Shear Reinforcement: Definition and types of Shear Reinforcement

SaveSavedRemoved 1

Shear reinforcements are reinforcement designed to withstand shear or diagonal stress. In the form of stirrups, shear reinforcement is usually provided to retain the longitudinal reinforcement and also to take the shear to which the structure is subjected.

Table of Contents

Types of Shear Reinforcement

The following three forms of shear reinforcement are used

Vertical Stirrups
Bent Up Bars along with Stirrups.
Inclined Stirrups.

Vertical Stirrups

These are the steel bars that are placed horizontally around the tensile reinforcement at sufficient spacing along the beam’s length. The diameter ranges between 6 mm and 16 mm.
The free ends of the stirrups are fixed to the anchor bars hanger bar or compressive reinforcement in the beam’s compression area.
The spacing of stirrups at the supports is smaller than the spacing near the midspan as the shear pressure at the supports is maximum.
The free ends of the stirrups are fastened to the anchor bars (hanger bar) or the compressive reinforcement in the beam’s compression zone.
The use of narrowly spanned stirrups is recommended to get rid of the diagonal cracks in a better way. The distance of stirrups adjacent to the supports is less related to the distance close to the mid-span, as the shear force at the supports remains extreme.

For More Details: Civil engineering

Type of vertical stirrups:

Single Legged Stirrup
Two-Legged Stirrup
Four-Legged Stirrup
Six-Legged Stirrup.

Bent Up Bars along with Stirrups

Many of the longitudinal bars in a beam may be bent near the supports where they are not needed to survive the moment of bending Bending Time is even less similar to the supports. Such bent up bars can tolerate diagonal stress. To preserve balance, identical amounts of bars will be twisted on all sides.

The bars may be bent evenly around the length of the beam at more than one level..Such bent bars are resistant to diagonal stress. Typically, such bars are bent at 45°. Uses this device with stronger shear forces. The beam’s overall shear resistance is determined by applying bent up bars and vertical stirrups to the input. Bent up bars add little more than half of the overall shear reinforcement.