Abstract：
Anchor bolts play an important role in tunnel anchoring engineering. The stress of an anchor bolt needs to be monitored in order to ascertain the state of stress. This paper introduces the structural design of the strain dynamometer anchor bolt, as well as the working principles of the digital anchor bolt dynamometer and its application. The dynamometer system was applied in the Qiaoxiang Station to Xiangmihu North Station tunnel of the Shenzhen Metro Line 2, and the working statement of the anchor bolt and the safety conditions of the surrounding rock are analyzed using the measured data.
2012, Vol. 49 