| 预应力砼空心板桥加宽改造关键技术研究 |
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| 引用本文： | 韩功学.预应力砼空心板桥加宽改造关键技术研究[J].交通标准化,2011(24):108-111. |
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| 作者姓名： | 韩功学 |
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| 作者单位： | 郑州市交通规划勘察设计研究院,河南郑州,450052 |
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| 摘 要： | 基于悬臂板假定和无剪切刚性板假定,建立两种空心板桥加宽刚度渐变理论计算模型,并分别根据这两种模型计算得出了新旧桥板之间刚度渐变初步方案。通过跨中位移和横向分布影响系数分析来评价加固效果：综合考虑跨中和1/4跨,悬臂板假定下采用槽钢进行刚度渐变的过渡空心板位移变化有渐变趋势,说明这种假定与实际情况相近,可以作为理论假定的依据,可以采用悬臂板假定进行计算。
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| 关 键 词： | 空心板桥 加宽 刚度 关键技术 |
Key Technology of Widening Reconstruction of Prestressed Concrete Hollow Slab Bridge |
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| HAN Gong-xue.Key Technology of Widening Reconstruction of Prestressed Concrete Hollow Slab Bridge[J].Communications Standardization,2011(24):108-111. |
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| Authors: | HAN Gong-xue |
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| Institution: | HAN Gong-xue(Zhengzhou Transport Planning Survey and Design Academe,Zhengzhou 450052,China) |
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| Abstract: | Based on the supposition of cantilever slab and shear-free rigid plate,two calculation models of gradual change of the stiffness of hollow slab bridge widening are established,and then a preliminary scheme of gradual change of the stiffness between the old and new bridges are obtained according to the models.Through analyzing the mid-span displacement and influence coefficient of transverse distribution,the effect of reinforcement is evaluated: considering mid span and 1/4 span synthetically,the displacemen... |
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| Keywords: | hollow slab bridge widen stiffness key technology |
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