| 混凝土轴拉试件裂缝亚临界扩展量简化计算方法 |
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| 引用本文： | 孙荣书,杜新月,王学志,刘华新.混凝土轴拉试件裂缝亚临界扩展量简化计算方法[J].辽宁工学院学报,2010(2):106-108. |
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| 作者姓名： | 孙荣书 杜新月 王学志 刘华新 |
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| 作者单位： | [1]辽宁工业大学土木建筑与工程学院,辽宁锦州121001 [2]沈阳军区建筑设计院,辽宁沈阳110015 |
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| 基金项目： | 国家自然科学基金资助项目（50709013） |
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| 摘 要： | 目前,轴拉试件断裂参数存在计算繁琐的问题。针对轴拉试件断裂研究,结合已有的试验数据,提出了计算轴拉试件裂缝亚临界扩展量Δa简化计算公式,免去了计算中反复迭代过程,从而大大简化裂缝亚临界扩展量Δa计算过程。对于轴拉试件可以较方便的计算双K参数,具有较高的精度。因此,简化方法在轴拉试件缝高比α=0.1～0.4范围内满足手算要求。
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| 关 键 词： | 轴拉试件 裂缝亚临界扩展长度 双K参数 |
Short-cut Calculation for Determining Precritical Crack Propagation Length on Axial Tensile Speamen |
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| SUN Rong-shu,DU Xin-yue,WANG Xue-zhi,LIU Hua-xin.Short-cut Calculation for Determining Precritical Crack Propagation Length on Axial Tensile Speamen[J].Journal of Liaoning Institute of Technology(Natural Science Edition),2010(2):106-108. |
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| Authors: | SUN Rong-shu DU Xin-yue WANG Xue-zhi LIU Hua-xin |
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| Affiliation: | 1.Civil Engineering College,Liaoning University of Technology,Jinzhou 121001,China;2.Shenyang Military Area Construction Designing Institute,Shenyang 110015,China) |
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| Abstract: | There were problems in the compute process of double-K fracture about axial tensile specimen.Based on the study of fracture of the axial tensile and the obtained experimental data,the short-cut calculation formula was proposed for determining the precritical crack propagation length Δa of axial tensile specimen.The iterative compute process was avoided by this simplified method as mentioned short-cut one.The simplified methods has successfully simplified the compute process of double-K fracture parameters in the axial tensile specimen（The initial crack/depth ratio α=0.1-0.4）,in very high precision. |
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| Keywords: | axial tensile specimen precritical crack propagation length double-K fracture parameters |
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