钢筋混凝土变梁中节点的简化分析模型  

SIMPLIFIED MODEL FOR SHEAR ANALYSIS OF RC INTERIOR JOINTS OF BEAMS WITH DIFFERENT DEPTH

作　　者：邢国华[1] 刘伯权[1] 吴涛[1] 姚显贵 

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]中铁隧道勘测设计院有限公司,天津300133

出　　处：《工程力学》2010年第12期149-155,共7页Engineering Mechanics

基　　金：国家自然科学基金项目(50608004);教育部高校博士点基金项目(20060710004)

摘　　要：根据10个梁高不等钢筋混凝土框架中节点试件在低周反复荷载作用下的试验结果,重点分析了该类框架中节点的破坏过程和破坏特点。在试验研究的基础上,通过建立平衡方程、运动方程和物理方程对框架节点进行受力分析,建议了考虑梁高不等特性的中节点等效核心区的简化计算模型,并应用该模型对变梁中节点进行受力分析。研究结果表明:该文建议模型计算得到的剪应力与剪切变形的关系曲线与试验结果吻合较好。Ten specimens of interior joints of beams with different depth were tested under reversed cyclic loading.The experimental study focused on the failure characteristics and failure process of interior joints.Based on the experimental study,a simplified analytical model for the equivalent joint core of the interior joint under the combined actions of axial force and shear was established and the shear stress versus shear angle relationship of the equivalent joint core was calculated by using equilibrium equations,kinematics equations and physical equations.Good agreement between experimental results and prediction results was observed.

关 键 词：中节点 抗剪性能 计算模型 变梁 简化计算 

分 类 号：TU375.4[建筑科学—结构工程]