•  
  •  
 

Abstract

Based on the Linyi Huanghe River Bridge project in Shanxi, this paper conducted a study on the wind-induced jitter response and control measures of the maximum cantilever state during the jacking construction period of the steel box girders of long-link steel on high piers-concrete composite structure bridges. Meanwhile, the quasi-steady theory was adopted to consider the jitter force and aerodynamic self-excited force of the steel box girder's section and steel launching nose's section. Additionally, the harmonic synthesis method was utilized to simulate the wind speed time history of turbulent wind fields at the bridge location, with the wind-induced jitter response of the steel box girders in the maximum cantilever state calculated in the time domain. Based on the actual characteristics and construction methods of bridge structures, it was proposed to employ lower cable wind resistance measures to control the wind-induced jitter response of steel box girders in the maximum cantilever state during jacking. Additionally, the finite element analysis method was leveraged to calculate and analyze the control effect of wind resistance measures during the construction period. The results show that the maximum cantilever state of the steel box girders is 0.4507 Hz for the first-order vertical bending natural frequency of the steel launching noses, and 0.5344 Hz for the first-order lateral bending natural frequency of the steel launching noses. When the design wind speed at the height of the main girder is 39.4 m/s, the instantaneous extreme of the vertical displacement response at the cantilever end of the steel launching noses is 0.6314 m, and that of the lateral displacement response at the cantilever end of the steel launching noses is 0.1911 m. Temporary wind resistance measures with lower cables installed near the cantilever end of the steel launching noses can improve the vertical stiffness of the bridge structures and reduce the jitter displacement response at the cantilever end of steel launching noses, thereby increasing the maximum vertical natural frequency of the steel launching noses in the cantilever state of the bridge structures. As the stiffness of the lower cables rises, the vibration suppression efficiency increases nonlinearly. When the vertical displacement reduction ratio at the cantilever end reaches about 60%, the control effect becomes less prominent.

Publication Date

11-8-2022

DOI

10.14048/j.issn.1671-2579.2022.05.019

First Page

102

Last Page

109

Submission Date

April 2025

Reference

[1] TANAKA H,LARSENGL,KIMURAK.Aerodynamics of Long Span Bridges during Erection[J].Bridge Aerodynamics,1998:119-127. [2] 夏烨, 简旭东, 孙利民, 等. 大跨桥梁主塔施工阶段塔吊风致振动与安全性研究[J]. 中外公路, 2020, 40(5): 93-99. XIA Ye, JIAN Xudong, SUN Limin, et al. Journal of China & Foreign Highway, 2020, 40(5): 93-99. [3] 江帆, 吴超, 张家玮. 桥塔临时附着结构风致抖振响应时域分析[J]. 中外公路, 2020, 40(5): 186-191. JIANG Fan, WU Chao, ZHANG Jiawei. Journal of China & Foreign Highway, 2020, 40(5): 186-191. [4] DIANA G, YAMASAKI Y, LARSEN A, et al. Construction stages of the long span suspension izmit bay bridge: wind tunnel test assessment[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2013, 123: 300-310. [5] KAVRAKOVI,MORENTHAL G.A Comparative Assessment of Aerodynamic Models for Buffeting and Flutter of Long-Span Bridges[J].Engineering,2017,3:823-838. [6] 宫成, 刘志文, 谢钢, 等. 高墩大跨斜拉桥悬臂施工期风致振动控制[J]. 工程力学, 2015, 32(S1): 122-128. GONG Cheng, LIU Zhiwen, XIE Gang, et al. Control of wind-induced vibration in large span cable-stayed bridge with high piers during cantilever construction stages[J]. Engineering Mechanics, 2015, 32(S1): 122-128. [7] BULLIVANT L.Architectural Record, Millau Viaduct, France[J].Architectural Record,2005,193(2):32. [8] HORACIOZ,ENRIQUEP,ALBERTO P, et al. Design and Construction of “Chiapas” Bridge, Mexico[J].IABSE Symposium Report,2002:1-8. [9] 张茜, 周绪红, 狄谨, 等. 大跨度钢箱梁斜拉桥施工过程风致抖振时域分析及抗风措施[J]. 长安大学学报(自然科学版), 2013, 33(1): 45-50, 66. ZHANG Xi, ZHOU Xuhong, DI Jin, et al. Time-domain analysis of wind-induced buffet and wind-resistant measures for cable-stayed bridge with steel box girder at construction stage[J]. Journal of Chang’an University (Natural Science Edition), 2013, 33(1): 45-50, 66. [10] YANLei,RENLei,HEXuhui,etal. Experimental Study of Buffeting Control of Ping tang Bridge during Construction[J].Journal of Bridge Engineering,2020,25(8):05020004. [11] SEARS W R. Some aspects of non-stationary airfoil theory and its practical application[J]. Journal of the Aeronautical Sciences, 1941, 8(3): 104-108. [12] LIEPMANN H W. On the application of statistical concepts to the buffeting problem[J]. Journal of the Aeronautical Sciences, 1952, 19(12): 793-800. [13] 国家质量监督检验检疫总局, 中国国家标准化管理委员会. 重要用途钢丝绳: GB/T 8918—2006[S]. 北京: 中国标准出版社, 2006. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China, Standardization Administration of the People’s Republic of China. Steel wire ropes for important purposes: GB/T 8918—2006[S]. Beijing: Standards Press of China, 2006.

Download

Share

COinS