ABSTRACT

This paper presents the seismic behavior of a precast concrete frame with buckling-restrained braces (BRBs-PC frame) and analyzes the structural failure mode caused by the horizontal force of BRBs. Two half-scale PC frames, with and without BRBs, were designed and tested using a pseudo-static test. During the test, the BRBs-PC frame exhibited a failure mode of beam-hinge with BRBs. When the BRBs-PC frame yielded, the ratio of the BRB’s energy dissipation to total energy dissipation was 65%. Cracks appeared on the column’s superimposed surfaces. The ultimate bearing capacity and energy dissipation of the BRBs-PC frame were significantly improved.

摘要

本文介绍了带有屈曲约束支撑的预制混凝土框架（BRBs-PC 框架）的抗震性能，并分析了由 BRBs 的水平力引起的结构失效模式。使用伪静态测试设计和测试了两个带有和不带有 BRB 的半尺寸 PC 框架。在测试过程中，BRBs-PC 框架表现出带有 BRBs 的梁铰链失效模式。当 BRBs-PC 框架屈服时，BRB 的能量耗散占总能量耗散的比率为 65%。裂纹出现在柱的叠加表面上。BRBs-PC车架的极限承载力和耗能性能得到显着提高。