超高性能混凝土预制拼装综合管廊抗剪承载力

陈树辉; 夏樟华; 吴泽霖; 许有胜; 呼明亮; 朱三凡

doi:10.13204/j.gyjzG22010413

超高性能混凝土预制拼装综合管廊抗剪承载力

doi: 10.13204/j.gyjzG22010413

1. 健研检测集团有限公司, 福建厦门 361004;
2. 福州大学土木工程学院, 福州 350108;
3. 深圳市市政设计研究院有限公司, 广东深圳 518038

基金项目:

厦门市建设局科技项目(XJK2020-1-8)

福建省自然科学基金项目(2020J01477)

福州市科技成果转移转化项目(2020-GX-18)。

详细信息

作者简介:
陈树辉,男,1982年出生,硕士,高级工程师,254309803@qq.com。

通讯作者:
夏樟华,男,1980年出生,博士,副研究员,硕士生导师,xiatian@fzu.edu.cn。

计量
- 文章访问数: 42
- HTML全文浏览量: 5
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2022-01-04

The Shear Bearing Capacity of Prefabricated UHPC Utility Tunnels

1. Jianyan Testing Group Co., Ltd., Xiamen 361004,China;
2. College of Civil Engineering, Fuzhou University, Fuzhou 350108, China;
3. Shenzhen Municipal Engineering Design Institute Co., Ltd., Shenzhen 518038, China

摘要

摘要: 为研究超高性能混凝土(UHPC)预制拼装综合管廊在静力荷载作用下的抗剪承载力,通过分析现有箱型混凝土结构的抗剪计算方法,考虑钢纤维对结构的抗拉作用,提出UHPC预制拼装综合管廊抗剪承载力计算方法。结合对UHPC管廊双向荷载作用下的静力试验,对所提出的抗剪承载能力计算式进行分析、比较和验证。结果表明:考虑UHPC中钢纤维对于结构抗剪能力的贡献,参考箱型结构"内力拱"受力计算模型,计算得到的管廊试件破坏时顶板和侧墙抗剪承载力计算值与实测值较为接近,计算结果精度较高,计算误差在7%以内,较现有计算法的计算精度更高。
- UHPC /
- 综合管廊 /
- 静力试验 /
- 抗剪性能 /
- 承载力
Abstract: In order to study the shear bearing capacity of prefabricated UHPC utility tunnels under static loads, the shear resistance calculation method of existing box-shape concrete structures was analyzed, and the tensile effect of steel fibers on the structure was considered, and a shear bearing capacity calculation method of prefabricated UHPC utility tunnels was proposed. Combining with the static tests under bidirectional loads on prefabricated UHPC utility tunnels, the proposed calculation formula for the shear bearing capacity was analyzed, compared and verified. The results indicated that the theoretically calculated values of the shear bearing capacity of top plates and side walls for the utility tunnel structure in destruction under confining pressure, which was considered the contribution of steel fibers in UHPC to shear resistance of structures and was referred to the "internal force arch" calculation model of box-shaped structurs, were closer to the measured values in tests. The calculated results were more accurate, and the calculation errors were within 7%. Compared with the existing calculation methods, the proposed method was more accurate.
- UHPC /
- utility tunnel /
- static test /
- shear performance /
- bearing capacity

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参考文献(23)

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