| 巨型柱倾斜的巨型钢框架结构性能分析 |
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| 引用本文： | 陈麟,张耀春,张文元. 巨型柱倾斜的巨型钢框架结构性能分析[J]. 建筑结构学报, 2003, 24(3): 44-49 |
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| 作者姓名： | 陈麟 张耀春 张文元 |
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| 作者单位： | 哈尔滨工业大学土木工程学院,哈尔滨工业大学土木工程学院,哈尔滨工业大学土木工程学院 黑龙江哈尔滨150090,黑龙江哈尔滨150090,黑龙江哈尔滨150090 |
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| 基金项目： | 国家自然科学基金重大项目(59895410)，建设部攻关项目(97-07-01) |
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| 摘 要： | 采用大型通用软件ANSYS5.7,以结构的内力、变形和用钢量为指标分析了巨型柱倾斜坡度对巨型钢框架结构静力性能的影响,并对结构下部是截锥体的巨型钢框架与规则的棱柱体巨型钢框架进行了性能对比分析,包括风荷载作用下的几何非线性弹性静力分析和地震荷载作用下的弹塑性时程分析。结果表明将巨型柱倾斜某一坡度可在用钢量相同甚至降低的情况下,明显地提高结构的抗侧刚度和抗震性能。下部是截锥体的巨型框架与规则的棱柱体巨型框架相比,不仅有很好的经济性,而且结构抵抗风荷载和地震荷载作用的能力也有很大提高,是一种优越的超高层建筑结构形式。
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| 关 键 词： | 弹塑性时程分析 几何非线性分析 静力性能 巨型钢框架 倾斜巨型柱 |
| 文章编号： | 1000-6869(2003)03-0044-06 |
| 收稿时间： | 2003-06-05 |
| 修稿时间： | 2002-01-01 |
Performance analysis of steel megaframe with sloping megacolumns |
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| CHEN Lin,ZHANG Yaochun,ZHANG Wenyuan. Performance analysis of steel megaframe with sloping megacolumns[J]. Journal of Building Structures, 2003, 24(3): 44-49 |
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| Authors: | CHEN Lin ZHANG Yaochun ZHANG Wenyuan |
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| Affiliation: | CHEN Lin,ZHANG Yaochun,ZHANG Wenyuan (School of Civil Engineering,Harbin Institute of Technology,Harbin,China) |
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| Abstract: | By using the software ANSYS5.7, the effect of sloping megacolumns on static performance of steel megaframe structures has been analyzed with the indexes of force, deflection and steel weight. The performances of two steel megaframe structural systems--with and without the megacolumns sloped from 1st to 19th story are also compared according to the results of the geometric nonlinear elastic static analysis under wind load and inelastic response history analysis under strong ground motions. It can be concluded that the lateral stiffness and seismic resistance properties of megaframe structures can both be greatly improved by sloping megacolumns in the case of same or even lower steel weight of the frame. The steel megaframe with truncated pyramid in the lower part is the fine structural system for the super high rise buildings. |
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| Keywords: | sloping megacolumn steel megaframe static performance geometric nonlinear analysis inelastic response history analysis |
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