fresh concrete

The dynamic response of fresh concrete filling pile under blasting load is studied by numerical sim- ulation in this paper.

采用数值模拟方法，对新浇混凝土灌注桩在爆破振动作用下的动态响应进行了分析。

Through calculation of the distribution of vibration velocity and dynamic strain in the fresh placing concrete of foundation with theory of Rayleigh Wave and the dynamic FEM, and combined with the analysis of the strength development of young concrete, the safe velocity and its influencing factors of young concrete under loading of blasting vibration could be decided.

针对新浇筑混凝土的爆破震动控制,设法利用爆破地震波(Rayleigh波)作用下的新浇筑基础混凝土受力状态的理论分析和动力有限元计算,确定的新浇筑混凝土中的震动速度及动拉应变分布,并结合不同龄期下新浇筑混凝土的允许极限拉应变,从理论上确定新浇筑基础混凝土的安全震动速度及主要影响因素。