| PC小箱梁开裂机理有限元仿真分析 |
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| 引用本文： | 郭云强,等.PC小箱梁开裂机理有限元仿真分析[J].价值工程,2014(9):107-108. |
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| 作者姓名： | 郭云强 |
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| 作者单位： | [1]长安大学公路学院,西安710064 [2]福州沈海高速公路有限责任公司,福州350000 |
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| 摘 要： | 以福建省某30米跨径预制小箱梁桥为依托实例,利用Midas Fea土木专用非线性软件对PC小箱梁在施工期间预应力的偏位及预应力偏位与超张拉综合作用是否会导致箱梁底板产生纵向裂缝进行了仿真分析计算,通过对不同预应力偏位程度及超张拉多种分析工况的计算结果分析比较,研究PC小箱梁开裂原因,为PC小箱梁混凝土防裂提供理论依据。
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| 关 键 词： | PC小箱梁 裂缝 Midas Fea 混凝土防裂 |
Finite Element Simulation Analysis of PC Small Box-girder Cracking |
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| GUO Yun-qiang,KE Ting-xian,WU Xiao-guang.Finite Element Simulation Analysis of PC Small Box-girder Cracking[J].Value Engineering,2014(9):107-108. |
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| Authors: | GUO Yun-qiang KE Ting-xian WU Xiao-guang |
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| Institution: | 1)School of Highway, Chang＇an University, Xi＇an 710064, China ; (2)Fujian Shenhai Highway Co., Ltd., Fuzhou 350000, China ) |
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| Abstract: | Based on a prefabricated small box-girder bridge with a length of thirty meters in Fujian province, this paper researches the whether the comprehensive effect of offset and pre-stressed deviation and super tension will lead to the longitudinal crack of bottom plate of box beam by midas FEA special nonlinear software in construction stage. It provides a theoretical basis for the prevention of PC small box-girder cracking through the calculation of different prestressed deviation degree and over a variety of analysis case analysis and comparison of the results. |
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| Keywords: | PC small box-girder crack Midas Fea concrete crack control |
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