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A platform for research: civil engineering, architecture and urbanism
Variable-height steel-concrete composite beam pushing system and construction method
The invention relates to a variable-height steel-concrete composite beam pushing system and a construction method, and the system comprises a supporting device which is used for supporting a main beam and providing a platform for pushing the main beam to advance; the pushing device is arranged on the supporting device and used for pushing the main beam; the balancing device comprises a cable bent tower which is used for being arranged at the top of the main beam and located in the middle of the main beam in the longitudinal bridge direction; and the at least two inhaul cables are used for connecting the cable bent tower and the two ends of the main beam and overcoming the gravity of the end part of the main beam. Through the arrangement of the balancing device and the cooperation of the cable bent tower and the inhaul cable, the gravity borne by the main beam cantilever is transmitted to the cable bent tower through the inhaul cable, the cable force of the main beam cantilever meets the design requirement by tensioning the inhaul cable, the gravity of the main beam cantilever is borne by the inhaul cable and the cable bent tower, and therefore the deformation amount of the main beam cantilever caused by the gravity is reduced; the problems that when a conventional incremental launching method is adopted for variable-height section steel box girder spanning construction, a large cantilever girder is small in rigidity and large in deformation are solved.
本申请涉及一种变高钢混组合梁顶推系统及施工方法，系统包括：支撑装置，其用于支撑主梁并为主梁顶推前进提供平台；顶推装置，其设于所述支撑装置上并用于顶推主梁；平衡装置，其包括：索塔，其用于设在主梁顶部，并位于主梁沿纵桥向的中部；至少两根拉索，其用于连接所述索塔和主梁两端，并用于克服主梁端部的重力。本申请通过平衡装置的设置，索塔和拉索配合，使主梁悬臂受到的重力通过拉索传递到索塔，通过张拉拉索使其索力达到设计要求，使主梁悬臂重力由拉索和索塔承受，从而减小主梁悬臂因重力而发生的变形量，即解决了采用常规的顶推法进行变高截面钢箱梁跨越施工时，大悬臂主梁刚度小、变形大的问题。
Variable-height steel-concrete composite beam pushing system and construction method
The invention relates to a variable-height steel-concrete composite beam pushing system and a construction method, and the system comprises a supporting device which is used for supporting a main beam and providing a platform for pushing the main beam to advance; the pushing device is arranged on the supporting device and used for pushing the main beam; the balancing device comprises a cable bent tower which is used for being arranged at the top of the main beam and located in the middle of the main beam in the longitudinal bridge direction; and the at least two inhaul cables are used for connecting the cable bent tower and the two ends of the main beam and overcoming the gravity of the end part of the main beam. Through the arrangement of the balancing device and the cooperation of the cable bent tower and the inhaul cable, the gravity borne by the main beam cantilever is transmitted to the cable bent tower through the inhaul cable, the cable force of the main beam cantilever meets the design requirement by tensioning the inhaul cable, the gravity of the main beam cantilever is borne by the inhaul cable and the cable bent tower, and therefore the deformation amount of the main beam cantilever caused by the gravity is reduced; the problems that when a conventional incremental launching method is adopted for variable-height section steel box girder spanning construction, a large cantilever girder is small in rigidity and large in deformation are solved.
本申请涉及一种变高钢混组合梁顶推系统及施工方法，系统包括：支撑装置，其用于支撑主梁并为主梁顶推前进提供平台；顶推装置，其设于所述支撑装置上并用于顶推主梁；平衡装置，其包括：索塔，其用于设在主梁顶部，并位于主梁沿纵桥向的中部；至少两根拉索，其用于连接所述索塔和主梁两端，并用于克服主梁端部的重力。本申请通过平衡装置的设置，索塔和拉索配合，使主梁悬臂受到的重力通过拉索传递到索塔，通过张拉拉索使其索力达到设计要求，使主梁悬臂重力由拉索和索塔承受，从而减小主梁悬臂因重力而发生的变形量，即解决了采用常规的顶推法进行变高截面钢箱梁跨越施工时，大悬臂主梁刚度小、变形大的问题。
Variable-height steel-concrete composite beam pushing system and construction method
一种变高钢混组合梁顶推系统及施工方法
WU JIE (author) / ZHANG YOUGUANG (author) / WANG WULI (author) / ZHU XIANGMING (author) / JIANG ZECHENG (author) / CHEN KAIQIAO (author) / LIU YANG (author) / GUI PENG (author) / HU JIABIN (author) / CHEN TAO (author)
2023-01-31
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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