Study on the Deformation Measurement of the Cast-In-Place Large-Diameter Pile Using Fiber Bragg Grating Sensors.
Study on the Deformation Measurement of the Cast-In-Place Large-Diameter Pile Using Fiber Bragg Grating Sensors.
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光纤光栅传感器测量大直径灌注桩变形的研究
DOI：
10.3390/s17030505
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发表时间：
2017-03-03
期刊：
影响因子：
--
通讯作者：
Yu X
中科院分区：
文献类型：
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作者：
Gao L;Yang K;Chen X;Yu X
大直径灌注桩（PCC桩）与传统的圆形桩相比，具有桩侧面积大、承载力高等优点。在同等条件下，它比方桩等其它桩型更经济。PCC桩的变形对它的应用是非常重要的。为了获得PCC桩的变形，一种新型的准分布式光纤传感技术称为光纤布拉格光栅（FBG）被用来监测PCC桩的变形。制作了PCC模型桩，设计了PCC模型桩的封装工艺和光纤传感器的布置，并基于FBG传感器对PCC模型桩的应变进行了监测。通过静载荷试验，分析了PCC桩的应变。结果表明，光纤光栅技术成功地应用于PCC桩的变形监测，监测数据对PCC桩更有用。为工程应用提供参考。
Compared with conventional piles such as the circle pile, the cast-in-place large-diameter pile (PCC pile) has many advantages: the lateral area of PCC pile is larger and the bearing capacity of PCC pile is higher. It is more cost-effective than other piles such as square pile under the same condition. The deformation of the PCC pile is very important for its application. In order to obtain the deformation of the PCC pile, a new type of quasi-distributed optical fiber sensing technology named a fiber Bragg grating (FBG) is used to monitor the deformation of the PCC pile. The PCC model pile is made, the packaging process of the PCC model pile and the layout of fiber sensors are designed, and the strains of the PCC model pile based on FBG sensors are monitored. The strain of the PCC pile is analyzed by the static load test. The results show that FBG technology is successfully applied for monitoring the deformation of the PCC pile, the monitoring data is more useful for the PCC pile. It will provide a reference for the engineering applications.