机场水泥道面切缝倒角应力分析-交通运输工程学报.PDF

第8 卷　第6 期 交 通 运 输 工 程 学 报 Vol.8　No.6 2008 年12 月 Journal of Traffic and Transportation Engineering Dec.2008 :1671-1637(2008)06-0044-05 1 2 1 3 3 杜　浩, 周正峰, 凌建明, 张志良 , 斯碧峰 (1. , 　201804;2. , 　610031;3., 　201106) 　:为比较机场 性道面切缝槽口不同倒角形状对减小应力集中的效果, 评估倒角工艺对道面 功能性能的影响, 运用 NSYS 分析软件建立道面板切缝位置有限元模型, 在道面接缝节点间分别 设梁单元和弹簧单元模拟接缝传荷作用, 以Boeing777 作为荷载机型, 对6 种不同倒角形式切缝边 缘位置的荷载应力和温度应力进行对比分析, 并通过现场试验对道面的平整度和摩擦系数进行测 试。分析结果表明:各种切缝形式均能明显改善切缝位置的应力状况, 距离切缝愈近位置, 改善程 度愈明显, 不同切缝形式对减小应力集中的程度相差较大, 其中半径为6 mm 的圆弧倒角效果最 佳;各种切缝构造对道面平整度和摩擦系数的影响较小, 均满足技术要求。 :机场工程; 性道面;切缝倒角;有限元分析 :U416.216　　　: Stress analysis on joint chamfer for cement concrete airport pavement 1 2 1 3 3 DU Hao , ZHOU Zheng-feng , LING Jian-ming , ZH NG Zhi-liang , SI Bi-feng (1.Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804, China;2.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China;3.Shanghai irport Construction Headquarters, Shanghai 201106, China) Abstract:In order to compare the improvement effects of stress concentration in airport rigid pavement joint notches caused by different chamfer shapes, and evaluate the effect of the chamfer on pavement performance, a finite element model of pavement joint opening was established by using NSYS software, the joint loading-transfer character was simulated by using beam and spring elements, Boeing777 was adapted as aircraft load, the loading stresses and temperature stresses for 6 different chamfer forms at the edges of the joint openings were analyzed contrastively, and the