一种从拓扑优化结果到拉压杆模型的自动提取方法研究  

Research on an automatic extraction method from topology optimization results to strut-and-tie models

作　　者：乔文正 陈国荣[2] QIAO Wenzheng;CHEN Guorong(Department of Architecture,Luliang University,Luliang 033000;College of Mechanics and Materials,Hohai University,Nanjing 211100)

机构地区：[1]吕梁学院建筑系,山西吕梁033000 [2]河海大学力学与材料学院,江苏南京211100

出　　处：《福建建筑》2021年第1期32-35,共4页Fujian Architecture & Construction

摘　　要：拉压杆模型作为一种混凝土结构的塑性设计方法,被越来越多人所接受并广泛使用。拓扑优化已经成为形成拉压杆模型的广泛共识。然而,如何从拓扑优化结果自然地过渡到拉压杆模型这一重要的问题,却常常被人忽略。基于此,提出由细化和提取两个阶段构成的一种自动提取方法,实现拓扑优化结果与拉压杆模型有效衔接,并且能够最大限度地减少人为干预。在基于可移动变形组件的拓扑优化结果的基础上,通过单侧牛腿算例阐述该方法的思路和过程,并证实其正确性和有效性。As a plastic design method of concrete structure,the strut-and-tie models have been widely accepted and used by more and more people.Topology optimization has become a widely recognized method for generation of strut-and-tie models.However,the crucial problem that how to transition naturally from topology optimization results to strut-and-tie models is often neglected.An automatic extraction method consisting of thinning and extraction phase is proposed,which can effectively connect topology optimization results with strut-and-tie models and minimize the manual intervention.Based on the result from moving morphable components based topology optimization,the idea and process of the automatic extraction method are described,and its validity and effectiveness are verified by the single corbel example.

关 键 词：拉压杆模型 拓扑优化 细化算法 可移动变形组件 

分 类 号：TU375.4[建筑科学—结构工程]