摘要
传统结构优化模型的目标函数中,通常不包括结构用料的能耗和排放目标。在传统结构优化模型的基础上,增加了结构用料的能耗和排放两个新的目标函数,使得结构优化模型更能够符合时代对可持续发展的需求。同时给出了新增目标函数的表达形式和新的优化模型的形式。并以两杆桁架这种常见的建筑结构为例,分析了考虑结构用料的生命周期能耗和排放目标在结构优化中的意义,为决策者提供了符合可持续发展目标的选择方案。最后,将多目标统一为单目标,在给定个目标权重相同的情况下,给出了最优的设计方案。
In traditional structure optimization model,the energy consumption and emission goals are not included in the optimization objectives.For sustainable development,it is necessary to consider the life cycle energy consumption and emission in the structural optimization.In this paper,the above two factors have been taken into account as optimization objectives compared to the traditional optimal model for the need of sustainable development of the current society.The differences between the traditional optimal results and the new model results have been analyzed for a case of two-bar truss;the importance of considering the two more objectives has been pointed out.The study proves a more sustainable optimal model for the future structural design.The multi-objective optimal problem has been converted into a single objective problem by giving the weights to the sub-objectives and the optimal option has been given under the condition that the sub-objective is with the same weight.
出处
《地下空间与工程学报》
CSCD
北大核心
2011年第4期728-732,共5页
Chinese Journal of Underground Space and Engineering
基金
国家自然基金资助项目(50865002)
关键词
结构
能耗
排放
优化
structure
energy consumption
emission
optimization
