摘要
根据施工过程中的围岩稳定情况确定出合理的施工进尺并实时可视化评价结构安全状况具有重要的工程意义。首先利用BIM建模软件建立三维基础模型,通过对建模软件进行二次开发并结合系统仿真原理得到引水隧洞施工进度;其次将几何模型转换为数值计算模型并建立进度数据库与引水隧洞数值模型之间的映射关系,通过有限元分析围压系统的安全状况,根据不同进尺下的进度计算及围岩稳定分析结果,合理选择施工进尺;最后基于Python+VB.net混合编程技术编制了引水隧洞施工进度与围岩稳定安全仿真系统。工程应用表明,该系统将隧洞施工进度、支护体系与围岩稳定性进行结合,可为合理制定施工计划及施工现场控制提供可视化技术及数据支持。
According to the stability of surrounding rock during construction,a reasonable construction schedule and real-time visual evaluation of structural safety status are determined.It has important engineering significance.The BIM modeling software is used to establish the 3D basic model.The construction schedule of diversion tunnel is obtained by the secondary development of the modeling software and the system simulation principle.Secondly,the geometric model is converted into a numerical calculation model,and the mapping relationship between progress database and the numerical model of the diversion tunnel is established.The finite element is used to analyze the safety status of confining system.According to the progress calculation under different footages and the stability analysis results of surrounding rock,the construction footage is selected reasonably.Finally,based on a mixed progamming technology with Python and VB.net,the construction progress of the diversion tunnel and the surrounding rock stability safety simulation system are compiled.The system can combine the tunnel construction schedule,support system and surrounding rock stability,which provides visualization technology and data support for formulating a reasonable construction plan and construction site control.
作者
张玉贤
张继勋
任旭华
王天兴
ZHANG Yu-xian;ZHANG Ji-xun;REN Xu-hua;WANG Tian-xing(College of Water Conservancy and Hydro power Engineering,Hohai University,Nanjing 210098,China;The Experimental Teaching Center of Water Resources,Hohai University,Nanjing 210098,China;Collaborative Innovation Center on Water Safety and Water Science,Hohai University,Nanjing 210098,China;PowerChina Zhongnan Engineering Corporation Limited,Changsha 410014,China)
出处
《水电能源科学》
北大核心
2020年第9期109-113,共5页
Water Resources and Power
基金
国家自然科学基金项目(U1765204)。
关键词
引水隧洞
施工进度
结构安全
实时仿真
可视化
diversion tunnel
construction schedule
structural safety
real-time simulation
visualization
