| 预应力混凝土极限抗弯承载力计算的等效荷载法 |
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| 引用本文： | 吴京,孟少平. 预应力混凝土极限抗弯承载力计算的等效荷载法[J]. 工业建筑, 1999, 29(9): 24-28,45 |
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| 作者姓名： | 吴京 孟少平 |
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| 作者单位： | 东南大学预应力工程研究所,南京,210096 |
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| 基金项目： | 国家自然科学基金!(编号 :59338130 ) |
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| 摘 要： | 针对预应力结构的受力特点,将预应力钢筋对结构的贡献区分为粘结前作用和粘结后作用,粘结前作用可用等效荷载来代替,而粘结后作用可视为相同位置的等效钢筋,并依此推导了相应的基于等效荷载法的正截面抗弯承载能力验算公式,提出的计算方法物理意义明确,形式简单,将有利于推广预应力技术在工程中的应用。
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| 关 键 词： | 预应力 承载能力 等效荷载 |
EQUIVALENT LOAD METHOD IN ULTIMATE BENDING STRENGTH CALCULATION OF POST-TENSIONED PRESTRESSED STRUCTURES |
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| Wu Jing,Meng Shaoping. EQUIVALENT LOAD METHOD IN ULTIMATE BENDING STRENGTH CALCULATION OF POST-TENSIONED PRESTRESSED STRUCTURES[J]. Industrial Construction, 1999, 29(9): 24-28,45 |
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| Authors: | Wu Jing Meng Shaoping |
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| Abstract: | Focused on the behavior characteristic of prestressed concrete structure,this paper classifies the contribution of prestressed tendon as pre-bonding effects and post-bonding effects Pre-bonding effects can be replaced by equivalent load,while post-bonding effects can be looked upon as equivalent reinforcement According to this concept,the calculation equation of ultimate bending capacity on normal section has been derived on the basis of equivalent load method This method,which has both clear physical meaning and simple form,will benefit in popularization of application of prestressed structures in engineering |
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| Keywords: | Prestressing ultimate capacity equivalent load |
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