钢筋混凝土大偏心梁柱节点抗震性能的试验研究

Experimental Research on Seismic Behavior ofLarge Eccentric Beam-Column Joint

本文介绍了对于梁柱中心线间距大于四分之一柱宽的大偏心梁柱节点所进行的试验研究和计算分析。在弹性分析的基础上进行了四种试件的试验研究。计算得出的节点剪应力分布规律和试验过程中的现象与破坏特征共同反映了大偏心节点受力不利，证明采取梁端水平加腋的措施可以改善大偏心节点的受力性能。本文提出了大偏心节点受剪承载力的计算方法和改善节点受力性能的构造措施。

Experimental research and analysis of the seismic behavior of reinforced concrete eccentricbeam-column joints with eccentricity larger than one-fourth of the column width are introduced.Based on the finite element analysis, four types of test specimens have been designed and tested.The characteristics of large eccentric joints have been found from shear stress distribution, torsionaleffects and experimental results. Horizontally haunched beam has been proved to be an effectivemeasure to improve the aseismic behavior of the joint. Formulas of shear strength of large eccentricjoint subjected to the combined action of shear and torsion are given with some recommendations fordetailing suggested.