光纤Bragg光栅在公路软基沉降监测中的应用  

Fiber Bragg grating monitoring technology applied in soft ground settlement of highway

作　　者：黎剑华[1] 张鸿[1] 刘优平[1] 周院芳 熊茂东 

机构地区：[1]南昌工程学院土木与建筑工程学院,江西南昌330099 [2]江西公路开发总公司,江西南昌330038

出　　处：《中南大学学报（自然科学版）》2011年第5期1442-1446,共5页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50969007);江西省科技计划项目(2010BGB01302);江西省交通运输厅重点科技项目(2010C00013;2010C00014)

摘　　要：针对目前我国高速公路软基沉降监测中的自动化程度及仪器可靠性低、数据传输不及时、测量误差大等现状,将光纤传感监测技术应用于该领域,探讨大量程光纤位移计的开发以及适合软基沉降监测的光纤传感器埋设工艺,并应用于德昌(江西德兴—南昌)高速公路D10标的软基沉降监测。研究结果表明:开发的大量程光纤位移计能满足软基沉降监测要求,与常规监测结果相比可靠性高,并能实现软基沉降数据的实时、在线、连续监测。The fiber Bragg grating （FBG） technology was studied based on the current monitoring status of the highway soft ground settlement, such as the low degree of automation, the unsatisfied accuracy of the device, the slow data transmission and the greater measurement errors. The development of the long range optical fiber displacement sensor as well as its burying techniques which are suitable for soft ground settlement monitoring was analyzed. Both of them were applied in Dechang Highway D10 subject. The results show that the long-range optical fiber displacement sensor is able to meet the requirements of the soft ground monitoring. And data can be accurately monitored by means of real-time or on-line continuously.

关 键 词：BRAGG光栅 软基监测 大量程位移计 埋设工艺 

分 类 号：TU443[建筑科学—岩土工程]