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Abstract

In recent years, with the rapid development of urban bridge construction, the bridge inevitably needs to cross the existing railway and road in the construction project. This kind of bridge has the characteristics of a large span and limited pier space. At the same time, in order to meet the increasing traffic demand, the transverse width of the bridge is increasing, so the application of large cantilever wing-box girder structures is becoming more and more extensive. Based on the overspan railway bridge project of the northern section of the Wuhan Fourth Ring Line (Wuhu–Wujiashan), this paper introduced the design difficulties of super-large cantilever continuous beam bridges, analyzed the structural stress characteristics and stress states through theoretical calculation, and put forward solutions and measures from the perspective of structural design, providing a reference for the design of similar projects in the future.

Publication Date

7-14-2023

DOI

10.14048/j.issn.1671-2579.2023.03.015

First Page

97

Last Page

101

Submission Date

March 2025

Reference

[1] 刘润舟. (70+125+70)m跨铁路转体连续梁桥设计[J]. 铁道标准设计, 2013,57(12): 67-70. LIU Runzhou. Design of (70+125+70) m continuous girder bridge by swing method crossing above existing railways[J]. Railway Standard Design, 2013, 57(12): 67-70. [2] 王标新, 朱国华. 大悬臂展翼斜腹板连续箱梁在城市桥梁中的设计与应用[J]. 中外公路, 2010, 30(1): 159-162. WANG Biaoxin, ZHU Guohua. Design and application of large cantilever spanning slant web continuous box girder in urban bridges[J]. Journal of China & Foreign Highway, 2010, 30(1): 159-162. [3] 徐岩. 大悬臂展翅箱梁悬臂长度分析[J]. 三峡大学学报(自然科学版), 2012,34(4): 55-58. XU Yan. Cantilever length analysis of large cantilever wing-box girder[J]. Journal of China Three Gorges University (Natural Sciences), 2012, 34(4): 55-58. [4] 丁延书, 罗浩, 宋旭明, 等. 超大悬臂箱梁的施工挂篮构造设计及受力分析[J]. 建筑施工, 2018,40(5): 749-751. DING Yanshu, LUO Hao, SONG Xuming, et al. Structural design and force analysis of construction hanging baskets for ultra-large cantilever box girder[J]. Building Construction, 2018, 40(5): 749-751. [5] 施顺涛. 展翅梁在深圳火车站高架桥中的应用[J]. 铁道标准设计, 1994, 37(3):21-23. SHI Shuntao. Application of spanning beam in viaduct of Shenzhen railway station[J]. Railway Standard Design, 1994, 37(3):21-23. [6] 杨柏松. 横向大悬臂箱梁桥模型与曲线箱梁桥模型受力状态特征分析[D]. 哈尔滨: 哈尔滨工业大学, 2020. YANG Baisong. Analysis of mechanical state characteristics of transverse large cantilever box girder bridge model and curved box girder bridge model[D]. Harbin: Harbin Institute of Technology, 2020. [7] 乐小刚, 余晓琳. 大悬臂预应力宽箱梁桥空间效应研究[J]. 城市道桥与防洪, 2017(1): 43-46+8-9. LE Xiaogang, YU Xiaolin. Study on spatial effect of long-cantilever pre-stressed wide-box girder bridge[J]. Urban Roads Bridges & Flood Control, 2017(1): 43-46+8-9. [8] 肖金梅. 大悬臂展翅混凝土连续箱梁桥横向受力分析[D]. 广州: 华南理工大学, 2015. XIAO Jinmei. Lateral force analysis of long cantilever spanning concrete continuous box girder bridge[D]. Guangzhou: South China University of Technology, 2015. [9] 肖金梅, 颜全胜. 横隔板对大悬臂展翅箱梁横向受力的影响分析[J]. 广东公路交通, 2016,42(5): 48-51. XIAO Jinmei，, YAN Quansheng. Analysis on affection of diaphragm on transverse stress of large cantilever wing box girder[J]. Guangdong Highway Communications, 2016, 42(5): 48-51. [10] 陈亮. 展翅大悬臂斜腹板预应力混凝土连续箱梁剪力滞效应分析[D]. 长沙: 中南大学, 2013. CHEN Liang. Analysis of shear lag effect of prestressed concrete continuous box girder with large cantilever and inclined web[D]. Changsha: Central South University, 2013. [11] 雒家琪, 董毓利, 赵明岩. 集中荷载和均布荷载作用下悬臂箱梁剪力滞效应试验[J]. 华侨大学学报(自然科学版), 2022,43(1): 44-50. LUO Jiaqi, DONG Yuli, ZHAO Mingyan. Test on shear lag effect of cantilever box girder under concentrated load and uniformly distributed load[J]. Journal of Huaqiao University (Natural Science), 2022, 43(1): 44-50. [12] 郭增伟, 李龙景, 张俊波. 变截面悬臂箱梁剪力滞效应的比拟杆分析方法[J]. 土木工程学报, 2019,52(8): 72-80. GUO Zengwei, LI Longjing, ZHANG Junbo. Theoretical analysis for shear-lag effect of variable box section cantilever girder based on bar simulation method[J]. China Civil Engineering Journal, 2019, 52(8): 72-80. [13] 刘志宏, 宗金东, 熊红霞. 大悬臂斜腹板箱梁力学分析的空间网格模型探讨[J]. 交通科技, 2019(5): 52-54+59. LIU Zhihong, ZONG Jindong, XIONG Hongxia. Discussion on space network model for mechanical analysis of inclined web box girder with large cantilever[J]. Transportation Science & Technology, 2019(5): 52-54+59. [14] 严松, 颜鹏飞. 某大悬臂翼缘板连续梁桥裂缝成因分析及加固研究[J]. 交通科技, 2019(4): 41-44. YAN Song, YAN Pengfei. Study on cause of cracks and reinforcement measures of a continuous box girder bridge with large cantilever plate[J]. Transportation Science & Technology, 2019(4): 41-44. [15] 陈平燕. 大悬臂薄腹板连续箱梁桥腹板开裂病害原因分析及加固方法研究[J]. 公路, 2019, 64(3): 115-119. CHEN Pingyan. Cause analysis and reinforcement method research on web cracking of continuous box girder bridge with large cantilever and thin web[J]. Highway, 2019, 64(3): 115-119. [16] 彭崇梅, 李小年, 赵勇. 在役大悬臂箱梁桥顶板加劲腋纵向开裂成因分析[J]. 公路, 2017,62(4): 75-78. PENG Chongmei, LI Xiaonian, ZHAO Yong. Analysis of reason for longitudinal cracks on top deck haunches of existing long-span continuous girder bridge with broad flange box girder[J]. Highway, 2017, 62(4): 75-78. [17] 贾布裕, 余晓琳, 杨铮, 等. 大悬臂展翅预应力混凝土箱梁桥极限承载力影响因素分析[J]. 中外公路, 2016, 36(6): 89-92. JIA Buyu, YU Xiaolin, YANG Zheng, et al. Analysis of influencing factors on ultimate bearing capacity of prestressed concrete box girder bridge with large cantilever wings[J]. Journal of China & Foreign Highway, 2016, 36(6): 89-92. [18] 沈翔, 吉伯海, 肖龙, 等. 钢箱梁横隔板-U肋疲劳裂纹钢板加固参数分析[J]. 科学技术与工程, 2022, 22(34): 15245-15251. SHEN Xiang, JI (BaiBo)(Hai), XIAO Long, et al. Parameters analysis of steel plate reinforcement for fatigue crack of diaphragm U-rib welded joint in steel box girder[J]. Science Technology and Engineering, 2022, 22(34): 15245-15251. [19] 吴岩. 横隔板布置对不同斜交角度简支钢箱梁受力影响分析[J]. 工程技术研究, 2020, 5(22): 1-3. WU Yan. Analysis of the influence of diaphragm layout on the stress of simply supported steel box girders with different oblique angles[J]. Engineering and Technological Research, 2020, 5(22): 1-3. [20] 余晓琳, 贾布裕, 杨铮, 等. 大悬臂展翅预应力混凝土宽箱梁桥极限承载力分析[J]. 铁道科学与工程学报, 2015,12(6): 1379-1386. YU Xiaolin, JIA Buyu, YANG Zheng, et al. Analysis of ultimate bearing capacity of prestressed concrete box-girder bridge with large-cantilever-wing[J]. Journal of Railway Science and Engineering, 2015, 12(6): 1379-1386. [21] 聂磊. 考虑横向预应力施工误差的大悬臂箱梁桥面板可靠度分析[D]. 武汉: 华中科技大学, 2016. NIE Lei. Reliability analysis of large cantilever box girder bridge deck considering transverse prestress construction error[D]. Wuhan: Huazhong University of Science and Technology, 2016. [22] 刘新华, 李秋, 彭元诚, 等. 湖北云南庄特大桥设计关键技术[J]. 中外公路, 2021,41(1): 112-116. LIU Xinhua, LI Qiu, PENG Yuancheng, et al. Key design techniques for Yunnanzhuang bridge in Hubei[J]. Journal of China & Foreign Highway, 2021, 41(1): 112-116. [23] 苏红军. 混凝土箱梁桥剪应力偏载系数简化计算方法[J]. 中外公路, 2020,40(1): 155-159. SU Hongjun. A simplified method of calculating eccentric-load coefficient of shear stress for concrete box girders[J]. Journal of China & Foreign Highway, 2020, 40(1): 155-159. [24] 交通运输部. 公路钢筋混凝土及预应力混凝土桥涵设计规范: JTG 3362—2018[S]. 北京: 人民交通出版社, 2018. Specifications for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts: JTG 3362—2018[S]. Beijing: China Communications Press, 2018.

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