1. 西南石油大学 土木工程与测绘学院,成都,610500
2. 西南交通大学 风工程试验研究中心,成都,610031
刘君(1988—),男,四川人,讲师,研究方向:桥梁和结构空气动力学. E-mail:liu.jun@swpu.edu.cn
唐煜*(1987—),男,湖南人,副教授,研究方向:桥梁风致振动及控制. E-mail:tang0107@163.com
纸质出版:2024
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刘君, 倪志福, 温玉芬, 等. 悬臂施工阶段大跨度拱桥抖振响应及抑振措施[J]. 空气动力学学报, 2024, 42(10): 50−59.
LIU Jun, NI Zhifu, WEN Yufen, et al. Buffeting response and mitigation measures of large-span arch bridges during cantilever construction[J]. 2024, 42(10): 50-59.
刘君, 倪志福, 温玉芬, 等. 悬臂施工阶段大跨度拱桥抖振响应及抑振措施[J]. 空气动力学学报, 2024, 42(10): 50−59. DOI: 10.7638/kqdlxxb-2023.0174
LIU Jun, NI Zhifu, WEN Yufen, et al. Buffeting response and mitigation measures of large-span arch bridges during cantilever construction[J]. 2024, 42(10): 50-59. DOI: 10.7638/kqdlxxb-2023.0174.
为了探讨大跨度拱桥悬臂施工阶段的抖振位移响应及相应的抑振措施,以主跨400 m的中承式钢桁架拱桥为研究对象,首先建立了最大悬臂施工阶段拱桥结构的有限元模型,并基于谐波合成法模拟了三维空间脉动风场,然后采用时域分析方法计算了拱肋悬臂端和施工扣塔顶部的抖振位移响应,并利用风洞试验结果进行了对比验证,最后考察了不同抑振措施的减振效果。结果表明:在拱肋悬臂端设置竖向抗风缆能有效减小拱肋的竖向抖振位移响应;同时,设置倾角45°的扣塔抗风缆和拱肋抗风缆,可以使拱肋横桥向、竖向及扣塔横桥向、顺桥向抖振位移响应的减振率分别达到62.5%、84.8%、61.0%和62.7%。此外,采用空间交错方式和竖平面内交错方式“软连接”拱肋悬臂端,可以使拱肋横桥向、竖向及扣塔顺桥向抖振位移响应的减振率分别达到49.5%、95.7%和67.1%。以上结果证明大跨度拱桥悬臂施工期抖振减振效果与抗风措施的布设位置和方式密切相关,应合理选择适合的抗风措施。
In order to study the wind-induced buffeting displacement response and various vibration mitigation strategies of long-span arch bridge during the maximum cantilever construction stage
this study delves into the dynamic behavior of a half-through steel truss arch bridge with a main span of 400 m. Firstly
a detailed finite element model of the arch bridge structure during the maximum cantilever construction phase is established. Then
the three-dimensional pulsating wind field is simulated using the harmonic synthesis method
and the buffeting displacement response at the cantilever end of the arch rib and the top of the buckle tower is calculated employing the time-domain analysis method. These theoretical findings are compared and validated with the wind tunnel test results. Finally
the effectiveness of various vibration mitigation measures is thoroughly examined. The results show that installing vertical wind-resistant cables at the arch rib cantilever end can significantly reduce vertical buffeting displacement. Furthermore
installing wind-resistant cables at a 45° angle for both the buckle tower and the arch rib results in vibration reduction rates of 62.5%
84.8%
61.0%
and 62.7% for the lateral and vertical displacements of the arch rib
and the lateral and along-bridge buffeting displacements of the tower
respectively. Additionally
a spatial staggered connection and a vertical plane staggered soft connection at the cantilever end of the arch rib can lead to notable vibration reduction effects of 49.5%
95.7%
and 67.1% for the lateral and vertical displacements of the arch rib
and the along-bridge buffeting displacement of the tower
respectively. The results above prove that the effectiveness of various vibration mitigation measures of long-span arch bridge during the maximum cantilever construction stage is closely related to the location and mode of wind resistance measures
and appropriate wind resistance measures should be selected reasonably.
HONG G, LI J W, WANG J Y, et al . Flutter performance of a suspended double-deck flat box girder based on a wind tunnel test and numerical simulation[J ] . Journal of Vibration and Shock, 2023 , 42 ( 4 ): 236 − 246 (in Chinese).
ZI P F. Parametric vibration analysis of buckle cable in cable-stayed suspension construction of arch bridge[D]. Chongqing: Chongqing Jiaotong University, 2022 (in Chinese).
ZHANG J J, GUO J P, LIU J . Buffeting response analysis of long-span arch bridge during construction using the cantilever casting with temporary stays method[J ] . Structural Engineers, 2021 , 37 ( 3 ): 183 − 188 (in Chinese).
LI X J, QING R J, ZHU Q, et al . Aerodynamic characteristics and wind-induced vibration performance of long-span three main steel-truss arch bridge[J ] . Journal of Railway Science and Engineering, 2020 , 17 ( 3 ): 628 − 636 (in Chines e).
JIAN B, LI M, LI M S, et al . Influence of wind yaw angle and pylon interference on the buffeting responses of cable-stayed bridges during construction[J ] . Structure and Infrastructure Engineering, 2022 , 18 ( 9 ): 1350 − 1364 .
ZHANG J F, XU X D, LAN X L, et al . Study of stable and shaking response in the mountainous area of large span steel truffle suspension bridges[J ] . Earthquake Engineering and Engineering Dynamics, 2023 , 43 ( 2 ): 247 − 258 (in Chinese).
TAO T Y. Study on buffeting performance of a long-span triple-tower suspension bridge and its mitigation with MTMD[D]. Nanjing: Southeast University, 2015(in Chinese).
SU Z Y, PENG J H . Buffeting-restraining measures for long span cable-stayed bridges at the longest double cantilever construction stage[J ] . Highway Engineering, 2018 , 43 ( 3 ): 146 − 151 (in Chinese).
LIU M H, MENG F C, LI G L, et al . Study of cable balancing system to replace te mporary piers during construction of cable-stayed bridge[J ] . Bridge Construction, 2020 , 50 ( 1 ): 26 − 31 (in Chinese).
HU X H, YANG S Y, LI Y L, et al . Study of buffeting response and suppression measures for composite girder cable-stayed bridge in longest cantilever state during construction[J ] . Bridge Construction, 2021 , 51 ( 1 ): 21 − 28 (in Chinese).
YANG S Y. Study on buffeting response characteristics and wind-proof measures of three-tower cable-stayed bridge in typhoon area during construction[D]. Chengdu: Southwest Jiaotong University, 2021(in Chinese).
ZHANG J G, WEN Z J, YAO J Y, et al . Buffeting responses of a long-span arch bridge under typhoon[J ] . Journal of Xiamen University (Natural Science), 2022 , 61 ( 4 ): 533 − 539 (in Chinese).
ZHAO J, AN L M, REN Y L, et al . Wind tunnel test on buffeting of long-span three-truss steel arch bridge under construction[J ] . Bridge Construction, 2021 , 51 ( 5 ): 29 − 36 (in Chinese).
WEI Y, JIN Z K . Research on wind resistance of stiff-skeleton arch ring of long-span concrete-filled steel tubular arch bridge during vertical rotation construction[J ] . Bridge Construction, 2023 , 53 ( 2 ): 75 − 81 (in Chinese).
TANG Y, TIAN Y, JING C, et al . Effect of different wind-resistance cables' measures on the buffeting response of the longest cantilever of three truss steel arch bridge with long span during construction[J ] . Science Technology and Engineering, 2022 , 22 ( 8 ): 3285 − 3293 (in Chinese).
XIE B R. Wind-resistance research on long-span steel truss arch bridges under construction[D]. Changsha: Hunan University, 2022 (in Chinese).
WEN Y F. Study on the buffeting response of the arch rib and buckle tower during the cantilever construction of large-span steel truss arch bridges[D]. Chengdu: Southwest Petroleum University, 2023(in Chinese).
LUO Y, REN D C, HAN Y, et al . Study on buffeting response of bridge under non-Gaussian wind field[J ] . Acta Aerodynamica Sinica, 2023 , 41 ( 8 ): 107 − 116 (in Chinese).
YU H G, GE Y J, ZHAO L, et al . Time domain analysis of buffeting on Shanghai lupu bridge[J ] . Structural Engineers, 2009 , 25 ( 3 ): 84 − 89 (in Chinese).
交通运输部. 公路桥梁抗风设计规范: JTG/T 3360-01-2018[S]. 北京: 人民交通出版社, 2004.
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