CAJ | 학술논문

采用分布式光纤传感技术对赫章特大桥195 m主墩下的大直径嵌岩桩承载特性进行了系统的研究分析。首先采用室内模型试验验证了光纤技术在桩基测试中应用的可行性；然后通过现场埋设和施工过程中的数据采集、整理与分析，系统研究了大直径嵌岩桩的承载特性及其荷载传递机制；依托工程的实测变形量进一步证明了光纤测试技术的可行性和正确性。基于全分布式光纤传感技术的研究结果对大直径嵌岩桩理论及其工程应用具有参考价值，同时对光纤测试技术在桩基测试中的应用具有借鉴作用。
채용분포식광섬전감기술대혁장특대교195 m주돈하적대직경감암장승재특성진행료계통적연구분석。수선채용실내모형시험험증료광섬기술재장기측시중응용적가행성；연후통과현장매설화시공과정중적수거채집、정리여분석，계통연구료대직경감암장적승재특성급기하재전체궤제；의탁공정적실측변형량진일보증명료광섬측시기술적가행성화정학성。기우전분포식광섬전감기술적연구결과대대직경감암장이론급기공정응용구유삼고개치，동시대광섬측시기술재장기측시중적응용구유차감작용。
Large-diameter rock-socketed piles are used to support the pier with the height of 195 m at Hezhang bridge, to acquire its bearing behaviors, distributed fiber optic sensing technology is implemented to monitor the continous distributed strains of the large-diameter rock-socketed piles. At first, indoor model tests are performed to verify that the fiber optic technology is available to monitor the compressive strain when the pile is loaded. And then, the design and in-situ installation of fiber optic sensors is carried out on the basis of Hezhang bridge;and the testing data during construction are collected as well. Through the data treatment and analysis, the bearing behaviors and load transfer mechanism of the large-diameter rock-socketed piles are researched. Comparing with the actual settlement of the support engineering, fiber optic sensing technology is further testified to be feasible. The research results have reference value for pile theory and the application of fiber optic sensing technology to similar projects.