A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of highway reconstruction and extension overline continuous beam bridge dismantling system
The invention relates to a construction method of a highway reconstruction and extension overline continuous beam bridge dismantling system, which is characterized in that a rigid support anchoring structure is formed at a support by arranging anchor bolts, pouring micro-expansion concrete, supporting profile steel and the like, a main beam and a cover beam are anchored into a whole, and a movable supporting structure is converted into a rigid structure; the stability before the main beam is dismounted is improved; according to the main beam shaping movable supporting frame, auxiliary supporting can be conducted on the main beam which is broken and is in a cantilever state, and the situation that the main beam is overall overturned and large hogging moment is generated at the position of a fulcrum is avoided; the pier column is supported and fixed through the bending-resistant support, the structure is simple and reliable, and the risk that the pier column is bent and broken in the main beam dismantling process is effectively avoided. The dismantling operation adopts a segmented operation and segmented hoisting mode, upward force is applied to the to-be-hoisted segment in advance through the protective hoisting support, impact force generated by sudden falling during segment cutting is avoided, and the safety of field operation is improved.
本发明涉及一种公路改扩建跨线连续梁桥拆除体系的施工方法，支座处通过设置锚固螺栓、浇筑微膨胀混凝土、支撑型钢等形成支座刚性锚固结构，将主梁与盖梁锚固成一个整体，将活动支撑结构转变成刚性结构，提升了主梁拆除前的稳定性；提出的主梁定型化移动支撑架，可对断开处于悬臂状态的主梁进行辅助支撑，避免主梁整体倾覆及支点处产生较大的负弯矩；墩柱采用抗弯支架进行支撑固定，结构简单可靠，有效地避免主梁拆除过程中墩柱出现弯折、断裂的风险；拆除作业采取分段作业、分段吊装的方式，待吊装节段通过防护吊装支架预先施加向上的力，避免节段切割时突然坠落产生的冲击力，提升了现场作业的安全性。
Construction method of highway reconstruction and extension overline continuous beam bridge dismantling system
The invention relates to a construction method of a highway reconstruction and extension overline continuous beam bridge dismantling system, which is characterized in that a rigid support anchoring structure is formed at a support by arranging anchor bolts, pouring micro-expansion concrete, supporting profile steel and the like, a main beam and a cover beam are anchored into a whole, and a movable supporting structure is converted into a rigid structure; the stability before the main beam is dismounted is improved; according to the main beam shaping movable supporting frame, auxiliary supporting can be conducted on the main beam which is broken and is in a cantilever state, and the situation that the main beam is overall overturned and large hogging moment is generated at the position of a fulcrum is avoided; the pier column is supported and fixed through the bending-resistant support, the structure is simple and reliable, and the risk that the pier column is bent and broken in the main beam dismantling process is effectively avoided. The dismantling operation adopts a segmented operation and segmented hoisting mode, upward force is applied to the to-be-hoisted segment in advance through the protective hoisting support, impact force generated by sudden falling during segment cutting is avoided, and the safety of field operation is improved.
本发明涉及一种公路改扩建跨线连续梁桥拆除体系的施工方法，支座处通过设置锚固螺栓、浇筑微膨胀混凝土、支撑型钢等形成支座刚性锚固结构，将主梁与盖梁锚固成一个整体，将活动支撑结构转变成刚性结构，提升了主梁拆除前的稳定性；提出的主梁定型化移动支撑架，可对断开处于悬臂状态的主梁进行辅助支撑，避免主梁整体倾覆及支点处产生较大的负弯矩；墩柱采用抗弯支架进行支撑固定，结构简单可靠，有效地避免主梁拆除过程中墩柱出现弯折、断裂的风险；拆除作业采取分段作业、分段吊装的方式，待吊装节段通过防护吊装支架预先施加向上的力，避免节段切割时突然坠落产生的冲击力，提升了现场作业的安全性。
Construction method of highway reconstruction and extension overline continuous beam bridge dismantling system
公路改扩建跨线连续梁桥拆除体系的施工方法
PENG LEI (author) / WU FEI (author) / YIN RUIYANG (author) / LYU MENG (author)
2024-03-01
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Dismantling method of expressway overline farming bridge
| European Patent Office | 2022
Main bridge continuous beam dismantling construction method
| European Patent Office | 2024
Overall carrying dismantling method for overline suspender arch bridge
| European Patent Office | 2021
Highway bridge broadening reconstruction project overline protection device
| European Patent Office | 2022
Overline protection structure for highway bridge broadening reconstruction project
| European Patent Office | 2023