摘要
随着钢引桥跨度的不断增大,为了减小钢桥自重、节省投资,采用非对称断面钢桁梁桥结构型式。非对称断面钢桁梁桥由于设置悬臂侧而成为偏心结构,吊装时需合理设置吊点位置。本文从设计角度提出了一种新的吊点布置方法——将吊点布置于横梁处,并针对新方案进行空间结构计算,在保证钢桥结构安全的前提下,为施工提供不同的吊装选择。
With the increment of span of steel bridge adopted to reduce the dead weight and cost of steel approach, steel truss bridge with asymmetric section is bridge. The steel truss bridge with asymmetric section becomes eccentric structure because it is set at the side of cantilever. The suspending points need to be set appropriately. A new layout of suspending points is proposed from the design aspect, i.e. the arrangement of suspending points on cross beam. The new plan is checked by calculating space structure. Different options may be applied in the lift and assembly operation subject to the structural safety of steel bridge.
作者
杨艳静
韩广兴
赵娟
Yang Yanjing Han Guangxing Zhao Juan(CCCC First Harbor Consultants Co., Ltd., Tianjin 300222, Chin)
出处
《港工技术》
2017年第2期79-82,共4页
Port Engineering Technology
关键词
大跨度全焊钢桁梁桥
非对称断面
整体吊装
吊点布置
fully welded steel truss bridge with long-span
asymmetric section
integral lift and assembly
layout of suspending points