Stress Analysis of Concrete Sections Under Service Load


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Title: Stress Analysis of Concrete Sections Under Service Load

Author(s): Troels Brondum-Nielsen

Publication: Journal Proceedings

Volume: 76

Issue: 2

Appears on pages(s): 195-212

Keywords: bending; cracking (fracturing); creep properties; fatigue (materials); loads (forces);partial prestressing; prestressed concrete; prestressing steels; reinforced concrete; shrinkage;strains; stress analysis; structural analysis.

Date: 2/1/1979

The stress analysis of concrete sections under service load is complicated by the interaction of shrinkage, creep, elastic strains of concrete and steel, and steel relaxation. Further complications arise in the case of partially prestressed concrete structures, with cracked cross sections under service load and with mixed reinforcement consisting of a combination of prestressed and nonprestressed reinforcement with individual mechanical properties and different effective depths. Combinations of sustained and instantaneous loads also complicate the analysis, whereas compound bending is easily taken into account, An analysis is suggested covering these problems in cases of symmetrical bending.