建筑结构学报2025，Vol.46Issue(6)：141-152,12.DOI:10.14006/j.jzjgxb.2024.0276
高强钢绞线网-ECC加固RC柱抗震性能研究
Seismic behavior of RC columns strengthened by high-strength steel wire meshes reinforced ECC
摘要
Abstract
High-strength steel wire meshes reinforced engineered cementitious composites(ECC)has the advantages of high strength,ultra-high ductility,toughness and excellent cracking control ability.In order to study the effect of high-strength steel wire meshes reinforced ECC on the seismic performance of reinforced concrete(RC)columns and its working mechanism,five strengthened columns and one unstrengthened column were fabricated for cyclic loading tests.The test parameters included the strengthening scheme and the axial compression ratio.The test results show that,after strengthened by high-strength steel wire meshes reinforced ECC,the failure pattern of the column is changed from flexure-shear failure to flexural failure,the hysteresis loops are fuller,the deformation capacity is improved significantly,and the stiffness degradation is delayed.Compared with the unstrengthened column,the peak load,displacement ductility index and cumulative energy dissipation of the strengthened column are increased by 20.1％-25.4％,9.0％-44.7％,and 112.4％-374.6％,respectively.The addition of transverse and longitudinal steel wire significantly improves the ductility,stiffness,and energy dissipation capacity of the column.The strengthened columns still have good energy dissipation capacity and ductility under a large axial compression ratio.Based on the test results,the calculation model was developed to predict the peak load of strengthened columns.The predicted results are in good agreement with the test results,and the average error is less than 10％.关键词
钢筋混凝土柱/加固/高强钢绞线网/工程用水泥基复合材料/轴压比/拟静力试验/抗震性能Key words
RC column/strengthening/high-strength steel wire mesh/engineered cementitious composites/axial compression ratio/quasi-static test/seismic performance分类
建筑与水利引用本文复制引用
卫垚鑫,李可,朱俊涛,范家俊,李世伟..高强钢绞线网-ECC加固RC柱抗震性能研究[J].建筑结构学报,2025,46(6):141-152,12.基金项目
国家自然科学基金面上项目(52378205,52378319),国家自然科学基金青年科学基金项目(52108183). （52378205,52378319）
