| 预应力钢筋混凝土T梁上拱度计算 |
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| 引用本文： | 龚先兵,向秋燕,宁向向. 预应力钢筋混凝土T梁上拱度计算[J]. 铁道科学与工程学报, 2011, 8(1): 107-112 |
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| 作者姓名： | 龚先兵 向秋燕 宁向向 |
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| 作者单位： | 1. 湖南大学,土木工程学院,湖南,长沙,410082;湖南省高速公路管理局,湖南,长沙,410016
2. 湖南省高速公路管理局,湖南,长沙,410016 |
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| 基金项目： | 湖南交通科技创新项目(200745) |
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| 摘 要： | 考虑预应力、恒载、混凝土收缩和徐变等因素,提出一种物理意义明确而计算精度较高的预应力T梁上拱度计算方法.计算结果与实测数据对比分析表明:计算方法能够满足工程精度要求,计算结果可为预应力混凝土T梁预拱度设计施工提供依据.
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| 关 键 词： | 预应力混凝土T梁 上拱度 计算方法 徐变 |
A calculation method of prestressed concrete T-beam camber |
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| GONG Xian-bing , Xiang Qiu-yan , Ning Xiang-xiang. A calculation method of prestressed concrete T-beam camber[J]. Journal of Railway Science and Engineering, 2011, 8(1): 107-112 |
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| Authors: | GONG Xian-bing Xiang Qiu-yan Ning Xiang-xiang |
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| Affiliation: | GONG Xian-bing1,2,Xiang Qiu-yan2,Ning Xiang-xiang2(1.Civil Engineering College,Hunan University,Changsha 410082,China,2.Expressway Administration Bureau of Hunan Province,Changsha 410016,China) |
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| Abstract: | Considering influences of prestress,concrete creep and shrinkages on prestressed concrete T-beam camber,a theoretical calculation method with high-precise was proposed in the paper.Compared with experimental data,the calculation method satisfied the engineering accuracy request,the results will provide reference for the designs and constructions of pre-camber of prestressed concrete beams. |
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| Keywords: | restressed benefit concrete T-beams camber calculation method creep |
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