用T型截面转换成箱型截面的方法加固T梁桥的实例分析

The Case Analysis Method To Reinforce T-Beam Bridge With Cross Section Converting T-typeto Box

以一座设计荷载偏低、病害严重的钢筋混凝土T梁桥的加固改造工程为例,介绍截面转换T转箱加固T梁的基本原理和设计施工方法,结合有限元软件计算分析采用截面转换T转箱加固前后桥梁承载能力、应力及挠度的改善程度。结果表明,经过截面转换加固后,该桥承载能力增强,受力状况及变形得到改善。

Taking a reinforcement and reconstruction project of reinforced concrete T beam bridge with low-designed load and serious damage as an example,the basic principle and the design and construction method of the cross section transformation and reinforcement are clarified,and the calculation and analysis of bridge bearing capacity before and after the reinforcement by convertingbox section to Ttype sectionare performed.The changes of stress and deflection are researched combined with the finite element software.The results show that after converting section and reinforcement,the bearing capacity of the bridge is improved,andthe stress and deflection are significantly reduced.