Finite Element Analysis for Stiffened Steel Lined Reinforced Concrete Penstock

Stiffening rings has a greater impact on the equivalent stress of steel, especially when the stiffening ring has proper spacing and the large rigidity, the stiffening ring will share part of the load, so it can lead to the circumferential stress of steel reduce. Selecting the appropriate stiffening ring spacing and sizes, you can improve the stress state of steel, so that the total amount of steel pipe is relatively more saving. In this paper, using the finite element method to do the finite element simulation analysis for the stiffened steel lined reinforced concrete penstock of Shuikou Hydropower Station, researched the distribution characteristics of stress and deformation, stress stiffening ring and the surrounding concrete, the deformation distribution and the influence of stiffening ring to the steel liner, outsourcing concrete stress distribution. The results show that Shuikou Hydropower Station using the structure of stiffened steel lined reinforced concrete penstock is economic rationality, the structure is safe and reliable, and it is able to meet the design requirements. The research can provide a reference to the design and construction of stiffened steel lined reinforced concrete penstock.