| 预应力混凝土连续箱梁有限元损伤分析(英文) |
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| 引用本文： | 张峰,李术才,李树忱,叶见曙,雷笑.预应力混凝土连续箱梁有限元损伤分析(英文)[J].东南大学学报,2009,25(2):236-240. |
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| 作者姓名： | 张峰 李术才 李树忱 叶见曙 雷笑 |
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| 作者单位： | 张峰,李术才,李树忱,Zhang Feng,Li Shucai,Li Shuchen(山东大学土建与水利学院,济南,250061);叶见曙,雷笑,Ye Jianshu,Lei Xiao(东南大学交通学院,南京,210096) |
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| 基金项目： | Post-Doctoral Innovative Projects of Shandong Province，国家自然科学基金 |
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| 摘 要： | 为了确定预应力混凝土箱粱的极限承载能力,进行了预应力混凝土连续箱梁的破坏性试验,提出一种有限元损伤分析方法模拟箱梁结构行为.基于实体退化壳单元对箱梁进行模拟,并考虑了结构材料的非线性效应.由于预应力混凝土箱梁中通常存在大量曲线预应力钢筋,提出一种组合单元,并用该单元模拟箱梁中的预应力钢筋,该方法可使结构分析时单元数量大大降低.试验结果和理论分析对比表明:提出的方法能够有效地用于预应力混凝土连续箱梁的破坏性试验计算分析中;研究的旧桥依然存在较大的极限承载能力.
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| 关 键 词： | 实桥破坏性试验 预应力混凝土箱梁 有限元分析 组合单元 预应力钢筋 极限承载能力 |
Finite element failure analysis of continuous prestressed concrete box girders |
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| Zhang Feng Li Shucai Li Shuchen Ye Jianshu Lei Xiao.Finite element failure analysis of continuous prestressed concrete box girders[J].Journal of Southeast University(English Edition),2009,25(2):236-240. |
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| Authors: | Zhang Feng Li Shucai Li Shuchen Ye Jianshu Lei Xiao |
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| Institution: | Zhang Feng1 Li Shucai1 Li Shuchen1 Ye Jianshu2 Lei Xiao2(1School of Civil , Hydraulic Engineering,Sh,ong University,Jinan 250061,China)(2School of Transportation,Southeast University,Nanjing 210096,China) |
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| Abstract: | In order to analyze the load carrying capacity of prestressed concrete box girders,failure behaviors of in-situ deteriorated continuous prestressed concrete box girders under loading are experimentally observed and a finite failure analysis method for predicting behaviors of box girders is developed.A degenerated solid shell element is used to simulate box girders and material nonlinearity is considered.Since pre-stressed concrete box girders usually have a large number of curve pre-stressed tendons,a type ... |
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| Keywords: | full-scale failure test prestressed concrete box girder finite element analysis combined element prestressed tendon load carrying capacity |
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