仿竹型筒式立体停车结构的环箍层布置研究  

Research on Arrangement of Hoop-layers of Imitating Bamboo Drum Type Tridimensional Parking Structure

作　　者：贺拥军[1] 刘小华[1] 周绪红[2] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082 [2]兰州大学土木工程与力学学院,甘肃兰州730000

出　　处：《湖南大学学报（自然科学版）》2013年第4期1-7,共7页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51178176);湖南省自然科学基金资助项目(13JJ6022);教育部博士点基金资助项目(2012-0161-1100-19);湖南大学中央高校基本科研业务费专项资金资助项目

摘　　要：基于对竹子优越力学性能的分析及其相应结构特点的研究,在考虑到垂直升降型立体车库结构与竹子宏观结构形式及荷载形式的相似性后,提出按等稳等侧移的仿竹原则在这类结构适当高度处设'节',形成带有环箍层的仿竹型筒式钢构架结构,并对仿竹型结构与非仿竹型结构进行静力及稳定性能综合对比分析.结果表明:按此原则布置环箍层的仿竹型结构的抗侧刚度显著提高,层间位移小且均匀,利于升降设备运行;柱内力突变程度相对缓和,结构抗倾覆能力提高;结构整体稳定性由环箍层间等效短柱控制,稳定极限承载能力增强,验证了仿竹型立体停车结构中环箍层布置的合理性.Considering that the structural type and load feature of vertical lifting tridimensional parking structures are similar to those of bamboo,a new structural arrangement style of tridimensional parking structure was presented,that is to set hoop-layers like bamboo knots at their proper height according to the imitating bamboo principle that any two adjacent hoop-layers have equal stability and lateral displacement.The static and stability properties of imitating bamboo structure and non-imitating bamboo structures were studied.It is shown that the lateral stiffness of imitating bamboo structure is obviously improved and the storey relative lateral displacement becomes smaller and more uniformly distributed.The internal force mutation of columns is relatively moderate,and the resisting overturning ability of structures is enhanced.Moreover,the whole stabilization of structures controlled by equivalent short columns improves the stability bearing capacity.All the above verify the rationality of the arrangement of hoop-layers in imitating bamboo parking structure.

关 键 词：结构仿生 立体停车结构 环箍层 布置原则 稳定性 

分 类 号：TU248.3[建筑科学—建筑设计及理论]