EXPERIMENTAL STUDY ON SEISMIC PERFORMANCE OF ASSEMBLED HPFRC ENERGY-DISSIPATION WALL

High-performance fibre reinforced concrete (HPFRC) can exhibit tensile strain-hardening and multi-crack development properties, and can be used as an ideal energy-consuming material to make replaceable energy-dissipation components. Five 1∶3 scale energy-dissipation walls were designed and constructed using HPFRC materials, and subjected to horizontal low-cycle reciprocating loading tests. The study analyzed the failure characteristics, load-bearing capacity, deformation performance, stiffness degradation, and energy dissipation capability of the walls. The Park two-parameter model was applied to assess the damage throughout the process, and finally, the seismic performance indicators were categorized into three classes (A, B, C) based on the quality. The results showed that the WP90F energy-dissipation wall exhibited the best overall performance. Based on the OpenSees platform, a numerical model was established to reflect the hysteretic behavior of specimen WP90F under cyclic loading, and its applicability was verified. The results indicate that the aspect ratio has the most significant impact on the initial stiffness and horizontal load-bearing capacity of the energy-dissipation walls. The longitudinal reinforcement ratio significantly affects the horizontal load-bearing capacity, but its influence on the initial stiffness is not as pronounced. The HPFRC energy-dissipation wall with vertical seams has the potential to be effective energy-dissipation elements in the earthquake resilient systems.