集中荷载下具有反弯点的钢筋混凝土构件的抗剪强度研究

• 作 者: 吴智眉 李珍 王丽妍
• 机 构: 天津大学土木工程系,天津大学土木工程系,天津大学土木工程系
• 出 处: 天津大学学报
• 发表日期: 1984年02期
• 关键词: 反弯点 抗剪强度 混凝土构件 约束梁 钢筋 集中荷载 剪跨比 计算公式 集中荷载作用 斜裂缝

鉴于我国现行《钢筋混凝土结构设计规范》中抗剪强度公式用于计算连续梁、约束梁和框架结构的梁和柱等构件常偏于不安全问题,本文进行了集中荷载作用下具有反弯点的钢筋混凝土构件的抗剪强度的试验研究,综合分析了国内外连续梁、约束梁和反对称荷载作用下构件的抗剪强度共170个试验资料,探讨了受荷时具有反弯点的构件抗剪强度的影响因素及其降低原因,并提出了两个建议计算公式,与试验结果吻合较好。

In view of the fact that the shear strength formula used in China’s current “Code for Design of Reinforced Concrete Structures” is used to calculate the continuous beams, restrained beams, and beam and column structures of frame structures, which are often unsafe, the steel bars with anti-bending points under concentrated loads are used in this paper. The experimental study on the shear strength of concrete members comprehensively analyzes 170 test data of shear strength of continuous beam, restrained beam and anti-symmetrical load components at home and abroad, and discusses the shear resistance of components with inverse bending points when loaded. The influencing factors of the strength and the reasons for the reduction, and put forward two proposed formulas, which are in good agreement with the test results.