| 预应力混凝土水平加腋框架节点受力分析 |
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| 引用本文： | 刘庆文,苏小卒,陆余年,任源.预应力混凝土水平加腋框架节点受力分析[J].上海力学,2008,29(4). |
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| 作者姓名： | 刘庆文 苏小卒 陆余年 任源 |
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| 作者单位： | [1]南昌航空大学,南昌330063 [2]同济大学建筑工程系,上海200092 [3]上海建筑设计研究院有限公司,上海200041 |
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| 摘 要： | 本文对3个预应力混凝土框架节点进行了低周反复荷载作用下的抗震性能试验，研究了加腋节点的传力机理以及预应力对节点抗震性能的影响规律。研究表明，通过量测节点内的箍筋应变，穿过节点核心区的预应力筋对节点核心区双向交替斜向受压混凝土有重要约束作用，改善了节点的抗剪能力。梁端水平加腋节点中预应力筋不穿过节点核心区时，只要在节点核心区配置适量的箍筋，保持节点后期的强度和刚度，也能够满足抗震设防要求。
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| 关 键 词： | 预应力混凝土 框架节点 受力分析 |
Mechanical Analysis of Prestressed Concrete Frame Joints with Spread Ended Beams |
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| LIU Qing-wen,SU Xiao-zu,LU Yu-nian,REN Yuan.Mechanical Analysis of Prestressed Concrete Frame Joints with Spread Ended Beams[J].Chinese Quarterly Mechanics,2008,29(4). |
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| Authors: | LIU Qing-wen SU Xiao-zu LU Yu-nian REN Yuan |
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| Institution: | 1.Nanchang Hangkong University;Nanchang 330063;China;2.Department of Building Engineering;Tongji University;Shanghai 200092;3.Shanghai Institute of Architectural Design & Research;Shanghai 200041;China |
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| Abstract: | Three prestressed concrete frame joints were tested to investigate their seismic behaviour under low frequency reversed loading.Based on the results,the shear transfer mechanism of joints and the effect of prestress on seismic behaviour of joints were studied.Stirrup strains in the joint show that the prestress tendon through the joint core confines the reversed cyclic diagonal compressive concrete strut in the joint core and can improve the shear capability of joints.Joints with spread ended beams which ha... |
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| Keywords: | prestressed concrete frame joint mechanical analysis |
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