Research Article

Experimental Study on Mechanical Performance of U-Shaped Steel-Encased Concrete Composite Beam-Girder Joints

Table 1

Mechanical properties of steel and reinforcement.

Type of steelYield strength fy (MPa)Ultimate strength fu (MPa)Elastic modulus Es (MPa)Yield strain εy (×10−6)

Reinforcement (Ф8)4576652.0 × 1052285
Reinforcement (Ф16)4285772.0 × 1052140
Steel plate (4 mm)3826082.06 × 1051854

ε y = fy/Es.