A solution scheme is proposed in this paper for an existing RTDHT system to simulate large-scale finite element （FE） numerical substructures. The analysis of the FE numerical substructure is split into response anal...A solution scheme is proposed in this paper for an existing RTDHT system to simulate large-scale finite element （FE） numerical substructures. The analysis of the FE numerical substructure is split into response analysis and signal generation tasks, and executed in two different target computers in real-time. One target computer implements the response analysis task, wherein a large time-step is used to solve the FE substructure, and another target computer implements the signal generation task, wherein an interpolation program is used to generate control signals in a small time-step to meet the input demand of the controller. By using this strategy, the scale of the FE numerical substructure simulation may be increased significantly. The proposed scheme is initially verified by two FE numerical substructure models with 98 and 1240 degrees of freedom （DOFs）. Thereafter, RTDHTs of a single frame-foundation structure are implemented where the foundation, considered as the numerical substructure, is simulated by the FE model with 1240 DOFs. Good agreements between the results of the RTDHT and those from the FE analysis in ABAQUS are obtained.展开更多
针对水电工程边坡施工期信息管理及可视化分析存在工程模型及信息动态属性描述片面、信息表达不全面等问题,该文将现代信息技术与工程建设深度融合,以感知、分析、控制的智能建造理论为基础,借鉴建筑信息模型(building information mode...针对水电工程边坡施工期信息管理及可视化分析存在工程模型及信息动态属性描述片面、信息表达不全面等问题,该文将现代信息技术与工程建设深度融合,以感知、分析、控制的智能建造理论为基础,借鉴建筑信息模型(building information modeling,BIM),提出水电工程边坡施工全过程信息模型的建立方法和实现过程,构建了在线分析、动态跟踪、反馈预警的施工综合管控体系。采用Visual C#网络编程技术,构建了集进度、质量、安全于一体的水电工程高边坡施工全过程的现代化信息模型管理平台。以白鹤滩水电站坝肩边坡为实例应用,实现该边坡设计、施工过程与成果的全面数字化管理,有效改善了传统的水电工程施工信息散乱、效率低、难流动的工作模式,有利于控制施工进度、降低施工过程的安全风险,直接指导现场施工生产,具有较大的工程应用价值。展开更多
基金National Natural Science Foundation under Grant Nos.51179093,91215301 and 41274106the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No.20130002110032Tsinghua University Initiative Scientific Research Program under Grant No.20131089285
文摘A solution scheme is proposed in this paper for an existing RTDHT system to simulate large-scale finite element （FE） numerical substructures. The analysis of the FE numerical substructure is split into response analysis and signal generation tasks, and executed in two different target computers in real-time. One target computer implements the response analysis task, wherein a large time-step is used to solve the FE substructure, and another target computer implements the signal generation task, wherein an interpolation program is used to generate control signals in a small time-step to meet the input demand of the controller. By using this strategy, the scale of the FE numerical substructure simulation may be increased significantly. The proposed scheme is initially verified by two FE numerical substructure models with 98 and 1240 degrees of freedom （DOFs）. Thereafter, RTDHTs of a single frame-foundation structure are implemented where the foundation, considered as the numerical substructure, is simulated by the FE model with 1240 DOFs. Good agreements between the results of the RTDHT and those from the FE analysis in ABAQUS are obtained.
文摘针对水电工程边坡施工期信息管理及可视化分析存在工程模型及信息动态属性描述片面、信息表达不全面等问题,该文将现代信息技术与工程建设深度融合,以感知、分析、控制的智能建造理论为基础,借鉴建筑信息模型(building information modeling,BIM),提出水电工程边坡施工全过程信息模型的建立方法和实现过程,构建了在线分析、动态跟踪、反馈预警的施工综合管控体系。采用Visual C#网络编程技术,构建了集进度、质量、安全于一体的水电工程高边坡施工全过程的现代化信息模型管理平台。以白鹤滩水电站坝肩边坡为实例应用,实现该边坡设计、施工过程与成果的全面数字化管理,有效改善了传统的水电工程施工信息散乱、效率低、难流动的工作模式,有利于控制施工进度、降低施工过程的安全风险,直接指导现场施工生产,具有较大的工程应用价值。
