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-  2018 

基于振动特性的机场刚性道面传荷性能
Rigid pavement load transfer ability of airport based on vibration characteristics

DOI: 10.13700/j.bh.1001-5965.2017.0687

Keywords: 传荷性能,基频,幅值,相位差,试验
load transfer ability
,fundamental frequency,amplitude,phase difference,experiment

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Abstract:

摘要 接缝的传荷性能需定期检测以指导机场刚性道面的维护和使用,针对现有检测方法(如落锤式弯沉仪)难以进行偏远山区和交通运输困难地区的机场测试问题,提出了普通加载车辆跳车试验法,探究传力杆自身参数和道面结构参数对传荷性能和道面振动特性(基频、幅值、相位差)的影响规律,找出主要影响因素为传力杆弹性模量和土基模量;建立多因素下传荷性能和道面振动特性的定量关系,并通过室外试验验证该公式的准确性和方法的可行性。
Abstract:Load transfer ability needs to be detected termly to guide the maintenance and usage of concrete pavement of airport, while using the existing methods (such as falling weight deflectometer) is difficult to implement airport testing in remote mountain areas and the areas where transportation is difficult. Therefore, a bumping method of common vehicle is proposed to analyze the influence of dowel bar and pavement structure parameters on load transfer ability and pavement vibration characteristics (i.e., fundamental frequency, amplitude and phase difference). It is found that the elasticity modulus of dowel bar and subgrade modulus are the main effect factors. The quantitative relationship between load transfer ability and pavement vibration cha-racteristics is established with multiple factors, and the accuracy of formulas and the feasibility of bumping method are verified by outdoor experiments.

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