单拱暗挖车站上穿既有地铁线施工技术

摘要

目前，建筑行业发展速度日益加快，现代建筑工程项目普遍存在复杂性和特殊性，这给工程施工带来一定的难度。在既有地铁线上方进行施工时，若卸载其顶部，会引起既有地铁结构发生变形；而在地铁运营中，对隧道结构的质量要求非常严格，因此，需采取科学合理的施工方法来控制施工中存在的质量问题。针对这种情况，就单拱暗挖车站上穿既有地铁线施工技术展开了讨论和分析，结合实际情况，采用先进、合理的施工技术，有效地控制了地铁结构的不均匀沉降和变形问题，不但保证了既有地铁的正常运行，而且还提高了既有地铁的使用寿命。%At present, the rapid pace of development of the construction industry, the prevalence of modern construction project complexity and specificity, which brings some difficulties to the construction. When both parties subway line construction, if uninstalling the top, it will cause the existing subway structure deformation; while in the subway operations, the quality of the tunnel structure requirements are very strict, therefore, need to take a scientific and rational way to control construction construction quality problems. For this case, the station wearing a single arch Undercutting existing subway line started construction technology discussion and analysis, combined with the actual situation, the use of advanced technology, reasonable construction techniques, effective control of uneven subsidence and deformation of subway construction problems not only to ensure the normal operation of the existing subway, but also improve the life of the existing subway.