监理检测网论坛

首页 » 试验检测论坛 » 钢材及钢结构试验检测 » 关于钢筋拉伸试验钢筋取样长度的问题
lcm0312 - 2013/8/5 11:04:00
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!ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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。ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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L2ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
其中:ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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5.01dƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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0.89dƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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100mmƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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:ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

d(mm)ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

6ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

8ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

10ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

12ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

14ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

16ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

18ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

20ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

22ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

25ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

28ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

32ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

L0+2L1(mm)ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

42ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

56ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

70ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

84ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

98ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

112ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

126ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

140ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

154ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

175ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

196ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

224ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

最小长度(mm)ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

242ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

256ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

270ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

284ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

298ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

312ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

326ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

340ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

354ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

375ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

396ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

424ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×

ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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。ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
ajun28 - 2013/8/26 11:40:00
好帖ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
童星 - 2013/11/26 20:30:00
有学习的价值。顶ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
woshileihong - 2014/3/29 15:40:00
不错,不过现在钢筋要先测重量偏差,都取5根500mm以上了。ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
lqhlhl - 2014/10/3 16:25:00
学习下!非常不错~ƒ‡Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
1
查看完整版本: 关于钢筋拉伸试验钢筋取样长度的问题