预应力锚索浆体胶结段承载能力的评定

Bearing Capacity of Cement Grouted Anchor of Prestress Cable

本文根据非线性有限元计算成果及实验结果总结出预应力锚索浆体胶结段的受力特征、破坏机理。在此基础上,根据弹性理论,推导出一个弹性状态下的受力计算公式;给出一个能够反映胶结段破坏机理的承载近似计算公式,并说明采用此公式计算单孔锚固吨位时可获得安全系数的取值范围。

Based on the calculated results by non—line firwte element and the experimental results,the loadcarring characteristic and failure princi- ple of grouted anchor have keen analysed in the paper.Two simplified calculated formulae of kearing capacities,considering the failure principle of gronted anchor,have been estaklished according to elastic theory and analysed nesults.Good agreement is oktained between results fnom expe- riments and the formulae in the paper.