College of Civil Engineering, Tongji University Advanced Theory of Concrete Structures Chapter 1 Introduction Xianglin Gu College of Civil Engineering, Tongji University gxl@tongji.edu.cn

1.1 Application of Concrete Structures 1.1.1 Buildings Most of the high rise buildings higher than 100m in China were constructed with concrete structures or concrete-steel composite structures Composite column Composite slab Steel column Composite beam Composite truss RC tube

1.1 Application of Concrete Structures 1.1.1 Buildings Most of the high rise buildings higher than 100m in China were constructed with concrete structures or concrete-steel composite structures

1.1 Application of Concrete Structures 1.1.1 Buildings Most of the high rise buildings higher than 100m in China were constructed with concrete structures or concrete-steel composite structures

1.1 Application of Concrete Structures 1.1.1 Buildings Most of the high rise buildings higher than 100m in China were constructed with concrete structures or concrete-steel composite structures

1.1 Application of Concrete Structures 1.1.1 Buildings Most of the high rise buildings abroad were constructed with concrete structures or concrete-steel composite structures too

1.1 Application of Concrete Structures 1.1.1 Buildings Most of public buildings were constructed with concrete or composite structures

1.1 Application of Concrete Structures 1.1.1 Buildings Most of public buildings were constructed with concrete or composite structures

1.1 Application of Concrete Structures 1.1.2 Infrastructures Most of infrastructures such as tunnels, bridges, highway facilities, city viaduct, subway, and so on, were made with concrete structures

1.1 Application of Concrete Structures 1.1.2 Infrastructures

1.1 Application of Concrete Structures 1.1.2 Infrastructures

1.1 Application of Concrete Structures 1.1.2 Infrastructures

1.1 Application of Concrete Structures 1.1.2 Infrastructures

1.1 Application of Concrete Structures 1.1.2 Infrastructures

1.1 Application of Concrete Structures 1.1.3 Special facilities

1.1 Application of Concrete Structures 1.1.3 Special facilities

1.1 Application of Concrete Structures 1.1.3 Special facilities

1.2 State of the Art 1.2.1 Materials High-strength concrete: In 2009, the highest compressive strength 130 MPa was realized in a 220–m-high, 58-story building, the Union Plaza in Seattle, Washington High-performance concrete: In 1990s, a new “concrete” with a compressive strength higher than 200 MPa was developed in France, it was called the ultra-high-strength (performance) concrete (UHSC) Self-compacting concrete (SCC) is another example High-strength steel rebars: 500 MPa steel rebars were recommended as the reinforcement of RC structures by current Chinese design code

1.2 State of the Art 1.2.1 Materials Fiber-reinforced concrete: Concrete containing mortar, aggregate, and discrete fibers Heavyweight concrete for radiation shielding: Unite weight is 3360 to 3840kg/m3 Lightweight concrete: Unite weight is less than 1950kg/m3 Mass concrete: Concrete in a massive structure

1.2 State of the Art 1.2.1 Materials Mechanical behaviors of concrete materials and steel rebars have been deeply understood But the deterioration performances of concrete materials and steel rebars with time have not been studied deeply

1.2 State of the Art 1.2.2 Structural members The failure mechanisms of concrete structural members under tension, compression and bending can be understood, and the failure processes can be modeled and theoretically predicted well The failure mechanisms of concrete structural members under shear and torque can be understood, and the failure processes can be modeled and theoretically predicted approximately But the deterioration performances of concrete structural members with time have not been studied deeply

1.2 State of the Art 1.2.3 Structural systems The plastic behaviors of structural systems can be analyzed based on the behavior of plastic hinges or plastic hinge lines But the collapse or damage process of concrete structural systems can not been simulated well

1.3 Contents of the Course 1.3.1 Objectives Understand the mechanical behavior of concrete and steel materials. Understand the mechanical behavior of reinforced concrete structural members and structural systems Get the general idea of the safety, serviceability, and durability of concrete structures Realize the basic research principles and methods for concrete structures. Realize the design philosophies between different codes (GB50010 and ACI318).

1.3 Contents of the Course 1.3.2 Contents – introduction and materials Chapter 1 Introduction (1) Chapter 2 Mechanical Behavior and Constitutive Relationships of Concrete and Steel Materials (5) Chapter 3 Bond and Anchorage (3)

1.3 Contents of the Course 1.3.2 Contents – structural members Chapter 4 Bending, and Compression Behavior of Reinforced Concrete Structural Members (6) Chapter 5 Shearing Behavior of Reinforced Concrete Structural Members (6) Chapter 6 Torsional Behavior of Concrete Structural Members (3) Chapter 7 Mechanical Behavior of Prestessed Concrete Members (6)

1.3 Contents of the Course 1.3.2 Contents – structural systems Chapter 8 Mechanical Behavior of Continuous Beams and Frames under Vertical Loads (3) Chapter 9 Mechanical Behavior of Concrete Slabs (3) Chapter 10 Mechanical Behavior of Concrete Structures under Earthquake and Accedent Loads (6)

1.3 Contents of the Course 1.3.2 Contents – serviceability and durability Chapter 11 Serviceability of Concrete Structures (3) Chapter 12 Durability of Concrete Structures (3) including Group meeting and discussion (4)

1.4 Teaching and Study Method Teach in classroom Read references and write three reports (20%) Discussion (20%) Take final examination (60%)

Thank you!