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| 基于预应力度概念的预应力混凝土结构性能的研究 |
| Study of Prestressed Concrete Structural Capacity Based on Conception of Degree of Prestress |
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| DOI：10.3969/j.issn.1671-5322.2007.04.021 |
| 中文关键词: 预应力度 预应力混凝土 基于预应力度概念 |
| 英文关键词: degree of prestress prestressed concrete prestress-degree-based concept |
| 基金项目:江苏省高校高新技术产业发展项目 |
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| 中文摘要: |
| 选择了几种典型的预应力度定义,分析比较了它们的计算公式,力学概念以及适用范围.给出了以预应力度表示的钢筋混凝土结构的分类,探讨了预应力度对预应力混凝土构件的抗裂性能、延性、挠度等性能的影响.建立了预应力度与预应力混凝土构件的抗裂性能、延性、变形等性能的关系式.提出预应力度可用于预应力工程结构性能分析与设计中. |
| 英文摘要: |
| The degree of prestress is an important characteristic of prestressed concrete structure.In this paper,several classic definitions of prestress degree are researched and their expressions,mechanics concepts and applicable ranges are discussed and compared respectively.The classification of reinforced concrete structure in accordance with degree of prestress is presented.The influence of prestress degree on cracking-against capacity,ductibility and deformation of prestressed concrete structure is discussed.The relationships between prestress degree and cracking-against capacity,ductibility and deformation of prestressed concrete structure are established.Finally,it is brought forward that prestress degree can be used in capable analysis and structure design of prestressed project. |
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