世博大道地道与周边项目协同建设方案研究与实践

Research and Practice on the Collaborative Construction of the EXPO Avenue Tunnel and Surrounding Projects

摘要: 多地块一体化开发或相邻地块同期建设的工程体量大、建设周期长、实施工况复杂、工程间相互作用和环境影响效应显著，加上软土蠕变特性显著，工程的安全及环境变形控制困难。本文结合世博大道地道与周边项目协同建设案例，对同步开发项目的安全保障及环境变形控制等难点问题进行解答。世博大道地道紧邻大歌剧院和世博文化公园，三个项目同步开工，涉及基坑群同步开挖及基坑和堆山加卸载问题，该同步建设案例通过项目间的统筹协调及工况调整，既达成了各自的既定工期，又将相互间的影响及环境变形控制在可控范围内，为软土地区同类工程提供参考。

Abstract: Due to the large volume of the project, long construction period, complex implementation conditions, significant interactions between projects, significant environmental impact effects, and significant creep characteristics of soft soil, it is difficult to control the safety and environmental deformation of multi plot integrated development project or the simultaneous construction of adjacent projects. This article combines the case of collaborative construction of the EXPO Avenue tunnel and surrounding projects to answer the difficult issues of safety assurance and environmental deformation control in synchronous development projects. The EXPO Avenue Tunnel is adjacent to the Grand Opera House and Shanghai EXPO Cultural Park, the three projects have started simultaneously, involving synchronous excavation of foundation pits and loading and unloading of foundation pits and mountains. This synchronous construction case achieved their respective predetermined construction periods and controlling the mutual impact and environmental deformation within a controllable range through coordinated planning and working condition adjustment among projects , providing reference for similar projects in soft soil areas.