[1]王文炜,何初生,冯竹林,等.钢-混凝土组合梁混凝土收缩徐变的增量微分方法[J].东南大学学报(自然科学版),2010,40(6):1252-1256.[doi:10.3969/j.issn.1001-0505.2010.06.024]
 Wang Wenwei,He Chusheng,Feng Zhulin,et al.Incremental differential modeling of creep and shrinkage of steel-concrete composite beams[J].Journal of Southeast University (Natural Science Edition),2010,40(6):1252-1256.[doi:10.3969/j.issn.1001-0505.2010.06.024]
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钢-混凝土组合梁混凝土收缩徐变的增量微分方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第6期
页码:
1252-1256
栏目:
土木工程
出版日期:
2010-11-20

文章信息/Info

Title:
Incremental differential modeling of creep and shrinkage of steel-concrete composite beams
作者:
王文炜1 何初生1 冯竹林1 万水1 翁昌年2
1 东南大学交通学院,南京 210096; 2 辽宁大通公路工程有限公司,沈阳 110179
Author(s):
Wang Wenwei1 He Chusheng1 Feng Zhulin1 Wan Shui1 Weng Changnian2
1 School of Transportation, Southeast University, Nanjing 210096, China
2 Datong Highway Engineering Co., Ltd., Shenyang 110179, China
关键词:
钢-混凝土组合梁 混凝土收缩 徐变 增量微分法
Keywords:
steel-concrete composite beam concrete shrinkage creep incremental differential method
分类号:
TU398
DOI:
10.3969/j.issn.1001-0505.2010.06.024
摘要:
为深入了解混凝土收缩徐变对钢-混凝土组合梁力学性能的影响,采用随时间变化的换算弹性模量法建立了钢-混凝土组合梁混凝土收缩徐变的增量微分模型,得到了组合梁内力、挠度和钢-混凝土界面滑移的微分控制方程.根据边界条件,给出了内力、变形及钢-混凝土界面滑移等各项力学性能指标的闭合解.为验证增量微分方法的正确性,对试验梁和算例梁进行了跨中挠度-时间曲线、沿梁高应变分布及梁端钢-混凝土界面滑移的计算分析.计算结果表明,所建立的增量微分法与试验值和其他计算方法的计算结果吻合较好,可以有效地预测钢-混凝土组合梁的长期力学性能.
Abstract:
In order to investigate the effect of concrete creep and shrinkage on the mechanical behavior of steel-concrete composite beams, a theoretical model, using the conversion elastic modulus method, of the long term behavior of steel-concrete composite beams is presented in this paper. The differential equations of the incremental deflections and internal forces were deduced and the general closed-form solutions for simply-supported composite beams were obtained. The calculated results of the proposed model were compared with the experimental results of steel-concrete composite beams reported and the calculated results of worked example beam in the literature. It is shown that the calculation results by the proposed method are in close agreement with the experimental results and the proposed model is capable of predicting the mechanical behavior of the steel-concrete composite beams with an acceptable degree of accuracy.

参考文献/References:

[1] Newmark N W,Seiss C P,Viest I M.Tests and analysis of composite beams with incomplete interaction [J].Proceeding of the Society of Experimental Stress Analysis,1951,9(1):75-92.
[2] 聂建国,余志武.钢-混凝土组合梁在我国的研究与应用[J].土木工程学报,1999,32(2):3-8.
  Nie Jianguo,Yu Zhiwu.Research and practice of composite steel-concrete beams in China [J].China Civil Engineering Journal,1999,32(2):3-8.(in Chinese)
[3] 朱聘儒.钢-混凝土组合梁设计原理[M].2版.北京:中国建筑工业出版社,2006:76-94.
[4] Oehlers D J,Bradford M.Composite steel and concrete structural members[M].New York:Pergamon,1995.
[5] Jasim N A.Deflections of partially composite beams with linear connector density[J].Journal of Constructional Steel Research,1999,49(3):241-254.
[6] Rudolf S,Chow T L,Tze C L,et al.Partial interaction stresses in continuous composite beams under serviceability loads [J].Journal of Constructional Steel Research,2004,60(3):1525-1543.
[7] Jurkiewiez B,Buzon S,Sieffert J G.Incremental viscoelastic analysis of composite beams with partial interaction [J].Computers & Structures,2005,83(21/22):1780-1791.
[8] Liugino D,Graziano L,Angelo M T.Time-dependent analysis of prestressed composite beams [J].Journal of Structural Engineering,1995,121(4):621-633.
[9] Claudio A,Massimo F.Simplified approach to evaluate creep and shrinkage effect in steel-concrete composite beams [J].Journal of Structural Engineering,1997,123(9):1153-1162.
[10] Hyo-Gyoung K,Young-Jae S.Long-term behavior of composite grider bridges [J].Computers & Structures,2000,74(5):583-599.
[11] Faella C,Martinelli E,Nigro E.Steel and concrete composite beams with flexible shear connection:“exact” analytical expression of the stiffness matrix and application [J].Computers & Structures,2002,80(11):1001-1009.
[12] 王文炜,翁昌年,万水,等.考虑滑移的钢-混凝土组合梁有限单元法[J].东南大学学报:自然科学版,2008,38(3):505-510.
  Wang Wenwei,Weng Changnian,Wan Shui,et al.FE method of steel and concrete composite beams considering slip between steel girder and concrete plate [J].Journal of Southeast University:Natural Science Edition,2008,38(3):505-510.(in Chinese)
[13] Wendel M S,Richard E M.Nonlinear FE analysis of steel-concrete composite structures [J].Journal of Structural Engineering,2000,126(6):662-674.
[14] Girhammar U A,Gopu V K A.Composite beam-columns with interlayer slip-exact analysis [J].Journal of Structural Engineering,1993,119(4):1265-1282.
[15] Bradford M A,Gilbert R I.Time-dependent behavior of simply-supported steel-concrete composite beams [J].Magazine of Concrete Research,1991,43(157):265-274.
[16] CEB-FIP.Manual on structural effects of time-dependent behavior of concrete[S].Lausanne,Switzerland:Bulletin Information,1993.

备注/Memo

备注/Memo:
作者简介: 王文炜(1971—),男,博士,副教授,wangwenwei@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51078079,50878048)、建设部科技开发资助项目(2008-K4-16)、辽宁省交通厅重点资助项目(0514).
引文格式: 王文炜,何初生,冯竹林,等.钢-混凝土组合梁混凝土收缩徐变的增量微分方法[J].东南大学学报:自然科学版,2010,40(6):1252-1256. [doi:10.3969/j.issn.1001-0505.2010.06.024]
更新日期/Last Update: 2010-11-20