中文摘要：

为解决泥石流拦挡坝在大块石冲击作用下容易破坏的问题,提出一种由前部钢架、中间弹簧、后部混凝土坝体组成的弹簧格构泥石流拦挡坝.应用有限元分析软件LS-DYNA对新型坝和普通重力式拦挡坝进行对比分析,得到坝体的应力分布情况及冲击力、位移的时程曲线.结果表明,新型坝较普通坝有优越的抗冲击性能,新型坝后坝的应力分布比普通坝更均匀且应力水平明显降低,弹簧格构坝的冲击力、位移较普通坝有显著降低.

英文摘要：

In order to solve the problem that the blocking dam of debris flow is easy to be destroyed by the impact of massive rocks, a novel spring lattice blocking dam of debris flow is proposed, which is consists of front steel frame, middle spring, and rear concrete dam. This novel blocking dam is compared and analyzed with ordinary gravity blocking dam by using finite element analysis software LS-DYNA. The stress distribution and time history curve of impact and displacement of the dams are obtained. The results show that the new dam has superior impact resistance and its stress distribution is more homogeneous than ordi- nary gravity dam. The impact force and displacement of the spring lattice dam is much smaller than the ordinary dam.