一种用于拱桥的斜拉扣挂施工方法及临时合龙装置
By hinged connection and removal of the stay cables at the arch crown segment, the problem of uneven axial force distribution in the arch ring during cable hoisting and stay cable fastening construction was solved, achieving an axial force close to the ideal design state and improving construction efficiency and structural stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGXI ROAD & BRIDGE ENG GRP CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-17
AI Technical Summary
The existing cable hoisting and inclined cable-stayed construction method results in a large deviation between the axial force distribution of the arch ring after the bridge is completed and the ideal design state, which affects the durability of the arch ring structure.
The arch ring is temporarily closed at the top segment using a hinged connection, and the stay cables at 1/4 of the arch ring span are removed. By utilizing the characteristic that the hinged joint does not transmit bending moment, excess constraint force is released, allowing the internal forces of the arch ring to redistribute, achieving a construction effect close to that of the scaffolding method.
This reduces the influence of initial stress on each segment of the arch ring, excluding the effect of gravity, and the axial force distribution is close to the effect of the support method construction, thus improving construction efficiency and structural stability.
Smart Images
Figure CN120700802B_ABST