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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!¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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。¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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L2¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
其中:¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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5.01d¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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0.89d¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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100mm¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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:¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

d(mm)¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

6¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

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8¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

10¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

12¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

14¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

16¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

18¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

20¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

22¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

25¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

28¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

32¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

L0+2L1(mm)¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

42¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

56¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

70¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

84¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

98¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

112¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

126¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

140¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

154¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

175¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

196¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

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224¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

最小长度(mm)¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

242¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

256¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

270¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

284¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

298¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

312¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

326¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

340¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

354¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

375¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

396¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

424¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*

¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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。¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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2#

好帖¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
赢在起点!
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3#

有学习的价值。顶¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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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。¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
一路求知
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5#

学习下!非常不错~¤Þ„yš”uïÎbbs.3c3t.com O¢q™Wüõü*
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