Reinforced concrete box-girder section - rcbgs

This is a section frequently adopted for the modelling of hollow-core concrete girders.

Materials and Dimensions

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

The required dimensions are as follows:

• Height under flanges. The default value is 1.2 m
• Top width. The default value is 3 m
• Base width. The default value is 2.2 m
• Web thickness. The default value is 0.35 m
• Top thickness. The default value is 0.3 m
• Base thickness. The default value is 0.3 m
• Flange width. The default value is 0.4 m
• Flange height. The default value is 0.3 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 legs, as well as the distance between them.

Important: Be aware that re-bar distance d3 is to be measured from the bottom of the section.

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.