The document discusses the stress distribution in the end block of an anchorage zone, highlighting the regions of compressive and tensile stresses based on the curvature of struts. Zone A experiences compressive stresses, Zone B develops transverse tensile stresses due to outward strut deflection, while Zone C only has longitudinal stresses. The idealized stress distribution and bursting tension linked to the anchorage force are also presented.

1. UNIT III
DEFLECTION AND DESIGN
OF ANCHORAGE ZONE
Mr.P.SELVAKUMAR
Assistant Professor
Department of Civil Engineering
Knowledge Institute of Technology, Salem

2. Stress distribution in end block
• The curvature of the struts being convex towards the centre line of
the block, induces compressive stresses in zone A.

3. • In zone B the curvature is reversed in direction and struts tends to
deflects outwards, separating from each other and consequently
developing transverse tensile stresses.
• In zone C the struts are straight and parallel so that no transverse
stresses are induced only longitudinal stresses develop the zone.

4. • The idealised stress distribution in end block with the compressive
and tensile stress path is shown below.
• The bursting tension in the direction perpendicular to anchorage
force

5. Magnel’s Method

6. Thank You
KIOT, SALEM / CIVIL ENGINEERING