陈得良, 缪 莉, 田仲初, 骆中林. 大跨度桥梁拱肋悬拼时扣索索力和预抬量计算[J]. 工程力学, 2007, 24(5): 132-137.
引用本文: 陈得良, 缪 莉, 田仲初, 骆中林. 大跨度桥梁拱肋悬拼时扣索索力和预抬量计算[J]. 工程力学, 2007, 24(5): 132-137.
CHEN De-liang, MIAO Li, TIAN Zhong-chu, LUO Zhong-lin. CALCULATION OF THE CABLE-STAYED FORCE AND PRE-CAMER IN THE PROCESS OF ASSEMBLING ARCH BRIDGE SEGMENTS[J]. Engineering Mechanics, 2007, 24(5): 132-137.
Citation: CHEN De-liang, MIAO Li, TIAN Zhong-chu, LUO Zhong-lin. CALCULATION OF THE CABLE-STAYED FORCE AND PRE-CAMER IN THE PROCESS OF ASSEMBLING ARCH BRIDGE SEGMENTS[J]. Engineering Mechanics, 2007, 24(5): 132-137.

大跨度桥梁拱肋悬拼时扣索索力和预抬量计算

CALCULATION OF THE CABLE-STAYED FORCE AND PRE-CAMER IN THE PROCESS OF ASSEMBLING ARCH BRIDGE SEGMENTS

  • 摘要: 扣索索力确定和标高预抬量计算是大跨度拱桥在采用无支架缆索吊装施工过程中的难点和核心问题,本文在原有的连续体弹性-刚性支承法的基础上,提出了改进的弹性-刚性支承法:即当前施工节段处的扣索模拟为刚性支承,对已施工节段的扣索模拟弹性结构,节段之间的连接考虑为转动弹簧。利用该方法可以有效地同时确定扣索索力和标高预抬量的计算,最后给出了相关工程算例予以验证。

     

    Abstract: Calculation of the cable-stayed force and Pre-camer is the difficulty and key problem in assembling a long-span arch bridge by using construction of non-bracket cable-stayed suspension. The improved elastic-rigid support method is abstained by modeled the current cable-stayed as rigidity supporting, the finished cable-stayed as elastic cable, as well as the joint of segments simulated as torsion spring. The method is able to determine the cable-stayed force and pre-camber simultaneously. The numerical results are verified by a bridge construction.

     

/

返回文章
返回