摘要
衡量刚构与拱组合体系系杆拱桥的标准之一是查看其成桥状态下内力分布与其大小。成桥在恒、活荷载的作用下拱肋与主梁所承受的弯曲应力小且均匀,此时方能称为合理的成桥状态。关于拉索索力优化的方法和理论大多以斜拉桥为研究对象。在借鉴斜拉桥索力优化的基础上,通过有约束的最小能量法,建立适用于吊杆索桥的优化模型以及约束的表达式,并结合工程实例来研究系杆拱桥成桥状态的吊杆索力优化。
One of the standards which measures the arch and rigid frame is to check the internal force distribution and size under the finished state. When the bending stress of the arch rib and the main girder under the action of constant and live load is small and well-distributed, the bridge can be regarded as reasonable. The method and theory of cable force optimization mainly takes cable-stayed bridge as the object of research. The cable optimization model and the constrained expression were constructed on the basis of cable-stayed bridge’s cable force optimization and constrained energy minimization method. The cable force optimization of arch bridge’s completion state was also studied with reference to engineering practices in this paper.
作者
田志昌
孙超
韩永华
赵根田
TIAN Zhichang;SUN Chao;HAN Yonghua;ZHAO Gentian(College of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;Guangdong Pingxing Expressway Co. Ltd, Guangzhou 510640, China)
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2017年第2期296-302,共7页
Journal of Railway Science and Engineering
基金
国家自然科学基金资助项目(51268042)
关键词
系杆拱桥
索力优化
成桥状态
有约束的最小能量法
tied arch bridge
cable tension
bridge completion
the constrained minimum energy method
