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关于钢筋拉伸试验钢筋取样长度的问题 [复制链接]

1#
大家都清楚钢筋试验在工程中是最基础最广泛的试验检测项目之一,其意义重要程度是不言而喻的。本贴致那些刚刚步入钢筋试验领域的新手们!ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
如题所示,对于检测新手或不熟悉钢筋拉伸试验的朋友,经常会对钢筋拉伸试件取样长度产生异议,现就此问题简单说明。ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
钢筋拉伸试验试样长度由三部分组成,即:原始标距L0+2倍原始标距至夹头距离L1+2倍夹持长度L2ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
其中:ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
原始标距:GB/T228.1中规定原始标距L0=k(此处k值取5.65,为例),即5.01dñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
原始标距至夹头距离:GB/T228.1D.2.2中规定“……试样原始标距的标记与最接近夹头的距离不小于,即0.89dñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
夹持长度:一般万能试验机夹头长度约为120mm,有效夹持长度至少约为100mmñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
所以拉伸试样最短取样长度为:5.01d+0.89d+0.89d+100+1006.79d7d+200。列表如下:ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

d(mm)ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

6ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

8ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

10ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

12ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

14ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

16ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

18ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

20ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

22ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

25ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

28ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

32ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

L0+2L1(mm)ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

42ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

56ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

70ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

84ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

98ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

112ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

126ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

140ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

154ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

175ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

196ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

224ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

最小长度(mm)ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

242ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

256ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

270ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

284ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

298ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

312ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

326ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

340ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

354ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

375ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

396ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

424ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9

ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
综上所述,直径20mm以下钢筋取样长度400mm,直径22mm32mm取样长度500mm完全满足规范要求。ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
分享 转发
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2#

好帖ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
赢在起点!
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3#

有学习的价值。顶ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
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4#

不错,不过现在钢筋要先测重量偏差,都取5根500mm以上了。ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
一路求知
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5#

学习下!非常不错~ñyBïnct½Ûbbs.3c3t.comÊÑ6´Ä{…õp9
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