ULTIMATE STRENGTH EVALUATION METHOD OF RADIAL GATE STRUT ARMS

Abstract

  This paper describes static tests and numerical simulations of radial gates under hydrostatic and hydrodynamic loads resulting from strong earthquakes. The tests were conducted using 1/4 scale models and revealed that failure modes are weak axis buckling of the strut arms. The result of the tests and the simulations were summarized as an ultimate strength evaluation method focused on the buckling of the strut arms. The method includes evaluation procedures, key points and accuracy, which are classified into three categories: design strength of compressive buckling members, finite element elastoplastic analyses and model loading tests.