Prestress-plan Optimization of Spillway Gate Middle-pier of Bakun Hydropower Station in Malaysia

摘要

Applying the three dimensional finite element method, the bearing properties of a spillway gate middle-pier was calculated. To eliminate the concrete tensile stress in pier support area as large as possible, the effects of anchor-plan of prestress cable, tonnage of cable, spread angle of main cable and arrangement of second cable on the stress distribution and peak value were analyzed. The results of prestress-plan optimization were proposed.