基于最佳侧移刚度分布的钢框架结构抗震设计方法
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摘要
以罕遇地震作用下建筑各楼层累积塑性变形倍率相等为目标,基于钢框架结构的最佳侧移刚度分布和最佳截面惯性矩分布,提出多层钢框架结构的抗震设计方法,给出其设计步骤。以7层框架结构为例介绍该设计方法,在此基础上,利用弹塑性时程分析方法和能量法对结构进行抗震性能分析,考察本文提出抗震设计方法的可靠性。研究结果表明,符合最佳侧移刚度分布的多层钢结构在罕遇地震作用下的各楼层累计塑性变形倍率和能量分布较为均匀,具有较传统钢框架结构更优的抗震性能。
In order to make the cumulative plastic deformation ratio of each storey equivalent under rare earthquakes, based on the optimum lateral stiffness distribution and optimum moment of inertia distribution of steel structures, a novel seismic design method is proposed, and the design procedure is presented. A 7-storey steel structure is taken as an example of the design procedure. Time history analysis method and energy method are used to study the seismic performance of the designed steel structure, and the reliability of the design method is verified. The results show that the cumulative plastic deformation ratios and energy distribution of the structures designed with the novel design method are uniform, the seismic performance of which is better than that of common steel structure.
In order to make the cumulative plastic deformation ratio of each storey equivalent under rare earthquakes, based on the optimum lateral stiffness distribution and optimum moment of inertia distribution of steel structures, a novel seismic design method is proposed, and the design procedure is presented. A 7-storey steel structure is taken as an example of the design procedure. Time history analysis method and energy method are used to study the seismic performance of the designed steel structure, and the reliability of the design method is verified. The results show that the cumulative plastic deformation ratios and energy distribution of the structures designed with the novel design method are uniform, the seismic performance of which is better than that of common steel structure.
引文
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[8] 王星星, 裴星洙, 王维. 多高层钢结构最佳侧移刚度分布与最佳截面惯性矩分布研究[J]. 工程抗震与加固改造, 2011, 33(1):19～27 Wang Xing-xing, Pei Xing-zhu, Wang Wei. Study on Optimum Stiffness Ratio and Optimum Moment of Inertia Ratio for Multistorey Steel Structure[J]. Earthquake Resistant Engineering and Retrofitting, 2011, 33(1):19～27(in Chinese)
[9] 裴星洙, 王星星, 王维. 基于抗震的多高层钢结构层间侧移刚度优化分布研究[J]. 江苏科技大学学报, 2011, 25(2): 119～125Pei Xing-zhu, Wang Xing-xing, Wang Wei. Optimal Distribution of Story Lateral Stiffness of Multi-Storey Steel Structure Based on Anti-Seismic[J]. Journal of Jiangsu University of Science and Technology (Natural Science Edition), 2011, 25(2): 119～125(in Chinese)
[2] 叶列平, 裴星洙. 基于平衡原理的建筑结构抗震设计[M]. 北京:清华大学出版社, 2010Ye Lie-ping, Pei Xing-zhu. Earthquake Resistant Design Method for Buildings Based on Energy Balance[M]. Beijing:Tsinghua university Press, 2010(in Chinese)
[3] 瞿岳前,梁兴文,田野.基于能量分析的地震损伤性能评估[J]. 世界地震工程,2006,22(1):109～114Qu Yue-qian,Liang Xing-wen,Tian Yie. Evaluation of Seism Ic Damage Performance Based on Energy Analysis[J]. World Earthquake Engineering, 2006,22(1):109～114(in Chinese)
[4] 裴星洙, 倪慧敏, 王佩. 钢筋混凝土框架-剪力墙结构最佳破坏模式基础研究[J]. 振动与冲击, 2013, 32(20):165～171Pei Xing-zhu, Ni Hui-min, Wang Pei. Best Failure Mode of A Reinforced Concrete Frame-Shear Wall Structure[J]. Journal of Vibration and Shock, 2013, 32(20):165～171(in Chinese)
[5] 叶列平, 缪志伟, 程光煜,等. 建筑结构基于能量抗震设计方法研究[J]. 工程力学, 2014, 31(6):1～12Ye Lie-ping, Miao Zhi-wei, Cheng Guang-yu, et al. Study on the Energy-Based Seismic Design Method of Building Structures[J]. Engineering Mechanics, 2014, 31(6):1～12(in Chinese)
[6] 裴星洙,王维,王星星.基于能量原理的隔震结构地震响应预测法研究[J]. 工程力学, 2011, 28(7): 56～62Pei Xing-zhu, Wang Wei, Wang Xing-xing. Earthquake Response Prediction of Isolated Structures Based on Energy Principle[J]. Engineering Mechanics, 2011, 28(7): 56～62(in Chinese)
[7] 曲哲, 裴星洙. 建筑结构损伤控制设计[M]. 北京:中国建筑工业出版社, 2014Qu Zhe, Pei Xing-zhu. Damage Control-based Design of Buildings[M]. Beijing:China Architecture & Building Press, 2014(in Chinese)
[8] 王星星, 裴星洙, 王维. 多高层钢结构最佳侧移刚度分布与最佳截面惯性矩分布研究[J]. 工程抗震与加固改造, 2011, 33(1):19～27 Wang Xing-xing, Pei Xing-zhu, Wang Wei. Study on Optimum Stiffness Ratio and Optimum Moment of Inertia Ratio for Multistorey Steel Structure[J]. Earthquake Resistant Engineering and Retrofitting, 2011, 33(1):19～27(in Chinese)
[9] 裴星洙, 王星星, 王维. 基于抗震的多高层钢结构层间侧移刚度优化分布研究[J]. 江苏科技大学学报, 2011, 25(2): 119～125Pei Xing-zhu, Wang Xing-xing, Wang Wei. Optimal Distribution of Story Lateral Stiffness of Multi-Storey Steel Structure Based on Anti-Seismic[J]. Journal of Jiangsu University of Science and Technology (Natural Science Edition), 2011, 25(2): 119～125(in Chinese)