BridgePy
AS 5100.4 Stiffness
DPWH Method B
DPWH Method A
Stiffness Calculator
AS 5100.4-2017
Material Properties
G - Elastomer Shear Modulus (MPa)
B - Elastomer Bulk Modulus (MPa)
Bearing Dimensions
a - Parallel to span (mm)
b - Perpendicular to span (mm)
Layer Configuration
External layers (count)
External thickness (mm)
Internal layers (count)
Internal thickness (mm)
Steel plate thickness (mm)
Calculate Stiffness
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Method B
DPWH / AASHTO LRFD - Art. 19.5.1
Geometry & Material
L - Length // longitudinal (mm)
W - Width // transverse (mm)
G - Shear Modulus (MPa)
Ls - Span Length (m)
hri - Internal layer (mm)
hrc - Cover layer (mm)
nri - Internal layers
hs - Steel thickness (mm)
Loading
RS1 - Design Reaction (kN)
VS1 Coefficient
DL Reaction (kN)
LL Reaction (kN)
Other Parameters
α
T
- Thermal exp. coeff.
ΔT - Temp. change (°C)
θ
s
- Service rotation (rad)
a
cr
- Creep factor
Fy - Steel yield strength (MPa)
Calculate Method B
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Method A
DPWH / AASHTO LRFD - Art. 19.5.4
Geometry & Material
L - Length // longitudinal (mm)
W - Width // transverse (mm)
G - Shear Modulus (MPa)
Ls - Span Length (m)
hri - Internal layer (mm)
hrc - Cover layer (mm)
nri - Internal layers
hs - Steel thickness (mm)
Loading
RS1 - Design Reaction (kN)
DL Reaction (kN)
LL Reaction (kN)
Other Parameters
α
T
- Thermal exp. coeff.
ΔT - Temp. change (°C)
θ
s
- Service rotation (rad)
a
cr
- Creep factor
Fy - Steel yield strength (MPa)
Calculate Method A
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