摘要
针对由领结状砌块和砂浆形成的砌体结构,运用契合理论和均匀化方法分析了其轴向拉伸变形和应力应变关系,得到弹性阶段有效模量及强化阶段泊松比和应变能与砌块几何尺寸和界面性质之间的关系;并在此基础上讨论了互锁砌体结构的强化机理及实现方式。结果表明,由于砌体交叠区界面倾斜和摩擦作用,砌块相互滑移难度加大而形成互锁,结构实现强化。现实的工程意义是,引入倾斜界面能有效地改善砌体的拉伸性能。
For the interlocking masonry structure stacked by cravat shaped brick and mortar,regular tessellation theory and homogenization theory are used to analyze the axial tensile deformation and stress-strain curve. The relationship between effective modulus in elastic phase and Poisson＇s ratio and strain energy in inelastic phase and geometry of brick and property of interface is constituted through the analysis. Based on obtained curve and relationship,the strengthening mechanism and realizing way of the masonry structure are discussed. It is found that neighboring bricks sliding are impeded by the interlock in overlap region due to the inclined interface and friction. The practical meaning is the tensile properties of masonry structure can be usefully improved by the introduced declining interface.
出处
《科学技术与工程》
北大核心
2016年第7期74-79,共6页
Science Technology and Engineering
基金
教育部"春晖计划"合作科研项目(z2014040)
四川省教育厅科研项目(15ZA0138)
西华大学重点科研基金项目(z1320608)资助
关键词
砌体结构
倾斜界面
互锁机制
有效模量
应力应变曲线
masonry structure
inclined interface
interlock
effective modulus
stressstrain curve
