In the field of prefabricated bridge construction, the hydraulic jack driven push method has become one of the core technologies for continuous beam bridge construction due to its unique advantages, especially suitable for special scenarios such as crossing deep valleys, rivers, and busy traffic sections. This technology takes prefabrication yard as the core, standardizes the production of beam segments, and then uses the precise driving force of hydraulic jacks to push the beam segments forward section by section along the sliding track at the top of the bridge pier, ultimately completing the assembly and forming of the bridge body, greatly improving the construction efficiency and safety in complex environments.

The core logic of the top push method construction is "prefabrication and propulsion parallel". Before construction, a standardized prefabrication yard is built on one side of the bridge site, and the beam body is poured in sections according to the design parameters. After the concrete strength meets the standard, the beam section is smoothly pushed to the designated position through the collaborative operation of hydraulic jacks and slide systems. As the power core, hydraulic jacks have the characteristics of controllable thrust and precise action. They can adjust the output force in real time according to the weight of the beam section and the pushing resistance, avoiding the risk of cracking caused by uneven force on the beam body. At the same time, they cooperate with guiding devices to ensure that the deviation of the beam section's pushing trajectory is controlled at the millimeter level.

Compared to traditional cast-in-place construction, the top push method does not require the construction of large-scale supports, especially when crossing rivers, which can avoid the interference of underwater foundation construction on the aquatic ecology; When construction is carried out in busy traffic areas, it can minimize the obstruction of existing traffic and achieve "simultaneous construction and passage". In addition, the factory production of prefabricated beam segments can effectively control the construction quality, reduce the impact of natural factors such as weather on on-site operations, shorten the overall construction period, and provide reliable technical support for the efficient construction of large continuous beam bridges.