建筑结构学报2025，Vol.46Issue(4)：70-80,11.DOI:10.14006/j.jzjgxb.2024.0168
带角钢消能器的自复位钢筋混凝土梁柱节点抗震性能试验研究
Experimental investigation on seismic performance of self-centering RC beam-column joint with steel angles as energy dissipators
摘要
Abstract
To address shortcomings related to the detailing of the existing self-centering reinforced concrete(SCRC)beam-column joints with steel angles as energy dissipators,a novel joint detailing was proposed.Fiber-reinforced shrinkage-compensated cementitious(FSC)grout was used for the beam-column connection,and the longitudinal reinforcement at the beam ends was reliably anchored.Low-cycle loading tests were conducted on eight full-scale SCRC beam-column joints and one cast-in-place beam-column joint.The various parameters,including steel angle sizes,anchorage methods of longitudinal reinforcement at beam ends,and repair measures,were investigated to assess their impact on the seismic performance of SCRC beam-column joints.Additionally,a comparison was made to evaluate the differences in seismic performance between SCRC joints and cast-in-place beam-column joints with the same dimension and longitudinal reinforcement ratio.The experimental results indicate that compared to the traditional cast-in-place joint,the SCRC beam-column joints show better reparability.The use of steel angles significantly enhances the bearing capacity,stiffness,and energy dissipation capacity of the SCRC beam-column joints.As the size of the steel angle increases,a slight improvement in bearing capacity,stiffness,and energy dissipation is also observed.Under small loading drift,the displacement at the loading end is mainly caused by the bending deformation of the beam and column.Once the joint opens,the lateral displacement resulting from the rotation of the beam end relative to the column becomes dominant.The experimental results validate the reliability of the proposed joint detailing.关键词
自复位钢筋混凝土梁柱节点/掺钢纤维补偿收缩水泥基灌浆料/角钢/锚固方式/拟静力试验/抗震性能Key words
self-centering RC beam-column joint/fiber-reinforced shrinkage-compensated cementitious grout/steel angle/anchorage method/quasi-static test/seismic performance分类
土木建筑引用本文复制引用
卜凡夫,姜淳,吕西林,蒋欢军..带角钢消能器的自复位钢筋混凝土梁柱节点抗震性能试验研究[J].建筑结构学报,2025,46(4):70-80,11.基金项目
国家自然科学基金项目(U2239253). （U2239253）
