基于ANSYS Workbench 对螺母与锚杆螺纹联结的数值分析

doi:10.3973/j.issn.2096-4498.2019.S2.022

隧道建设（中英文） ›› 2019, Vol. 39 ›› Issue (S2): 169-175.DOI: 10.3973/j.issn.2096-4498.2019.S2.022

基于ANSYS Workbench 对螺母与锚杆螺纹联结的数值分析

马武祥, 许岩波, 肖智广, 许战波

(洛阳恒诺锚固技术有限公司, 河南洛阳　471000)

收稿日期:2019-09-16 出版日期:2019-12-31 发布日期:2020-04-04
作者简介:马武祥(1992—),男,河南洛阳人,2018 年毕业于西安科技大学,材料物理与化学专业,硕士,主要从事岩土锚固技术的研究开发工作。E-mail: lymwxiang16@ sina. com。
基金资助:
洛阳市科学技术局(1804002B)

Numerical Analysis of Nut and Anchor for Threaded Connection Based on ANSYS Workbench

MA Wuxiang, XU Yanbo, XIAO Zhiguang, XU Zhanbo

(Luoyang Hengnuo Anchor Technology Co., Ltd., Luoyang 471000, China)

Received:2019-09-16 Online:2019-12-31 Published:2020-04-04

摘要/Abstract

摘要：

为达到自钻式锚杆在岩土锚固工程中的支护稳定性,保证锚杆抗拉力和蠕变性能,需满足配件与锚杆等强。通过ANSYS Workbench 对R32 锚杆与螺母配合后在轴向载荷作用下的应力和变形的有限元数值模拟分析,结果表明: 1)在400 kN 作用力下, 径向配合间隙为0. 2 mm 时,锚杆与螺母联结最大应力值基本位于前3 个联结螺纹的底部,65 mm 长的螺母配合模型整体变形仅 0. 68 mm。2)0. 5 mm 的径向配合间隙的变形值较0. 2 mm 时增加97. 06%。通过在0. 2 mm 间隙条件下与50 mm 长的螺母配合比较可知,50 mm 的螺母全长存在较大的应力区域,变形贯穿所有螺纹,存在失效风险。整体数值分析结果说明螺母在长度为65 mm 时和锚杆配合间隙≥0. 5 mm 的情况下不能满足系统等强要求,而配合间隙≤0. 2 mm 的情况下,可满足锚杆系统的等强要求。试验验证的结果显示出与分析的一致性,系统拉伸时,90%的试样均在螺母与锚杆连接的底部出现失效断裂,其力值的变化也符合螺纹底部硬度测试规律。

关键词: 螺纹联结, 螺母, 自钻式锚杆, 配合间隙, 数值分析, Workbench

Abstract:

In order to guarantee the support stability, tensile and creep properties of self-drilling anchor in rock and soil anchoring engineering, the strength of accessories and anchor should be matched. The numerical simulation analysis on stress and deformation of R32 nut and anchor under the axial load is carried out by ANSYS Workbench. The analytical results show that: (1) When the radial fit clearance is 0. 2 mm, the maximum force value of the coupling is basically located at the bottom of the first three coupling threads and the total deformation of model with 65 mm-long nut is only 0. 68 mm under 400 kN. (2) The deformation value when the fit clearance is 0. 5 mm increases by 97. 06% than that when the fit clearance is 0. 2 mm. It shows that the 50 mm-long nut has a large stress area in the whole length, the deformation runs through all threads, and there is a risk of failure by comparison of fitting condition with the 50 mm-long nut under the condition of 0. 2 mm fit clearance. The overall numerical analysis results indicate that the 65 mm-long nut and the fit condition of 0. 5 mm cannot meet the strong requirements of the system, while the fit clearance of 0. 2 mm can. The results are verified by the experiment and show the consistency with the analytical results. When the system is stretched, 90% of the samples show failure fracture at the bottom of the connection between the nut and the anchor, and the variation of the force value also conforms to the hardness test rule at the bottom of thread.

Key words: threaded connection, nut, self-drilling anchor, fit clearance, numerical analysis, Workbench

中图分类号:

U 45

马武祥, 许岩波, 肖智广, 许战波. 基于ANSYS Workbench 对螺母与锚杆螺纹联结的数值分析[J]. 隧道建设, 2019, 39(S2): 169-175.

MA Wuxiang, XU Yanbo, XIAO Zhiguang, XU Zhanbo. Numerical Analysis of Nut and Anchor for Threaded Connection Based on ANSYS Workbench[J]. Tunnel Construction, 2019, 39(S2): 169-175.

[1]	李慎奎. 武汉地区沙漏型岩溶塌陷数值分析与模型试验研究[J]. 隧道建设, 2020, 40(7): 981-987.
[2]	赖勇,张帅. 流固耦合作用下浅埋偏压隧道扩建方式研究[J]. 隧道建设, 2019, 39(S2): 17-27.
[3]	叶飞, 韩鑫, 牛若飞, 赵汝亮. 基于纵向沉降曲线的黄土地层盾构土舱压力分析[J]. 隧道建设, 2019, 39(S2): 53-59.
[4]	肖子琦，闫治国，周龙，姜弘，马姣蓉. 单双线盾构隧道下穿对油罐群变形影响的数值分析[J]. 隧道建设, 2019, 39(S1): 257-265.
[5]	李　拼, 谢宏明, 何　川, 周子扬, 王士民. 基于有效接触应力的大张开量盾构隧道密封垫防水性能分析[J]. 隧道建设, 2019, 39(12): 1993-.
[6]	那通兴，张国柱，陈俊栋. 寒区隧道含相变围岩传热渗流耦合数值分析[J]. 隧道建设, 2018, 38(S2): 144-150.
[7]	叶宇航，王建，徐文田，刘鑫，柳献. 软土地基大直径地铁盾构隧道衬砌结构受力特性数值分析研究[J]. 隧道建设, 2018, 38(S2): 151-160.
[8]	孙廉威. 基于施加水压的盾构接缝防水机制数值分析[J]. 隧道建设, 2018, 38(4): 603-610.
[9]	杨睿，薛亚东，杨健. 雷达探测隧道壁后空洞的现场验证及空洞影响分析[J]. 隧道建设, 2017, 37(2): 185-191.
[10]	汪鹏程，邵长征，刘志. 盾构隧道侧穿高架桥桩基条件下群桩遮拦效应分析[J]. 隧道建设, 2016, 36(7): 793-799.
[11]	丁加亮，陈江，余富先，唐贤海. 深圳地铁11号线车公庙综合交通枢纽工程两相邻基坑开挖对下卧运营隧道的影响[J]. 隧道建设, 2015, 35(9): 867-872.
[12]	刘亮. T型换乘地铁车站续建基坑开挖对运营结构的影响分析及对策[J]. 隧道建设, 2015, 35(3): 244-249.
[13]	黄文君，郑明新，欧阳林，邹文亮，陈养强. 盾构施工工艺对铁路路基沉降影响的数值分析[J]. 隧道建设, 2015, 35(2): 128-133.
[14]	王丹，张海波，王渭明，秦志斌，孙捷城. 拱盖法地铁车站施工沉降规律及控制对策研究[J]. 隧道建设, 2015, 35(1): 33-40.
[15]	寿克坚，谢其颖. 卵砾石层管推进工程超挖及卡钻对管材与土壤互制行为的影响研究[J]. 隧道建设, 2014, 34(增刊): 48-55.

基于ANSYS Workbench 对螺母与锚杆螺纹联结的数值分析

Numerical Analysis of Nut and Anchor for Threaded Connection Based on ANSYS Workbench

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价