1 Introduction
2 Experimental Program
Specimen | Joint type |
---|---|
MG | Monolithic girder |
SGSP | Splice girder + shear key + post-tension |
SGP | Splice girder + post-tension |
SGSS | Splice girder + shear key + steel rod |
SGS | Splice girder + shear key |
SG | Splice girder |
2.1 Specimens
2.2 Materials
Type | Diameter (mm) | Area (mm2) | Unit weight (kg/km) | Elongation (%) |
---|---|---|---|---|
SWPC7B | 12.7 | 98.7 | 774 | 3.5 |
Type | Yield strength (MPa) | Tensile strength (MPa) | Modulus of elasticity (GPa) | Elongation (%) |
---|---|---|---|---|
GCD50 | 414 | 562.1 | 166.8 | 16.0 |
Type | Diameter (mm) | Area (mm2) | Yield strength (MPa) | Tensile strength (MPa) |
---|---|---|---|---|
SS400 | 28 | 615.8 | 250 | 400 |
2.3 Test Setup
3 Test Results
3.1 Crack and Failure Modes
3.2 Strain and Load–Displacement Relations
Specimen | Pmax (kN) | δ (mm) | Δmax/Δyield |
---|---|---|---|
MG | 879.6 | 30.86 | 2.19 |
SGSP | 760.1 | 22.5 | 3.52 |
SGP | 646.7 | 30.15 | 2.91 |
SGSS | 581.6 | 18 | 2.06 |
SGS | 380 | 11.3 | 1.92 |
SG | 290.7 | 7.12 | 1.38 |