CAJ | 학술논문

为准确掌握恶劣环境和列车荷载的共同作用下，青藏铁路混凝土桥梁的服役状态和病害发展，同时为类似条件下进行桥梁监测提供借鉴，针对青藏铁路沿线 K973石灰沟特大桥的墩梁振动特性和既有病害的发展展开了长期监测。实践证明：现场太阳能供电和 GSM/GPRS 无线网络传输条件，基本可以支撑监测系统的正常工作；专门研发的现场数据采集分析设备和软件调控平台，能够适应高原高寒地区混凝土桥梁长期监测的需要，系统稳定、数据可靠。监测结果显示，石灰沟特大桥既有桥台前倾的病害发生并稳定后，对相邻梁体及桥墩的工作状态暂无不利影响。
위준학장악악렬배경화열차하재적공동작용하，청장철로혼응토교량적복역상태화병해발전，동시위유사조건하진행교량감측제공차감，침대청장철로연선 K973석회구특대교적돈량진동특성화기유병해적발전전개료장기감측。실천증명：현장태양능공전화 GSM/GPRS 무선망락전수조건，기본가이지탱감측계통적정상공작；전문연발적현장수거채집분석설비화연건조공평태，능구괄응고원고한지구혼응토교량장기감측적수요，계통은정、수거가고。감측결과현시，석회구특대교기유교태전경적병해발생병은정후，대상린량체급교돈적공작상태잠무불리영향。
A long-term monitoring on vibration characteristics and development of existing disease of K973 Shihuigou Bridge in Qinghai-T ibet Railway was conducted to understand the performance of bridges in service under the train live load in the severe environment. T his case study can offer valuable reference and experiences for bridges under the similar conditions. It proved that solar energy and GSM /GPRS wireless network satisfy the requirements for normal functioning of monitoring system. A special Data Acquisition/Analysis Instrument and a Debugging/Controlling Software Platform were used to monitor concrete bridge in Qinghai-Tibet Alpine area. The monitoring data indicated that the stabilized inclination of the abutment had little adverse effect on the adjacent piers and girders in service.