摘要
自锚式悬索桥施工张拉过程中吊索的欠、超张拉现象不可避免都会出现。吊索的欠、超张拉对自锚式悬索桥成桥索力情况都会产生一定程度的影响。因此,在施工和控制中必须对吊索的欠、超张拉程度对全桥成桥索力影响情况有个充分的了解,以便在施工过程中能及时采用措施或改变张拉方案。从而确保成桥索力的均匀和成桥线形的合理。该文通过某一工程实例的数值计算分析,初步探讨了吊索的欠、超张拉对桥梁成桥索力的影响情况。
The less tension and ultra tension of suspension cable will occurr inevitably in the course of the tensioning construction of self-anchored suspension bridge. The less tension and ultra tension of suspension cable will produce some influence on the cable force of self-anchored suspension bridge. Therefore, it must be fully to understand the influence of less tension and ultra tension levels of the suspension cable on the cable force of the whole bridge so as to take the measure or change the tensile scheme in time in the course of construction in order to ensure the evenness of the bridge cable force and the reasonableness of the bridge alignment. The article preliminarily discusses the influence of the less and ultra tensions of suspension cable on the cable force of the completed bridge.
出处
《城市道桥与防洪》
2010年第6期122-124,共3页
Urban Roads Bridges & Flood Control
关键词
自锚式悬索桥
吊索
欠张拉
超张拉
成桥索力
数值计算
成都
self-anchored suspension bridge, suspension cable, less tension, ultra tension, cable force of completed bridge, numerical calculation, Chengdu
