A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steel truss arch bridge erecting method
The invention relates to a method for erecting a steel truss arch bridge. The method comprises the following steps: synchronously erecting a truss arch and advancing a main beam to a certain length; the main beam continues to be erected to advance to a certain length, and a temporary main beam inhaul cable is tensioned between the main beam and the truss arch; main beams are erected to a closure opening, the state of the closure opening is adjusted through jacking and falling of side fulcrums, and main beam closure is completed; and the truss arch is erected to the closure opening, and truss arch closure is completed. The independent main beam cantilever is erected, the weight of the cantilever structure is smaller than that of an arched beam synchronization scheme, and the side span weight arranged for ensuring stable overturning can be reduced; after being erected to the position of the closure opening, the state of the closure opening can be conveniently adjusted through edge supporting point jacking; after main beam closure is completed, the problems that in a truss arch first closure and main beam second closure erecting method in the related technology, the main beam closure opening state is not sensitive to buckling cable force, side fulcrum jacking and falling and sling force, and it is difficult to match the elevation and mileage of the two sides of the main beam closure opening to the closure state through effective measures can be effectively solved.
本申请涉及一种钢桁拱桥架设方法，其包括：同步架设桁拱和主梁前进至一定长度；继续架设主梁前进至一定长度，并在主梁与桁拱之间张拉主梁临时拉索；架设主梁至合龙口，通过边支点顶落调整合龙口状态，完成主梁合龙；架设桁拱至合龙口，完成桁拱合龙。单独主梁悬臂架设，悬臂结构重量比拱梁同步方案小，可减小为保证倾覆稳定而布置的边跨压重重量；架设至合龙口位置后通过边支点顶落可以方便调整合龙口状态；完成主梁合龙后，能有效解决相关技术中桁拱先合龙，主梁后合龙架设方法，存在主梁合龙口状态对扣索索力、边支点顶落、吊索索力不敏感，很难通过有效措施将主梁合龙口两侧的高程、里程都匹配至可合龙状态的问题。
Steel truss arch bridge erecting method
The invention relates to a method for erecting a steel truss arch bridge. The method comprises the following steps: synchronously erecting a truss arch and advancing a main beam to a certain length; the main beam continues to be erected to advance to a certain length, and a temporary main beam inhaul cable is tensioned between the main beam and the truss arch; main beams are erected to a closure opening, the state of the closure opening is adjusted through jacking and falling of side fulcrums, and main beam closure is completed; and the truss arch is erected to the closure opening, and truss arch closure is completed. The independent main beam cantilever is erected, the weight of the cantilever structure is smaller than that of an arched beam synchronization scheme, and the side span weight arranged for ensuring stable overturning can be reduced; after being erected to the position of the closure opening, the state of the closure opening can be conveniently adjusted through edge supporting point jacking; after main beam closure is completed, the problems that in a truss arch first closure and main beam second closure erecting method in the related technology, the main beam closure opening state is not sensitive to buckling cable force, side fulcrum jacking and falling and sling force, and it is difficult to match the elevation and mileage of the two sides of the main beam closure opening to the closure state through effective measures can be effectively solved.
本申请涉及一种钢桁拱桥架设方法，其包括：同步架设桁拱和主梁前进至一定长度；继续架设主梁前进至一定长度，并在主梁与桁拱之间张拉主梁临时拉索；架设主梁至合龙口，通过边支点顶落调整合龙口状态，完成主梁合龙；架设桁拱至合龙口，完成桁拱合龙。单独主梁悬臂架设，悬臂结构重量比拱梁同步方案小，可减小为保证倾覆稳定而布置的边跨压重重量；架设至合龙口位置后通过边支点顶落可以方便调整合龙口状态；完成主梁合龙后，能有效解决相关技术中桁拱先合龙，主梁后合龙架设方法，存在主梁合龙口状态对扣索索力、边支点顶落、吊索索力不敏感，很难通过有效措施将主梁合龙口两侧的高程、里程都匹配至可合龙状态的问题。
Steel truss arch bridge erecting method
一种钢桁拱桥架设方法
LI SHAOJUN (author) / PENG ZHENHUA (author) / ZHANG RUI (author) / XU WEI (author) / ZHENG QINGGANG (author) / FU ZHANGONG (author) / LI YULONG (author) / FU LANLAN (author)
2024-08-23
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Old timber truss bridge used for erecting steel arch
| Engineering Index Backfile | 1926
| European Patent Office | 2024
Erecting the Sydney harbor steel-arch bridge
Engineering Index Backfile | 1930