To study the actual response behavior of asphalt pavement structure in a wide temperature range

a semi-rigid base asphalt pavement and a full-thickness asphalt pavement were selected as research objects and Falling Weight Deflectometer (FWD) as test load based on the RIOHTrack full-scale test track

and the service temperature and structure response of the two kinds of pavement structures were observed synchronously in the year of 2017. The basic rule of asphalt pavement structure response in wide temperature range was obtained

the relationship models between temperature and deflection

temperature and strain

and temperature and stress were established

and the distribution characteristics of strain and stress along the depth direction of the structures were analyzed. Results show that temperature had significant effect on deflection

strain

and stress response. With seasonal variation

the response values of the asphalt pavement structures in wide temperature range changed alternately with annual cycle

and the values were small in winter and large in summer. Exponential function model can be used to describe the correlation between temperature and structural response parameters

and the decision coefficient R2 could reach more than 0.95 with good correlation. Within the wide temperature range

in addition to the monotonous increase or decrease of the strain or stress values inside the structure

temperature variation could also change the strain direction. In pavement structure calculation

it is suggested to select temperature at the most unfavorable season to check the stress state of the asphalt concrete layer in order to ensure the safety of the structure.