建筑爆破拆除动力方程近似解研究(1)

研究了框架的单跨及逐跨倾旋的端塑性铰悬臂有根体、剪力墙和烟囱的底端塑性铰有根竖直体单向倾倒等动力方程的数值解、速度解析解和广义位移近似解,比较近似解组与数值解,两者误差在5%以内,近似解组可在不同的初始条件下方便应用,由此解决了框架单跨倾旋、逐跨倾旋断裂、剪力墙及烟囱单向倾倒的运动姿态及相关问题,以公式直接显示出建筑机构运动姿态与各参量的关系,便于探索运动姿态的规律和拆除方案的手算优选.

Study on Dynamics Equation Approximation of Blasting Demolition of Structures (1)

The numerical solution,velocity analytical solution and approximative solution of dynamics equation, which describe that overhanging rooted body with plastic joint end is whirled and vertical rooted body with basis plas- tic joint is sloped down, are studied in this paper. The different between numerical and approximative solution is about 5%. Analytical and approximative solution formulas can be applied in different initial condition. It is solved in moving above and on ground that the beam is whirled in single span,the beams are sloped down and disintegrated by gradual span, the shear wall and chimney are topped by blasting demolition. The relationship among moving posture of building and its coefficients is presented. Consequently, the principle of moving posture of building is easy to he explored and demolishing scheme can be optimized and calculated conveniently.