多荷载情况下基于MMC拓扑优化方法的拉压杆模型研究  

Research on Strut-and-Tie Models by Topology Optimization based on MMC under Multiple Load Cases

作　　者：乔文正 陈国荣[2] Qiao Wenzheng;Chen Guorong

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：《重庆建筑》2020年第10期31-34,共4页Chongqing Architecture

摘　　要：在实际工程中,多种荷载往往并不是同时作用的,而是存在荷载组合的问题,因此,多荷载条件下的基于优化的拉压杆模型研究具有重要的理论和实际意义。该文将基于可移动变形组件拓扑优化方法用于混凝土结构设计中,通过求解体积约束下柔度最小的优化问题,自动产生最优拓扑,进而产生可靠的拉压杆模型。通过混凝土简支梁算例,分别得出单荷载和多荷载条件下的拉压杆模型,并证实了这一思路可行且高效。In practical engineering,many kinds of loads are not acting at the same time,but have the problem of load combination.It is of great theoretical and practical significance to study the strut-and-tie models based on optimization under multiple load conditions.Topology optimization based on moving morphable components is applied to the design of concrete structures.By solving the optimization problem of minimum compliance under volume constraints,the optimal topology is generated automatically,and the reliable strut-and-tie models are generated.Through the example of concrete simply supported beam,the strut-and-tie models under single load and multiple load conditions are obtained,and the feasibility,effectiveness and high efficiency of this idea are verified.

关 键 词：拉压杆模型 拓扑优化 可移动变形组件 多荷载情况 

分 类 号：TU375.4[建筑科学—结构工程]