混凝土框架-配筋砌块砌体混合结构在竖向力作用下协同工作性能研究  

Study on cooperation mechanism of hybrid masonry structure with RC framing under the action of vertical force

作　　者：郭秀芹[1] 马建勋[1] 成立涛[2] 

机构地区：[1]西安交通大学,西安710049 [2]中交第一公路勘察设计研究院有限公司,西安710049

出　　处：《应用力学学报》2013年第4期550-556,647,共7页Chinese Journal of Applied Mechanics

基　　金：自然科学基金重点基金(51178390)

摘　　要：推导了在竖向力作用下混凝土框架-配筋砌块砌体混合结构的框架与砌体墙的轴力分配系数计算公式,分析并确定了结构在竖向力作用下协同工作的影响因素;通过有限元模拟研究了框梁截面高度、框柱截面高度、墙高等因素对竖向力作用下框架和砌体墙的轴力分配的影响。结果表明:柱截面高度对框架和墙轴力分配系数的影响最大,变化在10%左右;砌体弹性模量次之;梁截面高度和墙高度的影响都较小。与此同时,将模型分析结果与公式计算结果进行了比较,验证了公式的正确性。Firstly,the computational formula of axial force distribution coefficient for the framework and wall on hybrid masonry structure with RC frame is derived under the action of the vertical force.Theoretical analysis to determine the affecting factors of cooperative work on structures under vertical forces and finite element model is established to study the impact of beam height,column height,wall height etc.on axial force distribution of frame and wall.Results obtained indicate that impact of column section height on axial force distribution of frame and wall is the largest and the variation is around 10%.Impact of masonry elastic modulus on axial force distribution of frame and wall takes the second place.Impact of beam height and wall height on axial force distribution of frame and wall is not obvious.The accuracy of computational formula is verified by the comparison of results from the model analysis and formula calculation respectively.

关 键 词：竖向力 轴力分配 协同工作 

分 类 号：TU398.5[建筑科学—结构工程]