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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!ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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。ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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L2ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
其中:ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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5.01dªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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0.89dªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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100mmªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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:ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

d(mm)ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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6ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

8ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

10ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

12ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

14ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

16ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

18ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

20ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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22ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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25ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

28ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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32ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

L0+2L1(mm)ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

42ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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56ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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70ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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84ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

98ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

112ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

126ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

140ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

154ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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175ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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196ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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224ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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最小长度(mm)ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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242ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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256ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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270ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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284ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

298ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

312ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

326ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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340ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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354ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

375ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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396ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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424ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ

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ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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。ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
分享 转发
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2#

好帖ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
赢在起点!
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3#

有学习的价值。顶ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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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。ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
一路求知
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5#

学习下!非常不错~ªZO M†³qQbbs.3c3t.com@쎌ªŸ^3„æ
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