[1]马宇坤,淳庆.明代石拱桥永昌桥的动力特性及其抗震性能分析[J].华侨大学学报(自然科学版),2023,44(3):336-345.[doi:10.11830/ISSN.1000-5013.202209026]
　MA Yukun,CHUN Qing.Analysis of Dynamic Characteristics and Seismic Performance of Yongchang Stone Arch Bridge in Ming Dynasty[J].Journal of Huaqiao University(Natural Science),2023,44(3):336-345.[doi:10.11830/ISSN.1000-5013.202209026]
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明代石拱桥永昌桥的动力特性及其抗震性能分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第44卷
期数:
2023年第3期
页码:
336-345
栏目:
出版日期:
2023-05-12

文章信息/Info

Title:
Analysis of Dynamic Characteristics and Seismic Performance of Yongchang Stone Arch Bridge in Ming Dynasty
文章编号:
1000-5013(2023)03-0336-10
作者:
马宇坤;  淳庆
东南大学 建筑学院, 江苏 南京 210096
Author(s):
MA Yukun;  CHUN Qing
School of Architecture, Southeast University, Nanjing 210096, China
关键词:
明代三孔石拱桥;  动力特性;  抗震性能;  抗震加固;  永昌桥
Keywords:
3 holes stone arch bridge in Ming Dynasty;  dynamic characteristic;  seismic performance;  seismic strengthening;  Yongchang Bridge
分类号:
U448.322.55
DOI:
10.11830/ISSN.1000-5013.202209026
文献标志码:
A
摘要:
为研究明代三孔石拱桥的抗震性能,建立永昌桥的三维有限元模型,并分析其动力特性、振型分解反应谱和地震时程,得出固有频率、模态振型、地震作用效应、地震位移,以及地震应力响应.结果表明:三孔石拱桥的第3阶扭转振型频率与前两阶平动振型频率相差不大;在抗震设防烈度为7度、E1和E2地震作用下,三孔石拱桥受力最危险的是雁翅桥台与次孔拱券交接处、分水尖与次孔拱券交接处,其他拱脚、拱券和拱顶桥面也易发生拉裂破坏.
Abstract:
In order to study the seismic performance of the 3 holes stone arch bridge in Ming Dynasty, a 3-dimensional finite element model of Yongchang Bridge was established, and its dynamic characteristics, mode decomposition response spectrum and seismic time history were analyzed. The natural frequency, mode shape, seismic action effect, seismic displacement, and seismic stress response were obtained. The results show that there is little difference between the 3rd torsional mode frequency and the 1st-2nd translational mode frequencies of the 3 holes stone arch bridge. Under the E1 and E2 seismic action with the 7 degrees seismic fortification intensity, the most dangerous force parts of the 3 holes stone arch bridge are the junction of the wild goose wing abutment and the secondary arch, and the junction of the water diversion tip and the secondary arch. Other arch feet, arches and arch crown decks are also vunerable to tensile damage.

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备注/Memo

备注/Memo:
收稿日期: 2022-09-26
通信作者: 淳庆(1979-),男,教授,博士,博士生导师,主要从事历史建筑保护、结构安全评估的研究.E-mail:cqnj1979@163.com.
基金项目: 国家自然科学基金资助项目(52078111)
更新日期/Last Update: 2023-05-20