配筋3D打印混凝土结构有限元模拟方法及拱稳定性分析  

Finite Element Simulation Method of 3D Printed Concrete Structures and Analysis of Arch Stability

作　　者：韩潇雨 瞿震南 严佳川[1,2,3] 耿志卿 彭玉明[4] 陆希[4] HAN Xiaoyu;QU Zhennan;YAN Jiachuan;GENG Zhiqing;PENG Yuming;LU Xi(Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education,Harbin Institute of Technology,Harbin,Heilongjiang 150090,China;Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology,Harbin Institute of Technology,Harbin,Heilongjiang 150090,China;School of Civil Engineering,Harbin Institute of Technology,Harbin,Heilongjiang 150090,China;Shanghai Satellite Engineering Research Institute,Shanghai 200240,China)

机构地区：[1]哈尔滨工业大学结构工程灾变与控制教育部重点实验室,黑龙江哈尔滨150090 [2]哈尔滨工业大学土木工程智能防灾减灾工业和信息化部重点实验室,黑龙江哈尔滨150090 [3]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090 [4]上海卫星工程研究所,上海200240

出　　处：《施工技术（中英文）》2024年第20期136-143,共8页Construction Technology

基　　金：上海航天科技创新基金(SAST2019⁃057)。

摘　　要：由于3D打印混凝土技术对打印材料的工作性能要求较高,试验过程中存在不可避免的试验误差,导致3D打印混凝土构件力学性能存在较大离散性。国内外学者对3D打印混凝土构件的有限元模拟研究尚处于起步阶段,关于配有钢筋的3D打印混凝土构件基本力学性能的研究很少。因此,提出了3D打印混凝土构件有限元模拟方法,并对素混凝土和配筋混凝土拱结构进行稳定性分析,考察钢筋与打印成型方式对3D打印混凝土拱结构稳定性的影响。研究发现:3D打印混凝土拱结构承载力明显低于筑模成型拱结构;添加钢筋能显著提高垂直拱跨方向打印的拱结构承载力,而对平行拱跨方向打印的拱结构承载力影响不大;添加钢筋能显著提高拱结构延性。Due to the high requirements of 3D printing concrete technology on the working performance of printing materials,there are inevitable test errors in the test process,resulting in a large dispersion of mechanical properties of 3D printing concrete members.The finite element simulation research of 3D printed concrete members by domestic and foreign scholars is still in its infancy,and there are few studies on the basic mechanical properties of 3D printed concrete members with steel bars.Therefore,the finite element simulation method of 3D printed concrete members is proposed,and the stability performance of plain concrete and reinforced concrete arch structures is analyzed.The influence of steel bars and printing molding methods on the stability performance of 3D printed concrete arch structures is investigated.It is found that the bearing capacity of 3D printed concrete arch structure is significantly lower than that of molded arch structure.The addition of steel bars can significantly improve the bearing capacity of the arch structure printed in the vertical arch span direction,but has little effect on the bearing capacity of the arch structure printed in the parallel arch span direction.Adding steel bars can significantly improve the ductility of arch structure.

关 键 词：混凝土 3D打印 拱结构 有限元分析 稳定性 

分 类 号：TU37[建筑科学—结构工程]