结构形态创构方法的工程应用  

Engineering Applications of Structural Morphogenesis Methods

作　　者：崔昌禹[1] 姜宝石[1] 崔国勇[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《建筑钢结构进展》2011年第6期9-18,共10页Progress in Steel Building Structures

摘　　要：结构形态创构方法是一种以数值计算为基础,运用数学、力学原理来追求力学合理,形式美观的建筑结构形态的方法。主要包括以下两种方法:"改进进化论方法"是模仿自然界的进化现象,通过进行"保留、淘汰、补充"的操作使结构体逐步进化并演变成合理结构的结构形态创构方法;而"高度调整方法"是基于有限元法,通过计算应变能对曲面高度的微分,并根据应变能变化的敏感程度对曲面高度进行调整,最终得到一个结构应变能最小的合理结构形态的自由曲面结构形态创构方法。该方法简单、实用,所得到的结构不但能保证实现建筑师的设计理念,也能保证结构的力学合理性。最终方案可以采用钢筋混凝土结构来实现,也可以用钢结构来实现。文中主要介绍了这两种结构形态创构方法的特点与实际工程中的应用方法,同时结合工程实例,详细分析了所得到的结构形态的力学性能。Structural morphogenesis methods based on numerical calculations are adopted to pursue structural shapes with rational mechanical performance and artistic representation, in which mathematics and mechanical theories are used. Extended evolutionary structural optimization method imitating the evolution in nature is a kind of structural morphogenesis method to produce rational structures by the operation of keeping,eliminating,and adding elements. Height adjusted method based on finite element method is carried out by calculating the differential of strain energy to height. By considering the sensitivity of strain energy, the height of surfaces can be adjusted to achieve optimal structures with minimum strain energy ultimately. Both of these two methods are simple and practical, structures generated by which can not only satisfy the design ideas of architects but also maintain the rationality of mechanics. The final projects can be realized by concrete structures or steel structures. In this paper, characteristics and some projects of both methods are emphatically introduced. The mechanical performances of resultant structures are analyzed in combination with engineering examples simultaneously.

关 键 词：形态优化 结构优化 非线性方法 壳体结构 

分 类 号：TU33[建筑科学—结构工程] TU311