摘要
武汉市某主干路桥梁因景观需求,采用大悬臂盖梁结构。大悬臂盖梁通常为深受弯构件,内部体系受力复杂,且应力集中,传统的梁单元有限元模型对此类盖梁的模拟精度有待验证。分别建立梁单元简化模型与实体模型进行对比分析,对简化梁模型的精度进行验证。计算表明,简化模型精度达到设计要求,为类似盖梁设计计算提供参考,具有工程实践意义。
The large cantilever cover beam structure is adopted for a main road bridge in Wuhan because of the landscape demand.Large cantilever cap beams are usually deep bending members,and the internal system is complex and stress concentration.The simulation accuracy of the traditional finite element model of beam element for such cap beams needs to be verified.The simplified model of beam element is established and compared with the solid model,and the accuracy of the simplified beam model is verified.The calculation shows that the accuracy of the simplified model meets the design requirements,and provides a reference for the design and calculation of similar cap beams,which has engineering practical significance.
作者
朱洪志
占逸
张常建
ZHU Hong-zhi;ZHAN Yi;ZHANG Chang-jian(Wuhan Branch,Shanghai Municipal Engineering Design Institute (Group) CO.,Ltd.,Wuhan 430000,China;Wuhan Municipal Engineering Design & Research Institute Co.,Ltd.,Wuhan 430000,China)
出处
《中国市政工程》
2019年第5期25-27,37,102,共5页
China Municipal Engineering
关键词
大悬臂
盖梁
简化模型
实体分析
精度
large cantilever
cover beam
simplified model
entity analysis
accuracy
