高速公路转体桥T构托架现浇0#块千斤顶张拉反压技术  

Tensioning and Back Pressing Technology of Cast-in-place 0#Block Jack for T-frame Bracket of Expressway Swivel Bridge

作　　者：周信 ZHOU Xin(The Fourth Engineering Co.,Ltd.of China Railway 25th Bureau Group,Liuzhou 545007,China)

机构地区：[1]中铁二十五局集团第四工程有限公司,柳州545007

出　　处：《价值工程》2023年第10期96-99,共4页Value Engineering

摘　　要：本文结合宾南高速公路茨坪枢纽立交上跨广大铁路转体桥工程连续刚构施工过程中,高墩托架现浇0#块采用千斤顶张拉反压措施,达到常规堆载预压效果工程实例,通过托架设计验算、现场监控监测等,得出该措施能很好地满足现场安全、进度等管理目标要求。具有较好的推广使用实际意义。This article combines the continuous rigid frame construction process of the continuous rigid frame bridge project of the Ciping Junction Interchange on Binnan Expressway,in which the cast-in-situ 0#block of the high pier bracket was tensioned and backpressed with jacks,achieving the effect of conventional surcharge preloading.Through the bracket design verification,on-site monitoring,and other aspects,it is concluded that this measure can well meet the requirements of on-site safety,progress,and other management objectives.It has good practical significance for promotion and use.

关 键 词：高速公路 托架现浇 千斤顶 张拉反压 监控监测 

分 类 号：U445.3[建筑科学—桥梁与隧道工程]