| 钢纤维在工程中的应用 |
| 添加时间：2017/9/14 15:51:05 浏览次数： |
| 钢纤维混凝土在工程中的应用随着我国基本建设的蓬勃发展，钢纤维混凝土近几年来得到了逐步应用和发展。由于钢纤维均匀地乱向分布在混凝土内共同参加工作，显著提高混凝土的抗拉强度和抗变形能力。并提高了混凝土的抗剪、抗弯、抗扭、抗裂抗疲劳强度。对于工程建设来说是一种很好的改性材料，值得推广应用。 The application of steel fiber reinforced concrete to the construction of China has been developed rapidly, and steel fiber concrete has been gradually applied and developed in recent years. Due to the uniform distribution of steel fibers in the concrete, the tensile strength of concrete and the resistance to deformation are significantly improved. The anti-shear, bending, anti-twist and anti-cracking resistance of concrete are improved. It is a good modification material for engineering construction. 在高层建设中采用钢纤维混凝土的有福州华福大厦，该工程地上31层，地下2层，一至八层为商业与办公室用房，层高高、开间大，九层以上为公寓，层高低、开间小，故在八层顶采用结构转换层，该转换层大梁全部采用钢纤维混凝土。钢纤维掺量为混凝土体积的1%，相当于每立方混凝土掺78公斤钢纤维。采用扬中工程纤维厂生产的剪切扭曲型钢纤维，混凝土强度等级C40，石子粒径不大于20。二幢大厦转换层大梁共计混凝土500m3，使用钢纤维近40吨。施工时由人工将钢纤维均匀地抛撒在砂石骨料中，先干拌均匀后再加水泥与水进行正常搅拌，比普通混凝土多一道干拌工序。其抗剪能力约提高45%，建成后效果较好。 In the high-rise building with steel fiber reinforced concrete has fuzhou wolfers building, the project 31st floor on the ground, underground 2 floors, one to eight steps for commercial and office buildings, layer, large width, high more than nine layers for the apartment, layer height, small studio, so at the top of the eighth floor, the transformation layer is adopted, the transformation layer girder are all made of steel fiber reinforced concrete. The steel fiber content is 1% of the volume of concrete, equivalent to 78 kilograms of steel fiber per cubic concrete. Adopt the shear distortion section steel fiber, which is produced by yang-china engineering fiber factory, the strength level of concrete is C40, and the pebble size is not greater than 20. The second building has a total of 500m3 of concrete, using nearly 40 tons of steel fiber. Construction by artificial will steel fiber evenly scatters in the sand and gravel aggregate, dry mix well before plus cement mixing with normal water, dry mixing process more than ordinary concrete. Its shear ability is about 45 percent, and its effect is better after it is built. |
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