装配式钢桁架桥桥跨结构设计及抗侵彻分析  

Span structure design and anti-penetration analysis of fabricated steel truss bridge

作　　者：张利[1] 李晓英[2] 张琴[1] ZHANG Li;LI Xiaoying;ZHANG Qin(College of Civil Engineering,Guang'an Vocational&Technical College,Guang’an 638000,China;School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]广安职业技术学院土木工程学院,四川广安638000 [2]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《兵器材料科学与工程》2022年第5期96-101,共6页Ordnance Material Science and Engineering

基　　金：四川省教育信息化应用与发展研究中心(JYXX18-023)。

摘　　要：为提高桥梁的安全性与稳定性,分析装配式钢桁架桥桥跨结构及抗侵彻性能。用仿真软件模拟非加强型、加强型与加强加高型结构桥跨,分析不同跨度、载荷下抗侵彻性能。结果表明:加强型与加强加高型桥跨的跨中挠度变化较小,整体刚度、抗变形力、承载力均较强;加强型桥跨的侵彻深度、成坑直径均低于非加强型桥跨,可提升弹体阻力、缩短弹体移动时间,较好吸收能量,弹道极限速度高,为201 m/s;综合分析,加强型桥跨的抗侵彻性能最好。In order to improve the safety and stability of bridge,the span structural design and anti penetration performance of the fabricated steel truss bridge span were analyzed.Simulation software was used to simulate non reinforced,reinforced and reinforced as well as elevated bridge spans.The anti penetration performance under different spans and loads was analyzed.The results show that the mid span deflection of reinforced and reinforced as well as elevated spans changes little,and the overall stiffness,deformation resistance and bearing capacity are strong.The penetration depth and crater diameter of the reinforced bridge span are lower than those of the non reinforced bridge span.The reinforced bridge span can increase the projectile resistance,shorten the projectile movement time,well absorb energy,and has a high ballistic limit speed of 201 m/s.Comprehensive analysis results show that the reinforced bridge span has the best penetration resistance.

关 键 词：装配式 钢桁架桥 桥跨结构 抗侵彻性能 弹道极限速度 

分 类 号：U443[建筑科学—桥梁与隧道工程]