| 多层与高层错列桁架钢结构体系抗侧力性能对比 |
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| 引用本文： | 张勇,张崇厚,刘彦生.多层与高层错列桁架钢结构体系抗侧力性能对比[J].清华大学学报(自然科学版),2007,47(12):2100-2104. |
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| 作者姓名： | 张勇 张崇厚 刘彦生 |
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| 作者单位： | 1. 清华大学土木工程系,北京,100084
2. 浙江清华长三角研究院,嘉兴,314000 |
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| 基金项目： | 浙江省科技攻关项目;浙江省嘉兴市科技计划 |
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| 摘 要： | 为了明确多层和高层错列桁架钢结构体系抗侧力性能的异同,建立了总高7、13、19层的3种结构模型进行三维整体计算,分析了不同的结构布置、抗侧力构件和桁架形式的选取对结构内力、水平位移、自振周期及振型的影响。分析结果表明,高层结构的侧移比多层结构更难控制,高层结构需比多层结构使用更大刚度的抗侧力构件。建议:高层错列桁架结构采用混合桁架形式,其受力和抗震效果好于采用帕氏桁架形式;高层错列桁架结构宜在纵向设置剪力墙,宜在横向设置偏心支撑。
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| 关 键 词： | 结构体系 错列桁架 结构侧移 抗侧力 纵向刚度 偏心支撑 |
| 文章编号： | 1000-0054(2007)12-2100-05 |
| 修稿时间： | 2006年10月31 |
Lateral force resistance of multi-story and high-rise staggered truss systems |
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| ZHANG Yong,ZHANG Chonghou,LIU Yansheng.Lateral force resistance of multi-story and high-rise staggered truss systems[J].Journal of Tsinghua University(Science and Technology),2007,47(12):2100-2104. |
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| Authors: | ZHANG Yong ZHANG Chonghou LIU Yansheng |
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| Abstract: | Analytical models of 7-,13-,and 19-story building were used to analyze the lateral force resistance of multi-story and high-rise staggered truss systems.The studies analyzed the influence of structural layout,lateral force resisting members and truss forms on the internal forces,transverse displacements,vibration modes,and vibration periods.The analyses indicate that displacement control is more difficult in high-rise structure than in multi-story buildings.The results show that the mechanical and seismic performances of the staggered truss system with mixed truss forms are better than that of systems with Pratt trusses.Shear walls should be used along the longitudinal direction,with eccentric braces along the transverse direction. |
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| Keywords: | structural system staggered truss lateral structural displacement lateral force resistance longitudinal stiffness eccentric brace |
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