铁路工程装配式三维数字化设计方法研究

Assembled 3D digital design method for railway engineering

为解决铁路工程复杂结构形式下设计建模工作量大、建模精度不高、现有三维设计软件适用性弱等问题,建立构件数据存储标准,基于工程装配式思路,将单个构件作为设计单元进行参数化预设计,实现参数与模型的实时交互;将空间几何线抽象为设计参数并定义为线状约束,约束构件位置和形态,实现构件的精细化设计和组装;建立构件属性与工程量计算模板的映射关系,将构件参数导入模板,快速计算工程量;采用剖切构件几何轮廓线的方式生成二维图。该研究降低了铁路工程复杂单体构件精细化设计的难度,有效提升了复杂结构物建模和修改的效率。

To solve the problems of large workload,low modeling accuracy,and weak applicability of existing 3D design software in complex structural forms of railway engineering,this paper established a component data storage standard.Based on the engineering assembly approach,the paper used a single component as a design unit for parameterized pre-design,implemented real-time interaction between parameters and models,abstracted spatial geometric lines as design parameters and defined them as linear constraints to constrain the position and shape of components,implemented refined design and assembly of components,stablished a mapping relationship between component attributes and the engineering quantity calculation template,imported component parameters into the template,and quickly calculated the engineering quantity,generated a 2D image by cutting the geometric contour lines of the components.This study reduces the difficulty of fine-grained design of complex individual components in railway engineering,and effectively improves the efficiency of modeling and modifying complex structures.