带摩擦阻尼器的新型泥石流拦挡坝的动力响应  

Dynamic Responses of A Novel Debris Flow Blocking Dam with Friction Damper

作　　者：王秀丽[1,2] 张秦琦 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050 [2]西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050

出　　处：《水土保持通报》2016年第4期32-35,共4页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目"泥石流冲击下新型空间网格防护结构理论及试验研究"(51278236);国家科技支撑计划项目"白龙江流域滑坡泥石流工程防治技术研究与示范"(2011BAK12B07)

摘　　要：[目的]为解决普通格栅泥石流拦挡坝容易被损毁的问题,提出带摩擦阻尼器的新型泥石流格栅拦挡坝,为摩擦阻尼器在新型泥石流格栅坝中的应用提供依据。[方法]采用钢球模拟泥石流中的大块石,运用有限元软件ABAQUS对这种新型坝体进行泥石流大块石的冲击模拟。[结果]与普通泥石流拦挡坝相比,带摩擦阻尼器的新型泥石流拦挡坝在巨石冲击坝体时梁柱节点处的应力响应明显减小。[结论]新型泥石流格栅坝在位移、能量等方面具有良好的抗冲击性能。[Objective] In order to reduce the damages of conventional grilled dam caused by debris flow, a novel debris dam with friction damper is proposed. [Methods] Simulating of massive stone in debris flow by steel ball, the finite element software ABAQUS was used to simulate the dynamic responses of the impact of large stones. [Results] As compared with the ordinary grilled dam, the stress response of beam-column joints was obviously reduced when an impacting force was applied against the dam. [Conclusion] The damped dam had well impact-resistance performance either in displacement withstanding or in energy reduction.

关 键 词：摩擦阻尼器 新型泥石流拦挡坝 动力响应分析 数值模拟 

分 类 号：P642.23[天文地球—工程地质学]