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| 客运专线32m整孔简支箱梁预应力管道摩阻试验研究 | |
| 引用本文： | 曹国平,李学斌,王先龙,侯建军,陈恩忠.客运专线32m整孔简支箱梁预应力管道摩阻试验研究[J].铁道技术监督,2012,40(2):21-26. |
| 作者姓名： | 曹国平 李学斌 王先龙 侯建军 陈恩忠 |
| 作者单位： | 1. 中铁十七局集团第四工程有限公司,重庆,401121 2. 中国铁道科学研究院铁道建筑研究所,北京,100081 3. 南广铁路有限责任公司,广西南宁,530022 4. 中铁工程设计咨询集团有限公司,北京,100055 |
| 摘 要： | 我国新建铁路中大量采用预应力混凝土简支箱梁结构。在预应力梁施工过程中,是否能够准确施加预应力,将直接影响到梁体的抗裂性能和后期徐变上拱的控制。因此,施工时应严格控制预应力管道的定位和成孔工艺。介绍预应力管道摩阻的试验原理和方法,分析客运专线32m简支箱梁的管道摩阻测试结果,结论可为铁路简支箱梁预应力管道的施工控制提供参考。 |
| 关 键 词： | 预应力混凝土梁 箱形梁 简支梁 管道摩阻试验 预应力控制 |
Experimental Study on the Tendon Duct Friction Loss of 32m Span Prestressed Concrete Simply Supported Box Girder Used on PDL |
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| Cao Guoping,Li Xuebin,Wang Xianlong,Hou Jianjun,Chen Enzhong.Experimental Study on the Tendon Duct Friction Loss of 32m Span Prestressed Concrete Simply Supported Box Girder Used on PDL[J].Railway Quality Control,2012,40(2):21-26. | |
| Authors: | Cao Guoping Li Xuebin Wang Xianlong Hou Jianjun Chen Enzhong |
| Institution: | Cao Guoping,Li Xuebin,Wang Xianlong,Hou Jianjun,Chen Enzhong |
| Abstract: | Prestressed concrete simply supported box girders are used extensively in newly-built railways in China.It is very important to apply the prestressing force exactly on the prestressed concrete beams in construction stage,which directly affects the crack resistance of beams and the control of the creep deformation.Therefore,the location and pore-forming process during the construction of tendon ducts should be strictly controlled.The test principle and methodology are introduced in the paper,Results of tendon duck friction loss are analyzed about simply supported beams of 32m span.The conclusions could be a reference to the construction of railway prestressed concrete simply supported box girders. |
| Keywords: | Prestressed Concrete Girder Box Girder Simply Supported Beam Test of Tendon Duct Friction Loss Prestressed Force Control |
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