| 大跨度PC桥竖向预应力设计探讨 |
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| 引用本文： | 张开银,刘利军,廖原.大跨度PC桥竖向预应力设计探讨[J].公路交通科技,2004,21(8):45-48. |
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| 作者姓名： | 张开银 刘利军 廖原 |
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| 作者单位： | 1. 华中科技大学,湖北,武汉,430074
2. 武汉理工大学,湖北,武汉,430063 |
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| 基金项目： | 湖北省自然科学基金(2001ABB084)，湖北省交通科技项目资助(鄂交科教[2002]466号) |
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| 摘 要： | 介绍了一种在复杂应力状态下的混凝土强度双剪三参数准则模式,结合预应力混凝土梁斜截面抗剪强度研究,分析预应力混凝土在双轴应力状态下强度问题,提出考虑混凝土强度提高的竖向预应力计算公式。
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| 关 键 词： | 混凝土强度准则 预应力混凝土梁 双轴应力 |
| 文章编号： | 1002-0268(2004)08-0045-04 |
| 修稿时间： | 2003年6月20日 |
Research on the Vertical Prestress Design of Long-span PC Continue Beam Bridge |
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| ZHANG Kai-yin,LIU Li-jun,LIAO Yuan.Research on the Vertical Prestress Design of Long-span PC Continue Beam Bridge[J].Journal of Highway and Transportation Research and Development,2004,21(8):45-48. |
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| Authors: | ZHANG Kai-yin LIU Li-jun LIAO Yuan |
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| Institution: | ZHANG Kai-yin~1,LIU Li-jun~2,LIAO Yuan~2 |
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| Abstract: | This paper introduces a concrete strength criterion in the state of complicated stress, namely a pattern of double-shear strength criterion with three parameters. Combining the study of the bevel sections anti-shear strength of pre-stressed concrete beam, the problems how to enhance the strength of the concrete in the state of double-axis stress is analyzed, and brings forward the vertical pre-stressed calculation formula in consideration of enhancing concrete strength. |
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| Keywords: | Concrete strength criterion Prestressed concrete beam Double-axis stress |
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