机场沥青跑道加铺改造现场足尺试验分析  

Analysis on Field Full-scale Experiment of Asphalt Runway Overlaying Reconstruction in Airport

作　　者：王甫来[1] 朱立国 

机构地区：[1]青岛国际机场集团有限公司,山东青岛266000 [2]中铁第五勘察设计院集团有限公司,北京市102600

出　　处：《城市道桥与防洪》2018年第12期177-180,共4页Urban Roads Bridges & Flood Control

摘　　要：依托成都双流国际机场西跑道沥青加铺改造工程,开展机场复合道面结构响应现场试验。在加铺层中埋设光纤光栅沥青应变计,实测飞机荷载作用下沥青层的结构响应。借助三维有限元数值模拟手段,分析了沥青层结构响应在平面分布不均的原因。结果表明:光纤光栅沥青应变计可有效获取沥青加铺层的应变数据,但存活率不高;机场道面沥青加铺层在既有道面接缝处会出现应力集中,板角处最为严重,加铺中应设置合适的缓解措施。Relying on the Chengdu Shuangliu International Airport West Runway Asphalt Overlaying Reconstruction Project, the field experiment of airport composite pavement structure response is carried out.The fiber bragg grating(FBG) asphalt strain gauge is embedded in the overlay to measure the structure response of asphalt layer under the action of airplane loads. In virtue of 3 D finite element numerical simulation,the reasons of asphalt layer structure response are analyzed when the plane distribution is uneven. The result shows that the FBG asphalt strain gauge can effectively acquire the strain data of asphalt overlay, but the survival rate is not high. The stress concentration will occur at the existing pavement seams of airport pavement asphalt overlay, and is mostly serious at the plate angle. The suitable reduction measures should be taken during overlaying.

关 键 词：沥青加铺层 应变计 接缝 三维有限元 

分 类 号：U416.217[交通运输工程—道路与铁道工程]