波纹钢板在圬工拱桥拓宽改造中的应用研究  

Study on the application of corrugated steel plate in the widening of masonry arch bridge

作　　者：武亦彬 刘保东[1] 肖勇 彭斌 王文兵 赵爱宁 贾代军 Wu Yi-bin;Liu Bao-dong;Xiao Yong;Peng Bin;Wang Wen-bing;Zhao Ai-ning;Jia Dai-jun(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Yunnan Qujing Design&Research Institute Co.Ltd,Qujing 655099,China;Pu′er Highway Planning Survey and Design Institute Co.Ltd,Pu′er 665000,China;Yunnan Pingjie Engineering Design Consulting Co.Ltd,Kunming 650220,China)

机构地区：[1]北京交通大学土木与建筑工程学院,北京100044 [2]曲靖市公路规划勘察设计院,云南曲靖655099 [3]普洱公路规划勘察设计院有限公司,云南普洱665000 [4]云南平捷工程设计咨询有限公司,云南昆明650220

出　　处：《工程抗震与加固改造》2024年第4期172-181,共10页Earthquake Resistant Engineering and Retrofitting

摘　　要：本文依托云南省某实腹式圬工拱桥,提出采用波纹钢板对圬工拱桥进行拓宽改造。采用数值模拟方法,考虑石砌拱圈砌体之间及桥梁各种材料之间的相互作用关系,建立了较为符合实际的精细化有限元模型。分析桥梁在拓宽前、后的承载能力,研究采用波纹钢板对圬工拱桥进行加宽后的原拱桥石砌拱圈受力性能的变化规律。同时,对其进行优化,讨论连接钢筋直径、土体弹性模量和波纹钢板厚度对桥梁加宽效果的影响。结果表明,采用波纹钢结构加宽前、后的拱桥均能满足承载能力的要求;同时,采用波纹钢板对圬工拱桥加宽后,波纹钢板拱圈上的部分填土自重会传递到原石砌拱圈,增大原拱圈的应力和变形;波纹钢板上的回填土体弹性模量相比于预埋连接钢筋直径及波纹钢板厚度,对所提出的拓宽改造方案的效果影响更大。Base on a solid abdominal masonry arch bridge in Yunnan province,this paper proposes to use corrugated steel plate to widen and transform the masonry arch bridge.By using numerical simulation method,considering the interaction between masonry of stone arch circle and various bridge materials,a fine finite element model is established which accords with the reality.The bearing capacity of the bridge before and after widening is analyzed,and the variation rule of the mechanical behavior of the stone arch ring of the original arch bridge widened by corrugated steel plate for masonry arch bridge is studied.At the same time,the influence of the diameter of connecting steel bar,the elastic modulus of the soil and the thickness of the corrugated steel plate on the widening effect of the bridge is discussed.The results show that both the before and after arch bridge widen with corrugated steel structure can meet the requirements of bearing capacity.At the same time,after the corrugated steel plate is used to widen the masonry arch bridge,part of the earth weight on the corrugated steel plate arch ring will be transferred to the original stone arch ring,increasing the stress and deformation of the original arch ring.The elastic modulus of backfill soil in corrugated steel plate has more influence on the effect of the proposed widening scheme than the diameter of embedded steel bar and the thickness of corrugated steel plate.

关 键 词：波纹钢 圬工拱桥 拓宽改造 数值分析 参数优化 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]