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为了解决路面结构在移动荷载作用下临界状态复杂的问题,基于路面大修结构安定理论,提出路面大修材料的屈服准则,计算不同参数对路面大修结构在行车荷载以不同速度反复作用时达到临界破坏状态时的极限荷载影响程度。结果表明:半刚性基层总厚度由32 cm增加到40 cm(增幅25%),大修结构安定极限荷载增幅均值达到37.67%,沥青冷再生厚度增加后,路面安定极限荷载平均增幅为21.97%,而半刚性基层模量和沥青冷再生模量对应安定极限荷载增幅分别为40.18%,5.76%。
In order to solve the problem that the pavement structure has complicated critical condition under the action of moving load, the yield criterion of pavement overhaul material is proposed based on the theory of pavement overhaul structure stability. The critical failure condition of pavement overhaul structure is calculated when the driving load repeatedly acts at different speeds with different parameters When the ultimate load impact. The results show that the total thickness of the semi-rigid base increases from 32 cm to 40 cm (an increase of 25%), and the mean value of the stability load of the overhaul structure reaches 37.67%. The increase of cold reclamation thickness increases the average increase of the ultimate load of pavement stability to 21.97% Semi-rigid base modulus and asphalt cold regenerative modulus corresponding to the stability load increase of 40.18%, 5.76%.