[1]周广盼,李爱群,李建慧,等.车载作用下超宽混凝土箱梁自锚式悬索桥静力特性[J].东南大学学报(自然科学版),2016,46(3):578-583.[doi:10.3969/j.issn.1001-0505.2016.03.020]
 Zhou Guangpan,Li Aiqun,Li Jianhui,et al.Static characteristics of self-anchored suspension bridge with super wide concrete box girder under vehicle loads[J].Journal of Southeast University (Natural Science Edition),2016,46(3):578-583.[doi:10.3969/j.issn.1001-0505.2016.03.020]
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车载作用下超宽混凝土箱梁自锚式悬索桥静力特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第3期
页码:
578-583
栏目:
交通运输工程
出版日期:
2016-05-20

文章信息/Info

Title:
Static characteristics of self-anchored suspension bridge with super wide concrete box girder under vehicle loads
作者:
周广盼1李爱群12李建慧3端茂军1
1东南大学土木工程学院, 南京 210096; 2北京建筑大学, 北京 100044; 3南京林业大学土木工程学院, 南京 210037
Author(s):
Zhou Guangpan1 Li Aiqun12 Li Jianhui3 Duan Maojun1
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2Beijing University of Civil Engineering and Architecture, Beijing 100044, China
3School of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
关键词:
自锚式悬索桥 超宽混凝土加劲梁 有限元法 静力特性 荷载试验
Keywords:
self-anchored suspension bridge super wide concrete stiffening girder finite element method static characteristics load test
分类号:
U448.25;U445
DOI:
10.3969/j.issn.1001-0505.2016.03.020
摘要:
为了探讨超宽混凝土箱梁自锚式悬索桥在车载作用下的受力状态,通过实桥荷载试验和ANSYS有限元分析,研究了结构整体静力特性以及超宽加劲梁的纵向应力水平及其分布.试验结果表明:在相当于设计汽车荷载水平的试验荷载下,主塔顶横桥向位移较纵桥向明显;受剪力滞效应、横坡及车轮局部效应的影响,超宽加劲梁受力空间效应明显,对称车载作用下加劲梁挠度沿横桥向呈V形变化,最大可达35 mm,偏心车载作用下扭转变形明显;加劲梁顶、底板纵向应力沿横桥向呈不均匀分布,最大纵向应力增量位于顶、底板与内腹板交接处,对称车载作用下顶板纵向应力沿横桥向呈M形变化;偏心车载作用下缆索系统受超宽加劲梁的空间效应影响,两侧索面受力的不均匀性较为明显.
Abstract:
To investigate the mechanic properties of the self-anchored suspension bridge with the super wide concrete girder under the vehicle loads, the global static characteristics as well as the longitudinal stress levels and the transverse distributions of the super wide girder were analyzed by the bridge load test and ANSYS finite element analysis. The results show that the transverse displacements of the towers are more obvious than the longitudinal displacements under the test load equivalent to the designed vehicle load level. Subjected to the shear lag effect, the cross slope and local effect of the wheels, the spatial effect of the super wide girder is obvious. The deflection of the girder along the transverse direction exhibits V-shaped change under the symmetrical vehicle loads, the maximum of which is 35 mm, and the torsion deformation under the biased vehicle loads is also obvious. The longitudinal stresses of the top and the bottom plates of the girder distribute unevenly along the transverse direction of the girder, and the maximum of the longitudinal stress increments are located in the junctions of the inner web and the top and bottom plates. The longitudinal stress increment of the top plate shows M-shaped change under the symmetrical vehicle loads. The unevenness of the force state between the two cable surfaces is obvious under the biased vehicle loads due to the spatial effect of the super wide girder.

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相似文献/References:

[1]夏志远,李爱群,李建慧,等.超宽加劲梁自锚式悬索桥动力特性敏感性分析[J].东南大学学报(自然科学版),2016,46(2):360.[doi:10.3969/j.issn.1001-0505.2016.02.021]
 Xia Zhiyuan,Li Aiqun,Li Jianhui,et al.Sensitivity analysis on dynamic characteristics of self-anchored suspension bridge with super-wide girder[J].Journal of Southeast University (Natural Science Edition),2016,46(3):360.[doi:10.3969/j.issn.1001-0505.2016.02.021]

备注/Memo

备注/Memo:
收稿日期: 2015-08-31.
作者简介: 周广盼(1989—),男,博士生;李爱群(联系人),男,博士,教授,博士生导师,aiqunli@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51278104)、江苏省交通运输科学研究计划资助项目(2011Y03).
引用本文: 周广盼,李爱群,李建慧,等.车载作用下超宽混凝土箱梁自锚式悬索桥静力特性[J].东南大学学报(自然科学版),2016,46(3):578-583. DOI:10.3969/j.issn.1001-0505.2016.03.020.
更新日期/Last Update: 2016-05-20