CAJ | 학술논문

应用光纤布拉格光栅温度传感器和应变传感器现场监测了混凝土挡土墙浇注早期的变形和温度变化情况.由于光纤布拉格光栅同时感应温度和变形,需要用布拉格光栅温度传感器对应变传感器进行温度补偿.监测结果表明,光纤布拉格光栅监测系统适用于混凝土早期性能的现场监测,通过与普通传感器监测结果对比,光纤传感器的结果更稳定,准确,且该监测系统可继续对混凝土结构的中长期性能进行实时监测.
응용광섬포랍격광책온도전감기화응변전감기현장감측료혼응토당토장요주조기적변형화온도변화정황.유우광섬포랍격광책동시감응온도화변형,수요용포랍격광책온도전감기대응변전감기진행온도보상.감측결과표명,광섬포랍격광책감측계통괄용우혼응토조기성능적현장감측,통과여보통전감기감측결과대비,광섬전감기적결과경은정,준학,차해감측계통가계속대혼응토결구적중장기성능진행실시감측.
In this paper,FBG temperature senser and strain sensor have been used to monitor shrinkage and temperature of concrete retaining wall in construction site within its casting early age.As FBG senses both strain and temperature simultaneously,thermal shift of FBG strain senor is compensated by FBG temperature sensor.The test results indicate that this FBG monitoring system is feasible for monitoring concrete properties at its early age.The dual FBG monitoring technique applied in this research could be extended to monitor shrinkage and temperature for other concrete structures.