张力 stiffening 对钢筋混凝土圆形截面抗弯刚度的影响。注：这里“stiffening”常见释义为“硬化；加强”等，结合语境可能是专业术语“张力 stiffening”（具体准确含义需结合专业知识进一步确定）。

Influence of Tension Stiffening on the Flexural Stiffness of Reinforced Concrete Circular Sections.

作者信息

Morelli Francesco, Amico Cosimo, Salvatore Walter, Squeglia Nunziante, Stacul Stefano

机构信息

Department of Civil and Industrial Engineering, University of Pisa, 56126 Pisa PI, Italy.

出版信息

Materials (Basel). 2017 Jun 18;10(6):669. doi: 10.3390/ma10060669.

DOI:10.3390/ma10060669

PMID:28773028

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5554050/

Abstract

Within this paper, the assessment of tension stiffening effects on a reinforced concrete element with the circular sections subjected to axial and bending loads is presented. To this purpose, an enhancement of an analytical model already present within the actual technical literature is proposed. The accuracy of the enhanced method is assessed by comparing the experimental results carried out in past research and the numerical ones obtained by the model. Finally, a parametric study is executed in order to study the influence of axial compressive force on the flexural stiffness of reinforced concrete elements that are characterized by a circular section, comparing the secant stiffness evaluated at yielding and at maximum resistance, considering and not considering the effects of tension stiffness.

摘要

本文介绍了对承受轴向和弯曲荷载的圆形截面钢筋混凝土构件的受拉强化效应的评估。为此，提出了对现有技术文献中已有的一个分析模型的改进。通过比较过去研究中的实验结果和该模型得到的数值结果，评估了改进方法的准确性。最后，进行了参数研究，以研究轴向压力对圆形截面钢筋混凝土构件抗弯刚度的影响，比较了在屈服和最大抗力时评估的割线刚度，同时考虑和不考虑受拉刚度的影响。