文章摘要
曹伟.桩端岩石点荷载强度试验数据的处理应用[J].安徽建筑大学学报,2017,25(3):21-25
桩端岩石点荷载强度试验数据的处理应用
Application of Test Data of Rock Point-load Strength Test at Pile Tip
  
DOI:10.11921/j.issn.2095-8382.20170305
中文关键词: 岩石单轴抗压强度Rc  岩石点荷载强度Is  经尺寸修正后的岩石点荷载强度Is(50)  Excel。
英文关键词: rock uniaxial compressive strength Rc  rock point load strength Is  rock point load strength after size correction Is(50)  Excel.
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作者单位
曹伟 中铁时代建筑设计院有限公司安徽 芜湖 241001 
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中文摘要:
      在岩石作为桩基础持力层时,单轴抗压强度试验适用于能制成规则试件的各类岩石,但对于某些岩石尤其是风化岩石现场验槽或勘察中很难取出完整岩芯、难以制作符合岩石单轴抗压强度试验要求的试件,为了简洁方便可以采用岩石的点荷载强度试验来迅速有效地解决施工验槽或勘察取样问题。试验得到点荷载强度Is,再通过相关统计计算得到修正值Is(50),最终得到单轴抗压强度Rc。该项试验是通过点荷载试验仪,对未加工成型的岩块、不规则岩块体进行测试,得到岩石点荷载强度。该试验有方法简便、成本低等优点,有利于现场操作,同时可以运用Excel的统计、计算、作图等功能可大大减少工作量,提高运算的准确性,为工程实践提供了非常便利的条件。
英文摘要:
      Uniaxial-compressive-strength test is applicable for rocks of which specimen of regular shapes could be made outas long as rock is the pile foundation bearing stratum. But, for certain types of rocks, especially weathered rocks, it is difficult to produce complete rock cores using on-site pit inspection or exploration, thus making it difficult to make specimen that meets the requirements for rock uniaxial-compressive-strength test. Rock point-load-strength test, a concise and simple test, could be applied to quickly and effectively solve the rock cores collection problems in on-site pit inspection or exploration. The test produces point-load-strength Is, then Correction Value Is (50) is generated using relevant statistical calculations. Finally, the uniaxial-compressive-strength Rc is obtained. Using the point load test instrument, this test tests the unshaped and irregular rock mass to get the rock point-load-strength. This test method is simple, of low cost, and easy for field implementation. Also, Excel's statistics, calculation, and drawing functions could be used to significantly reduce the workload, improve calculation accuracy, and provide great convenience for engineering practice.
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