爆炸荷载作用下中隔墩应力场的影响因素分析

针对影响中隔墩动应力分布的各种因素，包括中隔墩的宽度，力学参数，两侧岩体的爆破开挖顺序等，分别建立不同的有限元计算模型，利用ANSYS5．5．2有限元分析软件对中隔墩在爆炸荷载作用下的应力分布情况进行了计算,分析，还对沿中隔墩高程分布质点振速的放大效应进行了讨论，结果表明中隔墩的宽度，力学参数，两侧岩体的爆破开挖顺序对中隔墩的应力分布均有很大的影响，实际施工中应对这些因素进行严格控制，以确保中隔的安全与稳定。

Analysis on factors affecting stress distribution in rock wall under blasting loads

 FEM analyzing models are established for various factors affecting the dynamic stress distribution in rock wall. These factors include widths of rock wall,mechanical parameters,and the excavating order of rock wall. The stress distribution in the rock wall is calculated and analyzed under the blasting loads with FEM software ANSYS5.5.2. The magnifying effect of velocity along the height of rock wall are also discussed. The results show that widths of rock wall,mechanical parameters,and the excavating order of rock wall all have great effects on the dynamic stress distribution in rock wall. These factors must be strictly controlled for the safety and stability of rock wall in the construction.