卡轨式平移技术在上海宝山路地铁轨道站桥梁改造中的应用研究

Application of Rail-Clamping Sliding Technology in Baoshan Road Rail Transit Bridge Renovation

摘要: 上海市轨道交通3/4号线宝山路站接轨改造工程东接驳区涉及3#、L2、J8、J9、J10共五座桥梁的整体平移与精确安装，施工环境复杂，既有运营线路安全保障要求极高。本文以该工程为依托，系统阐述了卡轨式液压同步平移技术的原理、工艺流程、精度控制体系及安全保障措施，重点介绍了PLC液压同步控制系统、移梁基础设计、卡轨平移装置的工程化应用，并对施工过程中的关键质量控制进行了深入分析。工程实践表明，该技术切实可行，桥梁平移定位精度达到毫米级控制要求，为同类复杂环境下的桥梁改造工程提供了重要参考与技术支撑。

Abstract: The eastern transfer zone of Shanghai Rail Transit Line 3/4 Baoshan Road Station junction reconstruction project involves the integral lateral sliding and precise installation of five bridge girders (3#, L2, J8, J9, J10). The construction environment is complex with extremely high safety requirements for existing operating lines. This paper systematically describes the principle, process flow, precision control system and safety measures of the rail-clamping hydraulic synchronous sliding technology based on this project. The engineering application of PLC hydraulic synchronous control system, beam sliding foundation design, and rail-clamping sliding device are highlighted, with in-depth analysis of key control points during construction. Engineering practice shows that this technical solution is feasible, achieving millimeter-level positioning accuracy for bridge sliding, providing important reference and technical support for similar bridge renovation projects in complex environments.