Abstract: According to the cold recycled pavement structure design of Guanxi line in Foshan，BISAR3． 0 is chosen as the calculation software to study the mechanical response of the equivalent rebounding modulus of the original pavement，the thickness of surface pavement layer，the thickness of cold recycled base and cold recycled base modulus on cold recycled pavement structure performance． Therefore，references for the cold recycled pavement structure design are provided． The analysis shows that the equivalent rebounding modulus of the original pavement directly determines the service performance of the road after the reconstruction; the thicker surface layer，the anti-fatigue properties of base，anti-rutting performance of pavement enhance markedly，and the deflection on the surface reduce; as cold recycled base modulus increases，the bottom of base layers is easy to crack; but when the base modulus is too small，the bottom of surface layers is easy to produce bending fatigue，the pavement is also prone to rutting; so the cold recycled base thickness is of no less than 15cm．

Key words: road engineering, cold recycled pavement, mechanical response, influence factors

摘要： 针对佛山官西线冷再生路面结构设计，采用有限元计算软件BISAR 3． 0 分析了原路当量回弹模量、沥青面层 厚度、基层厚度和基层模量对冷再生路面结构力学性能的影响，以便为合理的冷再生路面结构设计提供参考。分 析表明: 原路面当量回弹模量直接决定改建后路面的使用性能; 面层越厚，基层抗疲劳性能、路面抗车辙性能增强， 路表弯沉减小; 冷再生基层模量增加，基层层底易开裂，但当基层模量过小时，面层层底易产生弯拉疲劳，且易产生 车辙; 基层厚度一般不能低于15 cm。

关键词: 道路工程, 冷再生路面, 力学响应, 影响因素