Steel Structures II

Course Information

College	Akashi College	Year	2023
Course Title	Steel Structures II
Course Code	5515	Course Category	Specialized / Compulsory
Class Format	Lecture	Credits	School Credit: 1
Department	Civil Engineering	Student Grade	5th
Term	Second Semester	Classes per Week	2
Textbook and/or Teaching Materials	Kuranishi S. and Nakamura S.: Bridge structure (3rd Ed), Morikita Publishing Co., Ltd. (as a designated textbook), Printed synopses of the lecture are distributed as necessary in a class, Nagai M. : Bridge engineering (2nd Ed), Kyoritsu Publishing Co., Ltd. (as a reference), Hara T., Yamaguchi T., Kitahara T., and Watada Y. : Steel Structures, Corona Publishing (as a reference)
Instructor	MIYOSHI Takao

Course Objectives

This subject aims to help students understand, explain or calculate as follows:
1. Local buckling of plate elements, global buckling of the long column, local-global interaction buckling, parameters and limit value of compression stress regarding the buckling
2. Lateral buckling of flexural members, limit stress value of members subjected to bending moment and shear force, slenderness ratio limit for members and slenderness ratio limit for members
3. Stress and its limit value calculations of simple compression or flexural members
4. Welding type, welding method, structure of welding, weld defect, non-destructive testing and type of welded joint
5. Mechanism of bolted joints, type and mechanical properties of high strength bolt, limit state and limit value of high strength bolted friction joint
6. Mechanical properties, structure, type and design flow of the steel girder bridge and design outline of the main girder and stiffener

Rubric

	Ideal Level	Standard Level	Unacceptable Level
Achievement 1	A student who can sufficiently understand and explain local buckling of plate elements, global buckling of the long column, local-global interaction buckling, parameters and limit value of compression stress regarding the buckling.	A student who can understand and explain local buckling of plate elements, global buckling of the long column, local-global interaction buckling, parameters and limit value of compression stress regarding the buckling.	A student who cannot understand and explain local buckling of plate elements, global buckling of the long column, local-global interaction buckling, parameters and limit value of compression stress regarding the buckling.
Achievement 2	A student who can sufficiently understand and explain lateral buckling of flexural members, limit stress value of members subjected to bending moment and shear force, slenderness ratio limit for members and slenderness ratio limit for members.	A student who can understand and explain lateral buckling of flexural members, limit stress value of members subjected to bending moment and shear force, slenderness ratio limit for members and slenderness ratio limit for members.	A student who cannot understand and explain lateral buckling of flexural members, limit stress value of members subjected to bending moment and shear force, slenderness ratio limit for members and slenderness ratio limit for members.
Achievement 3	A student who can calculate stress and its limit value of simple compression or flexural members without referring a sample example.	A student who can calculate stress and its limit value of simple compression or flexural members with referring a sample example.	A student who cannot calculate stress and its limit value of simple compression or flexural members.
Achievement 4	A student who can sufficiently understand and explain welding type, welding method, structure of welding, weld defect, non-destructive testing and type of welded joint.	A student who can understand and explain welding type, welding method, structure of welding, weld defect, non-destructive testing and type of welded joint.	A student who cannot understand and explain welding type, welding method, structure of welding, weld defect, non-destructive testing and type of welded joint.
Achievement 5	A student who can sufficiently understand and explain mechanism of bolted joints, type and mechanical properties of high strength bolt, limit state and limit value of high strength bolted friction joint.	A student who can understand and explain mechanism of bolted joints, type and mechanical properties of high strength bolt, limit state and limit value of high strength bolted friction joint.	A student who cannot understand and explain mechanism of bolted joints, type and mechanical properties of high strength bolt, limit state and limit value of high strength bolted friction joint.
Achievement 6	A student who can sufficiently understand and explain mechanical properties, structure, type, design flow of the steel girder bridge and design outline of the main girder and stiffener.	A student who can understand and explain mechanical properties, structure, type, design flow of the steel girder bridge and design outline of the main girder and stiffener.	A student who cannot understand and explain mechanical properties, structure, type, design flow of the steel girder bridge and design outline of the main girder and stiffener.

Teaching Method

Outline:

This subject will be conducted followed by Structural Design, so that students can learn indispensable knowledge for design and maintenance of steel structures. In this subject, a professor, who has an experience as an engineer of bridge fabricator and has engaged in design of steel bridges and steel structures, will conduct lecture-style class on design method against buckling of compression and flexural members. In, addition, he will conduct lecture-style class on characteristic, type, structure, design flow of the steel girder bridge as representative steel bridge and welded and bolted joints based on his experience.

Style:

This lecture-style class will include explanation of design examples to improve comprehension of compression and flexural members, welding and high strength bolted friction joint, and steel girder bridge designs. During class, in order to grasp the understanding of each student, professor may proceed with the class while asking the student questions regarding structural mechanics and contents which have already been learned in this subject.

Notice:

This class will be proceeded on the premise that students have learned fundamental knowledge of Structural Mechanics, Steel structure I and Structural Design. In the class, students should try to understand buckling phenomena of compression or flexural members, the mechanism of welding or bolted joints and their design methods, and to be able to conduct design calculation of simple examples on compression members, connection structure, etc. In addition, students should try to understand and explain calculation of design stress and cross-section performance of steel girders.
Students who miss 1/3 or more of classes will not be eligible for evaluation.

Characteristics of Class / Division in Learning

Applicable to Remote Class

Instructor Professionally Experienced

Course Plan

			Theme	Goals
2nd Semester
	3rd Quarter
		1st	Compression members (1) Local buckling, elastic buckling stress, plate width to thickness ratio, minimum plate thickness, and limit value of compression stress against local buckling of unstiffened plate will be explained.	Student can understand local buckling, elastic buckling stress, plate width to thickness ratio, minimum plate thickness, and limit value of compression stress against local buckling of unstiffened plate.
		2nd	Compression members (2) Structure and mechanism of the stiffened plate, local elastic buckling stress and required stiffness ratio of the stiffened plate will be explained.	Student can understand structure and mechanism of the stiffened plate, local elastic buckling stress and required stiffness ratio of the stiffened plate.
		3rd	Compression members (3) Minimum plate thickness of the panel with stiffener, limit value of the compression stress of the stiffened plate against local buckling and plate width to thickness ratio of stiffened plate will be explained.	Student can understand minimum plate thickness of the panel with stiffener, limit value of the compression stress of the stiffened plate against local buckling and plate width to thickness ratio of stiffened plate.
		4th	Compression member (4) Limit value of compression stress against global buckling, buckling curve, limit slenderness ratio and width to plate thickness parameters for yielding will be explained.	Student can understand limit value of compression stress against global buckling, buckling curve, limit slenderness ratio and width to plate thickness parameters for yielding.
		5th	Compression member (5) Calculation method of stress and its limit value of compression member with several boundary conditions will be explained.	Students can calculate stress and its limit value of compression member with several boundary conditions.
		6th	Flexural members (1) Lateral buckling and buckling parameter of flexural member will be explained.	Student can understand lateral buckling and buckling parameter of flexural members.
		7th	Flexural members (2) Calculation method of bending compressive, tensile stresses and their limit values of simple flexural member will be explained.	Students can calculate bending compressive, tensile stresses and their limit values of a simple flexural member.
		8th	Shear members Stress calculation method and its limit value of shear members, limit value of slenderness ratio will be explained.	Students can understand and calculate stress and its limit value of shear members, limit value of slenderness ratio.
	4th Quarter
		9th	Mid term exam
		10th	Welded joint (1) Welded joints of the steel member and welding method will be explained.	Students can understand welded joints of the steel member and welding method.
		11th	Welded joint (2) Weld defect, non-destructive testing, type of the welded joint, technical terms used to indicate structure of weld portion, and limit state of the welded joint will be explained.	Students can understand Weld defect, non-destructive testing, type of the welded joint, technical terms used to indicate structure of weld portion, and limit state of the welded joint.
		12th	Bolted joint (1) Outline of high strength bolted joints and type of high strength bolt will be explained.	Students can understand and explain mechanism of high strength bolted friction joint, high strength bolted bearing-type joint and high strength bolted tensile joint, characteristic and type of high strength bolt.
		13th	Bolted joint (2) Limit state and limit value of the high strength bolted friction joint and net cross-sectional area will be explained.	Students can understand limit state and limit value of the high strength bolted friction joint. Also, students can calculate net cross-sectional area of simple high strength bolted friction joint.
		14th	Steel girder bridge (1) Mechanism and structural type of the plate girder, composite / non- composite girder, classification of the girder bridge depending on its support condition will be explained.	Students can understand mechanism and structural type of the plate girder, composite / non- composite girder, classification of the girder bridge depending on its support condition.
		15th	Steel girder bridge (2) Design flow of the steel girder bridge, design outline of the girder cross-section and stiffener will be explained.	Students can understand design flow of the steel girder bridge, design outline of the girder cross-section and stiffener.
		16th	Final exam

Evaluation Method and Weight (%)

	Examination	Behavior	Total
Subtotal	90	10	100
Specialized Proficiency	90	10	100