Abstract
The paper describes a current UK research project designed to determine the true extent of possible soil load transfer to a liner pipe in a range of realistic worst case scenarios. The following has been established from the experimental test results: the centrifugal modelling technique can succesfully simulate the effects of host pipe deterioration, the formation and collapse of voids in the soil surrounding a sewer before and after renovation by lining, and moving traffic loads; in adjusting to deterioration events; the existing pipe/soil structure imposes small, quantifiable out-of-round deflections on the liner pipe, and the deformation response is predominantly one of bending; and, the relationship between liner deformation and ground loss to voids is a function of void position but does not appear to be sensitive to the timing and sequence of host pipe deterioration events.
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