lcm0312
- 高级工程师
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- 2006-07-31
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发表于 2013-08-05 11:04
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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! äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ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。 äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ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 äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ其中: äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ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;äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ原始标距至夹头距离: GB/T228.1中D.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。äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ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。äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔäÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ所以拉伸试样最短取样长度为: 5.01d+0.89d+0.89d+100+100=6.79d≈7d+200。列表如下:äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔäÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔd(mm)äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 6äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 8äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 10äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 12äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 14äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 16äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 18äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 20äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 22äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 25äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 28äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 32äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| L0+2L1(mm)äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 42äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 56äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 70äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 84äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 98äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 112äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 126äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 140äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 154äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 175äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 196äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 224äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 最小长度(mm)äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 242äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 256äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 270äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 284äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 298äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 312äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 326äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 340äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 354äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 375äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 396äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| 424äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
| äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ综上所述,直径 20mm以下钢筋取样长度400mm,直径22mm至32mm取样长度500mm完全满足规范要求。äÓÞû¸Ì,°¡7bbs.3c3t.com¿z×eF.QÔ
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