CYCLIC MODEL FOR HIGH PERFORMANCE FIBER REINFORCED CEMENTITIOUS COMPOSITE STRUCTURES

摘要

Unlike conventional concrete, High Performance Fiber Reinforced Cementitious Composite (HPFRCC) materials exhibit strain hardening behavior after first cracking. This unique characteristic translates into greater structural ductility and enhanced shear and flexural member responses. HPFRCC materials hold great promise for earthquake engineering applications, which has motivated researchers to explore their use for replacing traditional concrete in critical elements of a structure. To date, most research on the behavior of HPFRCC structural components has been experimental and only limited efforts have been made to develop HPFRCC constitutive models for computational simulation of member and system responses. This paper presents a validated plane-stress, orthogonal, mixed rotating/fixed-crack constitutive model that can be used for modeling the 2-D behavior of HPFRCC structural members and systems subjected to reversed cyclic loading.