桥梁抗震2019年度研究进展
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U441.3

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川藏铁路系统性重大科研项目(P2018G007-K04-004);国家自然科学基金(51708466)


State-of-the-art review of seismic design of bridges in 2019
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    摘要:

    桥梁抗震一直是桥梁工程领域内的重要研究方向。归纳总结了2019年桥梁抗震领域的研究成果和发展趋势,主要结论如下:传统钢筋混凝土桥墩地震响应机理研究日益精细化,局部损伤的演化和控制得到更多重视;预制拼装墩在“等同现浇”连接方式之外,探索了兼顾“传力”与“耗能”的多种新型构造;自复位桥墩在强震下可能产生界面消压,导致结构刚度快速下降,是制约其推广的关键问题;大吨位、大变形、高耐候是高性能减隔震装置的发展趋势,引入半主动控制技术具有良好的发展潜力;桥梁抗震研究中更多地考虑了土-结、墩-水相互作用,模型的计算精度和效率都有所提高,多物理场耦合的桥梁抗震研究将成为一个极具潜力的研究方向。

    Abstract:

    Seismic design of bridges is an important branch in bridge engineering. This paper summarized the achievements and development trends of seismic design of bridges in 2019. The main conclusions are as follows: researches on the seismic response mechanism of traditional reinforced concrete bridge piers are becoming more and more refined, and the evolution and control of local damages have received more attention; For prefabricated pier, in addition to the "equivalent cast-in-place" connection, a variety of new configurations that take into account "load transmission" and "energy dissipation" simultaneously have been explored; Self-centering piers may subject to interface decompression under strong earthquakes, resulting in a rapid decrease in the structural stiffness, which is the key problem limiting its promotion; Isolation and energy dissipation devices are developed to having large capacity, deformability, and good weather resistance. Wherein, the semi-active control reveals satisfactory potential; The soil-structure interaction and pier-water interaction are involved more in seismic research, and the calculation accuracy and efficiency of the novel models have been improved. The seismic research of bridges with multi-physics coupling is of great potential.

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赵灿晖,曾显志,邓开来.桥梁抗震2019年度研究进展[J].土木与环境工程学报(中英文),2020,42(5):139-146.

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  • 收稿日期:2020-04-26
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  • 在线发布日期: 2020-11-12
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