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首页> 外文会议>International Symposium on Geotechnical Measurements and Modelling; Sep 23-25, 2003; Karlsruhe, Germany >Long-term monitoring of 4500 kN rock anchors in the Eder gravity dam using fibre-optic sensors
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Long-term monitoring of 4500 kN rock anchors in the Eder gravity dam using fibre-optic sensors

机译：使用光纤传感器对Eder重力坝中的4500 kN岩石锚进行长期监测

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摘要

Steel anchors were installed in a gravity-dam, in order to increase the stability of the dam. Quasi-distributed fibre-optic strain sensors are centrally positioned in the complete length of these anchors to detect the long-term behaviour of the tendon bonded to the rock foundation. Because the sensor rod containing the measuring lengths is directly bonded to the grout in the fixed anchor length area, it is able to measure the longitudinal strain distribution in the anchor bond area. Such sensors help to evaluate the bonding of the fixed anchor bond length in a rock or in difficult ground areas. Design of the anchors, manufacturing and onsite installation are shortly described. The measurement principle, its characteristics and specific features are presented. Measurement results obtained over a number of years show the ability of sensor-equipped anchors to monitor the long-term tendon bond behaviour.
机译：为了增加水坝的稳定性，钢锚被安装在重力坝中。准分布的光纤应变传感器位于这些锚的整个长度的中央，以检测粘结到岩石基础上的腱的长期行为。因为包含测量长度的传感器杆直接在固定的锚固长度区域中粘结到灌浆，所以它能够测量锚固粘结区域中的纵向应变分布。这种传感器有助于评估岩石或困难地面区域中固定锚固长度的粘结性。简短介绍了锚的设计，制造和现场安装。介绍了测量原理，特点和特点。多年来获得的测量结果表明，配备传感器的锚能够监视长期的肌腱粘结行为。

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