Title: Ultimate Flexural Capacity of Cracked Polygonal Concrete Sections With Circular Holes Under Biaxial Bending

Author(s): Troels Brondum-Nielsen

Publication: Structural Journal

Volume: 84

Issue: 3

Appears on pages(s): 212-215

Keywords: axial loads; bending; biaxial loads; computer programs; cracking (fracturing); flexural strength; hollow-core slabs; strains; limit state design; openings; partial prestressing; prestressed concrete; prestressing; reinforced concrete; structural analysis;

DOI: 10.14359/2643

Date: 5/1/1987

Abstract:
A method of calculating the ultimate flexural capacity of cracked, fully prestressed, partially prestressed, and nonprestressed arbitrary polygonal concrete sections under biaxial bending is presented. The cross section can be reinforced with any combination of prestressed and nonprestressed reinforcement with individual mechanical properties. The method covers symmetrical and unsymmetrical cross sections and cross sections with polygonal and circular holes. The method is suitable for programmable hand-held calculators.