南京大学学报(自然科学版) ›› 2018, Vol. 54 ›› Issue (6): 10571063.doi: 10.13232/j.cnki.jnju.2018.06.001
• 环境工程地质学专栏 • 下一篇
缪长健1,施斌1?,郑兴1,王湛2,魏广庆3
Miao Changjian1,Shi Bin1*,Zheng Xing1,Wang Zhan2,Wei Guangqing3
摘要: 布里渊光频域分析技术(Brillouin Optical Frequency Domain Analysis,BOFDA)是全分布式光纤感测技术中的一种,具有独特的测试与监测优势. 将BOFDA应用于海上超长PHC(Prestressed High Strength Concrete)管桩内力测试,并在超长PHC管桩成桩过程中,就将传感光缆植入桩身中,可明显提高传感光缆的成活率和测试精度. 现场测桩试验结果表明:在超长PHC管桩成桩过程中传感光缆的植入工艺是十分成功的,桩身轴力和侧摩阻力测试结果能够很好地反映桩身内力的分布变化规律,成效显著,为PHC管桩,特别是海上超长PHC管桩的内力测试提供了一种新的内力测试方法,值得推广.
中图分类号:
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