| 大骨料混凝土缝端张开位移（COD） |
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| 引用本文： | 涂传林,牛焱州.大骨料混凝土缝端张开位移（COD）[J].实验力学,1993,8(2):180-186. |
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| 作者姓名： | 涂传林 牛焱州 |
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| 作者单位： | 能源部水利部中南勘测设计研究院，能源部水利部中南勘测设计研究院，能源部水利部中南勘测设计研究院 长沙，410014，长沙，410014，长沙，410014 |
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| 摘 要： | 本文通过对大骨料全级配水工混凝土的系列三点弯曲梁试验表明;混凝土缝端临介张开位移 COD 具有明显的尺寸效应,COD 不能作为控制混凝土失稳断裂的材料参数;骨料最大粒径 D_max对 COD 无明显影响。
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| 关 键 词： | 大骨料混凝土 缝端 张开位移 |
Critical Crack Tip Opening Displacement of 3-Point Notched Bending Specimen Made of Concrete with Large Aggregate |
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| Tu Chuanlin Niu Yanzhou Lu Zhongming Mid-South Design Research Institute for Hytroelectric Projects.Critical Crack Tip Opening Displacement of 3-Point Notched Bending Specimen Made of Concrete with Large Aggregate[J].Journal of Experimental Mechanics,1993,8(2):180-186. |
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| Authors: | Tu Chuanlin Niu Yanzhou Lu Zhongming Mid-South Design Research Institute for Hytroelectric Projects |
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| Institution: | Tu Chuanlin Niu Yanzhou Lu Zhongming Mid-South Design Research Institute for Hytroelectric Projects |
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| Abstract: | A series of 3-point bending specimen,notched in full gradation,made of concrete with large aggregate,were tested.The results show that the critical crack tip opening displacement(COD) has obviously size effect.COD can not be used as control parameter of concrete while studying unsta- ble crack propagation.And,the maximum aggregate diameter has no obvious effect on COD. |
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| Keywords: | large aggregate concrete full gradation cracktip opening displacement (COD) |
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