| 体外预应力加固钢筋混凝土空心板的试验研究 |
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| 引用本文： | 赵亚飞,周建庭,宁金成,田金昌.体外预应力加固钢筋混凝土空心板的试验研究[J].重庆交通大学学报(自然科学版),2012(1):22-24,28. |
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| 作者姓名： | 赵亚飞 周建庭 宁金成 田金昌 |
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| 作者单位： | 广西交通科学研究院;重庆交通大学;河南交通职业技术学院;西藏自治区交通厅 |
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| 基金项目： | 西部交通建设科技项目(200831895076);重庆市重大科技攻关项目(CSTC,2008BA6038) |
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| 摘 要： | 体外预应力加固技术施工方便、经济可靠,能有效地提高现有桥梁承载能力、改善结构性能,因而在既有加固梁桥中应用较多,但应用到钢筋混凝土空心板桥中还很少,因此其适用性还有待研究.在完成2片1∶1足尺空心板的制作、加固前后测试的基础上,对比分析了普通钢筋混凝土空心板用纵向体外预应力技术加固增强前后的挠度、应变、裂缝开展情况和极...
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| 关 键 词： | 体外预应力 空心板 加固 承载力 |
Research on External Prestressing to Strengthen Reinforced Concrete Void Slabs |
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| Zhao Yafei,Zhou Jianting,Ning Jincheng,Tian Jinchang.Research on External Prestressing to Strengthen Reinforced Concrete Void Slabs[J].Journal of Chongqing Jiaotong University,2012(1):22-24,28. |
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| Authors: | Zhao Yafei Zhou Jianting Ning Jincheng Tian Jinchang |
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| Institution: | 1.Transportation Research Institute of Guangxi,Nanning 530007,Guangxi,China; 2.Chongqing Jiaotong University,Chongqing 400074,China; 3.Henan Communication Vocational Technology College,Zhengzhou 450005,Henan,China; 4.Tibet Autonomy Communication Department,Lhasa 820000,Tibet,China) |
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| Abstract: | External prestressing technique is widely used in beam bridges reinforcement for its construction convenience,economy and reliance.However,this technique has not been used in slab bridges.So it is important to investigate its applicability in slab bridges.The deflection,strain,cracking and ultimate bearing capacity of common reinforced concrete(RC) void slabs before and after the slabs strengthened by external prestressing are analyzed.The results show that the echnique can effectively improve the bearing capacity of common RC void slabs and can be widely used in engineering projects. |
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| Keywords: | external prestressing void slab strengthen bearing capacity |
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