为改善板底脱空和接缝传荷能力下降对装配式路面结构的不利影响，提出后张预应力钢绞线接缝（PJ）和组合式接缝（ZJ），采用有限元软件ABAQUS建立足尺模型，通过相似理论和3D打印技术建立缩尺模型并验证仿真模型，推荐PJ的最佳局部尺寸，对比PJ、ZJ与常见接缝板块的力学响应和受脱空影响程度，针对新型接缝研究脱空影响因素敏感性。研究结果表明：布设6根直径为15.2 mm的预应力筋时，ZJ的传荷系数可达84%，ZJ板块弯拉应力可减小50%；相较于常见接缝，ZJ板块弯拉应力几乎不受脱空影响，当脱空尺寸从0 m发展至0.2 m时，ZJ的传荷系数仅减小1%。因此，提出的新型接缝不仅可以满足接缝传荷要求、减小板块应力，而且可以明显减小板底脱空对板块弯拉应力和传荷系数的不利影响。

In order to improve the adverse effects on the precast pavement structure caused by cavities under slabs and joint load transfer efficiency decline, the post-tensioned prestressed steel stranded joint (PJ) and combined joint (ZJ) are proposed, and the full-scale simulation model is established by ABAQUS. Based on the similarity theory and 3D printing technology, the indoor scale model is established and the simulation model is verified. Then, the optimal local size of PJ is recommended, the mechanical response and the influence by cavities under slabs with PJ, ZJ and common joints are compared, the sensitivity of factors affecting slab mechanical response when there have cavities is analyzed for new joint. The results show that the load transfer efficiency of ZJ can reach 84% and the flexural-tensile stress of ZJ slab can be reduced by 50% when 6 prestressed tendons with diameter of 15.2 mm are laid. Compared with common joints, the flexural-tensile stress of ZJ slab is almost unaffected by cavities, and the load transfer efficiency of ZJ decreases by only 1% when the cavity size grows from 0 m to 0.2 m. Therefore, the new joint proposed in this paper can not only meet the requirements of joint load transfer, but also significantly reduce the adverse effects of cavities on slab flexural-tensile stress and joint load transfer efficiency.