Course Title : Structural Design

Code 10F009
Course Year Master and Doctor Course
Term 1st term
Class day & Period Fri 2nd
Location C1-173
Credits 2
Restriction No Restriction
Lecture Form(s) Lecture
Language English
Instructor Kunimasa Sugiura, Tomomi Yagi, Yoshiaki Kubota, Yoshikazu Takahashi

Course Description

This course provides the knowledge of the structural planning and design for civil infrastructures. Fundamentals of the reliability of structures based on the probability and statistics are given. Emphasis is placed on the reliability index and the calibration of partial safety factors in the LRFD design format. Furthermore, the structural morphology, aesthetics and case studies of structural design that satisfies “utilitas, firmitas and venustas” are given. Then we discuss what the holistic structural design should be.


Assessed by term-end examination, reports and quizes

Course Goals

To understand the structural planning and design for civil infrastructures.
To understand the reliability-based design of structures.
To deepen the understanding of aesthetics of structures.

Course Topics

Theme Class number of times Description
Structural Planning 2 Structural Planning of civil infrastructures is introduced. The concept, significance of planning, characteristics of civil infrastructures are discussed. Practical planning process of a bridge is explained.
Modern Excellent Designs 1 The excellent examples of modern structural design are introduced from the viewpoint of the structural system and the urban design. Then the importance of integrated design of urban infrastructure as a place of human activities and how the design should be are lectured.
Structure and Form 2 The bridge types, for example, girder, truss, and arch etc. that have been regarded individually, are lectured as an integrated holistic concept from the viewpoint of the acting forces to understand the structural continuity, symmetry and the systems. Furthermore, the methods of the operation of structural form are given.
Structural Design and Performance-based Design 3 Design theory of civil infrastructures is introduced. The allowable stress design method and the limit state design method are explained. The basic of earthquake resistant design is discussed based on the dynamic response of structures. Performance-based design is also introduced.
Random Variables and Functions of Random Variables 1 Fundamentals of random variables, functions of random variables, probability of failure and reliability index in their simplest forms are lectured.
Structural Safety Analysis 3 Limit states, probability of failure, FOSM reliability index, Hasofer-Lind reliability index, Monte Carlo method are lectured.
Design Codes 2 Code format as Load and Resistance Factors Design (LRFD) method, calibration of partial safety factors based on the reliability method are given.
Assessment of the Level of Attainment 1 Assess the level of attainment.


Reliability of Structures, A. S. Nowak & K. R. Collins, McGraw-Hill, 2000


U.Baus, M.Schleich, "Footbridges", Birkhauser, 2008(Japanese ver.: "Footbridges"(translated by Kubota, et al.), 鹿島出版会, 2011)
久保田善明, 『橋のディテール図鑑』, 鹿島出版会, 2010
Other books will be given in the lectures as necessary.


Fundamental knowledge on Probability and Statistics, and Structural Mechanics

Web Sites

Additional Information

Structural planning and design will be given by Y. Takahashi, Excellent designs and structure & forms by Y. Kubota, and Structural reliability analysis by K. Sugiura and T. Yagi.