混凝土自锚式悬索桥结构内力分析

注意：本论文已在《哈尔滨工业大学学报》2003,35(5):625-627发表
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张哲,石　磊,刘春城,黄才良
(大连理工大学桥梁研究所,辽宁大连 116024)

摘 要: 为研究混凝土自锚式悬索桥的结构受力特征以及与地锚式悬索桥的差别.通过计算实例,分析比较混 凝土自锚式悬索桥结构的力学特性,研究其拱度、矢跨比变化时引起的内力变化规律,混凝土收缩、徐变对内力影响的规律.对于中小跨度的自锚式悬索桥来讲,除了主梁的轴力偏大以外,结构的其余内力与地锚式悬索桥的差别不是很大,差值在10%以内.拱度和混凝土的收缩、徐变的影响比较明显.与相应的水平加劲梁和不考虑收缩、徐变影响的计算结果比较,差值均在20%以上.弹性理论适合于中小跨度的自锚式悬索桥的设计和计算.
关键词: 混凝土;自锚式悬索桥;地锚式悬索桥;结构分析

Analysis of Concrete Self-anchored Suspension Bridge

ZHANG Zhe SHI Lei LIU Chun-cheng HUANG Cai-liang
( Bridge Institute of Dalian University of Technology, Liaoning ,Dalian,116024,China)

Abstract:The mechanic performance of concrete self-anchored suspension bridge and the contrast with the earth-anchored suspension bridge are researched in this paper. The variational law of concrete self-anchored suspension bridge’s internal force is analyzed when the camber and the rise-span ratio are changed by the computed results, and the law of the internal force affected by creep is also analyzed. The main difference between the earth-anchored suspension bridge and the self-ahchored suspension bridge is the axial force of main girder. Otherwise, there is no less than 10% difference in all other internal force between the two types of bridges. The effect of arch degree, creep and shrink of concrete is very distinct. Ignoring the effect of these factors, the comparison would arrive at a significant deviation of no less than 20%. Elastic theory is applicable to the design and calculation of medium-span self-anchored suspension bridges.
Key words: concrete, self-anchored suspension bridge, suspension bridge, construct analysis

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1、压弯耦合效应下自锚式悬索桥自由振动研究

2、两级模糊优选模型及非结构性模糊决策理论在桥梁方案比选中的应用

3、虚拟激励法在自锚式悬索桥竖向地震反应分析中的应用

4、延吉市布尔哈通河局子街自锚式混凝土悬索桥设计

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