市政技术2025，Vol.43Issue(9)：64-72,9.DOI:10.19922/j.1009-7767.2025.09.064
ECC无接缝水泥混凝土路面开裂行为研究
Cracking Behavior of ECC-based Jointless Cement Concrete Pavement
摘要
Abstract
Poor joint quality in cement concrete pavements results in reduced driving comfort,increased pavement distresses,and difficulties in maintenance.To address this issue,this study proposes a method that place the Engi-neered Cementitious Composites(ECC)connection sections at the joints of the cement concrete pavement to built the Jointless Cement Concrete Pavement(JCCP).A constitutive model of ECC considering the random distribution of fibers was developed to simulate its mechanical behavior under four-point bending.All the relative errors between the simulated and experimental results for key parameters-including initial cracking load,peak load,and peak de-flection-were below 15％;A simulation method for ECC cracking was also proposed.Furthermore,a JCCP model incorporating both ECC and conventional Portland Cement Concrete(PCC)joints was established to investigate the cracking behavior.The results indicate that ECC joints are superior in ductility performance and crack control to PCC;ECC also exhibits excellent crack resistance and durability in the JCCP,effectively enhancing the overall me-chanical performance of the pavement.关键词
道路工程/无接缝水泥混凝土路面/高延性混凝土/有限元模拟/开裂行为Key words
road engineering/Jointless Cement Concrete Pavement(JCCP)/Engineered Cementitious Composites(ECC)/finite element simulation/cracking behavior分类
交通工程引用本文复制引用
王晓威,刘晓瑜,孟震冬..ECC无接缝水泥混凝土路面开裂行为研究[J].市政技术,2025,43(9):64-72,9.基金项目
陕西省教育厅科学研究计划项目资助(23JC046) （23JC046）
国家自然科学基金资助(52008333) （52008333）
