• 首页 | 期刊简介 | 编委会 | 投稿须知 | 下载专区 | 联系我们 | English
夏明杰,范立峰,马国伟*.3D打印结构加强混凝土短柱抗压力学性能研究[J].实验力学,2018,33(4):551~556
3D打印结构加强混凝土短柱抗压力学性能研究
An experimental study of compressive mechanical properties of concrete short column strengthened by 3D-printing structure
投稿时间: 2017-03-16  最后修改时间: 2017-04-19
DOI:10.7520/1001-4888-17-063
中文关键词:  3D打印结构  加强混凝土  力学性能  单轴压缩试验
英文关键词:3D-printing structure  reinforcement concrete  mechanical behavior  unconfined compression
基金项目:国家自然科学基金国家重大科研仪器研制项目资助(项目号: 51627812)
作者单位
夏明杰 北京工业大学建筑工程学院 北京 100124 
范立峰 北京工业大学建筑工程学院 北京 100124 
马国伟* 北京工业大学建筑工程学院 北京 100124 
摘要点击次数: 36
全文下载次数: 
中文摘要:
      以韧性树脂为材料,采用光固化3D打印技术,制作由若干纵筋和环向箍筋组成的3D打印结构网架,用于加强混凝土材料。混凝土试件为直径100mm,高200mm的圆柱,由M2.5水泥砂浆为基体,配筋率体积比为2.17%。另制作相同尺寸的无加筋素混凝土试件作对比试验。单轴压缩试验结果表明,与素混凝土试件相比,3D打印结构加强混凝土试件的抗压强度提高了53.28%,峰值应变提高了70.22%,极限应变提高了164.66%,峰前吸收能量值提高了134.21%。3D打印结构加强混凝土试件破坏后强度下降比素混凝土试件更缓慢,在破坏形态上,加强后的试件裂纹更窄。本文论证了3D打印结构加强混凝土在工程中应用的可行性。
英文摘要:
      Taking tough resin as material, adopting light curing 3-D printing technology, 3-D printed grid structure composed of several longitudinal bars and hoop stirrups was fabricated to reinforce the concrete specimen. The concrete specimen is a circular column with diameter of 100mm and height of 200mm. M2.5 cement mortar is used as the matrix, and the ratio of reinforcement to volume is 2.17%. Unreinforced concrete specimens with the same size were made for contrast experiment. Uniaxial compression experimental results show that compared with plain concrete specimen, the compressive strength of concrete specimens strengthened by 3D printing structure increases by 53.28%, peak strain increases by 70.22%, the ultimate strain increases by 164.66%, the pre-peak absorption energy increases by 134.21%, respectively. After peak strength, the strength degradation of concrete specimens strengthened by 3-D printing structure is more slowly than that of plain concrete specimens. Moreover, in the failure mode, the crack of the strengthened specimen is narrower. Finally, the application feasibility in engineering of above concrete reinforcement technology based on 3D-printing is demonstrated.
查看全文  查看/发表评论  下载PDF阅读器
关闭

版权所有:《实验力学》编辑部
您是本站第 1575656 位访问者,今日一共访问90次,当前在线人数: 69
技术支持:本系统由北京勤云科技发展有限公司设计