Composite column

What is the type of composite column shown here?

• Partially concrete encased steel section

• Fully concrete encased steel section

• Tubular steel column

• Square concrete filled steel tube

What is the type of composite column shown here?

• Square infilled concrete

• Fully concrete-encased steel section

• Partially concrete-encased steel section

• Steel tubular column

What is the type of composite column shown here?

• Composite column with inner core

• Partially concrete encased steel section

• Fully concrete encased steel section

• Concrete-filled steel tube with reinforcement

Compare the advantages of fully concrete encased and partially concrete encased sections.

Compare the disadvantages of fully concrete encased and partially concrete encased sections.

What are the advantages of concrete-filled circular steel tube compared to fully encased steel section?

Lateral expansion that occurs in concrete under axial compression will cause circumferential tension in the steel tube and triaxial compression in the concrete. This reduces the crushing strength of the concrete.

• True

• False

The confinement effect is not significant in concrete-filled rectangular tubes because less circumferential tension can be developed in the steel tube.

• True

• False