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楼主 |
发表于 2010-12-7 08:31:20
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来自 加拿大
gr_fric为锚索所注水泥砂浆(楼主所说的锚固剂)的摩擦角,在CABLE单元中,锚固段砂浆的破坏遵循M-C破坏准则,所以强度强度参数c和 φ都很重要啊!
本人以为自由段的可以不给(自由段砂浆和刚绞线之间是波纹管),而锚固 ...
ssw1216 发表于 2007-5-5 08:44 
In my example, I assumed that the shear behavior of grout is only dependent on the grout cohesive strength, the normal-stress dependent frictional strength was not considered. This assumption is controversial, but I think it's kind of realistic. The results obtained from pull out tests of rock bolt in laboratory where no confinements is applied is similar to the results from field tests where confinements is dramatic. |
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