摘要
结合郑济高速铁路22联3×56 m胶拼连续梁的建造过程,对大规模全胶接节段拼装梁施工中预制施工方案及线形控制、提升和悬挂节段施工、0号节段三维空间位置调整及锚固和节段拼装等关键建造技术进行了研究。结果表明,(1)大悬臂状态节段重量体系转换时,吊杆力均小于节段重量的3%,0A和1A节段间的胶结缝将首先开裂,胶结缝的质量受吊杆力影响很大;(2)为精确控制吊杆力,形成了穿心油顶、压力环传感器和监测系统结合的吊杆力监测创新技术,以提高体系转换的实施质量。
Combined with 22-span 3×56 m glued continuous girder on the Zhengzhou-Jinan High-speed Railway,the critical construction technologies for large-scale fully glued segmental girders were studied,including prefabrication construction schemes,alignment control,segment lifting and suspension,3D spatial positioning and anchoring of No.0 segment,and segment assembly.The results indicate that:(1)During the system transformation of segments under large cantilever conditions,the hanger forces remain below 3%of the segment weight,with the glued joint between 0A and 1A being the first to crack,highlighting the significant influence of hanger forces on joint quality.(2)To precisely control hanger forces,an innovative monitoring technique integrating center-hole jacks,pressure ring sensors,and a monitoring system was developed,significantly improving the implementation quality of system transformation.
作者
王胜杰
李艳
周岳武
张少朋
王宗丰
岳超杰
WANG Shengjie;LI Yan;ZHUO Yuewu;ZHANG Shaopeng;WANG Zongfeng;YUE Chaojie(China Railway Design Corporation,Tianjin 300308,China;Shandong Luqiao Group Co.,Ltd.,Jinan 250014,China)
出处
《高速铁路技术》
2025年第3期107-112,124,共7页
High Speed Railway Technology
基金
中国铁路设计集团有限公司科技开发课题(2024BTJ017)。
关键词
全胶接
大规模
预制施工
拼装施工
体系转换
吊杆力监测
fully glued
large-scale
prefabrication construction
segmental assembly
system transformation
hanger force monitoring
