Scientific Development Research

The jacking construction of a railway underpass municipal road frame bridge must balance railway operation safety and municipal road traffic efficiency. Under complex geological conditions, this technique is prone to issues such as box structure deviation and subgrade settlement. Focusing on solving practical construction challenges, this paper analyzes the key technical aspects of the jacking process, including control of box prefabrication accuracy, optimization of jacking force calculation, and reinforcement measures for existing railway lines. Targeted technical improvement schemes are proposed to enhance construction stability and quality, providing practical references for similar projects and promoting coordinated development of railway and municipal transportation infrastructure.

Railway frame bridge; Jacking construction; Underpass municipal road; Construction technology optimization; Subgrade settlement control