CONCRETE LIBRARY OF JSCE NO. 28, DECEMBER I996
STRUCTURAL SAFETY EVALUATION AND REMAINING LIFE PREDICTION
OF CONCRETE BRIDGES BASED ON STATISTICAL ANALYSIS
Hidenori MORIKAWA
Ayaho MIYAMOTO
Kazuyoshi TAKEUCHI
This paper describes a practical evaluation method for structural safety and resulting change in service
life of concrete bridges based on only brief material tests. Statistical factor analysis is used to evaluate
the structural safety of actual bridges based on non-destructive loading tests and material tests.
Furthermore, the remaining life based from current maintenance criteria for repair, rehabilitation and
renewal, is discussed by linking results obtained by the presented method and visual diagnosis by bridge
engineers. Finally, an application to an actual bridge is described so as to demonstrate the suitability of
the method.
Keywords
analysis
:
concrete
bridge,
safety
evaluation,
remaining
life,
carbonation,
statistical
Hidenori Morikawa is an Associate Professor in the Department of Architecture and Civil Engineering
at Kobe University, Kobe, Japan. He received his D.Eng. from Kobe University in 1994. His research
interests relate to safety evaluation, durability and seismic diagnosis of concrete bridges. He is a
member of JSCE.
Ayaho Miyamoto is a professor in the Department of Computer Science and Systems Engineering at
Yamaguchi University, Ube, Japan. He received his D.Eng. from Kyoto University in 1985. His current
research activities are in the area of development of integrated management systems for steel and
concrete bridges and establishment of design concept for concrete structures under soft impact loads.
He ia a member of JSCE.
Kazuyoshi Takeuchi is a deputy director of General Affairs Division, Public Works Department, Akashi
Municipal Government, Akashi, Japan. His current works relate to technical investigation on repair,
rehabilitation and replacement of existing structures.