Rehabilitation and Maintenance of Drains and Sewers / Prof. Dr.-Ing. D. Stein, Dipl.-Ing. R. Stein (2004)

Chicurel

Also Chicurel [Chicu68] investigated the buckling behaviour of a thin elastic externally coated ring in similarity to the stability theory of the arched girder [Timos61]. However, he assumed that the inner ring experiences the external loading because of a reduction of the diameter as could occur in shrinkage processes. Although this statement does not correspond exactly to the relationship of a liner under external water pressure it seems, up to the point of buckling to be near to reality. The critical buckling pressure is then determined by:

Rehabilitation and Maintenance of Drains and Sewers / Prof. Dr.-Ing. D. Stein, Dipl.-Ing. R. Stein (2004)