CAJ | 학술논문

本文提出了一个用于有限元分析的钢筋销栓作用模型。该模型采用分布模式来处理钢筋的横向销栓力和横向变形，以便与钢筋的整体式模型和混凝土的分布裂缝模型相协调。在有限元分析中采用了位移控制的割线刚度迭代法，可以进行荷载位移曲线下降段的分析计算。对深梁试件的分析表明，本文提出的钢筋混凝土模型可以准确分析试件的荷载变形特性。同时发现，纵向主筋的销栓作用对深梁的承载力和变形能力都有重要的影响。
본문제출료일개용우유한원분석적강근소전작용모형。해모형채용분포모식래처리강근적횡향소전력화횡향변형，이편여강근적정체식모형화혼응토적분포렬봉모형상협조。재유한원분석중채용료위이공제적할선강도질대법，가이진행하재위이곡선하강단적분석계산。대심량시건적분석표명，본문제출적강근혼응토모형가이준학분석시건적하재변형특성。동시발현，종향주근적소전작용대심량적승재력화변형능력도유중요적영향。
The dowel action of reinforcing steel bars crossing cracks ismodeled for the finite element analysis of reinforced concrete. In the proposed model, the dowel forces and displacements are smeared over the element respectively in order to be consistent with the smeared crack and reinforcement models. The dowel action model is incorporated in a finite element procedure with displacement controlled iteration scheme and secant stiffness formulation, so as to deal with the post-peak behavior of reinforced concrete structures. The analytical results on deep beams agree closely with test data. It is concluded that the dowel action of reinforcing main bars has a significant contribution to the strength and ductility of shear critical members.