基于状态空间理论的砼重力坝振动响应分析  

An Analysis of the Vibration Response of Concrete Gravity Dams Based on the State Space Theory

作　　者：谢荣晖[1,2] 吴学平[3] 胡德华[1,2] 罗德河 XIE Rong-hui WU Xue-ping HU De-hua LUO De-he(College of Water Conservancy and Hydropower Engineering, Hohai University,Nanjing 210098, China National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, Nanjing 210098, China Sinohydro Bureau Co Ltd. 8, Changsha 410004, China)

机构地区：[1]河海大学水利水电学院,南京210098 [2]河海大学水资源高效利用与工程安全国家工程研究中心,南京210098 [3]中国水利水电第八工程局有限公司,长沙410004

出　　处：《中国农村水利水电》2016年第11期156-159,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51279052);国家自然科学基金项目(51579085);水文水资源与水利工程科学国家重点实验室研究项目(20145028312);江苏省"333高层次人才培养工程"科研项目(2016-B1307101)

摘　　要：介绍了一种基于状态空间理论的多自由度结构系统动力响应分析算法,将结构动力学的平衡方程经过一定的变换得到状态空间方程,再将该方程嵌入卡尔曼滤波算法,最终得到多自由度系统的状态随着系统输入的实时更新。将该算法运用于混凝土重力坝算例,分别进行不同观测噪声水平的动力响应计算,并且将得到的动力响应信息与ABAQUS有限元软件数值模拟的结果进行比较,均具有较高的相似度,说明该算法的有效性,并且抗噪能力强,具有一定的工程应用价值。An algorithm of dynamic response analysis of multi-degrees of freedom structural system based on the state space theory is introduced, the equilibrium equations of dynamics structure are transformed into the state space equation, which is embedded to Kalman filter lat- er. Finally the real-time updates of the status of multiple degrees of freedom systems are obtained with the system input. The algorithm is applied to examples of concrete gravity dams, where the dynamic response is calculated at different observation noise levels, and the response information is compared with the result of ABAQUS finite element software simulation, which has a high degree of similarity, which indicates that the algorithm has a certain value in engineering due to its higher efficiencv and the stronger noise immunity.

关 键 词：状态空间理论 重力坝 动力响应 振动 

分 类 号：TV312[水利工程—水工结构工程]