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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!MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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。MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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L2MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
其中:MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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5.01dMƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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0.89dMƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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100mmMƒâWºui{bbs.3c3t.coméyz·ÉÂò·
MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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:MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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d(mm)MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

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6MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

8MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

10MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

12MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

14MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

16MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

18MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

20MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

22MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

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25MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

28MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

32MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

L0+2L1(mm)MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

42MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

56MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

70MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

84MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

98MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

112MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

126MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

140MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

154MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

175MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

196MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

224MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

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最小长度(mm)MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

242MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

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256MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

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270MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

284MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

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298MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

312MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

326MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

340MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

354MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

375MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

396MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

424MƒâWºui{bbs.3c3t.coméyz·ÉÂò·

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MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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。MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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2#

好帖MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
赢在起点!
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3#

有学习的价值。顶MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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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。MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
一路求知
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5#

学习下!非常不错~MƒâWºui{bbs.3c3t.coméyz·ÉÂò·
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