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中文摘要：
针对目前钢拉杆构件缺少施工荷载下的内力测试和服役期间的长期监测手段问题，采用玻璃钢封装技术研制开发出一种新型的基于光纤光栅绝对测量传感技术的高耐久性智能钢拉杆。在理论屈服荷载85％的拉伸荷载下，智能钢拉杆感知的应变具有很好的线性度和重复性，由其得到的测试杆力与实验张拉力吻合良好，误差在4％以内。该智能钢拉杆具有抗电磁干扰、传感距离长、成本低、耐腐蚀、绝对测量等优点，既可以方便给出任何阶段的受力状态，也可以作为一个大应变式荷载传感器对其相邻的结构进行荷载监测，适合用于恶劣服役环境下的钢拉杆工程结构。
英文摘要：
In view of the lack of effective methods for the measurement of internal force under the construction loads and the long-term monitoring in service of steel tie rods, a novel high-durable smart steel tie rod based on the fiber Bragg grating （FBG） absolute measuring technology and packaged by glass fiber reinforced plastic （GFRP） was developed. The strain detected by the FBG strain sensors has a very good linearity and repeatability under 85% tensile load of the theoretical yield load, and the measured rod force agrees well with the stretching force （relative error ≤4%）. The advantages of the smart steel tie rod, such as durability, anti-corrosion, electro-magnetic resistance, low cost and absolute measurement, were verified. It can indicate the state of stress in any phase, and can be regarded as a large strain load sensor used to measure the stress of the steel tie rod or some components adjacent to it. It is suitable for monitoring the stress exerted on the steel tie rod sturctures serviced in harsh environment.
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