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Abstract

To evaluate the safety of large cantilever steel truss beams in traverse construction, this paper proposed a method of evaluating the safety factor of anti-overturning stability of large cantilever steel truss beams based on the reliability inversion theory. Under the premise of giving the target reliability index and considering the randomness of the structural parameters, this method adopted the reliability inversion theory to solve the anti-overturning safety factor of large cantilever steel truss beams in traverse construction. Finally, the method was utilized to study the anti-overturning stability of the 82 m large cantilever steel truss beam of Weilai High-speed Railway and analyze the sensitivity of the parameters. The calculation results show that in traverse construction of large cantilever steel truss beams, ignoring the effect of parameter uncertainty will result in overestimation of the safety factor of anti-overturning stability of the structure. The safety factor of anti-overturning stability is most sensitive to the two parameters of traverse counterweight mass and counterweight distance. Specifically, the safety factor of large cantilever steel truss beams’ anti-overturning stability decreases rapidly with the increasing variability of the two parameters.

Publication Date

9-14-2023

DOI

10.14048/j.issn.1671-2579.2023.04.014

First Page

87

Last Page

91

Submission Date

March 2025

Reference

[1] 吴海涛, 李鸥. 大跨连续钢桁梁架设施工控制分析[J]. 公路工程, 2012, 37(2): 137-141+157. WU Haitao, LI Ou. Construction control of long span continuous steel-trussed girder bridge[J]. Highway Engineering, 2012, 37(2): 137-141+157. [2] 袁理, 黄影, 赵宇清. 悬索桥浅滩区钢桁梁吊装施工新技术[J]. 中外公路, 2019, 39(3): 155-157. YUAN Li, HUANG Ying, ZHAO Yuqing. New construction method for hoisting steel truss girders in shoal area of suspension bridges[J]. Journal of China & Foreign Highway, 2019, 39(3): 155-157. [3] 王通芳. 钢桁架梁整体横向滑移施工技术及力学特性研究[D]. 西安: 西安科技大学, 2019. WANG Tongfang. Research on construction technology and mechanical characteristics of integral transverse sliding construction of steel joist girders. Xi’an: Xi’an University of Science and Technology, 2019. [4] 周文博, 许凯峰, 杨立群, 等. 大跨径自锚式悬索桥钢箱梁制造技术[J]. 公路交通科技, 2021, 38(S1): 96-100. ZHOU Wenbo, XU Kaifeng, YANG Liqun, et al. Manufacturing technology of steel box girder of long-span self-anchored suspension bridge[J]. Journal of Highway and Transportation Research and Development, 2021, 38(S1): 96-100. [5] 张志伟. 斜拉桥悬臂施工结构分析及控制对策研究[D]. 济南: 山东交通学院, 2021. ZHANG Zhiwei. Structural analysis and control countermeasures of cantilever construction of cable-stayed bridge[D]. Jinan: Shandong Jiaotong University, 2021. [6] 边海滨. 基于逆可靠度法的三塔悬索桥主缆与中塔鞍座抗滑安全系数研究[J]. 中外公路, 2020, 40(2): 111-114. BIAN Haibin. Research on anti-slip safety factor between main cable and saddle of three-tower suspension bridge based on inverse reliability method[J]. Journal of China & Foreign Highway, 2020, 40(2): 111-114. [7] 章劲松. 基于可靠度的公路桥梁结构极限状态设计计算原则及应用[D]. 合肥: 合肥工业大学, 2007. ZHANG Jinsong. Design and calculation principle of limit state of highway bridge structure based on reliability and its application[D]. Hefei: Hefei University of Technology, 2007. [8] 程进, 肖汝诚. 基于逆可靠度法的大跨悬索桥主缆安全系数评估[J]. 中国公路学报, 2007, 20(1): 58-61. CHENG Jin, XIAO Rucheng. Main cable safety factors assessment of long-span suspension bridges based on inverse reliability method[J]. China Journal of Highway and Transport, 2007, 20(1): 58-61. [9] 刘杰, 杨吉新, 董峰辉. 大跨度连续梁桥悬臂施工整体抗倾覆稳定安全系数评估[J]. 中国公路学报, 2018, 31(3): 89-95. LIU Jie, YANG Jixin, DONG Fenghui. Safety factors assessment of resistant overturning stability of long-span continuous girder bridges in cantilever construction[J]. China Journal of Highway and Transport, 2018, 31(3): 89-95. [10] 楼灿洪, 董峰辉. 连续梁桥悬臂施工整体倾覆稳定安全系数研究[J]. 武汉大学学报(工学版), 2017, 50(2): 264-268. LOU Canhong, DONG Fenghui. Study of overturning stability safety factors of continuous girder bridges during cantilever construction[J]. Engineering Journal of Wuhan University, 2017, 50(2): 264-268. [11] 骆佐龙, 徐航, 董峰辉. 基于可靠度逆分析理论的公路挡土墙稳定安全系数研究[J]. 结构工程师, 2020, 36(2): 65-70. LUO Zuolong, XU Hang, DONG Fenghui. Study on stability safety factors of highway retaining wall based on inverse reliability theory[J]. Structural Engineers, 2020, 36(2): 65-70. [12] 崔凤坤, 王虎军, 徐岳, 等. 基于BP神经网络和粒子群算法的钢管混凝土拱桥可靠度分析[J]. 合肥工业大学学报(自然科学版), 2016, 39(8): 1103-1109. CUI Fengkun, WANG Hujun, XU Yue, et al. Reliability analysis of CFST arch bridges based on BP neural network and PSO algorithm[J]. Journal of Hefei University of Technology (Natural Science), 2016, 39(8): 1103-1109. [13] CHENG J, ZHANG J, CAI C S, et al. A new approach for solving inverse reliability problems with implicit response functions[J]. Engineering Structures, 2007, 29(1): 71-79. [14] 金辉, 朱谊彪, 徐岳, 等. 基于逆可靠度理论的连续刚构桥稳定性分析[J]. 铁道科学与工程学报, 2018, 15(2): 422-426. JIN Hui, ZHU Yibiao, XU Yue, et al. Stability analysis of the continuous rigid frame bridge based on inverse reliability method[J]. Journal of Railway Science and Engineering, 2018, 15(2): 422-426. [15] LI H, FOSCHI R O. An inverse reliability method and its application[J]. Structural Safety, 1998, 20(3): 257-270.

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