大跨径钢波纹板拱涵加强方式研究  

Research on Strengthening Methods of Large Span Steel Corrugated Plate Arch Culvert

作　　者：冉赛佳 刘鹏宇 熊保林[1,2] 刘家乐 RAN Saijia;LIU Pengyu;XIONG Baolin;LIU Jiale(Key Laboratory of Roads and Railway Engineering Safety Control Ministry of Education,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China;Beijing Track and Electrical Overhauling Section,China Railway Beijing Group Co.,Ltd.,Beijing 100071,China)

机构地区：[1]石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室,河北石家庄050043 [2]石家庄铁道大学土木工程学院,河北石家庄050043 [3]中国铁路北京局集团有限公司北京工电大修段,北京100071

出　　处：《河北工程大学学报(自然科学版)》2024年第6期94-100,共7页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：河北省重点研发计划资助项目(20375504D)。

摘　　要：为探究钢波纹板拱涵采取加强措施后的力学性能,以阳泉市绕城改线工程为依托,选择环向加强和双向加强措施,采用数值模拟方法来对比分析钢波纹板拱涵应力与变形,分析其加强效果。结果显示:拱涵整体受压,应力与变形均呈对称分布,受螺栓连接影响,在拱脚处应力最大,拱腰次之,拱顶应力最小,最大竖向变形位于拱顶,波峰和波谷变形一致,应力有所差距,拱腰处波谷应力比波峰应力大4.83%,拱顶处波峰应力比波谷应力大18.78%;采取加强措施后拱涵的应力及变形大幅降低,拱脚处的应力集中程度减少,但在加强处出现应力集中,相较于波谷,波峰加强效果更明显;增加环向加强管钢的数量,结构刚性也随之提高,加强效果愈发明显,应力最大降幅为68.38%,竖向变形最大降幅为10.29%,而轴向加强效果不太显著。To investigate the mechanical properties of reinforced steel corrugated plate arch culverts,based on the Yangquan Ring Road realignment project,circumferential reinforcement and bidirectional reinforcement measures were selected.Numerical simulation methods were used to compare and analyze the stress and deformation of steel corrugated plate arch culverts,and to analyze their reinforcement effects.The results show that the arch culvert is under overall compression,with stresses and deformations symmetrically distributed.Under the influence of bolt connection,the stress is highest at the arch foot,followed by the arch waist,and the stress at the arch crown is the smallest.The maximum vertical deformation is located at the arch crown,and the deformation at the peak and valley is consistent,with a difference in stresses.The stress at the peak and valley of the arch waist is 4.83%greater than that at the peak,and the stress at the peak and valley of the arch crown is 18.78%greater than that at the valley.After strengthening,the stress and deformation of the arch culvert are significantly reduced,and the stress concentration at the arch foot decreases.However,stress concentration occurs at the strengthening point,and compared to the valley,the peak strengthening effect is more obvious.By increasing the number of circumferential reinforcement pipes,the structural rigidity also increases,and the rein forcement effect becomes more pronounced.The maximum reduction in the stress is 68.38%and the maximum reduction in the vertical deformation is 10.29%,while the axial reinforcement effect is not very significant.

关 键 词：钢波纹板拱涵 大孔径 加强方式 车辆荷载 

分 类 号：U449.84[建筑科学—桥梁与隧道工程]