point flexure test), according to a linear function of time:

\(t\)

\(\mathit{DY}\)

\(\mathrm{0,0}\)

\(\mathrm{0,0}\mathrm{cm}\)

\(\mathrm{3,0}\)

\(\mathrm{-}\mathrm{3,0}\mathit{cm}\)

\(\mathrm{5,0}\)

\(\mathrm{-}\mathrm{5,0}\mathit{cm}\)