Abstract: In order to analyze the role of vertical additional force on the shaft wall under deep alluvium when considering temperature effect, the temperature stress analytical formula of shaft wall is established，included the temperature self stress produced by temperature difference between inside and outside wall and the temperature stress produced by radial expansion hindered. Based on the fact that the rupture of shaft wall in the deep alluvium is due to the vertical stress of the shaft wall exceeding the limit of the reinforced concrete strength, the vertical stress components in the shaft wall are analyzed, which are produced by the temperature load, dead weight, horizontal lateral pressure and vertical additional force. The results show that the vertical additional force is the most important factor to lead to shaft wall fracture and the temperature stress is also an important factor of shaft wall fracture. Considering the rupture characteristics of shaft wall, the maximum value of vertical additional force which is caused by the settlement of the strata drainage is gotten through inverse analysis based on shaft lining structure design theory. And the reference is provided for the design and safety assessment of shaft walls in future.

Key words: deep alluvium, rapture, temperature stress, vertical additional force, inverse analysis