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大跨PC连续刚构桥抗震研究进展综述

王东升 童磊 王荣霞 孙治国

王东升, 童磊, 王荣霞, 孙治国. 大跨PC连续刚构桥抗震研究进展综述[J]. 西南交通大学学报, 2023, 58(3): 511-526. doi: 10.3969/j.issn.0258-2724.20210529
引用本文: 王东升, 童磊, 王荣霞, 孙治国. 大跨PC连续刚构桥抗震研究进展综述[J]. 西南交通大学学报, 2023, 58(3): 511-526. doi: 10.3969/j.issn.0258-2724.20210529
WANG Dongsheng, TONG Lei, WANG Rongxia, SUN Zhiguo. Review on Advances in Seismic Research of Large-Span Prestressed-Concrete Continuous Rigid-Frame Bridges[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 511-526. doi: 10.3969/j.issn.0258-2724.20210529
Citation: WANG Dongsheng, TONG Lei, WANG Rongxia, SUN Zhiguo. Review on Advances in Seismic Research of Large-Span Prestressed-Concrete Continuous Rigid-Frame Bridges[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 511-526. doi: 10.3969/j.issn.0258-2724.20210529

大跨PC连续刚构桥抗震研究进展综述

doi: 10.3969/j.issn.0258-2724.20210529
基金项目: 国家自然科学基金(51778206)
详细信息
    作者简介:

    王东升(1974—),男,教授,博士,研究方向为桥梁及结构工程抗震,E-mail: dswang@hebut.edu.cn

  • 中图分类号: U442.55

Review on Advances in Seismic Research of Large-Span Prestressed-Concrete Continuous Rigid-Frame Bridges

  • 摘要:

    我国已建设大量的大跨PC (prestressed concrete)连续刚构桥,其墩高可达百米及以上,存在遭受强震的可能,尤其是在西部高地震风险区,连续刚构桥主墩与主梁是刚性连接,主梁与桥墩共同承担地震力. 为促进刚构桥的抗震研究,首先,梳理了国内外近期经受地震考验的几座刚构桥的震害表现;然后,从抗震理论及模型试验、减隔震(耗能)设计和震后修复等方面,对连续刚构桥桥墩、上部结构、基础等主要构件以及全桥整体抗震性能等热点问题进行了评述,刚构桥具有良好的抗震性能,高阶效应及墩梁固结处纵桥向弯矩对桥墩地震反映影响较大,模型试验及理论分析中主梁开裂及损伤问题易被忽视,低墩或双柱墩刚构桥已展开墩底及基础隔震研究;最后,对未来可开展研究方向进行了探讨,强震下箱梁的开裂机理及损伤控制,基于新型材料及耗能构件组成的高墩,基础隔震及高墩底部隔震的实用技术,箱梁及空心墩的地震损伤识别及震后修复,(近)跨断层地震作用下刚构桥的渐进倒塌机理与防止.

     

  • 图 1  刚构桥的震害

    Figure 1.  Seismic damage of prestressed concrete continuous rigid-frame bridges

    图 2  东海湾大桥桥墩构造[14](单位:cm)

    Figure 2.  Pier structure of East Bay Bridge[14](unit:cm)

    图 3  South Rangitikei桥摇摆结构[34]

    Figure 3.  Rocking structure in South Rangitikei bridge[34]

    图 4  桥墩水平位移比[6]

    Figure 4.  Horizontal displacement ratio of piers[6]

    图 5  蝶形腹板刚构桥

    Figure 5.  Continuous rigid-frame bridge with butterfly webs

    图 6  钢桁腹板PC刚构桥

    Figure 6.  Prestressed concrete continuous rigid-frame bridge with steel truss webs

    图 7  主梁耗能装置内部构造[61]

    Figure 7.  Internal structure of girder energy dissipation device[61]

    图 8  PC连续刚构桥塑性区域[76]

    Figure 8.  Plastic hinge region of prestressed concrete continuous rigid-frame bridge [76]

    图 9  隔震套管

    Figure 9.  Isolation casing

    表  1  发生震害的刚构桥基本信息

    Table  1.   Basic information of continuous rigid-frame bridges damaged in earthquakes m

    大桥名称跨径主墩墩高
    能登岛大桥75.0 + 108.5 + 75.024.4/24.4
    庙子坪特大桥125.0 + 220.0 + 125.0102.5/99.5
    阿苏长阳大桥39.3 + 91.0 + 91.0 + 53.337.0/68.0/33.0
    注:能登岛大桥跨径及墩高为估算值.
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-06-27
  • 修回日期:  2021-09-30
  • 网络出版日期:  2023-04-01
  • 刊出日期:  2021-10-20

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