防屈曲支撑-钢筋混凝土框架结构基于韧性的抗震设计方法研究

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (7) : 146-154.

土木工程

防屈曲支撑-钢筋混凝土框架结构基于韧性的抗震设计方法研究

马恺泽*1，李兰欣1，邢国华1，陈韵如1

作者信息 +

Resilience-based aseismic design method for buckling-restrained braced-RC frame structure

MA Kaize*, LI Lanxin, XING Guohua, CHEN Yunru

Author information +

文章历史 +

摘要

为实现防屈曲支撑-钢筋混凝土框架结构基于韧性的抗震设计，引入韧性水平量化指标，建立建筑抗震韧性等级的分级，提出利用功能损失控制韧性指标的计算假定，并建立建筑多层级功能损失量化关系，提出根据建筑功能损失控制构件损伤及工程需求参数的方法。依据防屈曲支撑-钢筋混凝土框架结构的受力机制，提出其基于韧性的抗震设计方法并建立设计流程。将设计方法应用于一幢5层的防屈曲支撑-钢筋混凝土框架结构的抗震设计并进行罕遇地震作用下的弹塑性时程分析。分析结果表明：结构的层间位移角和层间剪力分布均满足设计要求，所提出的方法能实现预期的抗震韧性目标。

Abstract

In order to establish a seismic design method for the buckling-restrained braced reinforced concrete (BRB-RC) frame structures based on resilience, the quantitative index of resilience level was introduced, the classification of the seismic resilience level of the building was established, the calculation assumption based on functional loss to control the resilience index was proposed. A quantitative relationship of multi-level functional loss of the building was established, and the method to control component damage and engineering demand parameters based on building function loss was proposed. According to the working mechanism for BRB-RC frame, the design method based on resilience was determined, and the design process was established. The design method was applied to the seismic design of a 5-story BRB-RC frame structure and the nonlinear dynamic analyses of the structure subjected to large earthquake were performed. The analysis results show that the inter-story drift ratio and inter-story shear force distribution of the structure meet the design requirements, and the proposed method can achieve the expected seismic resilience target.

导出引用

马恺泽1, 李兰欣1, 邢国华1, 陈韵如1. 防屈曲支撑-钢筋混凝土框架结构基于韧性的抗震设计方法研究[J]. 振动与冲击, 2025, 44(7): 146-154

MA Kaize, LI Lanxin, XING Guohua, CHEN Yunru. Resilience-based aseismic design method for buckling-restrained braced-RC frame structure[J]. Journal of Vibration and Shock, 2025, 44(7): 146-154

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