上下保通条件下跨既有高速桥梁拆除施工工法
By employing construction methods such as erecting protective scaffolding, traffic diversion, and mechanical segmented demolition during the demolition of existing highway bridges, the interference and environmental impact of road closure blasting and mechanical demolition on the operation of existing highways were resolved. This approach achieved safe and efficient bridge demolition and is suitable for projects with urgent expansion and renovation needs but challenging organizational structures for maintaining traffic flow.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY 23RD BUREAU GRP 4TH ENG CO LTD
- Filing Date
- 2023-11-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing road closure blasting and mechanical demolition methods have problems such as significant disruption to the operation of existing highways, long periods of road closure for overpasses, and significant impact on the surrounding environment when demolishing existing highway bridges.
The construction method for demolishing existing highway bridges under the condition of maintaining traffic flow on both sides is adopted, including the erection of protective scaffolding, traffic diversion and mechanical demolition, to ensure the safe operation of the existing highway and the overpass during the bridge demolition process. A traffic diversion method of half-width closure and half-width traffic is adopted, and mechanical equipment is used to demolish the bridge in sections.
The bridge was demolished safely and efficiently without affecting the normal operation of existing highways and overpasses, reducing construction safety risks and environmental impact, shortening construction time, reducing negative public opinion, improving construction efficiency and reducing costs.
Smart Images
Figure CN117513193B_ABST