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介绍了在钱江盾构隧道江北明挖段的设计中,针对不同的基坑深度和基坑安全等级,结合工程场地条件和地质情况,对深基坑围护地下连续墙、SMW工法桩、水泥土重力式挡墙及放坡开挖等型式的运用。阐述了软土地区大规模深基坑围护结构设计要点、地下连续墙叠合结构计算要点、隧道上部风塔与主体结构的共同作用的分析要点以及明挖隧道耐久性设计要点,为类似越江隧道岸边明挖段设计提供参考经验。
In the design of the Jiangbei Ming dug section of Qianjiang shield tunnel, according to the different pit depth and the safety level of the foundation pit, according to the engineering site conditions and geological conditions, Cement soil gravity retaining wall and slope excavation and other types of use. The key points of the design of large-scale deep foundation pit retaining structure in soft soil area, the calculation points of the superimposed structure of underground continuous wall, the analysis points of the common action between the upper wind tunnel and the main structure of the tunnel and the design points of the durability of the cut tunnel are similar, Tunnel shore Ming digging section design provides reference experience.