摘要
通过对6根简支钢-混凝土组合梁缩尺模型进行冲击试验,得到了相应的应变和挠度时程曲线.用大型通用有限元计算软件ANSYS/LS-DYNA进行参数比较分析,得出了钢-混凝土组合梁在冲击荷载作用下的更多的力学行为,如变形曲线、位移曲线、应变、速度、加速度时程曲线.分析表明,组合梁跨中附近钢筋混凝土上面层的横向变形最明显;加速度值从钢筋混凝土上面层到下面层逐渐减小.
Impact experiment of 6 steel - concrete composite beams was conducted. The time - history curves of some key nodes were gotten. Parametric analysis using ANSYS/LS - DYNA gives much more details on the behaviors of composite beam under impact load, such as deflection curves, stress curves, velocity curves, and acceleration curves. Analysis shows that the transverse deflections of the upper face of concrete nearby the middle of the span are significant. Accelerate decreases from the upper face of concrete to the lower face.
出处
《贵州科学》
2007年第B05期209-213,共5页
Guizhou Science
