1.Key Laboratory of Infrastructure Durability and Operation Safety in Airfield of CAAC, College of Transportation Engineering, Tongji University, Shanghai 201804, China;
2.Key Laboratory of Road and Traffic Engineering, Ministry of Education, College of Transportation Engineering, Tongji University, Shanghai 201804, China
Abstract：To clarify the strain response of rubberized concrete pavement under impact loading, a testing method of strain response under impact loading was designed based on fiber Bragg grating strain sensor and heavy weight deflectometer (HWD). With this method, the differences in strain response between rubberized concrete pavement and ordinary concrete pavement under impact loading were compared and analyzed, and the effect of pavement size on the strain response of the pavement under impacting loading was investigated by monitoring different sizes of rubberized concrete pavement. The test results show that the addition of rubber particles changes the strain response distribution of concrete pavement under impact loading compared with ordinary concrete pavement, so that the horizontal strain in the concrete pavement decreases while the horizontal longitudinal strain at the edges and corners increases. Moreover, with the increase of the length of the pavement, the strains in the most unfavorable strain response directions of the rubberized concrete pavement at the center, edge and corner gradually increase, among which the longitudinal strain at the corner of pavement increases the fastest. In other word, the increase of pavement length will transfer the most unfavorable position and direction of rubberized concrete pavement from the transverse direction at the edge of pavement to the longitudinal direction at the corner of pavement. Therefore, the strain at the corner of the slab should also be considered in the design and construction of large size rubberized concrete pavement.
张高望1,2，张家科1,2，袁捷1,2，徐文毅1,2. 冲击荷载下橡胶混凝土道面应变响应研究[J]. 振动与冲击, 2023, 42(8): 296-304.
ZHANG Gaowang1,2, ZHANG Jiake1,2, YUAN Jie1,2, XU Wenyi1,2. A study on strain response of rubberized concrete pavement under impact loading. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(8): 296-304.
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