基于应力测试的分布式光纤与锚杆协调变形研究

Research on Coordinating Deformation between Distributed Optical Fiber and Anchor

锚杆工程具有施工工艺简单、安全可靠和经济高效等优点,在基础工程及边坡、基坑、隧道等支护工程中均有较广泛的应用,然而锚杆工程有较高的复杂性和隐蔽性,为确保锚杆工程的安全,仍需进一步的深化锚杆的受力机理研究。分布式光纤传感器是近些年发展的新的测试技术,与传统的传感器对比具有很大的优越性,为了探索分布式光纤在锚杆应力测试中的适用性,需要开展分布式光纤与锚杆协调变形研究。通过在室内标准锚杆杆件刻槽安装分布式光纤,并在万能试验机上模拟锚杆受力加载过程中进锚杆杆体的应力测试,得出分布式光纤与锚杆杆体有较好的协调变形性,研究成果对确保工程质量与安全,减少造价,有着非常重要的经济性与实用性。

Anchor is simple,economic with high practicability and widely used for foundation,slope,foundation pit,tunnel.So the study of mechanism of loading is very important.At present,the method of stress test is point measurement,such as resistor strain sensor,vibrating wire sensor.The distributed optical fiber is a new measurement technologies having greater advantage.The research on coordination deformation between distributed optical fiber and anchor in laboratory by universal testing machine which have important significance.