Study on Model Experiment of Prestressed Concrete Skewed Box Girder with Transversely Segmental Construction |
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引用本文: | 陈朝慰,彭大文.Study on Model Experiment of Prestressed Concrete Skewed Box Girder with Transversely Segmental Construction[J].公路交通科技,2010,4(2):44-49. |
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作者姓名: | 陈朝慰 彭大文 |
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作者单位: | 1Fujian Research Institute of Communications Science and Technology ,FuzhouFujian350004,China;
2School of Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai200235,China |
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基金项目: | Supported by the introduced talents starting fund of Fujian Research Institute of communications Science and Technology (No YJ200801) and introduced professor fund project of Shanghai Institute of Technology(No YJ2004-01) |
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摘 要: | he prestressed concrete skewed box girder with transversely segmental construction was brought out on the basis of the need in the engineering,both model experiments and FE analysis of the presented construction and the beam box with integral construction were carried out With the analysis of the obtained data by mathematical statistics,comparison of table and graph,and the corresponding FE analysis,the difference of mechanical performances of both constructions was analyzed under various experimental loading cases The results
show that (1) the deflection of the presented construction is about 53% larger than that of the beam box with integral construction,the longitudinal strain is 135% larger than that of the latter,and the longitudinal strain of the cast concrete is 59% as large as that of the same area at the beam box with integral construction before concrete cracking; (2) there exists stress redistribution in the cross-section of presented construction,which can restrain the tensional distortion of the wet?joint,and the value of the stress cannot be computed by the current FE program
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关 键 词: | bridge engineering mechanical performance model experiment FE PC transverse segmental construction skew box girder |
收稿时间: | 2008-11-21 |
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