| 郭永立,方耀楚,张文龙,肖潇,张纯,王志豪.往复荷载作用下新型装配式螺栓干节点的抗震性能研究[J].南华大学学报(自然科学版),2022,(5):18~28.[GUO Yongli,FANG Yaochu,ZHANG Wenlong,XIAO Xiao,ZHANG Chun,WANG Zhihao.Study on Seismic Properties of New Prefabricated Bolt Dry Joint Under Cyclic Loading[J].Journal of University of South China(Science and Technology),2022,(5):18~28.] |
| 往复荷载作用下新型装配式螺栓干节点的抗震性能研究 |
| Study on Seismic Properties of New Prefabricated Bolt Dry Joint Under Cyclic Loading |
| 投稿时间：2022-05-07 |
| DOI：10. 19431/ j. cnki. 1673-0062. 2022. 05. 004 |
| 中文关键词: ANSYS/LS-DYNA 装配式 螺栓干节点 低周往复荷载 抗震性能 |
| 英文关键词:ANSYS/LS-DYNA prefabricated bolt dry joint low-cycle reciprocating load seismic properties |
| 基金项目:湖南省自然科学基金项目(2021JJ50015);湖南省教育厅重点项目(20A426) |
| 作者 | 单位 | E-mail | | 郭永立 | 南华大学 土木工程学院,湖南 衡阳 421001 | 1758483173@qq.com,fangyaochu@usc.edu.cn | | 方耀楚 | 南华大学 土木工程学院,湖南 衡阳 421001
高性能混凝土湖南省重点实验室,湖南 衡阳 421001
中国核建高性能混凝土重点实验室,湖南 衡阳 421001 | fangyaochu@usc.edu.cn | | 张文龙 | 南华大学 土木工程学院,湖南 衡阳 421001 | | | 肖潇 | 南华大学 土木工程学院,湖南 衡阳 421001
高性能混凝土湖南省重点实验室,湖南 衡阳 421001
中国核建高性能混凝土重点实验室,湖南 衡阳 421001 | | | 张纯 | 南华大学 土木工程学院,湖南 衡阳 421001 | | | 王志豪 | 南华大学 土木工程学院,湖南 衡阳 421001 | |
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| 中文摘要: |
| 本文基于ANSYS/LS-DYNA有限元仿真软件,对一种改进的新型装配式螺栓干节点施加低周往复荷载,进行抗震性能研究,分析了该新型螺栓干节点的耗能、承载力、延性及刚度等方面的力学性能及其破坏模式,并探讨混凝土强度、轴压比和梁配筋率对该节点力学性能的影响规律。结果表明,新型螺栓干节点比现浇节点和改进前的螺栓干节点具有更好的耗能、更高的刚度和强度,其屈服荷载、极限承载力和延性分别比现浇节点提高了35%、22%和31%,而相比改进前的螺栓干节点分别提高了38%、27%和58%,表明新型螺栓干节点的抗震性能更好;随着混凝土强度和梁配筋率的提高,新型螺栓干节点的极限承载力、耗能性能和割线刚度都有所提高,抗震性能也随之提高;柱轴压比在一定范围内的增大可以提高节点的屈服荷载、峰值荷载和屈服位移,但影响程度较低。 |
| 英文摘要: |
| Based on ANSYS/LS-DYNA finite element simulation software, this paper investigates the seismic performance of a new modified assembled bolted dry joint by applying low circumferential reciprocal loads. The mechanical properties of the new bolted dry joint in terms of energy dissipation, bearing capacity, ductility and stiffness and its damage mode are analyzed, and the influence of concrete strength, axial compression ratio and beam reinforcement rate on the mechanical properties of the joint is discussed. The results show that the new bolted dry joint has better energy dissipation, higher stiffness and strength than the cast-in-place joint and the bolted dry joint before improvement, and its yield load, ultimate bearing capacity and ductility are increased by 35%, 22% and 31%, respectively, compared with the cast-in-place joint, and 38%, 27% and 58%, respectively, compared with the bolted dry joint before improvement, indicating that the new bolted dry joint has better seismic performance; with the ultimate bearing capacity, energy dissipation performance and cut-line stiffness of the new bolted dry joint are improved with the increase of concrete strength and beam reinforcement rate, and the seismic performance is also improved; the increase of column axial compression ratio in a certain range can improve the yield load, peak load and yield displacement of the joint, but the degree of influence is low. |
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