Abstract： External prestressed selfcentering frame （EPSCF） is a new type of controllable seismic structure. The main techniques used in EPSCF are pure hinged joints, external prestressed tendons providing lateral stiffness of structure and displacement control technique by employing dampers. Based on the previous research of the 2D-EPSCF, the 3D-EPSCF was proposed and a shaking table test of a 1/3-scale 3D-EPSCF structure model was conducted to study the seismic behavior of 3D-EPSCF. The shaking table test included design and fabrication, arrangement of measuring points, and seismic response analysis. The experimental results showed that under the earthquake the acceleration responses of the designed EPSCF is only 1/3 to 1/2 to the conventional structure and the displacement response can meet the preset design requirement. Moreover, the interstory angle of EPSCF is about 1/60 and near to that of a conventional reinforced concrete frame （RCF）. Test results indicate that EPSCF has smaller acceleration responses compared with RCF and the displacement response can be effectively controlled. Under earthquake, no damage occurred in the main components of EPSCF, the residual deformation is small, and only the interstory dampers yielded, that show the EPSCF has resilient structural characteristics of damage-free and convenient replacement.
鲁亮 叶雨立 夏婉秋 黄子恒. 体外预应力自复位钢筋混凝土框架#br#
抗震性能振动台试验研究[J]. 土木工程学报, 2020, 53(S2): 68-73, 108.
Lu Liang Ye Yuli Xia Wanqiu Huang Ziheng. Study on the seismic performance of a 3D external prestressed self-centering#br#
reinforced concrete frame by shaking table test. 土木工程学报, 2020, 53(S2): 68-73, 108.
