摘要
研究目的:为提高铁路隧道BIM建模效率及铁路隧道参数模型的通用性,解决商业BIM软件内置几何约束表征对二次开发参数化隧道建模的限制问题,本文基于独立几何语义对铁路隧道参数化建模进行研究,构建铁路隧道优化参数建模流程,发展相应的参数化算法,并采用开源几何造型库进行实现。研究结论:(1)提出了一种铁路隧道参数化建模流程与铁路隧道实体模型生成方法;(2)基于几何语义对铁路隧道横断面进行分解,确定了描述横断面所需参数;(3)确定了三种横断面轮廓分段形式下的参数关系,提出了一种优化铁路隧道参数化算法;(4)基于Open Cascade开源几何造型库,实现并验证了该铁路隧道参数化算法的优越性;(5)本文提出的铁路隧道参数化算法不受常用建模软件内置几何约束表征方式的限制,可直接绘制隧道断面轮廓并生成三维实体模型,能满足铁路隧道实体建模需求,提高铁路隧道实体建模效率与铁路隧道参数化建模的通用性。
Research purposes:To improve the efficiency of railway tunnel modeling and the universality of railway tunnel parametric model,and to address the limitations of geometric constraint representations built into commercial BIM software on secondary development of tunnel parametric modeling,this paper studies the parametric modeling of railway tunnels based on independent geometric semantics,constructs a process for optimized parameter modeling of railway tunnels,develops corresponding parameterization algorithms,and implements them using an open-source geometric modeling library.Research conclusions:(1)A parametric modeling process for railway tunnels and a method for generating railway tunnel solid models were proposed.(2)Based on geometric semantics,the cross-section of railway tunnels was decomposed and the parameters required to describe the cross-section were determined.(3)The parameter relations of three contour segments of cross section were determined,and a parameterization algorithm of railway tunnel was developed.(4)Based on the Open Cascade open-source geometric modeling library,the advantages of the proposed railway tunnel parameterization algorithm were verified.(5)The railway tunnel parameterization algorithm is not limited by the built-in geometric constraint representation of modeling software,and can directly draw tunnel cross-section profile and generate a three-dimensional solid model,which can meet the needs of railway tunnel solid modeling,and improve the efficiency and universality of railway tunnel parametric modeling.
作者
谭衢霖
郭泽
卢文龙
解亚龙
史瑞昌
秦琳
鲍榴
TAN Qulin;GUO Ze;LU Wenlong;XIE Yalong;SHI Ruichang;QIN Lin;BAO Liu(Beijing Jiaotong University,Beijing 100044,China;China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)
出处
《铁道工程学报》
EI
CSCD
北大核心
2024年第5期87-93,共7页
Journal of Railway Engineering Society
基金
中国铁道科学研究院集团有限公司科研项目(2023YJ154)。
关键词
几何语义
BIM技术
铁路隧道
参数化建模
信息模型
geometric semantics
BIM technology
railway tunnel
parametric modeling
information model
