外环隧道浦西连接井宽43m,基坑最大开挖深度30.4m,结合工程安全、工期、造价等因素,论述支护结构形式的合理选用以及支护结构设计,为软土地区类似深基坑设计提供参考。 The outer ring tunnel Puxi connection well width of 43m, the maximum excavation depth of 30.4m, combined with engineering safety, construction period, cost and other factors, discusses the rational use of support structure forms and support structure design for the soft soil areas similar to deep foundation pit Design for reference.