Study on Camber Deformation and Safety Countermeasures of Shanghai-Hangzhou Passenger Dedicated Line
32 m-span simply supported structure is widely used in high-speed railway PC box girder, the creep camber of beam is particularly important in the design and construction. If the forecast for the creep deformation are not accurate, it would result in excessive deflection of beam in the construction phase and operational phases and, furthermore, badly affect the bridges security and traffic safety. For solving the camber deformation problems of 32 m PC box girder in Shanghai-Hang Zhou Line, seven representative beams were monitored and the observations were analyzed. Combining with prediction formulas in four criterions at home and abroad, MIDAS/Civil program was adopted to calculate the creep coefficient and then compared the calculated result with the measured one. A new modified creep prediction model was built up according to the creep development law of Shanghai-Hang Zhou Line 32 m PC box girder. Finally, the security measures were put forward to prevent and cure the excessive camber for the benefit of the bridge safety.
Shanghai-Hangzhou Passenger Dedicated Line 32 m span simply supported box girder camber deformation creep safety countermeasures
LUO Junli XU Zhisheng FAN Chaoyuan YANG Jihao SONG Chengchao
Institute of Disaster Prevention Science & Safe Technology, Central South University, Changsha 41007 China Railway Tenth Group Co.Ltd., Jinan 250001, Shandong, China
国际会议
The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)
杭州
英文
2052-2056
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）