基于石膏空腔模的无梁楼盖拓扑优化及拓扑结构静力特性研究  

Topology optimization and static characteristic of gypsum embedded filler cast-in-place concrete hollow floor

作　　者：胡松[1] 黄勇[2] 陈波[2] 周理[2] 

机构地区：[1]贵州大学土木工程学院,贵州贵阳550025 [2]贵州大学建筑与城市规划学院,贵州贵阳550025

出　　处：《空间结构》2015年第1期54-63,89,共11页Spatial Structures

基　　金：国家自然科学基金项目(51368009);贵州省工业攻关项目(20113030)

摘　　要：采用ANSYS提供的均匀化方法对板柱结构进行拓扑优化,提出四类石膏空腔模无梁楼盖的拓扑优化结构模型:密肋式楼盖、空腹板架式楼盖、井式楼盖和其他网格楼盖.在此基础上,根据已有研究成果和工程经验,提出五种石膏空腔模无梁楼盖结构形式:密肋式楼盖、空腹板架式楼盖、井式-空腹板架组合式楼盖、井式楼盖和9区格楼盖.用ANSYS对上述五种结构进行了竖向荷载下的静力分析,详细研究了其挠度和应力分布.研究表明:9区格楼盖、井式楼盖、井式-空腹板架组合式楼盖、密肋式楼盖、空腹板架式楼盖的挠度依次增大;密肋式楼盖、空腹板架式楼盖、井式-空腹板架组合式楼盖的水平向正应力分布呈明显的实体板特征,而井式楼盖、9区格楼盖无明显的实体板特征.综合挠度分布、应力分布以及施工便捷性等几方面因素,得到井式无梁楼盖、井式-空腹板架组合无梁楼盖较优地结论.According to topology optimization of slab-column structure with homogenization method provided by ANSYS, four forms of gypsum embedded filler cast-in-place concrete hollow floor are proposed： waffle slab, composite open-web plate, cross beam floor and other grids. On the basis of the above and former results and experience, five structural models are built： waffle slab, composite open-web floor, composite cross-beam and open-web floor, cross beam floor, nine-rectangle-grid floor. Through the static analysis under vertical load by ANSYS, deflection and stress distribution of five kinds of structures have been studied in detail. The results show that： the deflection of nine-rectangle-grid floor, cross beam floor, composite cross-beam and open-web floor, waffle slab, composite open-web floor increases in turn. The horizontal stress of waffle slab, composite open-web floor, composite cross-beam and open-web floor show obvious characteristics of solid floor, but cross beam floor and nine-rectangle-grid floor does not. Consid- ering the deflection distribution, stress distribution and ease of construction, cross beam floor and ninerectangle-grid floor are better than other floor.

关 键 词：石膏空腔模 无梁楼盖 拓扑结构 静力特性 

分 类 号：TU398.1[建筑科学—结构工程]