| 自由曲面单层网格的智能布局设计研究 |
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| 引用本文： | 李承铭,卢旦.自由曲面单层网格的智能布局设计研究[J].土木工程学报,2011(3). |
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| 作者姓名： | 李承铭 卢旦 |
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| 作者单位： | 上海现代建筑设计(集团)有限公司; |
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| 摘 要： | 单层网格结构的网格划分标准不同于有限元网格的划分,它更侧重于以定性要求为标准的网格质量评价。为满足自由曲面单层网格杆件长度尽量一致、分布尽量均匀、过渡尽量流畅的要求,以自由曲面优化找形为前提,基于网格形状和单元长度的网格质量衡量标准,编制智能化网格设计程序。在整个布局设计过程中,首先通过拓扑不变的原则将空间问题转化为平面问题。其次,利用空间映射原理将在平面参考域上布置好的网格映射回三维空间曲面。最后,通过对初始拓扑网格进行智能化的修正和优化,保证所有杆件长度一致、网格布置美观的效果。通过在上海世博轴阳光谷工程中的实际应用证明,该方法操作简单,效果理想。且若采用不同拓扑关系布置的网格可以生成同样要求的最终杆件布置效果,供建筑师设计选用。
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| 关 键 词： | 自由曲面 单层网格 拓扑结构 网格质量 |
Study of intelligent layout design of single-layer lattice shell of free form surface |
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| Li Chengming Lu Dan Co.,Ltd.,Shanghai ,China.Study of intelligent layout design of single-layer lattice shell of free form surface[J].China Civil Engineering Journal,2011(3). |
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| Authors: | Li Chengming Lu Dan Co Ltd Shanghai China |
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| Affiliation: | Li Chengming Lu Dan (Shanghai Xian Dai Architectural Design(Group) Co.,Ltd.,Shanghai 200041,China) |
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| Abstract: | The grid quality standards of single-layer lattice shells are different from that of the FEM grid in that the former emphasizes more on qualitative demands.It is desired to have identical element length,well-distributed grids,and fluent lines.After the free-form surface shape optimization was carried out,intelligent grid design programs were devised based on mesh shape and element length standard.In the process of layout design,the space problem must firstly be turned into plane problem using topological in... |
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| Keywords: | free-form surface single-layer lattice topology structure grid quality |
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