A Method for Checking Eccentricity of Solid Concrete Piers with Low Longitudinal Reinforcement Ratio under a Minor Earthquake

Abstract:

Solid concrete piers with low longitudinal reinforcement ratio are extensively used in high-speed railway in China. However, how to check such structures is not specified in current technical codes. Checking these structures by eccentricity and stress indexes is discussed hereby. The moment-curvature relationships for piers of various reinforcement ratios are presented by employing the software UCfyber and these moments are compared with moments calculated by allowable stress approach, moments corresponding to the code-specified permissible eccentricity, moments corresponding to the allowable reinforcement stress and stabilizing moments induced by tensile reinforcement and self-weight of the piers, respectively. The results show that the allowable stress approach could be used to check the strength and eccentricity of solid concrete piers with low longitudinal reinforcement ratio in high-speed railway; the restriction on permissible eccentricity may be to a proper extent relaxed for such piers, based on the fact that tensile reinforcement provides an additional stabilizing moment and the reinforcement contributes to the pier’s bearing capacity.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 1515-1520
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.1515
• Online since: July 2014
• Authors: Xing Chong Chen, Zun Wen Liu, Yong Liang Zhang, Lu Pei
• Keywords: Checking Parameters, Concrete with Low Longitudinal Reinforcement Ratio, Minor Earthquake, Solid Pier

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