飞机轮载作用下沥青道面荷载影响范围分析  

Influence range analysis of asphalt airfield pavement load under aircraft wheel load

作　　者：黄之懿 游庆龙[1] 马靖莲 田帅团 赵志 黄文旭 HUANG Zhiyi;YOU Qinglong;MA Jinglian;TIAN Shuaituan;ZHAO Zhi;HUANG Wenxu(School of Highway,Chang’an University,Xi’an 710064,China;School of Management,Xi’an University of Finance and Economics,Xi’an 710000,China;China Civil Aviation Airport Construction Group Corporation,Beijing 100101,China;AVIC-KDN Airport Engineering Co.,Ltd.,Beijing 100621,China)

机构地区：[1]长安大学公路学院,西安710064 [2]西安财经大学管理学院,西安710000 [3]中国民航机场建设集团公司,北京100101 [4]中航凯迪恩机场工程有限公司,北京100621

出　　处：《中国科技论文》2023年第8期890-896,904,共8页China Sciencepaper

基　　金：洛阳市公路事业发展中心资助项目(211921210479);民航机场工程技术研究中心开放课题资助项目(ERCAOTP20220303)。

摘　　要：为了探究飞机轮载作用下沥青道面荷载影响范围,分别选取柔性基层(flexible base,FS)和半刚性基层(simi-rigid base,SR)沥青道面结构,构建三维有限元模型,计算获取了B737-300、B767-300ER、B777-300ER这3种机型轮载作用下沥青道面结构力学响应,分别以各力学响应量峰值的1%、5%、10%为界限,从道面表面弯沉、土基顶面竖向压应变、沥青面层底部拉应力3个方面分析了不同机型荷载作用于沥青道面荷载的影响范围。结果表明:3种机型荷载作用下,道面表面弯沉按峰值的1%、5%、10%得到的最大影响范围分别偏离中心线约12.793、11.354、10.515 m;土基顶面竖向压应变按峰值的1%、5%、10%得到的最大影响范围分别为7.457、6.479、5.705 m;沥青面层底部拉应力按峰值的1%、5%、10%得到的最大影响范围均为7.734 m;选取道面表面弯沉和土基顶面竖向压应变分析时,不同的道面结构对荷载范围具有明显影响,而选取沥青面层底部拉应力分析时,不同的道面结构对荷载范围几乎没有影响。In order to explore the influence range of asphalt pavement load under aircraft wheel load,the flexible base(FS)and semi-rigid base(SR)asphalt pavement structure were selected as model materials to build a three-dimensional finite element model,and the mechanical response of asphalt pavement structure under wheel load of B737-300,B767-300ER and B777-300ER was calculated and obtained.Taking 1%,5%and 10%of the peak mechanical response value as limits,the influence range of different types of load on asphalt pavement was analyzed from three aspects:surface deflection of pavement,vertical compressive strain at the top of soil foundation and tensile stress at the bottom of asphalt pavement.The results show that:under the three types of load,the influence range of the deflection of the pavement surface is about 12.793,11.354,10.515 m when the peak value is 1%,5%and 10%,respectively.When the compressive strain of the top surface of soil foundation is 1%,5%and 10%of the peak value,the influence ranges are 7.457 m,6.479 m and 5.705 m,respectively.When the tensile stress at the bottom of asphalt surface is 1%,5%,10%of the peak value,the influence range is 7.734 m.In the analysis of tunnel surface bending and vertical compressive strain of soil foundation top,different tunnel structures have obvious influence on the load range,while in the analysis of tensile stress at the bottom of asphalt surface,different tunnel structures have almost no influence on the load range.

关 键 词：机场工程 力学响应 沥青道面 荷载范围 有限元分析 

分 类 号：U416.223[交通运输工程—道路与铁道工程]