不对称多塔结构大底盘的应力分析与设计
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摘要
介绍了8幢高层建筑结构共用大底盘的设计分析过程。依据该项目工程资料,利用多个程序对整体模型和单塔模型进行了小震弹性分析及大震弹塑性时程分析,对受力复杂部位的楼板进行了应力分析。探讨了大底盘八塔高层结构模型的选取、结构模型的振动特征和最终的设计措施。由于结构不对称,底盘在拉、压、弯、扭等复杂受力状态下,底盘及附近楼层受影响最大,是需要加强的关键部位。
Finite element models of eight high-rise buildings with a connection chassis structure were established with different commercial available software.Seismic design and analysis of this complex structural system is present in this paper.Model verification,vibration characteristics,and design optimization were discussed.Stress analysis clearly indicates that,due to nonsymmetrical feature,the chassis structure shows complicated stress distribution under the combination of tension forces,compression forces,moment,and torsion.Stress concentration occurs at a connection chassis structure and floors close to it,which therefore call for proper design.
Finite element models of eight high-rise buildings with a connection chassis structure were established with different commercial available software.Seismic design and analysis of this complex structural system is present in this paper.Model verification,vibration characteristics,and design optimization were discussed.Stress analysis clearly indicates that,due to nonsymmetrical feature,the chassis structure shows complicated stress distribution under the combination of tension forces,compression forces,moment,and torsion.Stress concentration occurs at a connection chassis structure and floors close to it,which therefore call for proper design.
引文
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[4]吕西林.高层建筑结构[M].武汉:武汉理工大学出版社,2003.Lu Xilin.Structure of high-rise building[M].Wuhan:Wuhan University of Technology Press,2003.(in Chinese)
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[6]王铁梦.工程结构裂缝控制[M].北京:中国建筑工业出版社,1997.Wang Tiemeng.Control of cracking in engineering structure[M].Beijing:China Architecture and Building Press,1997.(in Chinese)
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