[1]陈萌..钢筋混凝土深受弯构件的受剪机理分析[J].郑州大学学报(工学版),2003,24(04):63-66.[doi:10.3969/j.issn.1671-6833.2003.04.015]
　CHEN Meng..Analysis of the shear mechanism of reinforced concrete deeply bent members[J].Journal of Zhengzhou University (Engineering Science),2003,24(04):63-66.[doi:10.3969/j.issn.1671-6833.2003.04.015]

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钢筋混凝土深受弯构件的受剪机理分析()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

24

期数:

2003年04期

页码:

63-66

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Analysis of the shear mechanism of reinforced concrete deeply bent members

作者:

陈萌.

武汉理工大学土木工程与建筑学院,湖北,武汉,430070;郑州大学土木工程学院,河南,郑州,450002

Author(s):

CHEN Meng.

关键词:

深受弯构件;  抗剪强度;  桁架拱

Keywords:

deeply bent members;  shear strength;  Truss arch

DOI:

10.3969/j.issn.1671-6833.2003.04.015

文献标志码:

A

摘要:

桁架拱计算模型适合钢筋混凝土深受弯构件的受力特点.针对模型中混凝土斜腹杆斜向传递压力时的应力扩散现象,进一步修正了该模型.引用混凝土在双向应力状态下的强度准则,并结合工程实际,提出了考虑剪跨比、跨高比、垂直腹筋和水平腹筋影响的受剪承载力实用计算公式,公式中混凝土作用项以混凝土抗拉强度作为强度设计指标,已被我国混凝土结构设计规范所采用.修正后的计算模型物理概念明确,力学分析严密,对完善深受弯构件的抗剪强度设计理论有重要的参考意义.

Abstract:

The calculation model of truss arch is suitable for the stress characteristics of reinforced concrete bending members. According to the stress diffusion phenomenon of concrete diagonal stud when pressure is transmitted obliquely in the model, the model is further modified. Referring to the strength criterion of concrete in bidirectional stress state, and combined with the actual engineering situation, a practical calculation formula for shear bearing capacity considering the influence of shear span ratio, span height ratio, vertical abdominal tendon and horizontal abdominal tendon is proposed, and the concrete action term in the formula takes concrete tensile strength as the strength design index, which has been adopted by China’s concrete structure design code. The revised computational model has clear physical concepts and strict mechanical analysis, which has important reference significance for improving the design theory of shear strength of deeply bent members.

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