| 大跨度预应力混凝土箱梁桥腹板抗裂敏感性与配索优化分析 |
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| 引用本文： | 赵启林,丁勇,翟可为. 大跨度预应力混凝土箱梁桥腹板抗裂敏感性与配索优化分析[J]. 建筑科学与工程学报, 2011, 28(3): 29-33 |
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| 作者姓名： | 赵启林 丁勇 翟可为 |
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| 作者单位： | 中国人民解放军理工大学工程兵工程学院,江苏南京,210007 |
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| 基金项目： | 国家高技术研究发展计划(“八六三”计划)项目(2007AA11Z120) |
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| 摘 要： | 针对各国大量悬浇预应力混凝土箱梁桥出现腹板斜裂缝,且腹板单纯配置竖向索的桥梁比腹板设置下弯索的开裂更为严重的现象,采用敏感性分析方法对单纯采用竖向索和单纯采用下弯索的腹板抗裂性进行了对比分析；针对腹板不仅存在剪应力而且存在竖向拉应力的客观事实,证明了下弯索无法克服腹板竖向拉应力导致的主拉应力,指出腹板进行竖向索与下弯索...
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| 关 键 词： | 斜裂缝 大跨度 预应力混凝土箱梁桥 腹板 敏感性 |
Analysis of Web Anti-crack Sensitivity and Tendon-collocating Optimization for Long-span Prestressed Concrete Box-girder Bridge |
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| ZHAO Qi-lin,DING Yong,ZHAI Ke-wei. Analysis of Web Anti-crack Sensitivity and Tendon-collocating Optimization for Long-span Prestressed Concrete Box-girder Bridge[J]. Journal of Architecture and Civil Engineering, 2011, 28(3): 29-33 |
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| Authors: | ZHAO Qi-lin DING Yong ZHAI Ke-wei |
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| Affiliation: | ZHAO Qi-lin,DING Yong,ZHAI Ke-wei(School of Engineering Corps,PLA University of Science and Technology,Nanjing 210007,Jiangsu,China) |
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| Abstract: | The inclined cracks in webs of prestressed concrete box-girder bridge with suspended construction took place frequently,and it was more common in these with pure vertical tendons than those with bending ones.Comparison of web anti-crack property was conducted between them with the method of sensitivity analysis.Bending tendons were proved not to overcome the principal stress due to vertical tensile stress with the fact that vertical tensile stress exists as well as shear in webs.The need of mixed configurat... |
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| Keywords: | inclined crack long-span prestressed concrete box-girder bridge web sensitivity |
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