Calculation Method of Moment Enlargement Coefficient Considering Effect of Reinforcement Ratio

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Calculation Method of Moment Enlargement Coefficient Considering Effect of Reinforcement Ratio

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[1]Lin Shangshun,Chen Baochun.Calculation Method of Moment Enlargement Coefficient Considering Effect of Reinforcement Ratio[J].Journal of Zhengzhou University (Engineering Science),2016,37(05):33-38.[doi:10.3969/j.issn.1671-6833.2016.05.007]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 37 Number of periods: 2016 05 Page number: 33-38 Column: Public date: 2016-11-25

Title:: Calculation Method of Moment Enlargement Coefficient Considering Effect of Reinforcement Ratio

Author(s):: Lin Shangshun1;Chen Baochun2; 1. School of Civil Engineering, Fujian Institute of Technology, Fujian Provincial Key Laboratory of New Technology and Informatization of Civil Engineering, Fuzhou, Fujian 350118; 2. School of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116

Keywords:: reinforcement ratio; bending moment enlargement coefficient; load-carrying capacity; eccentrically loaded reinforced concrete column

CLC:: -

DOI:: 10.3969/j.issn.1671-6833.2016.05.007

Abstract:: It has been pointed out in the literature that the moment increase coefficient of reinforced concrete eccentric compression columns is related to the reinforcement ratio, but the calculation of the bending moment increase coefficient in China’s structural design code does not consider the influence of the reinforcement ratio. Therefore, in the collected 33 Based on the data of the root specimen, combined with the finite element analysis carried out, the theoretical analysis was carried out, and the finite element parameter analysis was carried out at the same time. The results show that the curvature influence coefficient in the calculation formula of the bending moment increase coefficient is not only related to the slenderness ratio and eccentricity It is also related to the ratio of ribs; in the case of the same slenderness ratio and eccentricity, the greater the ratio of ribs, the greater the coefficient of bending moment increase. According to the analysis results, a curvature influence coefficient considering the influence of ratio of ribs is proposed The calculation formula was used to verify the calculation accuracy of the formula by using the collected literature samples.

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