Abstract: This invention relates to a mounting structure for a tubular turbine having a horizontal or slightly inclined machine axis, particularly a Kaplan-type tubular turbine, and whose supporting forces act at a right angle to the duct wall of said turbine, on one hand, and parallel to said duct wall, on the other hand, and are absorbed by supporting plates equipped with foundation anchors in said duct wall, comprising a knife-edge suspension means connected to said turbine housing and in engagement with one of said supporting plates, and adapted to lead that portion of said supporting forces acting at a right angle to said duct wall into a foundation, and elastic member means connected to said supporting plate and to a support for said suspension means, and adapted to absorb that portion of said supporting forces acting parallel to said duct wall.