基于目前较多复杂的交通桥梁抢险工程,本文提出了在原有桥梁下方搭建临时便桥的方案,与原桥梁联合为一体,共同承担上部荷载,来应对交通应急需要。通过赣江大桥抢险工程实例,从方案设计理念、理论计算分析等方面,对搭建桥下临时便桥技术进行了深入的讨论和研究,得出了搭建桥下临时便桥设计理念在桥梁抢险工程实践中具有较好的应用效果和应用价值。 Based on the current more complex traffic bridge rescue project, this paper proposes a temporary bridge under the original bridge to build the program, with the original bridge as a whole, to share the upper part of the load, to meet the traffic emergency needs. Through the example of emergency rescue project of Ganjiang River Bridge, this paper discusses and discusses in depth the technology of temporary temporary bridge under bridge construction from the aspects of scheme design, theoretical calculation and analysis, and draws the conclusion that the design concept of temporary bridge under bridge construction is in the practice of bridge rescue engineering Has good application and application value.