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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!¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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。¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
其中:¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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:¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

d(mm)¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

6¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

8¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

10¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

12¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

14¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

16¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

18¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

20¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

22¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

25¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

28¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

32¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

L0+2L1(mm)¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

42¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

56¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

70¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

84¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

98¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

112¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

126¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

140¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

154¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

175¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

196¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

224¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

最小长度(mm)¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

242¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

256¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

270¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

284¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

298¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

312¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

326¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

340¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

354¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

375¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

396¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

424¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…

¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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。¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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2#

好帖¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
赢在起点!
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3#

有学习的价值。顶¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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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。¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
一路求知
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5#

学习下!非常不错~¢2az±Þ®"Êbbs.3c3t.com ¶ì­-c1h…
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