Reinforced concrete circular hollow section - rcchs

This is a section frequently adopted for the modelling of circular hollow piers, in reinforced concrete bridges.

Materials and Dimensions

Three different materials can be defined; longitudinal reinforcement, transverse reinforcement, concrete.

The required dimensions are as follows:

• Outer section diameter. The default value is 0.9 m
• Inner section diameter. The default value is 0.65 m
• Cover Thickness. The default value is 0.025 m

Reinforcement

Longitudinal reinforcement bars can be defined in two different ways:

1. by editing the reinforcement pattern;
2. by entering the respective area and sectional coordinates (the latter being defined in the local coordinate system of the section).

Further, the transverse reinforcement may be specified, in terms of the stirrups' diameters and distance between them, as well as to select a circular or spiral arrangement.

Notes

1. The confined concrete region is automatically computed by the program using the R/C cover thickness.
2. All re-bars must be located within the confined concrete region.