AUTOMATIC DETERMINATION METHOD FOR LOAD DISTRIBUTION RATIO OF INDETERMINATE STRUT-TIE MODEL AND RECORDING MEDIUM FOR THE METHOD

摘要

A method for determining a load distribution ratio of an indeterminate strut-tie model automatically and a recording medium for the same are provided to design a reinforced concrete structure member reasonably by automatically determining the load distribution ratio needed when the reinforced concrete structure member is designed by using the indeterminate strut-tie model. A main load transfer mechanism of a reinforced concrete structure member is defined and an indeterminate strut-tie model reflecting the main load transfer mechanism is formed(S1). Stiffness and a material forming model of each strut/tie of the indeterminate strut-tie model are determined(S2). A load distribution ratio of the main load transfer mechanism is determined by performing an inelastic structure analysis procedure of the indeterminate strut-tie model based on the determined stiffness(S3). The final load distribution ratio is determined when the determined load distribution ratio satisfies a ductile equilibrium reinforce bar ratio condition, which is the condition breaking the strut and the tie at the same time(S4). A previous stage is repeatedly performed when the determined load distribution ratio satisfies the ductile equilibrium reinforce bar ratio condition by changing the stiffness.