摘要
以一座正在建设中的三跨两塔混凝土自锚式悬索桥为工程背景,采用桥梁通用分析软件建立全桥三维有限元模型,通过改变加劲梁自重、主缆弹模、温度场及收缩徐变等敏感性参数,主要对比分析混凝土自锚式悬索桥的结构线形与内力的变化情况。得出结论,加劲梁自重、主缆弹模、温度场、收缩徐变的变化对混凝土自锚式悬索桥的结构线形与内力影响较大,吊杆弹模、加劲梁弹模、桥塔弹模以及主缆、吊杆自重的变化对结构线形与内力的影响较小,可为同类桥梁结构的设计、施工提供一些参考。
Taking a three-span and two-tower concrete self-anchored suspension bridge under construction as the engineering background,this paper uses the general analysis software of the bridge to establish a three-dimensional finite element model of the whole bridge,and mainly compares and analyzes the changes of structural alignment and internal force of the concrete self-anchored suspension bridge by changing the sensitive parameters such as the self-weight of the stiffener beam,the elastic mold of the main cable,the temperature field and the shrinkage creep.It is concluded that the changes of stiffener beam,main cable elastic mold,temperature field and shrinkage creep have a great influence on the structural alignment and internal force of concrete self-anchored suspension bridge,and the changes of boom elastic mold,stiffener beam elastic mold,bridge tower elastic mold and main cable and boom self-weight have little influence on the structural alignment and internal force,which can provide some references for the design and construction of similar bridge structures.
作者
陆久飞
李春生
许鹏
矣涛
龚旺
LU Jiufei;LI Chunsheng;XU Peng;YI Tao;GONG Wang(Broadvision Engineering Consultants Co.,Ltd.,Kunming 650041,China;Yunnan Tongqu Engineering Testing Co.,Ltd.,Kunming 650041,China)
出处
《建筑结构》
北大核心
2023年第S01期1737-1741,共5页
Building Structure
关键词
混凝土自锚式悬索桥
敏感性
参数
线形
内力
concrete self-anchored suspension bridge
sensibility
parameter
linear
endogenous force
