Adopting which appropriate and economical retaining structure is the difficulty and keystone of the design of foundation pit in uneven soil layer due to the different bearing soil pressure of retaining structure of foundatioti pit.

• 摘要对于土层分布不均匀的基坑，由于基坑支护结构所受的土压力不同，采用何种合适、经济的支护形式，是基坑设计的难点和重点。