一种提高新旧混凝土界面传力设计方法及应用

Design Method and Application for Improving the Force Transmission between New and Old Concrete Interfaces

介绍一种可提高新旧混凝土界面传力的设计方法,提出承载力计算参考公式,可量化计算截面传递界面剪力,通过工程算例深化其计算方法。最后根据一个实际工程应用,验证该方法可行性。分析结果表明,采用该方法设计新旧混凝土界面,增加界面机械咬合力,可有效提高传力效果,保证结构安全可靠。

The paper introduces a design method that can improve the force transmission between new and old concrete interfaces. It proposes a reference formula for bearing capacity calculation,which can quantify the shear force of the cross-section transmission interface and deepen its calculation method through engineering examples. Finally,according to an actual engineering application,the feasibility of the modified method is verified. The analysis results show that the design of new and old concrete interface and the increase of interface mechanical bite force can effectively improve the force transmission effect and ensure the structure is safe and reliable.