PSI - Issue 82

Addisu Bonger et al. / Procedia Structural Integrity 82 (2026) 30–36 Addisu et al. / Structural Integrity Procedia 00 (2026) 000–000

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5

a

b

Rebar

After application of EDIC Wada et al. (2021)

Before application of EDIC

Cup-shaped concrete fractures connecting the cartridges to the heads of the stud dowels

Steel girder

c

Pressure concentration inside cartridge l

Inflation of gas pressure

Pressure released through cracks

at 13 μs

at 1 μs

at 350 μs

d

Deformation of rebars and stud dowels

Section used for rebar deformation measurement.

Concrete

Rebar

dowel

at 350

Steel girder

eflection 20x

at 350 μs

e

Stud dowel element used for strain measurement.

Steel girder element measurement.

Deflection 20x

at 350 μs

Steel girder with a yield strain of 1,905 μ

Stud dowel with a yield strain of 1,905 μ

Fig. 3. Numerical simulation results in a model based on the specimen A (a) before and after the action of EDICS in the experiment (Wada et al., 2021)); (b) final crack pattern by analysis; (c) pore pressure inside the specimen in specific time-steps; (d) deformation in rebars; (e) strain in the stud dowels and in the girder in specific elements.