西南交通大学学报2025，Vol.60Issue(2)：472-483,12.DOI:10.3969/j.issn.0258-2724.20230040
ECC和预制榫卯混合连接装配式桥墩抗震试验及计算方法
Seismic Testing and Calculation Method of Assembled Bridge Piers with Hybrid Connection of Engineered Cementitious Composites and Assembled Mortise-Tenon Joints
摘要
Abstract
In order to improve the force performance and durability of assembled bridge piers,it was proposed to adopt the assembled bridge piers with hybrid connection of cast-in-place fiber-reinforced engineered cementitious composites(ECC)and assembled mortise and tenon joints and carry out the pseudo-static tests of the bridge piers with different design parameters(depth of the groove and thickness of the cast-in-place ECC layer),so as to establish the experimentally-validated ABAQUS finite-element model.In addition,extended parametric analysis was carried out,and theoretical derivation was conducted on the basis of the finite element parametric analysis.The calculation method of the eigenvalue of the skeleton curve and the restoring force model of the hybrid-connected assembled RC bridge pier were proposed.The results show that the damage mode of the three bridge pier specimens is compression bending damage,and the cast-in-place ECC section of each specimen is not damaged;the changes in the depth of the groove and the height of the cast-in-place ECC section have significant effects on the ductility coefficient and ultimate displacement of the bridge piers.The results of the theoretical analysis coincide with the results of the finite element analysis.The ratio of the calculated values of the formulas to the values of the finite element analysis ranges from 0.85 to 1.14,except for peak displacement,and the results are reliable;the hysteresis curve calculated by the hybrid-connected assembled bridge pier restoring force model matches well with the test curve,which can be used for the elastic-plastic calculation of bridge piers.关键词
桥梁工程/榫卯连接/抗震性能/纤维增强水泥基复合材料/恢复力模型Key words
bridge engineering/mortise-tenon joint/seismic performance/fiber-reinforced engineered cementitious composites/restoring force model分类
交通运输引用本文复制引用
林上顺,林永捷,张建帅,赵锦冰..ECC和预制榫卯混合连接装配式桥墩抗震试验及计算方法[J].西南交通大学学报,2025,60(2):472-483,12.基金项目
福建省交通科技计划(JC202310) （JC202310）
福建省自然科学基金项目(2019J01779) （2019J01779）
