摘要
分析不同布设方式下表面粘贴式塑料光纤-混凝土复合体中各相材料间的应变传递关系,建立了表面粘贴式塑料光纤与混凝土间应变传递模型,并通过数值模拟验证模型的正确性,然后对模型中的主要参数进行敏感性分析。结果表明,胶层宽度、总厚度及形状对应变传递效果影响不大,为有利于应变传递,宜选用固化后弹性模量约为1 GPa的胶剂,并尽量使塑料光纤靠近混凝土表面粘贴,且粘贴长度大于300 mm。
Strain transfer relationship between surface-bonded plastic optical fibers(POFs)and concrete under different layouts is analyzed,based on which a strain transfer model between surface-bonded POFs and concrete is constructed.Numerical simulation is carried out to verify the correctness of the model and sensitivity analysis of the main parameters in the model is studied.The results show that,the width,thickness and shape of the adhesive layer have little effect on the strain transfer.In favor of the effect of strain transfer,it is suggested that the elastic modulus of the solidified glue is about 1 GPa and the POF is bonded close to the surface of the concrete with the bonding length greater than 300 mm.
作者
包腾飞
李涧鸣
赵津磊
BAO Tengfei;LI Jianming;ZHAO Jinlei(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,China;National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety,Hohai University,Nanjing 210098,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Jiangsu Surveying and Design Institute of Water Resources Co.,Ltd.,Yangzhou 225127,China)
出处
《水利水电科技进展》
CSCD
北大核心
2018年第5期59-64,共6页
Advances in Science and Technology of Water Resources
基金
国家重点基础研究发展计划(2016YFC0401601)
国家自然科学基金(51579086
51739003)
关键词
混凝土
塑料光纤
应变传递
结构健康监测
敏感性分析
concrete
plastic optical fiber
strain transfer
structural health monitoring
sensitivity analysis
