双钢板混凝土组合索塔局部构造足尺弯曲试验研究

陈伟乐; 张天野; 丁然; 张太科; 樊健生; 徐军

doi:10.3724/j.gyjzG24052303

双钢板混凝土组合索塔局部构造足尺弯曲试验研究

doi: 10.3724/j.gyjzG24052303

陈伟乐^1,2,
张天野^1, ,,
丁然¹,
张太科³,
樊健生¹,
徐军⁴

1. 清华大学土木工程系, 北京 100084;
2. 广东省公路建设有限公司, 广州 510030;
3. 广东湾区交通建设投资有限公司, 广州 511455;
4. 中交公路规划设计院有限公司, 北京 100088

基金项目:

国家自然科学基金项目(52121005)

国家重点研发计划 (2022YFC3802000)

广东省交通集团科研项目(JT2023ZD01-01)。

详细信息

作者简介:
陈伟乐,硕士,教授级高级工程师,主要从事公路工程(跨海通道建设管理)的工作,lot-68@163.com。

通讯作者:
张天野,博士研究生,主要从事组合结构研究,tianye-z21@mails.tsinghua.edu.cn。

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- 被引次数: 0
出版历程
- 收稿日期: 2024-05-23
- 网络出版日期: 2025-03-28

Full-Scale Bending Tests on Local Configuration of Concrete-Filled Double-Steel-Plate Composite Cable Towers

1. Department of Civil Engineering, Tsinghua University, Beijing 100084, China;
2. Guangdong Provincial Highway Construction Co., Ltd., Guangzhou 510030, China;
3. Guangdong Provincial Bay Area Transportation Construction Investment Co., Ltd., Guangzhou 511455, China;
4. China Communications Highway Planning and Design Institute Co., Ltd., Beijing 100088, China

摘要

摘要: 双钢板混凝土组合索塔具有压弯刚度大、承载力高、施工便捷等诸多优势,在大跨度悬索桥中应用前景广阔。选取塔壁局部足尺构造开展了4组纯弯梁式试验,研究采用C80高强混凝土的组合索塔中钢板与混凝土的协同工作性能,考察连接件类型、加劲肋间距的影响。试验结果表明:开孔板连接件与栓钉共同保障了钢壳和混凝土间的协同工作;纯栓钉不配筋试件的承载力、刚度和协同工作效果略低于配筋试件;塔壁横向加劲肋间距为1 200 mm较为合适。基于试验结果进一步分析建立了双钢板混凝土组合结构截面抗弯承载力的计算公式,与试验结果吻合良好。
- 双钢板混凝土组合索塔 /
- 开孔板连接件 /
- 足部局部构造 /
- 抗弯承载力 /
- 加劲肋间距
Abstract: The concrete-filled double-steel-plate composite cable tower displays many advantages such as high compression-bending stiffness, high load-bearing capacity, and convenient construction, and has a broad application prospect in long-span suspension bridges. Four full-scale bending beam tests on local configuration of the tower wall were carried out, to study the synergistic working performance of steel plates and concrete in the composite cable tower using C80 high-strength concrete, and to examine the impact of connection types and stiffener spacing. The experimental results showed that the perfobond connectors and stud bolts jointly ensured the synergistic work between the steel plates and concrete. Bearing capacity, stiffness, and synergistic working effect of the pure stud bolt specimens without reinforcement were slightly lower than those of the reinforced specimens. Transverse stiffener spacing of the tower wall was more appropriate at 1 200 mm. Based on the experimental results, a calculation formula for the bending bearing capacity of the cross-section of the double-steel-plate concrete composite structure was further analyzed and established, which matched well with the experimental results.
- concrete-filled double-steel-plate composite (CDC) tower /
- perfobond connector /
- full-scale local configuration /
- bending capacity /
- stiffener spacing

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参考文献(16)

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