| 预应力混凝土梁反拱度试验和分析 |
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| 引用本文： | 李锋丹,吴桐,宋金良,韩永强.预应力混凝土梁反拱度试验和分析[J].低温建筑技术,2012,34(9):71-73. |
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| 作者姓名： | 李锋丹 吴桐 宋金良 韩永强 |
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| 作者单位： | 东北林业大学,哈尔滨,150040 |
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| 摘 要： | 预应力混凝土梁由于偏心预加力的存在,梁体将产生向上的挠度,即弹性反拱度。另外,张拉预应力束后在徐变作用下梁会继续产生上挠,即徐变反拱度1]。本文以复兴泡大桥为工程背景,对预制预应力混凝土箱梁的弹性反拱度和徐变反拱度进行研究。并建立梁体的MIDAS/Civil模型,将实测反拱值与模型模拟值进行对比分析,并对徐变系数的计算式进行修正。
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| 关 键 词： | 预应力混凝土梁 弹性反拱度 徐变反拱度 |
PRESTRESSED CONCRETE ENGINEERING BEAM TEST AND ANALYSIS OF THE ARC |
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| LI Feng-dan
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WU Tong
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SONG Jin-liang
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HAN Yong-qiang.PRESTRESSED CONCRETE ENGINEERING BEAM TEST AND ANALYSIS OF THE ARC[J].Low Temperature Architecture Technology,2012,34(9):71-73. |
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| Authors: | LI Feng-dan WU Tong SONG Jin-liang HAN Yong-qiang |
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| Affiliation: | (Northeast Forestry University,Harbin 150040,China) |
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| Abstract: | Prestressed concrete beam due to strength of prestressed eccentric existence,will produce a different from common of the reinforced concrete beam up deflection,that is elastic anti-camber.In addition,after prestressing the strand,concrete beam will continue to produce an upward deflection under the creep,that is creep of the anti-camber.This article to the Fu Xing Pao bridge registered for the engineering background,to research precast prestressed concrete box girder elastic anti-camber and creep anti-camber.And use MIDAS/Civil to establish finite element model,compare the statistics of elastic anti-camber data with simulated data,and the calculated value of this creep coefficient of actual engineering modified computing type. |
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| Keywords: | prestressed concrete beam elastic anti-camber creep of the anti-camber |
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