长江科学院院报 ›› 2023, Vol. 40 ›› Issue (2): 141-146.DOI: 10.11988/ckyyb.20210919

• 水工结构与材料 • 上一篇    下一篇

跨运河钢桁架梁拱组合体系通航渡槽力学性能

董福歧1, 张福强1, 付书林2   

  1. 1.中国铁建大桥工程局集团有限公司,天津 300300;
    2.安徽省七星工程测试有限公司,合肥 230088
  • 收稿日期:2021-08-30 修回日期:2022-01-19 出版日期:2023-02-01 发布日期:2023-03-07
  • 通讯作者: 张福强(1990-),男,黑龙江齐齐哈尔人,工程师,主要研究方向为水利工程。E-mail:1196266559@qq.com
  • 作者简介:董福歧(1972-),男,吉林长春人,高级工程师,主要研究方向为水利工程。E-mail:275792927@qq.com

Mechanical Properties of Navigable Aqueduct with Steel Truss Beam-arch Composite System across Canal

DONG Fu-qi1, ZHANG Fu-qiang1, FU Shu-lin2   

  1. 1. China Railway Construction Bridge Engineering Bureau Group Co.,Ltd.,Tianjin 300300,China;
    2. Anhui Qixing Engineering Testing Co.,Ltd.,Hefei 230088,China
  • Received:2021-08-30 Revised:2022-01-19 Online:2023-02-01 Published:2023-03-07

摘要: 依托引江济淮工程淠河总干渠渡槽工程,对110 m世界最大跨度钢渡槽,采用数值计算和现场试验相结合的方法,对跨运河钢桁架梁拱组合体系新型钢渡槽结构的力学性能进行评价。首先,通过现场充水试验,对承受超级可变水荷载的钢渡槽结构关键截面应变和变形进行重点监测,比较监测数据与数值计算结果,分析评价结构静力性能。其次,通过现场脉动试验测试不同水位下结构的自振频率,并与数值分析结果对比,分析评价结构动力性能。充水试验结果表明,淠河总干渠新型钢渡槽处于安全状态,承载力满足设计要求。研究成果可为类似工程提供技术参考。

关键词: 淠河总干渠, 钢渡槽, 钢桁架, 充水试验, 力学性能, 安全评价

Abstract: In this paper,the mechanical properties of the new steel aqueduct structure with steel truss beam-arch composite system across the canal are evaluated by means of numerical calculation and field test.The studied 110-metre steel aqueduct of Pihe River main canal of the Hanjiang-Weihe River Water Diversion Project has the largest span in the world.First,the strain and deformation of the key sections of the steel aqueduct structure under super varying water load are monitored through field water filling test,and the static performance of the structure is analyzed and evaluated by comparing the monitoring data with the numerical calculation results.Second,the natural vibration frequency of the structure under different water levels is tested by field pulsation test,and later compared with the numerical analytical results.The dynamic performance of the structure is also analyzed and evaluated.The results of water filling test demonstrate that the new steel aqueduct of Pihe main canal is in safe condition and the bearing capacity meets the design requirements.The research results could serve as a technical reference for similar projects.

Key words: main canal of Pihe River, steel aqueduct, steel truss, water filling test, mechanical properties, safety evaluation

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