受压板肋加劲板整体稳定计算方法

赵秋; 陈鹏; 林志平; 张骏超

doi:10.3724/j.gyjzG22020911

受压板肋加劲板整体稳定计算方法

doi: 10.3724/j.gyjzG22020911

赵秋¹,
陈鹏^1, ,,
林志平^2,3,
张骏超¹

1. 福州大学土木工程学院, 福州 350108;
2. 福建省高速路桥建设发展有限公司, 福建厦门 361000;
3. 福建省高速公路工程重点实验室, 福建厦门 361000

基金项目:

国家自然科学基金资助项目(51478120,51108087)。

详细信息

作者简介:
赵秋,工学博士,教授,主要从事钢桥与组合结构桥梁研究,zhaoqiu@fzu.edu.cn。

通讯作者:
陈鹏,硕士研究生,主要从事钢结构桥梁方向研究,464902931@qq.com。

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出版历程
- 收稿日期: 2022-02-09
- 网络出版日期: 2024-11-06

A Calculation Method of Overall Stability for Flat Plate Stiffened Panels Under Compression

1. School of Civil Engineering, Fuzhou University, Fuzhou 350108, China;
2. Fujian Highway Bridge Construction & Development Co., Ltd., Xiamen 361000, China;
3. Fujian Highway Engineering Key Laboratory, Xiamen 361000, China

摘要

摘要: 板肋加劲板是钢结构桥梁中钢箱、钢塔以及钢拱等结构的基本组成构件,为研究板肋加劲板的整体稳定性能,采用经试验验证的有限元模型进行整体稳定分析,考虑不同本构关系、初始几何缺陷以及焊接残余应力对整体稳定承载力的影响,批量计算得到整体稳定系数拟合曲线。研究发现:采用理想弹塑性本构模型可以较安全地描述板肋加劲板受压整体稳定性能;增大初弯曲与偏心距幅值会削弱板肋加劲板的整体稳定承载力,当缺陷幅值为计算长度的1/1 000时,板肋侧初弯曲的模型承载力相对较低,但被加劲板侧初弯曲的模型对缺陷更为敏感;增大焊接残余压应力峰值会降低板肋加劲板整体轴向刚度以及轴向极限平均应力,在所研究的相对长细比范围内,拟合的计算公式曲线低于试验值与等强钢U肋柱子曲线,整体接近JTG D64—2015《公路钢结构桥梁设计规范》中b类柱子曲线,高于日本规范、美国规范对应的柱子曲线,可以偏安全地用于板肋加劲板整体稳定计算。
- 桥梁工程 /
- 板肋加劲板 /
- 整体稳定 /
- 数值模拟 /
- 稳定承载力 /
- 计算方法
Abstract: Flat panel stiffened plates are the basic components of steel box, steel tower and steel arch in steel structure bridges. In order to study the overall stability of flat panel stiffened plates, the finite element models verified by experiments were established for overall stability analysis. The effects of different constitutive relations, initial geometric defects and welding residual stresses on the overall stability bearing capacity were considered. It was found that: the ideal elastic-plastic constitutive model could be used to safely analyze the overall stability of flat plate stiffened panel under compression. Increasing the initial bending amplitude and loading eccentricity of the model would weaken the plates’ overall stability capacity.When the defect amplitude was 1/1 000 of the calculated length, the bearing capacity of model initially bent on the side of the plate rib was relatively low, but the model initially bent on the side of the stiffened plate was more sensitive to the defect; increasing the peak value of welding residual compressive stress would reduce the overall axial stiffness and ultimate average stress of flat plate stiffened panels.Within the range of the relative slenderness ratio studied, the fitted calculation formula curve was lower than the test value and the curve of equal strength steel u-rib column, and was generally close to the class B column curve in the Specifications for Design of Highway Steel Bridge (JTG D64—2015), higher than the column curve corresponding to the Japanese and American codes, which could be safely used for the overall stability calculation of flat panel stiffened plates.
- bridge engineering /
- flat plate stiffened panel /
- overall stability /
- numerical simulation /
- stability capacity /
- calculation method

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参考文献(18)

[1]	BAI L H, SHEN R L, WANG L, et al. Experimental and numerical study on buckling behavior of a rigidly stiffened plate with tee ribs[J]. International Journal of Steel Structures, 2018,18(2018): 582-595.
[2]	DING H P, SHEN Q H, DU S D, et al. Structural condition assessment of the herringbone middle pylon of the Taizhou Bridge using SHM strain data[J]. Journal of Sensors,2017,2017(1):1-10.
[3]	MA B, LIN Y P, ZHANG J J. Decade review: bridge type selection and challenges of Lupu Bridge[J]. Structural Engineering International, 2013, 23(3):317-322.
[4]	赵秋,翟战胜,陈宝春. 混合强度U形肋加劲钢板受压稳定试验研究[J].建筑结构学报,2016,37(7):54-63.
[5]	秦凤江,狄谨,周绪红,等. 钢箱梁U型肋加劲板受压稳定极限承载力影响因素分析[J].长安大学学报(自然科学版),2017,37(1):58-66.
[6]	赵秋,张骏超,翟战胜,等. U肋加劲板受压力学性能分析[J].铁道建筑,2019,59(5):15-21.
[7]	赵秋,张骏超,林楚,等. 混合钢U肋加劲板受压整体稳定承载力数值模拟与计算方法[J].建筑科学与工程学报,2020,37(3):45-54.
[8]	SADAMOTO S, TANAKA S, TANIGUCHI K, et al. Buckling analysis of stiffened plate structures by an improved meshfree flat shell formulation[J]. Thin-Walled Structures, 2017, 117: 303-313.
[9]	SHIN D, DAT B, KIM K. Compressive strength of HPS box girder flanges stiffened with open ribs[J]. Journal of Constructional Steel Research, 2014, 95(1): 230-241.
[10]	甘采华,王华,刘世建.开口加劲板件的稳定极限承载力研究[J].公路工程,2021,46(2):234-240.
[11]	赵秋,高璞.受压加劲板稳定承载力计算方法比较[J].福州大学学报(自然科学版),2014,42(1):123-127.
[12]	赵秋, 翟战胜.开口肋加劲板屈曲模态与临界屈曲应力分析[J]. 建筑科学与工程学报, 2016, 33(2):48-55.
[13]	LI C F, REN H L, ZHU Z Y, et al. Numerical investigation on the ultimate strength of aluminium integrally stiffened panels subjected to uniaxial compressive load[J]. Thin-Walled Structures, 2018, 127: 221-234.
[14]	陈建桂.开口肋加劲板焊接残余应力分布与简化计算方法研究[D].福州:福州大学,2018.
[15]	中华人民共和国住房和城乡建设部. 钢结构设计标准:GB 50017—2017[S]. 北京: 中国建筑工业出版社, 2018.
[16]	中华人民共和国交通运输部. 公路钢结构桥梁设计规范:JTG D64—2015[S]. 北京: 人民交通出版社, 2015.
[17]	日本道路协会. 道路桥示方书·同解说(Ⅱ钢桥篇)[S]. 东京:丸善株式会社,2002.
[18]	American Association of State Highway and Transportation Officials(AASHTO). AASHTO LRFD bridge design specifications[S].Washington DC: AASHTO, 2007.