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A platform for research: civil engineering, architecture and urbanism
Dragging construction method of steel truss girder non-sudden-change conversion stress dragging system
The invention belongs to the technical field of dragging construction of steel truss girder crossing obstacles, and particularly relates to a dragging construction method of a steel truss girder non-sudden-change conversion stress dragging system. A fixed sliding block is mounted above a first pier column starting from a cantilever section of the steel truss girder and serves as a fixed stress fulcrum in the dragging process; the pressure of the first movable sliding block starting from the fixed sliding block on the sliding guide beam is slowly reduced along with the dragging process, when the height difference between the top face of the sliding guide beam of the downhill section of the sliding guide beam and the beam bottom of the steel truss beam is larger than the height of the movable sliding block, the pressure of the movable sliding block on the sliding guide beam disappears thoroughly, and the movable sliding block falls on the sliding guide beam after being cut in front of the first pier column and then is recycled. When the method is adopted to drag the steel truss girder, in the advancing process, the stress joints of the movable sliding blocks are sequentially and slowly separated from the sliding guide beam, stress conversion of the joints of the steel truss girder and the cantilever guide beam is smooth, the steel truss girder and the cantilever guide beam are prevented from shaking, the deflection is suddenly increased, the movable sliding blocks are cut to move to a rear safety area from the position above a business line, and the safety risk is reduced.
本发明属于钢桁梁跨越障碍物拖拉施工技术领域，具体涉及一种钢桁梁无突变转换受力拖拉体系的拖拉施工方法；在从钢桁梁的悬臂段起的第1墩柱上方安装固定滑块做为拖拉过程中的固定受力支点；从固定滑块起的第一个活动滑块随着拖拉进程对滑导梁的压力缓慢减少，在滑导梁的下坡段滑导梁顶面与钢桁梁梁底高差大于活动滑块高度时，活动滑块对滑导梁的压力彻底消失，并在第1墩柱前完成切割后落于滑导梁上，再进行回收；采用本方法拖拉钢桁梁，在前进过程中活动滑块受力节点依次缓慢与滑导梁分离，钢桁梁及悬臂导梁节点受力转换平滑，钢桁梁及悬臂导梁避免了颤抖、挠度突然增大的现象，切割活动滑块从营业线上方移至后方安全区域，降低了安全风险。
Dragging construction method of steel truss girder non-sudden-change conversion stress dragging system
The invention belongs to the technical field of dragging construction of steel truss girder crossing obstacles, and particularly relates to a dragging construction method of a steel truss girder non-sudden-change conversion stress dragging system. A fixed sliding block is mounted above a first pier column starting from a cantilever section of the steel truss girder and serves as a fixed stress fulcrum in the dragging process; the pressure of the first movable sliding block starting from the fixed sliding block on the sliding guide beam is slowly reduced along with the dragging process, when the height difference between the top face of the sliding guide beam of the downhill section of the sliding guide beam and the beam bottom of the steel truss beam is larger than the height of the movable sliding block, the pressure of the movable sliding block on the sliding guide beam disappears thoroughly, and the movable sliding block falls on the sliding guide beam after being cut in front of the first pier column and then is recycled. When the method is adopted to drag the steel truss girder, in the advancing process, the stress joints of the movable sliding blocks are sequentially and slowly separated from the sliding guide beam, stress conversion of the joints of the steel truss girder and the cantilever guide beam is smooth, the steel truss girder and the cantilever guide beam are prevented from shaking, the deflection is suddenly increased, the movable sliding blocks are cut to move to a rear safety area from the position above a business line, and the safety risk is reduced.
本发明属于钢桁梁跨越障碍物拖拉施工技术领域，具体涉及一种钢桁梁无突变转换受力拖拉体系的拖拉施工方法；在从钢桁梁的悬臂段起的第1墩柱上方安装固定滑块做为拖拉过程中的固定受力支点；从固定滑块起的第一个活动滑块随着拖拉进程对滑导梁的压力缓慢减少，在滑导梁的下坡段滑导梁顶面与钢桁梁梁底高差大于活动滑块高度时，活动滑块对滑导梁的压力彻底消失，并在第1墩柱前完成切割后落于滑导梁上，再进行回收；采用本方法拖拉钢桁梁，在前进过程中活动滑块受力节点依次缓慢与滑导梁分离，钢桁梁及悬臂导梁节点受力转换平滑，钢桁梁及悬臂导梁避免了颤抖、挠度突然增大的现象，切割活动滑块从营业线上方移至后方安全区域，降低了安全风险。
Dragging construction method of steel truss girder non-sudden-change conversion stress dragging system
钢桁梁无突变转换受力拖拉体系的拖拉施工方法
AN MAOQIANG (author) / HE YANG (author) / TIAN HAIBIN (author) / ZHAO ZHISHUAI (author) / TANG ZHIHUA (author) / DU TIEFENG (author)
2023-03-14
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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