Analysis of Stress Distribution of Externally Pre-Stressed Beams under Transverse Loads

Abstract:

The size, the position and the arrangement of external restraint will significantly affect the mechanical properties of the structures with the external restraint. Based on classical beam theory, the stress distribution of a simply supported beam with externally reinforcing steel bars under transverse loads is analyzed in this presentation. By assuming that the stresses in both the beam and the external constrains are less than their proportional limits, an analytical formulation of normal stress in the cross section of the beam was derived by considering two cases that the externally reinforcing steel bars are pre-stressed and are not pre-stressed. Influences of the parameters of the stiffness and the position of the externally reinforcing steel bars on the stress of the beam are discussed.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 3065-3070
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.3065
• Online since: May 2012
• Authors: Peng Zhang, Dan Shen, Shi Rong Li
• Keywords: Euler-Bernoulli Beam Theory, External Restraint, Parameter Analysis

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