基于光栅传感技术的模型桩弯曲变形及刚度测试方法  

Measuring method of bending deformation and stiffness of model pile based on grating sensor technique

作　　者：汪云龙[1] 轩浩 付海清[1,3] 

机构地区：[1]中国地震局工程力学研究所,中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [2]黑龙江省建筑设计研究院,黑龙江哈尔滨150060 [3]山东省地震局,山东济南250014

出　　处：《自然灾害学报》2016年第4期120-123,共4页Journal of Natural Disasters

基　　金：中国地震局工程力学研究所基本科研业务费专项资助项目(2016C02);国家自然科学基金项目(41272357,51278472)~~

摘　　要：土工模型试验是研究工程防灾减灾的重要技术手段,模型桩的弯曲变形与弯曲刚度是重要的试验参数。分布式光纤光栅传感技术被研究用来测试薄壁铝制模型桩的弯曲变形和弯曲刚度。从传感原理和力学原理出发给出了试验方法,并将测试结果与理论计算结果进行了对比,以验证该方法试验结果的合理性。研究结果表明,该方法为模型试验中的模型桩特别是薄壁模型桩弯曲变形和弯曲刚度的测量提供了一种适用、可靠的参考方法。Civil engineering model test is an important technical measure to research engineering disaster prevention and mitigation. Bending deformation and stiffness of model pile is an important tested parameter. Distributed fiber Bragg grating （FBG） method was introduced based on the sensing and mechanical principles. In order to prove the reasonability of the method, the measured value was compared with the theoretical calculated results. The results show that the proposed method could be used for the measurement of bending deformation and stiffness of model pile during the model tests, especially for the thin-walled tubes model.

关 键 词：弯曲变形 弯曲刚度 模型试验 光纤布拉格光栅 材料力学 

分 类 号：TU41[建筑科学—岩土工程]