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A platform for research: civil engineering, architecture and urbanism
Rigid frame system steel box girder bridge closure method
The invention relates to a rigid frame system steel box girder bridge closure method. The method comprises the steps that an opposite vertex system is installed at the cantilever end of a girder; the closure temperature and the length of a closure gap between the cantilever ends of the two main beams are determined, and when the length of the closure gap is smaller than or equal to the length of a closure section due to temperature rise, the length of the closure gap is adjusted through an opposite vertex system till the length of the closure gap meets the closure construction length of the closure gap; and the closure section is hoisted to a closure opening, closure section connection construction is conducted after the closure section and the cantilever end of the main beam are temporarily locked, and main beam closure construction is completed. The opposite jacking system is arranged at the cantilever end of the main beam, so that opposite jacking force can be applied to the closure opening, the relative distance between the two ends of the closure opening is adjusted, the defect that the length of the cantilever end of the main beam is increased due to temperature rise is overcome, matching-free closure construction of the main beam is completed, the field workload during closure construction is reduced, and the construction efficiency is improved. The speed and quality of closure construction are greatly improved, meanwhile, the temperature internal force generated when closure is conducted at the temperature higher than the design temperature is eliminated, and the stress safety of the main beam structure is guaranteed.
本申请涉及一种刚构体系钢箱梁桥合龙方法，其包括：在主梁悬臂端上安装对顶系统；确定合龙温度和两个主梁悬臂端之间的合龙口长度，当合龙口长度因温度升高小于等于合龙段长度时，利用对顶系统调整合龙口长度，直至合龙口长度满足合龙口合龙施工长度；将合龙段吊至合龙口，合龙段与主梁悬臂端临时锁定后进行合龙段连接施工，完成主梁合龙施工。本发明通过在主梁悬臂端设置对顶系统可以对合龙口施加对顶力，以调整合龙口两端的相对距离，克服因温度升高引起的主梁悬臂端长度增长，完成主梁无配切合龙施工，减少了合龙施工时的现场作业量，大大提高了合龙施工的速度和质量，同时消除了高于设计温度合龙时产生的温度内力，保障了主梁结构受力安全。
Rigid frame system steel box girder bridge closure method
The invention relates to a rigid frame system steel box girder bridge closure method. The method comprises the steps that an opposite vertex system is installed at the cantilever end of a girder; the closure temperature and the length of a closure gap between the cantilever ends of the two main beams are determined, and when the length of the closure gap is smaller than or equal to the length of a closure section due to temperature rise, the length of the closure gap is adjusted through an opposite vertex system till the length of the closure gap meets the closure construction length of the closure gap; and the closure section is hoisted to a closure opening, closure section connection construction is conducted after the closure section and the cantilever end of the main beam are temporarily locked, and main beam closure construction is completed. The opposite jacking system is arranged at the cantilever end of the main beam, so that opposite jacking force can be applied to the closure opening, the relative distance between the two ends of the closure opening is adjusted, the defect that the length of the cantilever end of the main beam is increased due to temperature rise is overcome, matching-free closure construction of the main beam is completed, the field workload during closure construction is reduced, and the construction efficiency is improved. The speed and quality of closure construction are greatly improved, meanwhile, the temperature internal force generated when closure is conducted at the temperature higher than the design temperature is eliminated, and the stress safety of the main beam structure is guaranteed.
本申请涉及一种刚构体系钢箱梁桥合龙方法，其包括：在主梁悬臂端上安装对顶系统；确定合龙温度和两个主梁悬臂端之间的合龙口长度，当合龙口长度因温度升高小于等于合龙段长度时，利用对顶系统调整合龙口长度，直至合龙口长度满足合龙口合龙施工长度；将合龙段吊至合龙口，合龙段与主梁悬臂端临时锁定后进行合龙段连接施工，完成主梁合龙施工。本发明通过在主梁悬臂端设置对顶系统可以对合龙口施加对顶力，以调整合龙口两端的相对距离，克服因温度升高引起的主梁悬臂端长度增长，完成主梁无配切合龙施工，减少了合龙施工时的现场作业量，大大提高了合龙施工的速度和质量，同时消除了高于设计温度合龙时产生的温度内力，保障了主梁结构受力安全。
Rigid frame system steel box girder bridge closure method
一种刚构体系钢箱梁桥合龙方法
KANG XIN (author) / QIU PAN (author) / LI YONGQI (author) / HUANG HUI (author) / TANG TIANMING (author) / LI ZHUOWEI (author) / CHENG ZHENGXING (author) / DENG YONGFENG (author) / LEE IN-RIM (author) / AI BILIN (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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