【摘要】 针对预应力锚杆使用过程中张力逐渐降低问题,考虑锚杆系统的卓越频率及加权频率,运用弦振理论,建立锚杆张力与自振频率相关关系模型。通过数值模拟分析的方式探求了自振频率与锚杆张力的相关性,并通过实验进行了验证。更多还原

【Abstract】 The prestressed bolt tension will gradually reduce in using process,in order to solve the above problem,the author has established the relationship model between bolt tension and calculating frequency through considering excellent frequency and power frequency of the bolt system and using the string vibration theory.The relationship between bolt tension and calculating frequency through the numerical simulation and experimental approach is proved,finally,non-destructive testing method which can calculate bolt tension according to calculating frequency is proposed.更多还原