摘要
施工监控已被广泛应用于高速铁路大跨度桥梁建设中,以沪宁城际铁路京杭大运河(75+125+75)m预应力混凝土连续梁施工监控为例,介绍线形控制和应力监控方面的关键技术和适用方法,包括预拱度设置、挂篮变形确定、基于概率分析的变形预测、传感器数据分析、温度影响分析与控制技术等,对混凝土连续梁线形控制的主要环节进行了计算分析。经过施工实践证明:监控效果理想,监控成果表明监控方法的可靠性和适用性。
Construction monitoring has been widely used in long-span bridges construction of high-speed railway.Combining with the construction monitoring of Jinghang Grand Canal（75 ＋ 125 ＋ 75）m prestressed continuous beam,it is introduced some key technologies and application methods of the deformation control and stress control,including： setting of the camber,determination of the bailey truss deformation,deformation prediction based on probability analysis,stress analysis of sensor data,analysis of temperature effect and controlling method,etc.it is done a calculation of concrete continuous beam deformation control.It is proved by construction practice that the monitoring results are satisfactory,which show the reliability and applicability of this monitoring method,which also provides a reference for similar bridge construction.
出处
《工业建筑》
CSCD
北大核心
2010年第10期26-30,40,共6页
Industrial Construction
关键词
大跨度连续梁
施工监控
悬臂施工法
概率
温度
long-span continuous beam
construction monitoring
cantilever construction method
probability
temperature
