建筑信息模型(Building Information Modeling,BIM)在土木工程领域不断深化应用。根据我国铁路建设发展特点和设计、施工、管理的实际需求,提出了基于Bentley平台铁路普通桥梁BIM正向设计的思路方法、技术框架和系统流程,并采用参数化...建筑信息模型(Building Information Modeling,BIM)在土木工程领域不断深化应用。根据我国铁路建设发展特点和设计、施工、管理的实际需求,提出了基于Bentley平台铁路普通桥梁BIM正向设计的思路方法、技术框架和系统流程,并采用参数化建模方式建立普通桥梁构件库,自主研发基于Bentley Open Rail Designer平台的铁路普通桥梁BIM设计系列软件,形成了桥位初始化、全桥BIM模型生成、碰撞检查、地质三维化等一套整体方案。该方案成功应用于宁淮铁路桥梁工程设计中,BIM模型生成精度高、速度快,从而验证了整套方案的有效性和可行性。展开更多
Based on the physical meaning of sensitivity,a new finite element(FE) model updating method was proposed. In this method,a three-dimensional FE model of the Nanjing Yangtze River Bridge(NYRB) with ANSYS program was es...Based on the physical meaning of sensitivity,a new finite element(FE) model updating method was proposed. In this method,a three-dimensional FE model of the Nanjing Yangtze River Bridge(NYRB) with ANSYS program was established and updated by modifying some design parameters. To further validate the updated FE model,the analytical stress-time histories responses of main members induced by a moving train were compared with the measured ones. The results show that the relative error of maximum stress is 2.49% and the minimum relative coefficient of analytical stress-time histories responses is 0.793. The updated model has a good agreement between the calculated data and the tested data,and provides a current baseline FE model for long-term health monitoring and condition assessment of the NYRB. At the same time,the model is validated by stress-time histories responses to be feasible and practical for railway steel bridge model updating.展开更多
文摘建筑信息模型(Building Information Modeling,BIM)在土木工程领域不断深化应用。根据我国铁路建设发展特点和设计、施工、管理的实际需求,提出了基于Bentley平台铁路普通桥梁BIM正向设计的思路方法、技术框架和系统流程,并采用参数化建模方式建立普通桥梁构件库,自主研发基于Bentley Open Rail Designer平台的铁路普通桥梁BIM设计系列软件,形成了桥位初始化、全桥BIM模型生成、碰撞检查、地质三维化等一套整体方案。该方案成功应用于宁淮铁路桥梁工程设计中,BIM模型生成精度高、速度快,从而验证了整套方案的有效性和可行性。
基金Project(2001G025) supported by the Foundation of the Science and Technology Section of Ministry of Railway of ChinaProject(2006FJ4233) supported by Hunan Postdoctoral Scientific Program of ChinaProject(2006) supported by the Postdoctoral Foundation of Central South University,China
文摘Based on the physical meaning of sensitivity,a new finite element(FE) model updating method was proposed. In this method,a three-dimensional FE model of the Nanjing Yangtze River Bridge(NYRB) with ANSYS program was established and updated by modifying some design parameters. To further validate the updated FE model,the analytical stress-time histories responses of main members induced by a moving train were compared with the measured ones. The results show that the relative error of maximum stress is 2.49% and the minimum relative coefficient of analytical stress-time histories responses is 0.793. The updated model has a good agreement between the calculated data and the tested data,and provides a current baseline FE model for long-term health monitoring and condition assessment of the NYRB. At the same time,the model is validated by stress-time histories responses to be feasible and practical for railway steel bridge model updating.
