摘要
将加肋地基板作为板-梁耦合系统,考虑弹性地基模型,建立土—基础耦合系统的运动微分方程,通过富氏积分变换及其逆变换,演绎出双向正交加肋钢筋混凝土地基板在设备谐激力作用下的振动响应的半解析解法。结果说明,在土建设计中,为了减少振动对环境的有害影响,应考虑动力设备基础的隔振和减振问题。数值算例也表明,本方法有较好的计算精度。
Based on the plate-beam coupling system and the elastic soil model, the differential equations of motion of soil and foundation coupling system for orthogonally stiffened foundation plate is established in the paper, by means of Fourier integral transformation and Fourier inverse transformation, a semi-analytical solution is derived for the vibration problem of a infinite orthogonally stiffened foundation plate subjected to harmonic force from the dynamic equipments, which has a satisfying computational effectiveness and precision. It is drawn that, the dynamic equipments laid on the beam-plate foundation system have to hold additional reinforced foundations, and it is necessary to design the isolation foundation for the dynamic equipments.
出处
《世界地震工程》
CSCD
2004年第3期62-65,共4页
World Earthquake Engineering
基金
国家自然科学基金资助项目(50208016)
