| 竖向地震下超高层建筑结构的简化波动分析 |
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| 引用本文： | 何政,张昊强.竖向地震下超高层建筑结构的简化波动分析[J].哈尔滨工业大学学报,2013,45(10):93-99. |
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| 作者姓名： | 何政 张昊强 |
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| 作者单位： | 大连理工大学 土木工程学院, 116024 辽宁 大连;大连理工大学 土木工程学院, 116024 辽宁 大连 |
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| 基金项目： | 国家自然科学基金重大研究计划培育项目(90915005);教育部新世纪优秀人才资助项目(NCET-08-0096);国际自然科学基金重大国际合作与交流项目(51161120359). |
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| 摘 要： | 为研究近断层地区竖向地震下超高层建筑结构的脉冲波动效应,将典型超高层建筑结构体系分别简化为一维和二维模型,在弹性范围内,确定纵波通过集中质量的反射和透射系数,以时域差分延时和FFT频域滤波为求解策略,用简化波动分析方法计算结构在竖向地震下的宏观响应,评估结构在竖向地震下的抗震性能．分析表明,与振动分析方法相比,波动分析方法在计算结构竖向地震响应时更具有针对性,特别是近场脉冲型竖向地震下．竖向地震引起轴向构件的轴力波动和相对错动不容忽视．
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| 关 键 词： | 超高层建筑 竖向地震 波动分析 脉冲型地震动 相对错动效应 |
| 收稿时间： | 2012/11/23 0:00:00 |
Simplified wave propagation analysis of high-rise buildings under vertical earthquakes |
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| HE Zheng and ZHANG Haoqiang.Simplified wave propagation analysis of high-rise buildings under vertical earthquakes[J].Journal of Harbin Institute of Technology,2013,45(10):93-99. |
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| Authors: | HE Zheng and ZHANG Haoqiang |
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| Affiliation: | Department of Civil Engineering, Dalian University of Technology, 116024 Dalian, Liaoning, China;Department of Civil Engineering, Dalian University of Technology, 116024 Dalian, Liaoning, China |
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| Abstract: | To study the impulse wave effect of high-rise buildings under vertical earthquake near fault region, simplified wave propagation method is adopted. In elastic range, typical structural system is simplified as one and two dimensional model, and reflection and transmission coefficients of longitudinal wave through lumped mass are determined. Structural vertical seismic macro response is calculated by simplified wave propagation method in which difference time delay and FFT filter are used. The analysis shows that, compared with the vibration method, the wave propagation method is more targeted in calculating structural vertical seismic response, especially under impulse-type vertical earthquake. The axial force fluctuation and relative movement caused by vertical earthquake can not be ignored. |
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| Keywords: | high-rise building vertical earthquake wave propagation analysis impulse-type earthquake relative movement effect |
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