《工程科学学报》录用稿，htps:/doi.org/10.13374/i,issn2095-9389.2021.04.11.001©北京科技大学2020 工程科学学报，第37卷，第1期：1-8,2015年1月 Chinese Joumal of Engineering,Vol.37,No.1:1-8,January 2015 D0I:10.13374/.issn2095-9389.2015.01.001;htp://journal..ustb.edu.cn 基于DIC的含3D打印起伏节理试样破裂特性及损伤 本构研究 王本鑫12,3)，金爱兵1,2)，赵怡晴1,2☒，孙浩1,2)，刘加柱12) 1)北京科技大学金属矿山高效开采与安全教有部重点实验室，北京1000832)北京科技大学士木与资源工程学觉Z北京100083 3)Department of Architecture and Civil Engineering.Chalmers University of Technology.Gothenburg4196.Sweden ☒通信作者，E-mail:yiqingz小ao@126.com 摘要受地质构造的影响，岩体工程中经常赋存起伏结构面（如扭转皱褶）， 由于形态复杂，目前起伏节理岩体的破裂及损伤 本构研究仍不充分.采用3D打印技术制作不同倾角的起伏节理模型，通过单轴压缩试验和数字图像相关技术(DIC)对起伏节 理试样的力学及破裂特性进行研究，并基于断裂力学原理，首次提出采用DIC位移场求解节理尖端应力强度因子(SF)进而探 究损伤本构特性的思路。结果表明：通过分析最小强度确定了起伏节理对试样的损伤上限为46.6%，起伏节理试样单轴强度对 倾角的敏感性大于平直节理试样：起裂发生在峰值应力附近，破裂过程可分为破裂路径上微裂隙的产生和同步贯通，破裂模 式表现为多条裂隙张剪组合模式：峰前SF随荷载增加而增加，峰辰同 一荷载下K>K,节理左右两端均匀以剪切形式扩展： 起伏节理对试样的损伤与倾角呈正弦关系，节理和荷载对试样的总损伤与应变均呈“$”型曲线. 关键词起伏节理；DIC,应力强度因子；破裂特性；损伤本构 分类号TU45.1 Study on fracture characteristics and damage constitutive model of 3D printing undulating joint samples based on DIC WANG Ben-xin2)JIN Ai-bihs 2fA0Yh-gimg',2☒，SUN Hao,2）,LIUJia-h,2) 1) Key Laboratory of Ministry ient Mining and Safety of Metal Mines,University of Science and Technology Beijing.Beijing 100083,China School of Civil an ing,University of Science and Technology Beijing,Beijing 100083,China Department of Architecfre and Civil Engineering,Chalmers University of Technology,Gothenburg 41296,Sweden Corresponding author,E-mail:yiqingzhao@126.com ABSTRACT Due to the influence of geological structure,various forms of joint structural planes are often present in rock mass engineering.The undulating structural planes(such as torsional fold surface)are a special kind of them.And they will seriously affect the stablity of the rock mass and bring potential hazards to the rock mass engineering.Because of the complexity of their shape,the research on fracture and damage constitutive law of rock mass with undulating joints is not conducted fully.Undulating joints with different dip angles were fabricated using 3D printing technology.Uniaxial compression test and digital image correlation (DIC) 收稿日期：2021-04-10 基金项目：国家自然科学基金资助项目(52004017)：中国博士后科学基金资助项目(2020M670138):中央高校基本科研业务费 专项资金资助项目(FRF-TP-19-026A1)工程科学学报，第 37 卷，第 1 期：18，2015 年 1 月 Chinese Journal of Engineering, Vol.37, No. 1: 18, January 2015 DOI: 10.13374/j.issn2095-9389.2015.01.001; http://journal.ustb.edu.cn 基于 DIC 的含 3D 打印起伏节理试样破裂特性及损伤 本构研究1 王本鑫 1,2,3)，金爱兵 1,2)，赵怡晴 1,2)，孙 浩 1,2)，刘加柱 1,2) 1) 北京科技大学金属矿山高效开采与安全教育部重点实验室, 北京 100083 2) 北京科技大学土木与资源工程学院, 北京 100083 3) Department of Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg 41296, Sweden 通信作者, E-mail: yiqingzhao@126.com 摘 要 受地质构造的影响，岩体工程中经常赋存起伏结构面(如扭转皱褶)，由于形态复杂，目前起伏节理岩体的破裂及损伤 本构研究仍不充分. 采用 3D 打印技术制作不同倾角的起伏节理模型，通过单轴压缩试验和数字图像相关技术(DIC)对起伏节 理试样的力学及破裂特性进行研究，并基于断裂力学原理，首次提出采用 DIC 位移场求解节理尖端应力强度因子(SIF)进而探 究损伤本构特性的思路. 结果表明：通过分析最小强度确定了起伏节理对试样的损伤上限为 46.6%，起伏节理试样单轴强度对 倾角的敏感性大于平直节理试样；起裂发生在峰值应力附近，破裂过程可分为破裂路径上微裂隙的产生和同步贯通，破裂模 式表现为多条裂隙张剪组合模式；峰前 SIF 随荷载增加而增加，峰后同一荷载下 KII＞KI，节理左右两端均匀以剪切形式扩展； 起伏节理对试样的损伤与倾角呈正弦关系，节理和荷载对试样的总损伤与应变均呈“S”型曲线. 关键词 起伏节理; DIC; 应力强度因子; 破裂特性; 损伤本构 分类号 TU45.1 Study on fracture characteristics and damage constitutive model of 3D printing undulating joint samples based on DIC WANG Ben-xin1,2) , JIN Ai-bing1,2) , ZHAO Yi-qing1,2), SUN Hao1,2) , LIU Jia-zhu1,2) 1) Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, China 2) School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China 3) Department of Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg 41296, Sweden Corresponding author, E-mail: yiqingzhao@126.com ABSTRACT Due to the influence of geological structure, various forms of joint structural planes are often present in rock mass engineering. The undulating structural planes (such as torsional fold surface) are a special kind of them. And they will seriously affect the stablity of the rock mass and bring potential hazards to the rock mass engineering. Because of the complexity of their shape, the research on fracture and damage constitutive law of rock mass with undulating joints is not conducted fully. Undulating joints with different dip angles were fabricated using 3D printing technology. Uniaxial compression test and digital image correlation (DIC) 收稿日期:2021-04-10 基金项目:国家自然科学基金资助项目(52004017)；中国博士后科学基金资助项目(2020M670138)；中央高校基本科研业务费 专项资金资助项目(FRF-TP-19-026A1) 《工程科学学报》录用稿，https://doi.org/10.13374/j.issn2095-9389.2021.04.11.001 ©北京科技大学 2020 录用稿件，非最终出版稿