The strength of a rockbolt is one of the key parameters for the design of ground support systems. However, published mechanical performance data by suppliers are usually limited to tensile strength and elongation. To provide additional performance measures, mechanical tests on four commercially available solid reinforcing bar rockbolts have been performed and analysed. In each of the cases, the rockbolts are marketed by the manufacturers as being similar and equivalent products. The mechanical tests have been developed to mimic five modes of failure that include tension, shear, torsion, and nut/thread interface. The results show significant variability in seemingly similarly marketed products. Recommendations are made for suppliers to provide additional testing results (torsion, shear and nut/thread capacity) as standard data within their product specification sheets. A summary of recommended design parameters is provided based on the test results.

中文翻译：

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实心钢筋锚杆的力学性能

锚杆的强度是地面支撑系统设计的关键参数之一。然而，供应商公布的机械性能数据通常仅限于拉伸强度和伸长率。为了提供额外的性能测量，我们对四种商用实心钢筋锚杆进行了力学测试并进行了分析。在每种情况下，制造商都将锚栓作为类似和等效的产品进行销售。已开发出机械测试来模拟五种失效模式，包括张力、剪切、扭转和螺母/螺纹接口。结果表明，看似相似的销售产品存在显着差异。建议供应商提供额外的测试结果（扭转、剪切和螺母/螺纹容量）作为其产品规格表中的标准数据。根据测试结果提供了推荐设计参数的摘要。