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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!º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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。º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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L2º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
其中:º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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5.01dº·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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0.89dº·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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100mmº·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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:º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

d(mm)º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

6º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

8º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

10º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

12º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

14º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

16º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

18º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

20º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

22º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

25º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

28º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

32º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

L0+2L1(mm)º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

42º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

56º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

70º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

84º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

98º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

112º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

126º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

140º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

154º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

175º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

196º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

224º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

最小长度(mm)º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

242º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

256º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

270º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

284º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

298º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

312º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

326º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

340º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

354º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

375º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

396º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

424º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=

º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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。º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
分享 转发
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2#

好帖º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
赢在起点!
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3#

有学习的价值。顶º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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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。º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
一路求知
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5#

学习下!非常不错~º·½Îª{·Áœbbs.3c3t.com¼O­×Q3ˆ=
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