变参数两跨四车道桥梁结构设计与分析
DESIGN AND ANALYSIS OF TWO-SPAN FOUR-LANE BRIDGE STRUCTURE WITH VARIABLE PARAMETERS
李邦桐 1李波 1孙树宏 1艾心荧 1罗振源1
作者信息
- 1. 东莞理工学院,生态环境与建筑工程学院,广东东莞 523808
- 折叠
摘要
为探究两跨四车道桥梁在受到大型船舶撞击时的受力性能,结合第十六届全国大学生结构设计竞赛广东省分区赛赛题《撞击荷载下变参数两跨四车道桥梁结构设计与制作》要求,通过Midas Civil对承受移动荷载和撞击荷载的桥梁结构模型进行数值模拟计算与结构优化设计,最后通过加载试验对仿真计算结果进行验证.研究表明模型节点受力集中且制作复杂,桥梁三级加载时极易出现节点脱落与变形过大导致弦被压断,利用浸润胶水后的竹粉包裹或竹皮缠绕节点可起到较好的加强作用;将主要受力杆件截面设计成T字形,可增加杆件间的接触面积,有效防止加载车道不同引发桥梁偏载时的节点脱落问题.
Abstract
With the requirements of the 16th National Structural Design Competition for College Students in Guang-dong province,the structural design and production of a two-span four-lane bridge with variable parameters under impact load are numerically simulated by Midas/Civil software to determine the structural optimization design,the re-sults from are verified by the experimental results.The results show that the string crushes during the three-stage loading of the bridge,resulting from falling off and deforming in the nodes that are stressed and complicated to be made.The nodes are strengthened by wrapping with bamboo skin or glue wetted bamboo powder.The section of the main bearing member is designed into T shape,which increase the contact area between the member and effectively prevent the problem of the joint falling off when the bridge is biased by different loading lanes.
关键词
大型船舶/移动荷载/撞击荷载/两跨四车道/桥梁结构Key words
large ships/moving load/impact load/two spans four lanes/bridge structure引用本文复制引用
基金项目
东莞理工学院质量工程项目(202102001)
土木工程施工教研室(202202006)
2021年东莞理工学院课程思政示范项目(20222503)
东莞理工学院2022年劳动教育示范项目(221120015)
出版年
2024
NETL
NSTL
万方数据