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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

41卷

期数:

2024年05期

页码:

71-81

栏目:

建筑结构

出版日期:

2024-09-20

文章信息/Info

Title:

Study on load-bearing capacity of single/double mounting connectors of shared tower

文章编号:

1673-2049(2024)05-0071-11

作者:

钟炜辉^1,2,彭良辉¹,郑玉辉¹,王 瑶¹,刘兆阳¹

(1. 西安建筑科技大学 土木工程学院,陕西 西安 710055; 2. 西安建筑科技大学 结构工程与抗震教育部重点实验室,陕西 西安 710055)

Author(s):

ZHONG Weihui^1,2, PENG Lianghui¹, ZHENG Yuhui¹, WANG Yao¹, LIU Zhaoyang¹

(1. College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China; 2. Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China)

关键词:

共享铁塔;  挂载连接件;  挂载数量;  拟静力试验;  有限元分析;  理论模型

Keywords:

shared tower;  mounting connector;  mounting quantity;  quasi-static experiment;  finite element analysis;  theoretical model

分类号:

TU391

DOI:

10.19815/j.jace.2023.01064

文献标志码:

A

摘要:

为研究挂载数量对挂载连接件承载能力和刚度的影响,设计了单挂载与双挂载两种挂载连接件。通过单调拟静力试验研究挂载连接件的承载能力、刚度及其破坏模式,采用有限元软件分析了螺栓直径、钢管宽度、双板件厚度、抗滑移系数和螺栓预紧力对单/双挂载连接件承载力和刚度的影响。结果表明:单/双挂载连接件的破坏模式均为钢管底部加劲肋处断裂,双挂载连接件的极限承载力和初始刚度相比于单挂载连接件分别增加了108.48%和104.27%,可通过加强钢管的上下端部提高连接件的承载力; 当抗滑移系数小于等于0.1时,单挂载连接件出现滑移破坏,当抗滑移系数小于等于0.15时,双挂载连接件出现滑移破坏,在其他参数下连接件均未出现滑移破坏; 相比于螺栓预紧力和抗滑移系数,螺栓直径、钢管宽度和双板件厚度对连接件的承载力和刚度影响更大; 推导出的连接件极限承载力和极限位移计算公式可为同类工程设计提供参考。

Abstract:

To study the influence of mount quantity on the bearing capacity and stiffness of mounting connectors, two kinds of mounting connectors with single and double mount were designed. The bearing capacity, stiffness and failure mode of mounting connectors were studied by monotonic quasi-static experiment. The influence of bolt diameter, steel pipe width, double plate thickness, anti-slip coefficient and bolt preloading force on the bearing capacity and stiffness of mounting connectors with single and double mount was analyzed by finite element software. The results show that the failure modes of mounting connectors with single and double mount are all fracture at the rib stiffener of steel pipe. Compared with the single mounting connector, the ultimate bearing capacity and initial stiffness of the double mounting connector increase by 108.48% and 104.27% respectively. The bearing capacity of the connectors can be improved by strengthening the top and bottom ends of the steel pipe. When the anti-slip coefficient is less than or equal to 0.1, the single mounting connector appears slip failure. When the anti-slip coefficient is less than or equal to 0.15, the double mounting connector appears slip failure. Under other parameters, the connector does not appear slip failure. Compared with bolt preloading force and anti-slip coefficient, bolt diameter, steel pipe width and double plate thickness have greater influence on the bearing capacity and stiffness of the connector. The deduced calculation formulas of ultimate bearing capacity and ultimate displacement of the connectors can provide reference for similar engineering design.

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相似文献/References:

[1]钟炜辉,赵孟军,郑玉辉,等.不同螺栓等级下共享铁塔挂载连接件承载性能研究[J].建筑科学与工程学报,2024,41(01):93.[doi:10.19815/j.jace.2022.03122]
　ZHONG Weihui,ZHAO Mengjun,ZHENG Yuhui,et al.Load-bearing capacity study of mounting connector of shared tower under different bolt grades[J].Journal of Architecture and Civil Engineering,2024,41(05):93.[doi:10.19815/j.jace.2022.03122]

备注/Memo

备注/Memo:

收稿日期:2023-01-06
基金项目:国家自然科学基金项目(52178162); 陕西省重点研发计划项目(2018ZDXM-SF-097)
作者简介:钟炜辉(1980-),男,工学博士,教授,博士生导师,E-mail:zhongweihui1980@163.com。

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更新日期/Last Update: 2024-09-30