摘要
采用理论分析的方法,建立了协同作用力学模型。在此基础上,根据采动区地表变形曲线和边界条件,求解独立基础高压线塔桁架结构的挠曲线微分方程,再由挠曲线方程求解高压线塔桁架结构附加变形和附加内力。研究表明:采动影响下地基、基础与铁塔结构的协同变形理论模型能更好地描述采动影响下高压线铁塔移动变形特征,可以计算采动影响下高压线路铁塔的移动变形及附加应力,并通过计算实例进行了验证。
The synergy acting mechanical model was set up by theoretical analysis method.Based on this model,the flexible curve differential equations of the iron tower trussed structure were solved according to the surface deformation curves and the boundary conditions and then the additional strain and stress in the tower trussed structure were calculated based on the equations.The study demonstrates that the movement and deformation characteristics of the tower due to undermining can be described by the synergy acting model of the tower structure,groundwork and foundation and the stress and strain of the iron tower due to undermining can be calculated by this model and it is verified through a calculated case at last.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2011年第7期1075-1080,共6页
Journal of China Coal Society
基金
国家自然科学基金资助项目(50974053)
关键词
高压线塔
协同变形理论
地表移动变形
桁架结构
采动损害与保护
high voltage power transmission lines tower
synergy deformation theory
surface movement and deformation
trussed structure
mining damage and protection
