摘要
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。
A long-termmonitoring on vibration characteristics and development of existing disease of K973 Shihuigou Bridge in Qinghai-Tibet Railway was conducted to understand the performance of bridges in service under the train live load in the severe environment.This 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 Platformwere 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.
出处
《铁道建筑》
北大核心
2015年第1期19-22,共4页
Railway Engineering
关键词
青藏铁路
桥梁
监测
Qinghai-Tibet Railway
Bridge
Monitor
