REFER TO TEXTBOOKS/ DESIGN STANDARDS
Eurocode 2: Design of concrete structures - Part 1-1
Design of concrete structures - Bao Quoc Bui
Special Concrete Structure - NINH LE NGUYEN - DUNG VIET LE - TUNG MANH VO
ASCE/AISC/ACI or Eurocodes
Eurocode 2: Design of concrete structures - Part 1-1
Design of concrete structures - Bao Quoc Bui
Special Concrete Structure - NINH LE NGUYEN - DUNG VIET LE - TUNG MANH VO
Ultimate Limit State-ULS
Serviceability Limit State-SLS
Compressive Strength
Tensile Strength
Creep
Shrinkage
The stress-strain relation
Compressive/tensile
Bending
Shear
Torsion
Instability structure leads to limitation of bearing capacity of beams and columns. Calculation with 1st limit state considering working material up to destroyment limit (steel or concrete). Therefore, the analysis model of the material for the ULS is a nonlinear model.
Exceeded deflection/ crack. Calculation with 2nd limit state considering the structure satisfying normal working conditions. To limit the problem of crack opening due to inelastic plastic deformations that can be given to materials in the linear elastic limit (steel and concrete). Therefore, the analysis model of the material for the SLS is linearly elastic. Can be applied nonlinear model in necessary cases
- Compression/Tension: Concrete is a brittle, composite material that is strong in compression and weak in
tension. Cracking occurs when the concrete tensile stress in a member reaches the
tensile strength due to externally applied loads, temperature changes, or shrinkage.
Concrete members that do not have any type of reinforcement in them will typically
fail very suddenly once the first tension cracks form because there is nothing to prevent
the cracks from propagating completely through the member.
- Creep: When applied loads for a long time, creep can be caused, i.e. stress does not increase but strain increases with time.
When a book is placed on the bookshelf after a long time, the bookshelf deforms
- Shrinkage:
1. Thermal shrinkage: almost can be ignored
2. Hydraulic shrinkage: because the excess water after the poured concrete process does not participate to react with cement.
This amount of water evaporates and causes shrinkage,
which can lead to cracks if it has no methods.
- The stress-strain relation:
Based on the actual behavior of concrete materials, there are 3 possibilities to model the behavior law
1. Parabol-rectangle chart
2. Rectangle chart
3. 2 line chart
Dear readers! Thanks for visiting! Because of a wide range of knowledge, these are some documents that I provide to help those are finding about general concrete calculation.
ASCE 7-16.pdf