| 工程设计中体外预应力筋极限应力取值的建议 |
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| 引用本文： | 刘士林,杜进生. 工程设计中体外预应力筋极限应力取值的建议[J]. 预应力技术, 2006, 10(3): 22-25 |
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| 作者姓名： | 刘士林 杜进生 |
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| 作者单位： | [1]中交第一公路勘察设计研究院,西安710075 [2]北京交通大学,北京100044 |
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| 摘 要： | 本文首先对国内外有代表性的体外预应力筋极限应力计算方法进行了评述。在此基础上，建议了新建及加固桥梁工程设计中，体外预应力筋极限应力计算公式。该公式简单、直观，既适用于简支梁，亦适用于连续梁。由于公式中显含预应力筋弹性模量，所建议公式也可用于非钢材材质的体外预应力结构。
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| 关 键 词： | 体外预应力筋 极限应力 混凝土 桥梁 |
Suggestion on the Ultimate Stress Value of Externally Prestressed Steel Bars in Engineering Design |
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| Liu Shilin,Du Jinsheng. Suggestion on the Ultimate Stress Value of Externally Prestressed Steel Bars in Engineering Design[J]. Prestress Technology, 2006, 10(3): 22-25 |
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| Authors: | Liu Shilin Du Jinsheng |
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| Affiliation: | China Communications First Highway Survey and Design Institute; Beijing Jiaotong University |
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| Abstract: | In this paper, representative methods for calculating the ultimate stress of extracorporeal prestressing tendons at home and abroad are firstly reviewed. On this basis, a formula for calculating the ultimate stress of extracorporeal prestressing tendons in the design of new and strengthened bridges is proposed. The formula is simple, intuitive, and applicable to both simply supported and continuous beams. Since the modulus of elasticity of prestressing tendons is included in the formula, the proposed formula can also be used for the extracorporeal prestressing structures made of non-steel materials. |
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| Keywords: | Extracorporeal prestressing tendons Ultimate stress Concrete Bridges |
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