[1]王毅,叶见曙.温度梯度对混凝土曲线箱梁影响的计算方法[J].东南大学学报(自然科学版),2005,35(6):924-929.[doi:10.3969/j.issn.1001-0505.2005.06.021]
 Wang Yi,Ye Jianshu.Computing method of effect of thermal gradient on concrete curved box-girders[J].Journal of Southeast University (Natural Science Edition),2005,35(6):924-929.[doi:10.3969/j.issn.1001-0505.2005.06.021]
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温度梯度对混凝土曲线箱梁影响的计算方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
35
期数:
2005年第6期
页码:
924-929
栏目:
交通运输工程
出版日期:
2005-11-20

文章信息/Info

Title:
Computing method of effect of thermal gradient on concrete curved box-girders
作者:
王毅 叶见曙
东南大学交通学院, 南京 210096
Author(s):
Wang Yi Ye Jianshu
College of Transportation, Southeast University, Nanjing 210096, China
关键词:
桥梁工程 混凝土 曲线梁 箱梁 温度梯度
Keywords:
bridge engineering concrete curved girder box-girder thermal gradient
分类号:
U441.5
DOI:
10.3969/j.issn.1001-0505.2005.06.021
摘要:
针对计算温度荷载对弯箱梁桥影响的方法很难用于弯箱梁桥的初步设计和估算的问题,采用单纯扭转理论研究了弯箱梁微段的几何关系,推导了曲线梁在温度梯度作用下的基本微分方程.将一次扭转超静定简支弯箱梁作为基本结构,通过求解微分方程的解析解,提出了一种较为简便的计算温度梯度对曲线梁影响的方法.研究表明,抗弯刚度和抗扭刚度之比对由于温度梯度而产生的反扭矩影响较大,对支座反力的影响较小.用该方法计算了二等跨、三等跨和四等跨一联的连续弯箱梁桥的支座反力和反扭矩,其与空间有限元程序计算结果的误差小于5%,可以满足工程精度的要求.
Abstract:
Since the computing method for effect of thermal gradient on concrete curved box-girders is hard to be applied to preliminary design and structure estimation, geometric relation of a differential curved box-girder segment is studied by using the pure torsion theory and the fundamental differential equation of concrete curved box-girders with thermal gradient action is deduced. Through solving the differential equation, a convenient method for computing the effect of thermal gradient on concrete curved box-girders is put forward by using an individual span with one degree of torsion indeterminacy as simple structure. The research shows that the ratio between bending rigidity and torsional rigidity of box-girder has great effect on counter-torque of supports, whereas it has little effect on counter-force. The supports counter-torque and counter-force of concrete curved box-girders with 2, 3 and 4 spans arranged in one continuous unit were calculated. Through the comparison with the results of FEA(finite element analysis), the error of calculated results are less than 5%. It proves that the precision of this method meets the engineering calculation requirement.

参考文献/References:

[1] 孙广华.曲线梁桥计算[M].北京:人民交通出版社,1995.1-19.
[2] 丁汉山,刘华,胡丰玲,等.高架桥弯梁抗扭稳定性分析[J].交通运输工程学报,2004,4(3):44-48.
  Ding Hanshan,Liu Hua,Hu Fengling,et al.Overturning stability analysis of curved box girder bridge[J]. Journal of Traffic and Transportation Engineering, 2004,4(3):44-48.(in Chinese)
[3] 刘开元.混凝土曲线箱型桥的温度效应[D].北京:北方交通大学,2002.
[4] 陈宏广,王平,孙宗光,等.温度荷载下曲线连续梁桥的受力分析[J].沈阳建筑工程学院学报(自然科学版),2003,19(4):268-271.
  Chen Hongguang,Wang Ping,Sun Zhongguang,et al.Static analysis for a curved continuous bridge under temperature loading[J].Journal of Shenyang Arch and Civ Eng Univ(Natural Science Edition),2003,19(4):268-271.(in Chinese)
[5] Sennah K M,Kennedy J B.Literature review in analysis of box-girder bridges[J]. Journal of Bridge Engineering,2002,7(2):134-143.
[6] 姚玲森.曲线梁[M].北京:人民交通出版社,1989.1-301.
[7] 邵容光,夏淦.混凝土弯梁桥[M].北京:人民交通出版社,1994.71-84.
[8] Luo Q Z,Li Q S.Shear lag of thin-walled curved box girder bridges[J].Journal of Engineering Mechanics,2000,126(10):1111-1114.
[9] Okeil A M,El-Tawil S.Warping stresses in curved box girder bridges:case study[J].Journal of Bridge Engineering,2002,9(5):487-496.
[10] 范立础.桥梁工程(上册)[M].北京:人民交通出版社,2001.295-300.

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备注/Memo

备注/Memo:
基金项目: 交通部西部交通建设科技资助项目(2003-318).
作者简介: 王毅(1979—),男,博士生; 叶见曙(联系人),男,教授,博士生导师, yejianshu@seu.edu.cn.
更新日期/Last Update: 2005-11-20