Specifications for Highway Bridges Masahiro Ishida Public Works Research Institute JAPAN.
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Specifications for Specifications for Highway Bridges Highway Bridges Masahiro Ishida Public Works Research Institute JAPAN
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Transcript of Specifications for Highway Bridges Masahiro Ishida Public Works Research Institute JAPAN.
Specifications for Specifications for Highway BridgesHighway Bridges
Masahiro Ishida
Public Works Research Institute
JAPAN
Specifications for Highway BridgesSpecifications for Highway Bridges (Japan Road Association)(Japan Road Association)
•Part I : Common design principles•Part II : Steel bridges•Part III : Concrete bridges•Part IV : Substructures•Part V : Seismic design
Discussing Discussing NEXT Design CodeNEXT Design Code
Performance Based Design CodeLimit State Design Partial Safety Factors
Hierarchy of performance-based codes
LEVEL 2Functional Statement
LEVEL 3Performance Requirement
LEVEL 1Objectives
LEVEL 5Deemed-to-satisfy
LEVEL 4
Performance-based method
Figure 3. Confidence level of 95 % (SPP in sand subsoil layers)
0 10 20 30 40 50 600
20
40
60
80
100
120
140
160
N blow count
f (k
N/m
2 )
z=10
z=5
z=3
Figure 4. Estimated modification factors for popular piling methods
Figure 5. Estimated modification factors for innovative piling methods
Estimated modification factors for popular piling methods
Estimated modification factors for innovative piling methods
