摩擦型高强度螺栓长接头传力比的计算

谭鼎融; 黄永辉; 曾志伟; 陈碧静

doi:10.6052/j.issn.1000-4750.2021.05.S018

摩擦型高强度螺栓长接头传力比的计算

doi: 10.6052/j.issn.1000-4750.2021.05.S018

广州大学，风工程与工程振动研究中心，广东，广州 510006

基金项目: 国家自然科学基金面上项目(11972123，51878188)；高等学校学科创新引智计划项目(111计划D21021)

详细信息

作者简介:
谭鼎融(1994−)，男，广西梧州人，硕士生，主要从事桥梁工程研究(E-mail: 2111916171@e.gzhu.edu.cn)

曾志伟(1996−)，男，江西赣州人，硕士生，主要从事桥梁工程研究(E-mail: 2111916074@e.gzhu.edu.cn)

陈碧静(1997−)，女，广东湛江人，硕士生，主要从事桥梁工程研究(E-mail: 2111916076@e.gzhu.edu.cn)

通讯作者:
黄永辉(1982−)，男，湖南株洲人，副研究员，博士，主要从事桥梁工程研究(E-mail: huangyh@gzhu.edu.cn)

中图分类号: TH131.3
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- PDF下载量: 15
- 被引次数: 0
出版历程
- 收稿日期: 2021-05-12
- 修回日期: 2022-02-25
- 网络出版日期: 2022-05-04
- 刊出日期: 2022-06-06

CALCULATION OF FORCE TRANSMISSION RATIO OF FRICTION HIGH STRENGTH BOLTS CONNECTIONS

Research Center for Wind Engineering and Engineering Vibration, Guangzhou University, Guangzhou, Guangdong 510006, China

摘要

摘要: 摩擦型高强螺栓连接接头在现代钢桥中的应用越来越广泛，为研究各排螺栓的传力比特性，根据文献试验结果及有限元数值模拟结果，对螺栓的荷载滑移曲线进行了拟合，在此基础上建立了长列螺栓群接头的受力简化模型，由变形协调条件，通过求解静力平衡方程组，提出了各排螺栓传力比理论计算方法。为验证该理论方法的正确性，设计了2组螺栓接头，实测了其螺栓传力比，试验结果表明，该文方法与试验结果吻合良好。最后对影响螺栓传力的各参数进行研究，结果表明：传力比与芯板与盖板的板厚比，螺栓排数，孔间距等均有显著关系，当螺栓排数大于5时，建议首排螺栓传力比取0.389。
- 摩擦型高强螺栓 /
- 传力比 /
- 荷载滑移曲线 /
- 有限元模拟 /
- 试验研究
Abstract: High strength bolted friction grip (HSFG) joints are widely used in steel bridges, in order to study the force transmission ratio of HSFG joint, the load-displacement curve of a single bolt was fitted and the mechanical model of long HSFG joint was constructed, based on the reference’s experimental results and finite element analysis. By the grounds of deformation coordination conditions, a theoretical calculation method for the force transmission ratio of each row bolt is proposed through solving the static equilibrium equations. To verify the correctness of the theoretical method, two bolt joints were designed and the force transmission ratio was measured. Experimental results show that the proposed method is in a good agreement with the theoretical results. In the last, parametric analysis is conducted, and the analysis results show that: the force transmission ratio is significantly related to the thickness ratio of the core plate to the cover plate, to the number of bolt rows, to the spacing of bolt hole, and the like. When the number of bolt rows is greater than 5, the force transfer ratio of the first row of bolts is suggested to be 0.389.
- HSFG joint /
- force transmission ratio /
- load-slip curve /
- finite element analysis /
- experimental investigation

HTML全文

图 1 长列螺栓接头计算模型

Figure 1. Mechanical model of HSFG connection

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图 2 典型的螺栓P-Δ曲线

Figure 2. Curves of P-Δ for single bolt

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图 3 试验模型　/mm

Figure 3. Testing model

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图 4 有限元模型

Figure 4. FEM model

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图 5 接触面示意图

Figure 5. Schematic of the contact surface

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图 6 有限元模拟结果与试验、公式计算结果对比

Figure 6. The results comparison of finite element, experiment and formula calculation

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图 7 修正前后公式计算位移与有限元结果对比

Figure 7. Comparison between the displacement calculated by the modified formula and the finite element results

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图 8 试验模型尺寸图　/mm

Figure 8. Testing model size

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图 9 试验模型加载图

Figure 9. Strain gages arrangement of the mode

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图 10 计算模型图　/mm

Figure 10. Calculation model diagram

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图 11 传力比-螺栓间距关系曲线

Figure 11. Force transmission ratio-bolt distance curve

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图 12 传力比-板厚比关系曲线

Figure 12. Force transmission ratio - plate thickness ratio curve

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表 1 试件1试验值与理论值对比

Table 1. Comparison between the test and finite element results

荷载/kN	试验值			理论值
荷载/kN	β₁	β₂	β₃	β₁	β₂	β₃
180	0.470	0.135	0.396	0.407	0.262	0.332
240	0.450	0.141	0.408	0.407	0.262	0.332
300	0.431	0.155	0.415	0.407	0.262	0.332

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表 2 试件2试验值与理论值对比

Table 2. Comparison between the test and finite element results

荷载/kN	试验值				理论值
荷载/kN	β₁	β₂	β₃	Β₄	β₁	β₂	β₃	Β₄
300	0.415	0.103	0.112	0.371	0.348	0.201	0.175	0.276
400	0.403	0.115	0.109	0.373	0.348	0.201	0.175	0.276
500	0.392	0.132	0.114	0.362	0.348	0.201	0.175	0.276

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表 3 不同螺栓排数接头传力比

Table 3. Force transmission ratio of HSFG joint with different bolt rows

螺栓排数	β₁	β₂	β₃	β₄	β₅	β₆	β₇	β₈	β₉
2	0.525	0.475	−	−	−	−	−	−	−
3	0.426	0.216	0.358	−	−	−	−	−	−
4	0.400	0.146	0.130	0.325	−	−	−	−	−
5	0.392	0.125	0.063	0.104	0.315	−	−	−	−
6	0.390	0.119	0.044	0.039	0.097	0.312	−	−	−
7	0.389	0.118	0.038	0.019	0.031	0.094	0.311	−	−
8	0.389	0.117	0.036	0.013	0.012	0.029	0.094	0.311	−
9	0.389	0.117	0.035	0.011	0.006	0.009	0.028	0.094	0.311

下载: 导出CSV

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