核岛钢平台支撑框架抗震性能试验对比及支撑优化布置研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (22) : 60-70.

论文

丁振坤1，胡宝琳2，田华1，胡吴彪2，闵昱钧2，徐世安2

作者信息 +

Comparison of seismic performance tests and optimization of the brace layout of a nuclear island steel platform braced frame

DING Zhenkun1，HU Baolin2，TIAN Hua1，HU Wubiao2，MIN Yujun2，XU Shian2

Author information +

文章历史 +

摘要

针对核岛钢平台框架“强梁弱柱”的建筑结构形式，为研究不同的支撑结构对其抗震性能改善的影响，分别对普通支撑框架（BMRF）试件和屈曲约束支撑框架（BRBF）试件进行了拟静力试验，对比研究了不同钢框架试件的抗震性能，包括滞回曲线、骨架曲线、等效阻尼比、强度和刚度退化情况等。试验结果表明了屈曲约束支撑框架（BRBF）受力性能的优越性，其极限变形能力和耗能能力分别较普通支撑框架（BMRF）提高了88.67%和654.9%。进一步采用数值分析研究屈曲约束支撑布置方式对核岛钢平台子结构整体受力性能的影响。模拟结果表明：在三种不同的支撑布置方式中，单斜撑型布置方式（SBRBF）不仅可以提高核岛钢平台整体结构的抗震性能，还可以改善原结构的受力性能。

Abstract

Considering the “strong beam and weak column” architectural structure of nuclear island steel platform frame structure, in order to study the influence of different brace structures on its seismic performance improvement, mechanical properties tests of pseudo static loading were carried out respectively for Braced Moment Resisting Frames (BMRF) and Buckling-Restrained Braced Frames (BRBF) specimen, and the seismic performance of different steel frame specimens was studied and compared, including hysteresis curves, skeleton curves and equivalent damping ratio, strength and stiffness degradation, etc. The test results showed that BRBF is superior in mechanical performance, and its ultimate deformation capacity and energy dissipation capacity are 88.67% and 654.9% higher than those of BMRF. On this basis, numerical analysis was adopted to further study the effects of Buckling-Restrained Brace layout on the overall mechanical properties of nuclear island steel platform minor structure. The results of numerical analysis showed that among the three different bracing layouts, single inclined Buckling-Restrained Brace layout (SBRBF) can not only improve the seismic performance of the whole structure, but also improve the mechanical performance of the original frame structure.

导出引用

丁振坤1，胡宝琳2，田华1，胡吴彪2，闵昱钧2，徐世安2. 核岛钢平台支撑框架抗震性能试验对比及支撑优化布置研究[J]. 振动与冲击, 2023, 42(22): 60-70

DING Zhenkun1，HU Baolin2，TIAN Hua1，HU Wubiao2，MIN Yujun2，XU Shian2. Comparison of seismic performance tests and optimization of the brace layout of a nuclear island steel platform braced frame[J]. Journal of Vibration and Shock, 2023, 42(22): 60-70

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