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lcm0312
- 高级工程师
- 419
- 2657
- 2006-07-31
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1#
t
T
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！ hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}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。 hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}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 hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}其中： hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}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；hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}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。hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}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。hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}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：hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}d(mm)hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 6hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 8hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 10hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 12hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 14hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 16hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 18hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 20hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 22hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 25hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 28hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 32hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| L0+2L1(mm)hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 42hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 56hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 70hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 84hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 98hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 112hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 126hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 140hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 154hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 175hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 196hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 224hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 最小长度(mm)hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 242hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 256hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 270hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 284hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 298hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 312hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 326hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 340hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 354hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 375hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 396hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
| 424hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É} hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
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hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}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。hê¨Ö/,Ë(Mbbs.3c3t.comþÅVH@§>É}
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