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Abstract

Single-box multi-cell wide girders are widely applied in highway and urban bridges due to their excellent integrity and large width, especially with increasing traffic volumes. However, existing methods for calculating the off-load increase coefficient of single-box multi-cell wide girders are either too complex or fail to meet engineering needs, limiting their applicability in preliminary design. This paper explores eight influencing factors of the off-load increase coefficient, calculates the coefficients using the transverse frame method, and proposes an empirical formula for the off-load increase coefficient. The proposed formula is validated using the Xiushui Street Wide Girder Bridge in Jilin City.

Publication Date

5-11-2023

DOI

10.14048/j.issn.1671-2579.2023.02.017

First Page

96

Last Page

99

Submission Date

March 2025

Reference

[1] 董爱平, 郭增伟, 李龙景. 混凝土宽箱梁汽车偏载效应分析[J]. 土木工程与管理学报, 2018, 35(6): 117-122, 156. DONG Aiping, GUO Zengwei, LI Longjing. Study on eccentric load effect of wide-flange concrete box-girder under offset loaded vehicles[J]. Journal of Civil Engineering and Management, 2018, 35(6): 117-122, 156. [2] 彭德运, 丁敬, 李正. 城市高架桥连续宽箱梁空间效应研究[J]. 公路, 2012, 57(8): 134-138. PENG Deyun, DING Jing, LI Zheng. Study on Spatial Effect of Continuous Wide Box Girder of Urban Viaduct[J]. Highway, 2012, 57(8): 134-138. [3] 马兆锐, 秦道标, 黄正荣, 等. 基于实体单元的等截面宽箱梁有限元分析[J]. 公路, 2017, 62(12): 134-139. MA Zhaorui, QIN Daobiao, HUANG Zhengrong, et al. Finite element analysis of wide box girder with constant section based on solid element[J]. Highway, 2017, 62(12): 134-139 [4] 程翔云. 连续箱梁桥内力增大系数的计算模型[J]. 重庆交通学院学报, 2006, 25(2): 8-11, 15. CHENG Xiangyun. Calculating model determining increasing coefficient of internal forces for continuous box girder bridges[J]. Journal of Chongqing Jiaotong University, 2006, 25(2): 8-11, 15. [5] 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. [6] 钟新谷, 舒小娟, 张昊宇. 预应力混凝土箱梁横向框架效应有限元分析[J]. 计算力学学报, 2013, 30(4): 549-553. ZHONG Xingu, SHU Xiaojuan, ZHANG Haoyu. Finite element analysis on transversal frame-effect of prestressed concrete box-girder bridge[J]. Chinese Journal of Computational Mechanics, 2013, 30(4): 549-553. [7] 朱怡, 徐栋. 箱梁活载正应力和剪应力放大系数讨论[J]. 结构工程师, 2006, 22(4): 29-33, 40. ZHU Yi, XU Dong. Discussion on the amplification coefficient for stress calculation in box girders[J]. Structural Engineers, 2006, 22(4): 29-33, 40. [8] 丛欣建. 箱梁的扭转畸变分析[D]. 哈尔滨: 东北林业大学, 2005. CONG Xinjian. Torsional distortion analysis of box girder[D]. Harbin: Northeast Forestry University, 2005. [9] 赵超. 箱梁扭转和畸变的有限元分析[D]. 湘潭: 湖南科技大学, 2013. ZHAO Chao. Finite element analysis of torsion and distortion of box girder[D]. Xiangtan: Hunan University of Science and Technology, 2013. [10] 彭静, 谢涛, 钱由胜. 连续箱梁桥荷载试验中梁格模型与单梁模型计算对比研究[J]. 施工技术, 2018, 47(14): 52-54, 76. PENG Jing, XIE Tao, QIAN Yousheng. Comparative study on calculation of continuous box girder using grillage model and single girder model in bridge load test[J]. Construction Technology, 2018, 47(14): 52-54, 76. [11] 张珂苑. 正对称荷载作用下单箱三室箱梁弯曲的空间力学行为理论与试验研究[D]. 兰州: 兰州交通大学, 2017. ZHANG Keyuan. Theoretical and experimental study on spatial mechanical behavior of single-box three-room box girder bending under symmetrical load[D]. Lanzhou: Lanzhou Jiatong University, 2017. [12] 黄运林, 杨聪, 万和安, 等. 石首长江公路大桥宽幅短线预制混凝土箱梁横向受力有限元计算模型分析[J]. 中外公路, 2019, 39(1): 101-104. HUANG Yunlin, YANG Cong, WAN Hean, et al. Finite element model analysis of lateral force of wide short-line precast concrete box girder of Shishou Yangtze River Highway Bridge[J]. Journal of China & Foreign Highway, 2019, 39(1): 101-104. [13] 程观奇, 王博. 基于梁格法的单箱多室宽箱梁偏载系数研究[J]. 四川建筑, 2019, 39(1):164-166. CHENG Guanqi, WANG Bo. Study on eccentric load coefficient of single-box multi-room wide box girder based on grillage method[J]. Sichuan Architecture, 2019, 39(1):164-166. [14] 孙恒. 单箱多室宽箱梁偏载系数敏感性研究[J]. 公路交通科技(应用技术版), 2017(5): 199-200. SUN Heng. Study on sensitivity of eccentric load coefficient of single-box multi-room wide box girder[J]. Journal of Highway and Transportation Research and Development, 2017(5): 199-200. [15] 郭兴, 何川. 宽箱梁桥偏载增大系数的讨论[J]. 建设科技, 2016(14): 152-153. GUO Xing, HE Chuan. Discussion on increasing coefficient of eccentric load of wide box girder bridge[J]. Construction Science and Technology, 2016(14): 152-153.

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