摘要
基于UL列式的虚功增量方程,根据索的物理及几何特性,推导出了适用于悬索桥缆索几何非线性分析的两节点悬链线索单元。在此基础上,提出了一种确定自锚式悬索桥恒载状态下的结构线形及内力的迭代算法。并以佛山市平胜大桥独塔自锚式悬索桥(主跨350m)为例,对其拟定的两种施工方案分别进行了恒载状态下的结构线形及内力的计算。通过分析比较,对施工方案的可行性进行了论证。
Based on the virtual work increment equation of Updated Lagrangian formulation and physics and geometry characteristics of cable, two-node catenary cable element for the geometrical non-linear analysis of suspension bridge's main cable is developed. Furthermore, a fine iterative method of calculating the geometry and inner force of self-anchored suspension bridge with single tower under dead load is investigated. Taking Pingsheng bridge in the city of Foshan which is a single-tower self-anchored suspension bridge and which's main span is 350 m for example, the geometry and inner force under dead load of two construction methods is calculated. By comparison and analysis, the feasibilities of construction methods are demonstrated.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2005年第2期46-50,共5页
Journal of Railway Science and Engineering
基金
国家自然科学基金重大项目(59895410)
