钢管混凝土劲性骨架拱桥拱肋施工控制研究

徐宏; 周敉; 王亚美; 许瑞龙

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铁道工程学报 ›› 2022, Vol. 39 ›› Issue (9) : 50-55.

长大干线：桥梁工程

钢管混凝土劲性骨架拱桥拱肋施工控制研究

徐宏^1**, 周敉², 王亚美¹, 许瑞龙³

作者信息 +

Research on the Construction Control of Arch Rib of Concrete-filled Steel Tube Stiff Skeleton Arch Bridge

XU Hong¹, ZHOU Mi², WANG Yamei¹, XU Ruilong³

Author information +

文章历史 +

摘要

研究目的:在大跨度钢管混凝土劲性骨架拱桥中,劲性骨架安装线形直接影响成拱线形。若控制不当,甚至会造成拱肋合龙困难。依托夜郎河大桥工程实例,通过仿真分析拱肋斜拉扣挂法悬臂拼装架设全过程,结合现场内力及线形实时监控,研究分析大跨径劲性骨架拱桥拱肋施工控制技术。
研究结论:(1)在劲性骨架悬臂拼装时采取拱肋线形和索力双控,以控制拱肋线形为主;(2)在进行仿真分析时,采用节段竖向“0”位移控制索力大小,通过对扣索索力和控制点标高进行调整,竖向位移控制在1 mm误差范围内,得出此时扣索索力;(3)合龙前进行线形两岸联测以及全桥复测,根据拱肋内力及线形的监控结果,通过扣索、缆风索对拱肋进行全面线形、内力合理有效调整;(4)本文提出的拱肋施工控制方法,可有效保证成拱线形和结构应力满足设计和规范要求,对斜拉扣挂法悬臂拼装架设拱肋具有参考价值。

Abstract

Research purposes: In the large-span CFST stiff skeleton arch bridge, the stiff skeleton installation alignment directly affects the arch alignment. And if it is not controlled properly, it may even cause difficulties in the arch rib closure. Based on the project example of Yelang River Bridge, by the simulation analysis of the whole process of cantilever erection of arch ribs with cable-stayed buckle-hanging method, combined with the on-site internal force and real-time monitoring of alignment, the arch rib construction control technology of large-span stiff skeleton arch bridge is studied and analyzed.
Research conclusions:(1) In the cantilever assembly of the stiff skeleton, the arch rib alignment and the cable force were controlled, with the arch rib alignment being the main control. (2) In the simulation analysis, the vertical "0" displacement of the section was used to control the size of the cable force, and the vertical displacement was controlled within 1 mm error by adjusting the cable force and the elevation of the control point to obtain the cable force at this time. (3) Before the closure of the bridge, the joint test of the linear both sides and the whole bridge re-test were carried out. According to the monitoring results of the internal force and alignment of the arch ribs, the alignment and internal force of arch ribs were adjusted reasonably and effectively through the buckling cable and cable wind rope. (4) The construction control method of the arch rib proposed in this paper can effectively ensure that the arch alignment and structural stress meet the design and specification requirements, and it has reference value for the cantilever assembly and erection of the arch rib by the cable-stayed buckle-hanging method.

导出引用

徐宏, 周敉, 王亚美, 等. 钢管混凝土劲性骨架拱桥拱肋施工控制研究[J]. 铁道工程学报, 2022, 39(9): 50-55

XU Hong, ZHOU Mi, WANG Yamei, et al. Research on the Construction Control of Arch Rib of Concrete-filled Steel Tube Stiff Skeleton Arch Bridge[J]. Journal of Railway Engineering Society, 2022, 39(9): 50-55

中图分类号： U448.22+3 U445.464

参考文献

[1] 黄平,付长江,彭通洲.大跨钢管混凝土劲性骨架拱桥施工技术[C]//2012年全国桥梁学术会议论文集. 北京:人民交通出版社,2012:555-560.
Huang Ping, Fu Changjiang, Peng Tongzhou. Construction Technology of Long-Span Concrete-Filled Steel Tubular Rigid Skeleton Arch Bridge [C]// China Highway Society Proceedings of 2012 National Bridge Academic Conference.Beijing:China Communications Press,2012:555-560.
[2] 翁雅谷, 邱国阳, 赵长军,等. 大跨钢管混凝土拱桥合理成拱线形方法研究[J].钢结构, 2016(11):99-101.
Weng Yagu, Qiu Guoyang, Zhao Changjun, etc. Study on Reasonable Arch Shape for Long-Span CFST Arch Bridge [J].Steel Construction,2016(11):99-101.
[3] 邓年春, 李长胜, 郭晓,等. 钢管混凝土劲性骨架拱桥主拱圈施工方法进展[J]. 科学技术与工程, 2021(15):6132-6139.
Deng Nianchun,Li Changsheng,Guo Xiao,etc.Progress of Construction Method of Main Arch Ring of Steel Tube Concrete Stiff Skeleton Arch Bridge[J].Science Technology and Engineering,2021(15):6132-6139.
[4] 任泓锦. 钢管混凝土劲性骨架拱桥主拱圈施工过程受力分析[D]. 长沙:长沙理工大学,2019.
Ren Hongjin. Analysis of Construction Process of Main Arch Ring Arch Bridges Reinforced with Concrete-Filled Steel Tubes[D]. Changsha:Changsha University of Science & Technology,2019.
[5] 游佐巧. 大跨度劲性骨架拱桥拱圈施工技术研究及优化[D]. 重庆:重庆交通大学,2020.
You Zuoqiao. Research and Optimization of Arch Ring Construction Technology for Large-span Stiff Skeleton Arch Bridge[D]. Chongqing:Chongqing Jiaotong University,2020.
[6] 顾颖, 姚昌荣, 李亚东,等. 大跨度钢管混凝土拱桥安装线形控制方法研究[J]. 桥梁建设, 2014(1):107-113.
Gu Ying, Yao Changrong, Li Yadong, etc. Study of Alignment Control Method for Installation of Arch Ribs of Long Span CFST Arch Bridge [J]. Bridge Construction, 2014(1):107-113.
[7] 周彦文, 李书兵, 唐剑. 大跨度钢管混凝土拱桥成拱线形控制技术研究[J]. 施工技术, 2020(2):55-60.
Zhou Yanwen, Li Shubing, Tang Jian. Research on the Control Technology of Arch Shape of Long Span CFST Arch Bridge [J]. Construction Technology, 2020(2): 55-60.
[8] 李成. 大跨度劲性骨架拱桥拱圈施工技术优化设计[D]. 重庆:重庆交通大学,2017.
Li Cheng. Analysis and Construction Optimation for Large Span Stiff Skeleton Arch Bridges [D].Chongqing:Chongqing Jiaotong University,2017.
[9] 付玉辉. 大跨度钢管混凝土拱桥桁架拱肋吊装过程中的线形调整[J]. 北方交通, 2013(1):86-87.
Fu Yuhui. Long-span Concrete-filled Steel Tube Arch Bridge Truss Arch Rib Alignment Adjustment in the Process of Lifting [J]. Northern Communications, 2013(1):86-87.