ECC-钢桥面铺装层槽钢连接件承载力分析  

Bearing Capacity Analysis of Channel Steel Connectors in ECC-Steel Deck Pavement

作　　者：常先睿 许荣盛 单庆婷 CHANG Xianrui;XU Rongsheng;SHAN Qingting(College of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601

出　　处：《安徽建筑大学学报》2022年第3期8-17,共10页Journal of Anhui Jianzhu University

基　　金：安徽建筑大学博士启动基金项目(2020QDZ25)。

摘　　要：铺装层与钢桥面在周期性交通荷载作用下展现出较差的抗剪切能力,易产生推移、拥包等病害损坏。针对此,提出基于槽钢连接的ECC-钢桥面铺装结构,通过有限元软件模拟槽钢推出试验,并结合正交试验研究ECC材料中槽钢力学性能。结果表明:槽钢连接件在ECC中的破坏模式以剪切断裂为主,槽钢尺寸对抗剪承载力的影响排序为槽钢长度>腹板厚度>翼缘厚度>槽钢高度,并提出了槽钢剪力影响域概念。最后通过对模拟结果进行函数拟合得到槽钢承载力修正系数,用于计算ECC材料中槽钢连接件的抗剪承载力。The pavement and steel deck exhibit poor shear strength under cyclic traffic loading and are susceptible to diseases such as shoving and bumps.Therefore,an ECC-steel deck pavement structure based on channel steel connection is proposed.The mechanical properties of channel steel in ECC materials are investigated by simulating channel steel launch tests with finite element software and orthogonal tests.The results show that the failure of channel steel connectors in ECC is mainly shear fracture.The influence of channel steel size on the shear bearing capacity is ranked from largest to smallest as channel steel length,web thickness,flange thickness and channel height and the concept of shear affected domain of channel steel is proposed.Then,the correction coefficients of the channel steel bearing capacity is obtained by the function fitting of the simulation results,which is used to calculate the shear bearing capacity of channel steel connectors in ECC materials.

关 键 词：桥梁工程 抗剪承载力 有限元分析 组合桥面板 槽钢连接件 工程水泥基复合材料 

分 类 号：U443[建筑科学—桥梁与隧道工程]