摘要
以道庆洲大桥南接线工程为背景,对深水区大跨度公轨两用现浇主梁的施工技术进行研究,设计了基于“铰结”钢斜撑和贝雷梁的“二次竖转”支撑体系,优化了施工工序,既解决了钢斜撑与深水围堰空间碰撞问题,又能保证双层现浇主梁施工时共用1套支撑,并通过有限元法进行空间结构分析,为双层主梁合理有序施工提供了技术保障,使支架材料等资源配置合理。工程实践表明,所设计的现浇支架各项技术指标满足规范要求,确保了工程安全高效实施。
Based on the South Connection Project of Daoqingzhou Bridge in Fujian Province,the construction technology of large-span road-track dual purpose cast-in-place girder in deep water area is studied.The“secondary vertical rotation”support system based on“hinged”steel diagonal brace and bailey beam is designed,and the construction process is optimized.It not only solves the problem of spatial collision between steel diagonal brace and deep water cofferdam,but also ensures that a set of support is shared during the construction of double-layer cast-in-place girder.The spatial structure analysis is carried out by using the finite element method,which provides technical support for the reasonable and orderly construction of double-layer girder and makes the allocation of support materials reasonable.The engineering practice shows that the technical indices of the designed cast-in-place bracket meet the requirements of the specification,which ensures the safe and efficient implementation of the project.
作者
强伟亮
高璞
周俊龙
陶波
闫川
QIANG Weiliang;GAO Pu;ZHOU Junlong;TAO Bo;YAN Chuan(China Construction Sixth Engineering Division Co.,Ltd.,Tianjin 300171,China;Central Research Institute of Building and Construction Co.,Ltd.of MCC,Beijing 100088,China)
出处
《施工技术（中英文）》
CAS
2023年第7期101-105,127,共6页
Construction Technology
基金
中建股份科技研发课题:大跨度缆索承重桥梁上部结构施工技术研究(CSCEC-2021-Z-30)。
关键词
桥梁工程
公轨两用
二次竖转
现浇支架
贝雷梁
施工技术
bridges
road-track dual-purpose
secondary vertical rotation
cast-in-place support
Bailey beam
construction
